From 6f558132a1ed376af73782298e7783ef751b2f01 Mon Sep 17 00:00:00 2001
From: yangwei <yangwei@iie.ac.cn>
Date: Wed, 20 Jul 2022 20:20:31 +0800
Subject: [PATCH 01/17] rename packet_io_loop to stellar_event_base_loop

---
 sdk/example/custom_event_plugin.cpp           | 19 ++++---
 sdk/example/http_event_plugin.cpp             |  9 +++-
 sdk/example/plugin.inf                        |  0
 .../custom_event_plugin.inf                   | 13 +++++
 .../http_event_plugin/http_event_plugin.inf   |  9 ++++
 sdk/example/plugins/plugins.inf               |  2 +
 sdk/include/event.h                           | 18 +++++++
 sdk/include/http.h                            |  2 +-
 sdk/include/packet.h                          |  2 +-
 sdk/include/plugin.h                          |  8 +--
 sdk/include/session.h                         | 28 ++++------
 src/main.cpp                                  | 10 ++--
 src/packet_io/packet_io.cpp                   |  4 +-
 src/packet_io/packet_io.h                     |  4 +-
 src/packet_io/test/gtest_packet_io.cpp        |  2 +-
 src/plugin_manager/CMakeLists.txt             |  4 +-
 src/plugin_manager/plugin_manager.cpp         | 24 ++++++---
 src/plugin_manager/plugin_manager.h           | 23 +++++++-
 src/protocol_decoder/http/CMakeLists.txt      |  3 +-
 src/protocol_decoder/http/http.cpp            |  8 +--
 src/session_manager/CMakeLists.txt            |  4 +-
 src/session_manager/session_manager.cpp       | 29 +++-------
 src/session_manager/session_manager.h         | 53 ++++++-------------
 23 files changed, 160 insertions(+), 118 deletions(-)
 delete mode 100644 sdk/example/plugin.inf
 create mode 100644 sdk/example/plugins/custom_event_plugin/custom_event_plugin.inf
 create mode 100644 sdk/example/plugins/http_event_plugin/http_event_plugin.inf
 create mode 100644 sdk/example/plugins/plugins.inf
 create mode 100644 sdk/include/event.h

diff --git a/sdk/example/custom_event_plugin.cpp b/sdk/example/custom_event_plugin.cpp
index 7decbc4..7bf014e 100644
--- a/sdk/example/custom_event_plugin.cpp
+++ b/sdk/example/custom_event_plugin.cpp
@@ -9,17 +9,17 @@ void *custom_decode(const char *payload, uint32_t len, void **pme)
 	return nullptr;
 }
 
-int custom_plugin_entry(const struct session *s, int what, struct packet *p, const char *payload, uint32_t len, void **pme)
+int custom_plugin_entry(const struct stellar_session *s, int what, struct stellar_packet *p, const char *payload, uint32_t len, void **pme)
 {
-	void *info= custom_decode(payload, len, pme);
-	struct session *new_session=session_manager_custom_session_derive(s, _event);
+	struct stellar_session_event_extras *info= (struct stellar_session_event_extras *)custom_decode(payload, len, pme);
+	struct stellar_session *new_session=session_manager_session_derive(s, "CUSTOM_A");
 	session_manager_trigger_event(new_session, SESSION_EVENT_OPENING, info);
 	session_manager_trigger_event(new_session, SESSION_EVENT_META, info);
 	return 0;
 
 }
 
-int custom_event_plugin_entry(const struct session *s, int what, struct packet *p, const char *payload, uint32_t len, void **pme)
+int custom_event_plugin_entry(const struct stellar_session *s, int what, struct stellar_packet *p, const char *payload, uint32_t len, void **pme)
 {
 	return 0;
 
@@ -27,9 +27,12 @@ int custom_event_plugin_entry(const struct session *s, int what, struct packet *
 
 int custom_plugin_init()
 {
-	_event = session_manager_custom_session_event_register("SESSION_TYPE_CUSTOM", (int)(SESSION_EVENT_OPENING|SESSION_EVENT_RAW_PKT|SESSION_EVENT_META|SESSION_EVENT_CLOSING));
-	plugin_session_event_register(SESSION_TYPE_TCP, custom_plugin_entry, nullptr);
-
-	plugin_custom_session_event_register("SESSION_TYPE_CUSTOM", custom_event_plugin_entry, nullptr);
+	plugin_session_event_register("TCP", custom_plugin_entry, nullptr);
+	plugin_session_event_register("CUSTOM_A", custom_event_plugin_entry, nullptr);
 	return 0;
+}
+
+void custom_plugin_destroy()
+{
+	return ;
 }
\ No newline at end of file
diff --git a/sdk/example/http_event_plugin.cpp b/sdk/example/http_event_plugin.cpp
index 98fffd9..e8ac0bb 100644
--- a/sdk/example/http_event_plugin.cpp
+++ b/sdk/example/http_event_plugin.cpp
@@ -5,13 +5,18 @@
 
 
 
-int http_event_plugin_entry(const struct session *s, int what, struct packet *p, const char *payload, uint32_t len, void **pme)
+int http_event_plugin_entry(const struct stellar_session *s, int what, struct stellar_packet *p, const char *payload, uint32_t len, void **pme)
 {
 	return 0;
 }
 
 int http_event_plugin_init()
 {
-	plugin_session_event_register(SESSION_TYPE_HTTP, http_event_plugin_entry, nullptr);
+	plugin_session_event_register("HTTP", http_event_plugin_entry, nullptr);
 	return 0;
+}
+
+void http_event_plugin_destroy()
+{
+	return ;
 }
\ No newline at end of file
diff --git a/sdk/example/plugin.inf b/sdk/example/plugin.inf
deleted file mode 100644
index e69de29..0000000
diff --git a/sdk/example/plugins/custom_event_plugin/custom_event_plugin.inf b/sdk/example/plugins/custom_event_plugin/custom_event_plugin.inf
new file mode 100644
index 0000000..78107e1
--- /dev/null
+++ b/sdk/example/plugins/custom_event_plugin/custom_event_plugin.inf
@@ -0,0 +1,13 @@
+[PLUGINFO]
+INIT_FUNC=custom_plugin_init
+DESTROY_FUNC=custom_plugin_destroy
+LIBARY_PATH=./plugins/custom_event_plugin/custom_event_plugin.so
+
+
+[SESSION_TYPE.TCP]
+SESSION_EVENT_TYPE=ALL
+SESSION_EVENT_CALLBACK=custom_plugin_entry
+
+[SESSION_TYPE.CUSTOM_A]
+SESSION_EVENT_TYPE=ALL
+SESSION_EVENT_CALLBACK=custom_event_plugin_entry
\ No newline at end of file
diff --git a/sdk/example/plugins/http_event_plugin/http_event_plugin.inf b/sdk/example/plugins/http_event_plugin/http_event_plugin.inf
new file mode 100644
index 0000000..62b7a4a
--- /dev/null
+++ b/sdk/example/plugins/http_event_plugin/http_event_plugin.inf
@@ -0,0 +1,9 @@
+[PLUGINFO]
+INIT_FUNC=http_event_plugin_init
+DESTROY_FUNC=http_event_plugin_destroy
+LIBARY_PATH=./plugins/http_event_plugin/http_event_plugin.so
+
+
+[SESSION_TYPE_HTTP]
+SESSION_EVENT_TYPE=ALL
+SESSION_EVENT_CALLBACK=http_event_plugin_entry
\ No newline at end of file
diff --git a/sdk/example/plugins/plugins.inf b/sdk/example/plugins/plugins.inf
new file mode 100644
index 0000000..50e40af
--- /dev/null
+++ b/sdk/example/plugins/plugins.inf
@@ -0,0 +1,2 @@
+./http_event_plugin/http_event_plugin.inf
+./custom_event_plugin/custom_event_plugin.inf
\ No newline at end of file
diff --git a/sdk/include/event.h b/sdk/include/event.h
new file mode 100644
index 0000000..9f374db
--- /dev/null
+++ b/sdk/include/event.h
@@ -0,0 +1,18 @@
+
+enum stellar_event_type
+{
+    STELLAR_SESSION_EVENT,
+};
+
+struct stellar_session_event_data;
+
+struct stellar_event
+{
+    stellar_event_type type;
+    union
+    {
+        struct stellar_session_event_data *session_event_data;
+        void *event_data;
+    };
+};
+
diff --git a/sdk/include/http.h b/sdk/include/http.h
index abef6c7..62b1fbd 100644
--- a/sdk/include/http.h
+++ b/sdk/include/http.h
@@ -3,4 +3,4 @@
 #include "packet.h"
 #include "session.h"
 
-int http_decoder(const struct session *s, int what, struct packet *p, const char *payload, uint32_t len, void **pme);
+int http_decoder(const struct stellar_session *s, int what, struct stellar_packet *p, const char *payload, uint32_t len, void **pme);
diff --git a/sdk/include/packet.h b/sdk/include/packet.h
index 5121457..5e4c102 100644
--- a/sdk/include/packet.h
+++ b/sdk/include/packet.h
@@ -1,4 +1,4 @@
 #pragma once
 
-struct packet;
+struct stellar_packet;
 
diff --git a/sdk/include/plugin.h b/sdk/include/plugin.h
index 10cacd1..e8d0f98 100644
--- a/sdk/include/plugin.h
+++ b/sdk/include/plugin.h
@@ -3,7 +3,9 @@
 #include "session.h"
 #include <time.h>
 
-int plugin_session_event_register(int session_type, fn_session_event_callback cb, void *entry_arg);
-int plugin_session_timer_register(struct session *s, fn_session_timer cb, void *timer_arg, const struct timeval *timeout);
+int plugin_session_event_register(const char *session_name, 
+                                  fn_session_event_callback call_back, 
+                                  const struct timeval *timeout);
 
-int plugin_custom_session_event_register(const char *event_name, fn_session_event_callback cb, void *entry_arg);
+void plugin_session_event_delete(struct stellar_event *ev,
+                                 struct stellar_session *s);
\ No newline at end of file
diff --git a/sdk/include/session.h b/sdk/include/session.h
index 2671589..17bea1d 100644
--- a/sdk/include/session.h
+++ b/sdk/include/session.h
@@ -1,12 +1,12 @@
 #pragma once
 
 #include "packet.h"
+#include "event.h"
 #include <stdint.h>
 
-struct session;
-struct session_event;
+struct stellar_session;
 
-enum session_type
+enum stellar_session_type
 {
 	SESSION_TYPE_CUSTOM,
 	SESSION_TYPE_IP,
@@ -23,7 +23,7 @@ enum session_type
 	SESSION_TYPE_MAX,
 };
 
-enum session_event_type
+enum stellar_session_event_type
 {
 	SESSION_EVENT_OPENING=0x01,
 	SESSION_EVENT_RAW_PKT=0x02,
@@ -32,19 +32,13 @@ enum session_event_type
 	SESSION_EVENT_CLOSING=0x10,
 };
 
+struct stellar_session_event_extras;
 
-typedef int (*fn_session_event_callback)(const struct session *s, int what, struct packet *p, const char *payload, uint32_t len, void **pme);
-typedef int (*fn_session_timer)(const struct session *s, void **pme);
+typedef int (*fn_session_event_callback)(const struct stellar_session *s, int what, struct stellar_packet *p, const char *payload, uint32_t len, void **pme);
 
-void session_manager_trigger_event(struct session *s, session_event_type event, void *event_info);
+void session_manager_trigger_event(struct stellar_session *s, 
+                                   stellar_session_event_type type,
+                                   struct stellar_session_event_extras *info);
 
-
-struct session_event *session_manager_commit(struct packet *p);
-
-struct custom_session_event;
-
-struct custom_session_event *session_manager_custom_session_event_register(const char *event_name, int available_event);
-struct session *session_manager_custom_session_derive(const struct session *cur_session, struct custom_session_event *event);
-
-
-struct session_event *session_manager_fetch_event();
+struct stellar_session *session_manager_session_derive(const struct stellar_session *this_session, 
+                                               const char *new_session_name);
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index b607270..3031933 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -3,16 +3,16 @@
 #include "plugin_manager.h"
 #include "http.h"
 
-struct packet_io_loop_arg
+struct stellar_event_base_loop_arg
 {
 	struct packet_io_device *dev;
 	int thread_id;
 };
 
-void packet_io_loop(struct packet_io_loop_arg *arg)
+void stellar_event_base_loop(struct stellar_event_base_loop_arg *arg)
 {
-	struct packet *rx_pkt;
-	struct session_event *event;
+	struct stellar_packet *rx_pkt;
+	struct stellar_event *event;
 	while(1)
 	{
 		int fetch_num = packet_io_rx(arg->dev, arg->thread_id, &rx_pkt, 1);
@@ -50,7 +50,7 @@ int main(int argc, char ** argv)
 {
 	//config_manager_init
 
-	session_manager_session_event_register(http_decoder, SESSION_TYPE_HTTP);
+	plugin_session_event_register("HTTP", http_decoder, nullptr);
 	//packet_io_init
 
 	//create_worker_thread
diff --git a/src/packet_io/packet_io.cpp b/src/packet_io/packet_io.cpp
index 43b9e7d..1b786c1 100644
--- a/src/packet_io/packet_io.cpp
+++ b/src/packet_io/packet_io.cpp
@@ -26,12 +26,12 @@ void packet_io_close_device(struct packet_io_device *dev)
 	return;
 }
 
-int packet_io_rx(struct packet_io_device *dev, uint32_t rx_queue_id, struct packet *p[], int nr_p)
+int packet_io_rx(struct packet_io_device *dev, uint32_t rx_queue_id, struct stellar_packet *p[], int nr_p)
 {
 	return 0;
 }
 
-int packet_io_tx(struct packet_io_device *dev, uint32_t rx_queue_id, struct packet *p[], int nr_p)
+int packet_io_tx(struct packet_io_device *dev, uint32_t rx_queue_id, struct stellar_packet *p[], int nr_p)
 {
 	return 0;
 }
\ No newline at end of file
diff --git a/src/packet_io/packet_io.h b/src/packet_io/packet_io.h
index 85cc16f..39414ca 100644
--- a/src/packet_io/packet_io.h
+++ b/src/packet_io/packet_io.h
@@ -19,5 +19,5 @@ void packet_io_destory(struct packet_io_instance *instance);
 struct packet_io_device *packet_io_open_device(struct packet_io_instance *instance, const char *dev_sym, uint32_t nr_rxqueue, uint32_t nr_txqueue);
 void packet_io_close_device(struct packet_io_device *dev);
 
-int packet_io_rx(struct packet_io_device *dev, uint32_t rx_queue_id, struct packet *p[], int nr_p);
-int packet_io_tx(struct packet_io_device *dev, uint32_t rx_queue_id, struct packet *p[], int nr_p);
\ No newline at end of file
+int packet_io_rx(struct packet_io_device *dev, uint32_t rx_queue_id, struct stellar_packet *p[], int nr_p);
+int packet_io_tx(struct packet_io_device *dev, uint32_t rx_queue_id, struct stellar_packet *p[], int nr_p);
\ No newline at end of file
diff --git a/src/packet_io/test/gtest_packet_io.cpp b/src/packet_io/test/gtest_packet_io.cpp
index ff0ea7f..8618e2e 100644
--- a/src/packet_io/test/gtest_packet_io.cpp
+++ b/src/packet_io/test/gtest_packet_io.cpp
@@ -1,6 +1,6 @@
 #include <gtest/gtest.h>
 
-#include "packet_io.h"
+#include "../packet_io.h"
 
 TEST(PACKET_IO_Test, packet_io_create) {
   EXPECT_EQ(packet_io_create(PACKET_IO_PCAP, "TEST"), nullptr);
diff --git a/src/plugin_manager/CMakeLists.txt b/src/plugin_manager/CMakeLists.txt
index 212664d..5850d1f 100644
--- a/src/plugin_manager/CMakeLists.txt
+++ b/src/plugin_manager/CMakeLists.txt
@@ -1,4 +1,4 @@
-include_directories(${CMAKE_SOURCE_DIR}/session_manager/)
 add_library(plugin_manager 
 	    plugin_manager.cpp
-)
\ No newline at end of file
+)
+target_include_directories(plugin_manager PUBLIC ${CMAKE_SOURCE_DIR})
\ No newline at end of file
diff --git a/src/plugin_manager/plugin_manager.cpp b/src/plugin_manager/plugin_manager.cpp
index c5b7fe1..4fe54ce 100644
--- a/src/plugin_manager/plugin_manager.cpp
+++ b/src/plugin_manager/plugin_manager.cpp
@@ -1,13 +1,16 @@
-#include "plugin.h"
+#include "deps/uthash/uthash.h"
+
+#include "sdk/include/session.h"
+
+
 #include "session_manager.h"
 
-#include "utils.h"
-
+#if 0
 struct session_event_callback
 {
 	const char *session_name;
 	fn_session_event_callback callback;
-	TAILQ_ENTRY(session_event_callback) session_event_cb_tq_entries;
+	TAILQ_ENTRY(session_event_callback) entries;
 	UT_hash_handle hh;	
 };
 
@@ -26,9 +29,18 @@ struct plugin_manager
 };
 
 struct plugin_manager g_plug_mgr;
+#endif
 
-void plugin_manager_dispatch(struct session_event *event)
+int plugin_session_event_register(const char *session_name, 
+                                  fn_session_event_callback call_back, 
+                                  const struct timeval *timeout)
 {
+	return 0;
+}
+
+void plugin_manager_dispatch(struct stellar_event *event)
+{
+#if 0
 	struct session *s = container_of(event, struct session, cur_ev);
 	struct session_event_callback_map *t_map;
 	struct session_event_callback *session_ev_cb;
@@ -55,6 +67,6 @@ void plugin_manager_dispatch(struct session_event *event)
 	default:
 		break;
 	}
-
+#endif
 	return;
 }
\ No newline at end of file
diff --git a/src/plugin_manager/plugin_manager.h b/src/plugin_manager/plugin_manager.h
index 6159957..d2b9672 100644
--- a/src/plugin_manager/plugin_manager.h
+++ b/src/plugin_manager/plugin_manager.h
@@ -1,6 +1,25 @@
 
 #pragma once
 
-#include "plugin.h"
+#include <sys/queue.h>
 
-void plugin_manager_dispatch(struct session_event *event);
\ No newline at end of file
+#include "sdk/include/session.h"
+#include "sdk/include/plugin.h"
+
+struct stellar_plugin_ctx
+{
+    void *call_back_arg;
+    const struct timeval timeout;
+    fn_session_event_callback call_back;
+    TAILQ_ENTRY(stellar_plugin_ctx) tqe;
+};
+
+TAILQ_HEAD(stellar_plugin_ctx_list, stellar_plugin_ctx);
+
+struct stellar_plugin_data
+{
+    stellar_plugin_ctx_list plugin_ctx_list;
+};
+
+
+void plugin_manager_dispatch(struct stellar_event *ev);
\ No newline at end of file
diff --git a/src/protocol_decoder/http/CMakeLists.txt b/src/protocol_decoder/http/CMakeLists.txt
index 50ed35d..dd8482f 100644
--- a/src/protocol_decoder/http/CMakeLists.txt
+++ b/src/protocol_decoder/http/CMakeLists.txt
@@ -2,4 +2,5 @@
 
 add_library(http
 	http.cpp
-)
\ No newline at end of file
+)
+target_include_directories(http PUBLIC ${CMAKE_SOURCE_DIR})
\ No newline at end of file
diff --git a/src/protocol_decoder/http/http.cpp b/src/protocol_decoder/http/http.cpp
index e8b19b5..13fd4d6 100644
--- a/src/protocol_decoder/http/http.cpp
+++ b/src/protocol_decoder/http/http.cpp
@@ -1,16 +1,16 @@
 #include "http.h"
 #include "session_manager.h"
 
-int http_decoder(const struct session *s, int what, struct packet *p, const char *payload, uint32_t len, void **pme)
+int http_decoder(const struct stellar_session *s, int what, struct stellar_packet *p, const char *payload, uint32_t len, void **pme)
 {
-	void *info;
-	struct session *new_session=session_manager_session_derive(s, SESSION_TYPE_HTTP);
+	struct stellar_session_event_extras *info;
+	struct stellar_session *new_session=session_manager_session_derive(s, "HTTP");
 	session_manager_trigger_event(new_session, SESSION_EVENT_OPENING, info);
 	session_manager_trigger_event(new_session, SESSION_EVENT_META, info);
 	return 0;
 }
 
-int http_peek(const struct session *s, const char *payload, uint32_t len)
+int http_peek(const struct stellar_session *s, const char *payload, uint32_t len)
 {
 	return 0;
 }
\ No newline at end of file
diff --git a/src/session_manager/CMakeLists.txt b/src/session_manager/CMakeLists.txt
index 23fe595..b78722f 100644
--- a/src/session_manager/CMakeLists.txt
+++ b/src/session_manager/CMakeLists.txt
@@ -1,4 +1,4 @@
-
 add_library(session_manager
 	session_manager.cpp
-)
\ No newline at end of file
+)
+target_include_directories(session_manager PUBLIC ${CMAKE_SOURCE_DIR})
\ No newline at end of file
diff --git a/src/session_manager/session_manager.cpp b/src/session_manager/session_manager.cpp
index a5592c8..10d41bd 100644
--- a/src/session_manager/session_manager.cpp
+++ b/src/session_manager/session_manager.cpp
@@ -2,42 +2,29 @@
 
 struct session_manager
 {
-	struct session **tcp_table, **udp_table;
+	struct stellar_session **tcp_table, **udp_table;
 };
 
-void session_manager_session_event_register(fn_session_event_callback decoder, session_type type)
+void session_manager_trigger_event(struct stellar_session *s, 
+                                   stellar_session_event_type type,
+                                   struct stellar_session_event_extras *info)
 {
 	return;
 }
 
-struct session *session_manager_custom_session_derive(const struct session *cur_session, struct custom_session_event *event)
+struct stellar_session *session_manager_session_derive(const struct stellar_session *this_session, 
+                                               const char *new_session_name)
 {
 	return nullptr;
 }
 
-void session_manager_trigger_event(struct session *s, session_event_type event, void *event_info)
-{
-	return;
-}
-
-
-struct session_event *session_manager_commit(struct packet *p)
+struct stellar_event *session_manager_commit(struct stellar_packet *p)
 {
 	return nullptr;
 };
 
 
-struct custom_session_event *session_manager_custom_session_event_register(const char *event_name, int available_event)
-{
-	return nullptr;
-}
-
-struct session *session_manager_session_derive(const struct session *cur_session, session_type type)
-{
-	return nullptr;
-}
-
-struct session_event *session_manager_fetch_event()
+struct stellar_event *session_manager_fetch_event()
 {
 	return nullptr;
 }
diff --git a/src/session_manager/session_manager.h b/src/session_manager/session_manager.h
index 17f2e0d..3bac9f0 100644
--- a/src/session_manager/session_manager.h
+++ b/src/session_manager/session_manager.h
@@ -1,47 +1,24 @@
 #pragma once
 
-#include "session.h"
-#include "uthash/uthash.h"
+#include "sdk/include/session.h"
 
-#include <sys/queue.h>  /* TAILQ(3) */
+struct stellar_plugin_data;
 
-struct session_data
+struct stellar_session_event_data
 {
-	/* data */
+    struct stellar_session *s;
+    stellar_session_event_type type;
+    long last_active;
+    struct stellar_plugin_data *plugin_data;
 };
 
-enum session_state
+struct stellar_event *session_manager_commit(struct stellar_packet *pkt);
+struct stellar_event *session_manager_fetch_event();
+
+struct stellar_session
 {
-	SESSION_STATE_OPENING,
-	SESSION_STATE_ACTIVE,
-	SESSION_STATE_CLOSING,
-	SESSION_STATE_CLOSED
+    stellar_session_type type;
+    const char *name;
+    void *addr;
+    void *data;
 };
-
-struct session_event
-{
-	enum session_state state;
-	void *cb_pme;
-	fn_session_event_callback callback;
-	TAILQ_ENTRY(session_event) session_event_tq_entries;
-};
-
-TAILQ_HEAD(session_event_list, session_event);
-
-struct session
-{
-	const char *name;
-	enum session_type type;
-	enum session_state state;
-	struct session_data data;
-	struct session_event cur_ev;
-	struct session_event_list ev_list;
-	TAILQ_ENTRY(session) session_tq_entries;
-	UT_hash_handle hh;
-};
-
-
-
-
-void session_manager_session_event_register(fn_session_event_callback session_ev_cb, session_type type);
-struct session *session_manager_session_derive(const struct session *cur_session, session_type type);

From ba866fef10cdbfd94618e4364756ac76f91fe43f Mon Sep 17 00:00:00 2001
From: yangwei <yangwei@iie.ac.cn>
Date: Sun, 24 Jul 2022 23:22:52 +0800
Subject: [PATCH 02/17] =?UTF-8?q?=E2=9C=A8=20feat(session=5Fmanager):=20in?=
 =?UTF-8?q?it=20return=20with=20handle?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 sdk/include/event.h                     |  6 ------
 src/main.cpp                            |  9 +++++----
 src/session_manager/session_manager.cpp | 10 ++++++++--
 src/session_manager/session_manager.h   |  7 +++++--
 4 files changed, 18 insertions(+), 14 deletions(-)

diff --git a/sdk/include/event.h b/sdk/include/event.h
index 9f374db..0653f69 100644
--- a/sdk/include/event.h
+++ b/sdk/include/event.h
@@ -1,14 +1,8 @@
 
-enum stellar_event_type
-{
-    STELLAR_SESSION_EVENT,
-};
-
 struct stellar_session_event_data;
 
 struct stellar_event
 {
-    stellar_event_type type;
     union
     {
         struct stellar_session_event_data *session_event_data;
diff --git a/src/main.cpp b/src/main.cpp
index 3031933..184abbe 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -6,6 +6,7 @@
 struct stellar_event_base_loop_arg
 {
 	struct packet_io_device *dev;
+	struct session_manager_handle *s_mgr;
 	int thread_id;
 };
 
@@ -18,11 +19,11 @@ void stellar_event_base_loop(struct stellar_event_base_loop_arg *arg)
 		int fetch_num = packet_io_rx(arg->dev, arg->thread_id, &rx_pkt, 1);
 		if(fetch_num > 0)
 		{
-			event = session_manager_commit(rx_pkt);
+			event = session_manager_commit(arg->s_mgr, rx_pkt);
 			while(event)
 			{
 				plugin_manager_dispatch(event);
-				event = session_manager_fetch_event();
+				event = session_manager_fetch_event(arg->s_mgr);
 			}
 
 			//clean session_manager event queue
@@ -48,8 +49,8 @@ struct packet_io_device *packet_io_init(int worker_thread_num, const char *insta
 
 int main(int argc, char ** argv)
 {
-	//config_manager_init
-
+	//config_init
+	struct session_manager_handle *h = session_manager_init();
 	plugin_session_event_register("HTTP", http_decoder, nullptr);
 	//packet_io_init
 
diff --git a/src/session_manager/session_manager.cpp b/src/session_manager/session_manager.cpp
index 10d41bd..b374920 100644
--- a/src/session_manager/session_manager.cpp
+++ b/src/session_manager/session_manager.cpp
@@ -5,6 +5,12 @@ struct session_manager
 	struct stellar_session **tcp_table, **udp_table;
 };
 
+struct session_manager_handle *session_manager_init()
+{
+	return nullptr;
+}
+
+
 void session_manager_trigger_event(struct stellar_session *s, 
                                    stellar_session_event_type type,
                                    struct stellar_session_event_extras *info)
@@ -18,13 +24,13 @@ struct stellar_session *session_manager_session_derive(const struct stellar_sess
 	return nullptr;
 }
 
-struct stellar_event *session_manager_commit(struct stellar_packet *p)
+struct stellar_event *session_manager_commit(struct session_manager_handle *h, struct stellar_packet *p)
 {
 	return nullptr;
 };
 
 
-struct stellar_event *session_manager_fetch_event()
+struct stellar_event *session_manager_fetch_event(struct session_manager_handle *h)
 {
 	return nullptr;
 }
diff --git a/src/session_manager/session_manager.h b/src/session_manager/session_manager.h
index 3bac9f0..93c13da 100644
--- a/src/session_manager/session_manager.h
+++ b/src/session_manager/session_manager.h
@@ -12,8 +12,11 @@ struct stellar_session_event_data
     struct stellar_plugin_data *plugin_data;
 };
 
-struct stellar_event *session_manager_commit(struct stellar_packet *pkt);
-struct stellar_event *session_manager_fetch_event();
+struct session_manager_handle;
+struct session_manager_handle *session_manager_init();
+
+struct stellar_event *session_manager_commit(struct session_manager_handle *s_mgr, struct stellar_packet *pkt);
+struct stellar_event *session_manager_fetch_event(struct session_manager_handle *s_mgr);
 
 struct stellar_session
 {

From 7a3bc7a888d878c3fa06fc26460fced84d369e26 Mon Sep 17 00:00:00 2001
From: yangwei <yangwei@iie.ac.cn>
Date: Sun, 24 Jul 2022 23:59:00 +0800
Subject: [PATCH 03/17] =?UTF-8?q?=F0=9F=A6=84=20refactor(plugin=20manager)?=
 =?UTF-8?q?:=20update=20interface=20definition?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 sdk/example/custom_event_plugin.cpp     |  4 +--
 sdk/example/http_event_plugin.cpp       |  2 +-
 sdk/include/plugin.h                    |  7 +---
 sdk/include/session.h                   |  2 +-
 src/CMakeLists.txt                      |  2 +-
 src/main.cpp                            | 47 +++++++++++++++++--------
 src/plugin_manager/plugin_manager.cpp   | 16 +++++++--
 src/plugin_manager/plugin_manager.h     | 12 ++++++-
 src/session_manager/session_manager.cpp |  2 +-
 src/session_manager/session_manager.h   |  4 +--
 10 files changed, 66 insertions(+), 32 deletions(-)

diff --git a/sdk/example/custom_event_plugin.cpp b/sdk/example/custom_event_plugin.cpp
index 7bf014e..d5b95e9 100644
--- a/sdk/example/custom_event_plugin.cpp
+++ b/sdk/example/custom_event_plugin.cpp
@@ -27,8 +27,8 @@ int custom_event_plugin_entry(const struct stellar_session *s, int what, struct
 
 int custom_plugin_init()
 {
-	plugin_session_event_register("TCP", custom_plugin_entry, nullptr);
-	plugin_session_event_register("CUSTOM_A", custom_event_plugin_entry, nullptr);
+	//plugin_manager_event_register("TCP", custom_plugin_entry, nullptr);
+	//plugin_manager_event_register("CUSTOM_A", custom_event_plugin_entry, nullptr);
 	return 0;
 }
 
diff --git a/sdk/example/http_event_plugin.cpp b/sdk/example/http_event_plugin.cpp
index e8ac0bb..68dcf06 100644
--- a/sdk/example/http_event_plugin.cpp
+++ b/sdk/example/http_event_plugin.cpp
@@ -12,7 +12,7 @@ int http_event_plugin_entry(const struct stellar_session *s, int what, struct st
 
 int http_event_plugin_init()
 {
-	plugin_session_event_register("HTTP", http_event_plugin_entry, nullptr);
+	//plugin_manager_event_register("HTTP", http_event_plugin_entry, nullptr);
 	return 0;
 }
 
diff --git a/sdk/include/plugin.h b/sdk/include/plugin.h
index e8d0f98..11d55cc 100644
--- a/sdk/include/plugin.h
+++ b/sdk/include/plugin.h
@@ -1,11 +1,6 @@
 #pragma once
 
 #include "session.h"
-#include <time.h>
 
-int plugin_session_event_register(const char *session_name, 
-                                  fn_session_event_callback call_back, 
-                                  const struct timeval *timeout);
-
-void plugin_session_event_delete(struct stellar_event *ev,
+void plugin_remove_from_session_event(struct stellar_event *ev,
                                  struct stellar_session *s);
\ No newline at end of file
diff --git a/sdk/include/session.h b/sdk/include/session.h
index 17bea1d..ea3af84 100644
--- a/sdk/include/session.h
+++ b/sdk/include/session.h
@@ -41,4 +41,4 @@ void session_manager_trigger_event(struct stellar_session *s,
                                    struct stellar_session_event_extras *info);
 
 struct stellar_session *session_manager_session_derive(const struct stellar_session *this_session, 
-                                               const char *new_session_name);
\ No newline at end of file
+                                               const char *new_session_type_name);
\ No newline at end of file
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 2742da1..ede3dd3 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -16,4 +16,4 @@ add_executable(stellar
 	main.cpp
 )
 
-target_link_libraries(stellar packet_io plugin_manager session_manager http)
\ No newline at end of file
+target_link_libraries(stellar pthread packet_io plugin_manager session_manager http)
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index 184abbe..e09573f 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,3 +1,6 @@
+#include <pthread.h>
+#include <unistd.h>
+
 #include "packet_io.h"
 #include "session_manager.h"
 #include "plugin_manager.h"
@@ -6,28 +9,30 @@
 struct stellar_event_base_loop_arg
 {
 	struct packet_io_device *dev;
-	struct session_manager_handle *s_mgr;
-	int thread_id;
+	struct session_manager_handle *session_mgr;
+	struct plugin_manager_handle *plug_mgr;
+	int tid;
 };
 
-void stellar_event_base_loop(struct stellar_event_base_loop_arg *arg)
+void *stellar_event_base_loop(void *arg)
 {
 	struct stellar_packet *rx_pkt;
 	struct stellar_event *event;
+	struct stellar_event_base_loop_arg *thread_arg = (struct stellar_event_base_loop_arg *)arg;
 	while(1)
 	{
-		int fetch_num = packet_io_rx(arg->dev, arg->thread_id, &rx_pkt, 1);
+		int fetch_num = packet_io_rx(thread_arg->dev, thread_arg->tid, &rx_pkt, 1);
 		if(fetch_num > 0)
 		{
-			event = session_manager_commit(arg->s_mgr, rx_pkt);
+			event = session_manager_commit(thread_arg->session_mgr, rx_pkt);
 			while(event)
 			{
-				plugin_manager_dispatch(event);
-				event = session_manager_fetch_event(arg->s_mgr);
+				plugin_manager_dispatch(thread_arg->plug_mgr ,event);
+				event = session_manager_fetch_event(thread_arg->session_mgr);
 			}
 
 			//clean session_manager event queue
-			packet_io_tx(arg->dev, arg->thread_id, &rx_pkt, 1);
+			packet_io_tx(thread_arg->dev, thread_arg->tid, &rx_pkt, 1);
 		}
 		else
 		{
@@ -36,7 +41,7 @@ void stellar_event_base_loop(struct stellar_event_base_loop_arg *arg)
 			//dispatch to trigger polling event 
 		}
 	}
-	return;
+	return nullptr;
 }
 
 
@@ -49,13 +54,27 @@ struct packet_io_device *packet_io_init(int worker_thread_num, const char *insta
 
 int main(int argc, char ** argv)
 {
-	//config_init
-	struct session_manager_handle *h = session_manager_init();
-	plugin_session_event_register("HTTP", http_decoder, nullptr);
+	//manager_init
+	struct session_manager_handle *session_mgr = session_manager_init();
+	struct plugin_manager_handle *plug_mgr = plugin_manager_init();
+
+	//register build-in plugin
+	plugin_manager_event_register(plug_mgr, "HTTP", http_decoder, nullptr);
+	// load external plugins
+	plugin_manager_load("./plugins.inf");
+
 	//packet_io_init
-
+	struct packet_io_device *dev = packet_io_init(1, "stellar", "cap0");
 	//create_worker_thread
-
+	stellar_event_base_loop_arg arg = {dev, session_mgr, plug_mgr, 0};
+	pthread_t worker_pid;
+	pthread_create(&worker_pid, NULL, stellar_event_base_loop, (void *)&arg);
 	//main_loop
+	while (1)
+	{
+		/* main loop code */
+		usleep(1);
+	}
+	
 	return 0;
 }
diff --git a/src/plugin_manager/plugin_manager.cpp b/src/plugin_manager/plugin_manager.cpp
index 4fe54ce..267d75c 100644
--- a/src/plugin_manager/plugin_manager.cpp
+++ b/src/plugin_manager/plugin_manager.cpp
@@ -28,17 +28,27 @@ struct plugin_manager
 	struct session_event_callback_map *session_ev_cb_map;
 };
 
-struct plugin_manager g_plug_mgr;
 #endif
 
-int plugin_session_event_register(const char *session_name, 
+struct plugin_manager_handle *plugin_manager_init()
+{
+	return nullptr;
+}
+
+int plugin_manager_load(const char *plugin_conf_path)
+{
+	return 0;
+}
+
+int plugin_manager_event_register(struct plugin_manager_handle *h,
+				  const char *session_type_name, 
                                   fn_session_event_callback call_back, 
                                   const struct timeval *timeout)
 {
 	return 0;
 }
 
-void plugin_manager_dispatch(struct stellar_event *event)
+void plugin_manager_dispatch(struct plugin_manager_handle *h, struct stellar_event *event)
 {
 #if 0
 	struct session *s = container_of(event, struct session, cur_ev);
diff --git a/src/plugin_manager/plugin_manager.h b/src/plugin_manager/plugin_manager.h
index d2b9672..65961bb 100644
--- a/src/plugin_manager/plugin_manager.h
+++ b/src/plugin_manager/plugin_manager.h
@@ -2,6 +2,7 @@
 #pragma once
 
 #include <sys/queue.h>
+#include <time.h>
 
 #include "sdk/include/session.h"
 #include "sdk/include/plugin.h"
@@ -21,5 +22,14 @@ struct stellar_plugin_data
     stellar_plugin_ctx_list plugin_ctx_list;
 };
 
+struct plugin_manager_handle;
+struct plugin_manager_handle *plugin_manager_init();
 
-void plugin_manager_dispatch(struct stellar_event *ev);
\ No newline at end of file
+int plugin_manager_event_register(struct plugin_manager_handle *h,
+                                  const char *session_type_name, 
+                                  fn_session_event_callback call_back, 
+                                  const struct timeval *timeout);
+
+int plugin_manager_load(const char *plugin_conf_path);
+
+void plugin_manager_dispatch(struct plugin_manager_handle *h, struct stellar_event *ev);
\ No newline at end of file
diff --git a/src/session_manager/session_manager.cpp b/src/session_manager/session_manager.cpp
index b374920..ec8521e 100644
--- a/src/session_manager/session_manager.cpp
+++ b/src/session_manager/session_manager.cpp
@@ -19,7 +19,7 @@ void session_manager_trigger_event(struct stellar_session *s,
 }
 
 struct stellar_session *session_manager_session_derive(const struct stellar_session *this_session, 
-                                               const char *new_session_name)
+                                               const char *new_session_type_name)
 {
 	return nullptr;
 }
diff --git a/src/session_manager/session_manager.h b/src/session_manager/session_manager.h
index 93c13da..d18def7 100644
--- a/src/session_manager/session_manager.h
+++ b/src/session_manager/session_manager.h
@@ -15,8 +15,8 @@ struct stellar_session_event_data
 struct session_manager_handle;
 struct session_manager_handle *session_manager_init();
 
-struct stellar_event *session_manager_commit(struct session_manager_handle *s_mgr, struct stellar_packet *pkt);
-struct stellar_event *session_manager_fetch_event(struct session_manager_handle *s_mgr);
+struct stellar_event *session_manager_commit(struct session_manager_handle *session_mgr, struct stellar_packet *pkt);
+struct stellar_event *session_manager_fetch_event(struct session_manager_handle *session_mgr);
 
 struct stellar_session
 {

From 717f52e4c1f96f49475722f4dd747ad532d7c034 Mon Sep 17 00:00:00 2001
From: zhengchao <contact@zhengchao.io>
Date: Wed, 27 Jul 2022 11:14:49 +0800
Subject: [PATCH 04/17] Add readme.md

---
 docs/imgs/stellar-high-level-design.png | Bin 0 -> 16669 bytes
 readme.md                               |  16 ++++++++++++++++
 2 files changed, 16 insertions(+)
 create mode 100644 docs/imgs/stellar-high-level-design.png
 create mode 100644 readme.md

diff --git a/docs/imgs/stellar-high-level-design.png b/docs/imgs/stellar-high-level-design.png
new file mode 100644
index 0000000000000000000000000000000000000000..b9815d9c7454faca326672162b8068e3a0a6576d
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diff --git a/readme.md b/readme.md
new file mode 100644
index 0000000..49278c0
--- /dev/null
+++ b/readme.md
@@ -0,0 +1,16 @@
+# Stellar: A stateful network functions development platform
+
+A stateful network function could be a firewall, a load balancer, or an IDS. 
+
+## Architecture
+
+The stellar components are:
+
+- **Packet IO** built an abstraction of network IO devices.
+- **Session Manager** has a hash table for tracking sessions. The caller feeds packets to the session manager and may return triggered session events.
+- **Plugin Manager** loads C/Lua plugins and manages per-plugin, per-session context. When the caller feeds an event to the plugin manager, it invokes plugin callbacks.
+- **Protocol Decoders** are libraries that parse and extract information from the packet payload.
+- **Active Queue Management** is queue management algorithm libraries that schedule packets by buffering, forwarding, marking, or dropping. A plugin creates a queue instance and enqueues packets as its needs. 
+  - Question: Who consumes the dequeue events?
+
+![stellar-high-level-design](./docs/imgs/stellar-high-level-design.png)
\ No newline at end of file

From 4735a8073a00604636ac8bc4bec8e0667783cec7 Mon Sep 17 00:00:00 2001
From: yangwei <yangwei@iie.ac.cn>
Date: Wed, 27 Jul 2022 14:11:29 +0800
Subject: [PATCH 05/17] =?UTF-8?q?=F0=9F=A6=84=20refactor(plugin=20manager)?=
 =?UTF-8?q?:=20Updating=20interface=20definitions?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 sdk/include/session.h                   | 11 ++++++-----
 src/main.cpp                            |  8 ++++----
 src/plugin_manager/plugin_manager.cpp   | 25 ++++++++++++++++++++-----
 src/plugin_manager/plugin_manager.h     | 25 +++++--------------------
 src/session_manager/session_manager.cpp |  6 +++---
 src/session_manager/session_manager.h   |  8 ++++----
 6 files changed, 42 insertions(+), 41 deletions(-)

diff --git a/sdk/include/session.h b/sdk/include/session.h
index ea3af84..e2ed19e 100644
--- a/sdk/include/session.h
+++ b/sdk/include/session.h
@@ -25,11 +25,12 @@ enum stellar_session_type
 
 enum stellar_session_event_type
 {
-	SESSION_EVENT_OPENING=0x01,
-	SESSION_EVENT_RAW_PKT=0x02,
-	SESSION_EVENT_ORDERED_PKT=0x04,
-	SESSION_EVENT_META=0x08,
-	SESSION_EVENT_CLOSING=0x10,
+	SESSION_EVENT_OPENING = 1<<1,
+	SESSION_EVENT_RAW_PKT = 1<<2,
+	SESSION_EVENT_ORDERED_PKT = 1<<3,
+	SESSION_EVENT_META = 1<<4,
+	SESSION_EVENT_TIMEOUT = 1<<5,
+	SESSION_EVENT_CLOSING = 1<<6,
 };
 
 struct stellar_session_event_extras;
diff --git a/src/main.cpp b/src/main.cpp
index e09573f..891300a 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -9,8 +9,8 @@
 struct stellar_event_base_loop_arg
 {
 	struct packet_io_device *dev;
-	struct session_manager_handle *session_mgr;
-	struct plugin_manager_handle *plug_mgr;
+	struct session_manager *session_mgr;
+	struct plugin_manager *plug_mgr;
 	int tid;
 };
 
@@ -55,8 +55,8 @@ struct packet_io_device *packet_io_init(int worker_thread_num, const char *insta
 int main(int argc, char ** argv)
 {
 	//manager_init
-	struct session_manager_handle *session_mgr = session_manager_init();
-	struct plugin_manager_handle *plug_mgr = plugin_manager_init();
+	struct session_manager *session_mgr = session_manager_init();
+	struct plugin_manager *plug_mgr = plugin_manager_init();
 
 	//register build-in plugin
 	plugin_manager_event_register(plug_mgr, "HTTP", http_decoder, nullptr);
diff --git a/src/plugin_manager/plugin_manager.cpp b/src/plugin_manager/plugin_manager.cpp
index 267d75c..4fba201 100644
--- a/src/plugin_manager/plugin_manager.cpp
+++ b/src/plugin_manager/plugin_manager.cpp
@@ -1,8 +1,8 @@
+#include <sys/queue.h>
+#include <time.h>
+
 #include "deps/uthash/uthash.h"
-
 #include "sdk/include/session.h"
-
-
 #include "session_manager.h"
 
 #if 0
@@ -30,6 +30,21 @@ struct plugin_manager
 
 #endif
 
+struct stellar_plugin_ctx
+{
+    void *call_back_arg;
+    const struct timeval timeout;
+    fn_session_event_callback call_back;
+    TAILQ_ENTRY(stellar_plugin_ctx) tqe;
+};
+
+TAILQ_HEAD(stellar_plugin_ctx_list, stellar_plugin_ctx);
+
+struct stellar_plugin_data
+{
+    stellar_plugin_ctx_list plugin_ctx_list;
+};
+
 struct plugin_manager_handle *plugin_manager_init()
 {
 	return nullptr;
@@ -40,7 +55,7 @@ int plugin_manager_load(const char *plugin_conf_path)
 	return 0;
 }
 
-int plugin_manager_event_register(struct plugin_manager_handle *h,
+int plugin_manager_event_register(struct plugin_manager *h,
 				  const char *session_type_name, 
                                   fn_session_event_callback call_back, 
                                   const struct timeval *timeout)
@@ -48,7 +63,7 @@ int plugin_manager_event_register(struct plugin_manager_handle *h,
 	return 0;
 }
 
-void plugin_manager_dispatch(struct plugin_manager_handle *h, struct stellar_event *event)
+void plugin_manager_dispatch(struct plugin_manager *h, struct stellar_event *event)
 {
 #if 0
 	struct session *s = container_of(event, struct session, cur_ev);
diff --git a/src/plugin_manager/plugin_manager.h b/src/plugin_manager/plugin_manager.h
index 65961bb..cfe2905 100644
--- a/src/plugin_manager/plugin_manager.h
+++ b/src/plugin_manager/plugin_manager.h
@@ -1,35 +1,20 @@
 
 #pragma once
 
-#include <sys/queue.h>
-#include <time.h>
+
 
 #include "sdk/include/session.h"
 #include "sdk/include/plugin.h"
 
-struct stellar_plugin_ctx
-{
-    void *call_back_arg;
-    const struct timeval timeout;
-    fn_session_event_callback call_back;
-    TAILQ_ENTRY(stellar_plugin_ctx) tqe;
-};
 
-TAILQ_HEAD(stellar_plugin_ctx_list, stellar_plugin_ctx);
+struct plugin_manager;
+struct plugin_manager *plugin_manager_init();
 
-struct stellar_plugin_data
-{
-    stellar_plugin_ctx_list plugin_ctx_list;
-};
-
-struct plugin_manager_handle;
-struct plugin_manager_handle *plugin_manager_init();
-
-int plugin_manager_event_register(struct plugin_manager_handle *h,
+int plugin_manager_event_register(struct plugin_manager *h,
                                   const char *session_type_name, 
                                   fn_session_event_callback call_back, 
                                   const struct timeval *timeout);
 
 int plugin_manager_load(const char *plugin_conf_path);
 
-void plugin_manager_dispatch(struct plugin_manager_handle *h, struct stellar_event *ev);
\ No newline at end of file
+void plugin_manager_dispatch(struct plugin_manager *h, struct stellar_event *ev);
\ No newline at end of file
diff --git a/src/session_manager/session_manager.cpp b/src/session_manager/session_manager.cpp
index ec8521e..ff10c3e 100644
--- a/src/session_manager/session_manager.cpp
+++ b/src/session_manager/session_manager.cpp
@@ -5,7 +5,7 @@ struct session_manager
 	struct stellar_session **tcp_table, **udp_table;
 };
 
-struct session_manager_handle *session_manager_init()
+struct session_manager *session_manager_init()
 {
 	return nullptr;
 }
@@ -24,13 +24,13 @@ struct stellar_session *session_manager_session_derive(const struct stellar_sess
 	return nullptr;
 }
 
-struct stellar_event *session_manager_commit(struct session_manager_handle *h, struct stellar_packet *p)
+struct stellar_event *session_manager_commit(struct session_manager *h, struct stellar_packet *p)
 {
 	return nullptr;
 };
 
 
-struct stellar_event *session_manager_fetch_event(struct session_manager_handle *h)
+struct stellar_event *session_manager_fetch_event(struct session_manager *h)
 {
 	return nullptr;
 }
diff --git a/src/session_manager/session_manager.h b/src/session_manager/session_manager.h
index d18def7..047d8c5 100644
--- a/src/session_manager/session_manager.h
+++ b/src/session_manager/session_manager.h
@@ -12,11 +12,11 @@ struct stellar_session_event_data
     struct stellar_plugin_data *plugin_data;
 };
 
-struct session_manager_handle;
-struct session_manager_handle *session_manager_init();
+struct session_manager;
+struct session_manager *session_manager_init();
 
-struct stellar_event *session_manager_commit(struct session_manager_handle *session_mgr, struct stellar_packet *pkt);
-struct stellar_event *session_manager_fetch_event(struct session_manager_handle *session_mgr);
+struct stellar_event *session_manager_commit(struct session_manager *session_mgr, struct stellar_packet *pkt);
+struct stellar_event *session_manager_fetch_event(struct session_manager *session_mgr);
 
 struct stellar_session
 {

From dd54381cb00def84782511c4feb21ad570b4cb1a Mon Sep 17 00:00:00 2001
From: yangwei <yangwei@iie.ac.cn>
Date: Wed, 27 Jul 2022 14:48:50 +0800
Subject: [PATCH 06/17] =?UTF-8?q?=F0=9F=93=83=20docs(readme):=20update=20s?=
 =?UTF-8?q?tellar-high-level-design.svg?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 docs/imgs/stellar-high-level-design.png | Bin 16669 -> 0 bytes
 docs/imgs/stellar-high-level-design.svg |   4 ++++
 readme.md                               |   2 +-
 3 files changed, 5 insertions(+), 1 deletion(-)
 delete mode 100644 docs/imgs/stellar-high-level-design.png
 create mode 100644 docs/imgs/stellar-high-level-design.svg

diff --git a/docs/imgs/stellar-high-level-design.png b/docs/imgs/stellar-high-level-design.png
deleted file mode 100644
index b9815d9c7454faca326672162b8068e3a0a6576d..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

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text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 242px; height: 1px; padding-top: 34px; margin-left: 94px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div style="font-size: 1px"><font style="font-size:16.93px;font-family:SimSun;color:#000000;direction:ltr;letter-spacing:0px;line-height:120%;opacity:1">Built-in Network Functions<br />(.a)<br /></font></div></div></div></div></foreignObject><text x="215" y="38" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Built-in Network Functions...</text></switch></g><path d="M 348 68 L 592 68 L 592 0 L 348 0 L 348 68" fill="none" stroke="#000000" stroke-miterlimit="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; 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text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 210px; height: 1px; padding-top: 190px; margin-left: 665px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div style="font-size: 1px"><p style="align:center;margin-left:0;margin-right:0;margin-top:0px;margin-bottom:0px;text-indent:0;valign:middle;direction:ltr;"><font style="font-size:16.93px;font-family:SimSun;color:#000000;direction:ltr;letter-spacing:0px;line-height:120%;opacity:1">Protocol Decoders<br /></font><font style="font-size:14.11px;font-family:Themed;color:#000000;direction:ltr;letter-spacing:0px;line-height:120%;opacity:1">(HTTP, DNS, SSL, etc.)</font><font style="font-size:16.93px;font-family:Themed;color:#000000;direction:ltr;letter-spacing:0px;line-height:120%;opacity:1"><br /></font></p></div></div></div></div></foreignObject><text x="770" y="194" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Protocol Decoders...</text></switch></g><path d="M 664 304 L 876 304 L 876 236 L 664 236 L 664 304" fill="none" stroke="#000000" stroke-miterlimit="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; 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text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 73px; margin-left: 635px;"><div data-drawio-colors="color: rgb(0, 0, 0); background-color: #ffffff; " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 11px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; background-color: rgb(255, 255, 255); white-space: nowrap;"><div style="font-size: 1px"><font style="font-size:12.7px;font-family:SimSun;color:#000000;direction:ltr;letter-spacing:0px;line-height:120%;opacity:1">Callback &amp; Context<br /></font></div></div></div></div></foreignObject><text x="635" y="77" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="11px" text-anchor="middle">Callback &amp; Context&#xa;</text></switch></g><path d="M 93 194 L 41.14 194 L 41.14 114 L 85.88 114" fill="none" stroke="#000000" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 91.88 114 L 85.88 117 L 85.88 111 Z" fill="#000000" stroke="#000000" stroke-miterlimit="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 154px; margin-left: 51px;"><div data-drawio-colors="color: rgb(0, 0, 0); background-color: #ffffff; " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 11px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; background-color: rgb(255, 255, 255); white-space: nowrap;"><div style="font-size: 1px"><font style="font-size:12.7px;font-family:SimSun;color:#000000;direction:ltr;letter-spacing:0px;line-height:120%;opacity:1">Session &amp; Events<br /></font></div></div></div></div></foreignObject><text x="51" y="157" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="11px" text-anchor="middle">Session &amp; Events&#xa;</text></switch></g><path d="M 593 274 L 624.76 274 L 624.76 194 L 600.12 194" fill="none" stroke="#000000" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 594.12 194 L 600.12 191 L 600.12 197 Z" fill="#000000" stroke="#000000" stroke-miterlimit="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 234px; margin-left: 635px;"><div data-drawio-colors="color: rgb(0, 0, 0); background-color: #ffffff; " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 11px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; background-color: rgb(255, 255, 255); white-space: nowrap;"><div style="font-size: 1px"><font style="font-size:12.7px;font-family:SimSun;color:#000000;direction:ltr;letter-spacing:0px;line-height:120%;opacity:1">Packet<br /></font></div></div></div></div></foreignObject><text x="635" y="237" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="11px" text-anchor="middle">Packet&#xa;</text></switch></g></g><switch><g requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"/><a transform="translate(0,-5)" xlink:href="https://www.diagrams.net/doc/faq/svg-export-text-problems" target="_blank"><text text-anchor="middle" font-size="10px" x="50%" y="100%">Text is not SVG - cannot display</text></a></switch></svg>
\ No newline at end of file
diff --git a/readme.md b/readme.md
index 49278c0..0e1b1ff 100644
--- a/readme.md
+++ b/readme.md
@@ -13,4 +13,4 @@ The stellar components are:
 - **Active Queue Management** is queue management algorithm libraries that schedule packets by buffering, forwarding, marking, or dropping. A plugin creates a queue instance and enqueues packets as its needs. 
   - Question: Who consumes the dequeue events?
 
-![stellar-high-level-design](./docs/imgs/stellar-high-level-design.png)
\ No newline at end of file
+![stellar-high-level-design](./docs/imgs/stellar-high-level-design.svg)
\ No newline at end of file

From 61e3c264f319123ac329289c44958a9b7bb5a6ab Mon Sep 17 00:00:00 2001
From: luwenpeng <luwenpeng@geedgenetworks.com>
Date: Wed, 27 Jul 2022 15:51:07 +0800
Subject: [PATCH 07/17] Refactored plugin management interface

---
 .../custom_event_plugin.inf                   |   9 +-
 .../http_event_plugin/http_event_plugin.inf   |   7 +-
 sdk/include/http.h                            |   2 +-
 sdk/include/plugin.h                          |   3 +
 sdk/include/session.h                         |  18 +-
 src/main.cpp                                  |  12 +-
 src/plugin_manager/plugin_manager.cpp         | 182 ++++++++++++------
 src/plugin_manager/plugin_manager.h           |  20 +-
 src/protocol_decoder/http/http.cpp            |   3 +-
 src/session_manager/session_manager.cpp       |   2 +-
 src/session_manager/session_manager.h         |  10 +-
 11 files changed, 168 insertions(+), 100 deletions(-)

diff --git a/sdk/example/plugins/custom_event_plugin/custom_event_plugin.inf b/sdk/example/plugins/custom_event_plugin/custom_event_plugin.inf
index 78107e1..479d474 100644
--- a/sdk/example/plugins/custom_event_plugin/custom_event_plugin.inf
+++ b/sdk/example/plugins/custom_event_plugin/custom_event_plugin.inf
@@ -1,13 +1,16 @@
 [PLUGINFO]
 INIT_FUNC=custom_plugin_init
-DESTROY_FUNC=custom_plugin_destroy
-LIBARY_PATH=./plugins/custom_event_plugin/custom_event_plugin.so
+EXIT_FUNC=custom_plugin_exit
+LIBRARY_PATH=./plugins/custom_event_plugin/custom_event_plugin.so
 
 
+# Support SESSION_EVENT_TYPE
+# OPENING,RAWPKT,ORDPKT,META,CLOSING,ALL
+
 [SESSION_TYPE.TCP]
 SESSION_EVENT_TYPE=ALL
 SESSION_EVENT_CALLBACK=custom_plugin_entry
 
 [SESSION_TYPE.CUSTOM_A]
-SESSION_EVENT_TYPE=ALL
+SESSION_EVENT_TYPE=OPENING,ORDPKT,CLOSING
 SESSION_EVENT_CALLBACK=custom_event_plugin_entry
\ No newline at end of file
diff --git a/sdk/example/plugins/http_event_plugin/http_event_plugin.inf b/sdk/example/plugins/http_event_plugin/http_event_plugin.inf
index 62b7a4a..4609300 100644
--- a/sdk/example/plugins/http_event_plugin/http_event_plugin.inf
+++ b/sdk/example/plugins/http_event_plugin/http_event_plugin.inf
@@ -1,9 +1,8 @@
 [PLUGINFO]
 INIT_FUNC=http_event_plugin_init
-DESTROY_FUNC=http_event_plugin_destroy
-LIBARY_PATH=./plugins/http_event_plugin/http_event_plugin.so
+EXIT_FUNC=http_event_plugin_exit
+LIBRARY_PATH=./plugins/http_event_plugin/http_event_plugin.so
 
-
-[SESSION_TYPE_HTTP]
+[SESSION_TYPE.HTTP]
 SESSION_EVENT_TYPE=ALL
 SESSION_EVENT_CALLBACK=http_event_plugin_entry
\ No newline at end of file
diff --git a/sdk/include/http.h b/sdk/include/http.h
index 62b1fbd..d7f3fbf 100644
--- a/sdk/include/http.h
+++ b/sdk/include/http.h
@@ -3,4 +3,4 @@
 #include "packet.h"
 #include "session.h"
 
-int http_decoder(const struct stellar_session *s, int what, struct stellar_packet *p, const char *payload, uint32_t len, void **pme);
+void http_decoder(const struct stellar_session *s, int what, struct stellar_packet *p, const char *payload, uint16_t len, void **pme);
\ No newline at end of file
diff --git a/sdk/include/plugin.h b/sdk/include/plugin.h
index 11d55cc..ac3b279 100644
--- a/sdk/include/plugin.h
+++ b/sdk/include/plugin.h
@@ -2,5 +2,8 @@
 
 #include "session.h"
 
+typedef int plugin_init_callback(void **pme);
+typedef void plugin_exit_callback(void *pme);
+
 void plugin_remove_from_session_event(struct stellar_event *ev,
                                  struct stellar_session *s);
\ No newline at end of file
diff --git a/sdk/include/session.h b/sdk/include/session.h
index e2ed19e..b497fab 100644
--- a/sdk/include/session.h
+++ b/sdk/include/session.h
@@ -23,22 +23,22 @@ enum stellar_session_type
 	SESSION_TYPE_MAX,
 };
 
-enum stellar_session_event_type
+enum session_event_type
 {
-	SESSION_EVENT_OPENING = 1<<1,
-	SESSION_EVENT_RAW_PKT = 1<<2,
-	SESSION_EVENT_ORDERED_PKT = 1<<3,
-	SESSION_EVENT_META = 1<<4,
-	SESSION_EVENT_TIMEOUT = 1<<5,
-	SESSION_EVENT_CLOSING = 1<<6,
+	SESSION_EVENT_OPENING = (0x01 << 1),
+	SESSION_EVENT_RAWPKT = (0x01 << 2),
+	SESSION_EVENT_ORDPKT = (0x01 << 3),
+	SESSION_EVENT_META = (0x01 << 4),
+	SESSION_EVENT_CLOSING = (0x01 << 5),
+	SESSION_EVENT_ALL = (0x01 << 1 | 0x01 << 2 | 0x01 << 3 | 0x01 << 4 | 0x01 << 5),
 };
 
 struct stellar_session_event_extras;
 
-typedef int (*fn_session_event_callback)(const struct stellar_session *s, int what, struct stellar_packet *p, const char *payload, uint32_t len, void **pme);
+typedef void (fn_session_event_callback)(const struct stellar_session *s, int what, struct stellar_packet *p, const char *payload, uint16_t len, void **pme);
 
 void session_manager_trigger_event(struct stellar_session *s, 
-                                   stellar_session_event_type type,
+                                   enum session_event_type type,
                                    struct stellar_session_event_extras *info);
 
 struct stellar_session *session_manager_session_derive(const struct stellar_session *this_session, 
diff --git a/src/main.cpp b/src/main.cpp
index 891300a..5071278 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -56,12 +56,14 @@ int main(int argc, char ** argv)
 {
 	//manager_init
 	struct session_manager *session_mgr = session_manager_init();
-	struct plugin_manager *plug_mgr = plugin_manager_init();
+	struct plugin_manager *plug_mgr = plugin_manager_create();
+
+	// register build-in plugin
+	plugin_manager_register(plug_mgr, "HTTP", http_decoder);
 
-	//register build-in plugin
-	plugin_manager_event_register(plug_mgr, "HTTP", http_decoder, nullptr);
 	// load external plugins
-	plugin_manager_load("./plugins.inf");
+	char absolute_plugin_file[] = "/op/tsg/sapp/plug/plugins.inf";
+	plugin_manager_load(plug_mgr, absolute_plugin_file);
 
 	//packet_io_init
 	struct packet_io_device *dev = packet_io_init(1, "stellar", "cap0");
@@ -75,6 +77,8 @@ int main(int argc, char ** argv)
 		/* main loop code */
 		usleep(1);
 	}
+
+	plugin_manager_destory(plug_mgr);
 	
 	return 0;
 }
diff --git a/src/plugin_manager/plugin_manager.cpp b/src/plugin_manager/plugin_manager.cpp
index 4fba201..1755cc4 100644
--- a/src/plugin_manager/plugin_manager.cpp
+++ b/src/plugin_manager/plugin_manager.cpp
@@ -1,97 +1,153 @@
-#include <sys/queue.h>
-#include <time.h>
-
 #include "deps/uthash/uthash.h"
 #include "sdk/include/session.h"
+#include "sdk/include/plugin.h"
 #include "session_manager.h"
+#include "plugin_manager.h"
 
-#if 0
-struct session_event_callback
+#include <sys/queue.h>
+#include <assert.h>
+
+/******************************************************************************
+ * CallBack Static Hash Table (For Global)
+ ******************************************************************************/
+
+struct session_event_callback_static
 {
-	const char *session_name;
-	fn_session_event_callback callback;
-	TAILQ_ENTRY(session_event_callback) entries;
-	UT_hash_handle hh;	
+	enum session_event_type event;
+	fn_session_event_callback *callback;
 };
 
-TAILQ_HEAD(session_event_callback_list, session_event_callback);
-
-struct session_event_callback_map
+/*
+ * Hast table
+ *
+ * key: string -> session_type
+ * val: array  -> event_cbs
+ */
+struct managed_session_event_callback
 {
-	struct session_event_callback_list  session_ev_cb_list;
-	UT_hash_handle hh;	
+	char session_type[16];
+	struct session_event_callback_static event_cbs[0]; // dynamic array
+	// Record the number of callback functions that want to process the current session
+	int event_cbs_num;
+	UT_hash_handle hh;
+};
+
+/******************************************************************************
+ * CallBack Runtime Array (For Per Session)
+ ******************************************************************************/
+
+struct session_event_callback_runtime
+{
+	int skip; // for skip this plugin callback
+	void *callback_args;
+
+	enum session_event_type event;
+	fn_session_event_callback *callback;
+};
+
+struct session_plugin_ctx
+{
+	int event_cbs_num;
+	struct session_event_callback_runtime event_cbs[0]; // dynamic array
+};
+
+/******************************************************************************
+ * struct plugin_manager
+ ******************************************************************************/
+
+/*
+ * Each plugin has an init_cb and an exit_cb, but may have multiple entry_cb.
+ * entry_cb is stored in the global_session_callback_ctx.
+ */
+struct plugin_ctx
+{
+	char *name;
+	char *library;
+	/*
+	 * Stores the context generated by the plugin initialization,
+	 * which is used to release resources when the plugin ends.
+	 */
+	void *pme;
+	plugin_init_callback *init_cb;
+	plugin_exit_callback *exit_cb;
 };
 
 struct plugin_manager
 {
-	struct session_event_callback_list fixed_event_cbs[SESSION_TYPE_MAX];
-	struct session_event_callback_map *session_ev_cb_map;
+	struct managed_session_event_callback *cb_table;
+	struct plugin_ctx plugins[MAX_PLUGIN_NUM];
 };
 
-#endif
+/******************************************************************************
+ * Private API
+ ******************************************************************************/
 
-struct stellar_plugin_ctx
+static void plugin_manager_handle_opening_event(struct plugin_manager *plug_mgr, struct stellar_event *event)
 {
-    void *call_back_arg;
-    const struct timeval timeout;
-    fn_session_event_callback call_back;
-    TAILQ_ENTRY(stellar_plugin_ctx) tqe;
-};
-
-TAILQ_HEAD(stellar_plugin_ctx_list, stellar_plugin_ctx);
-
-struct stellar_plugin_data
-{
-    stellar_plugin_ctx_list plugin_ctx_list;
-};
-
-struct plugin_manager_handle *plugin_manager_init()
-{
-	return nullptr;
 }
 
-int plugin_manager_load(const char *plugin_conf_path)
+static void plugin_manager_handle_data_event(struct plugin_manager *plug_mgr, struct stellar_event *event)
+{
+}
+
+static void plugin_manager_handle_closing_event(struct plugin_manager *plug_mgr, struct stellar_event *event)
+{
+}
+
+/******************************************************************************
+ * Public API
+ ******************************************************************************/
+
+struct plugin_manager *plugin_manager_create()
+{
+	struct plugin_manager *plug_mgr = NULL;
+
+	return plug_mgr;
+}
+
+void plugin_manager_destory(struct plugin_manager *plug_mgr)
+{
+	if (plug_mgr)
+	{
+	}
+}
+
+int plugin_manager_load(struct plugin_manager *plug_mgr, const char *plugin_file)
 {
 	return 0;
 }
 
-int plugin_manager_event_register(struct plugin_manager *h,
-				  const char *session_type_name, 
-                                  fn_session_event_callback call_back, 
-                                  const struct timeval *timeout)
+void plugin_manager_unload(struct plugin_manager *plug_mgr)
+{
+}
+
+int plugin_manager_register(struct plugin_manager *plug_mgr, const char *session_type, fn_session_event_callback *callback)
 {
 	return 0;
 }
 
-void plugin_manager_dispatch(struct plugin_manager *h, struct stellar_event *event)
+void plugin_manager_dispatch(struct plugin_manager *plug_mgr, struct stellar_event *event)
 {
-#if 0
-	struct session *s = container_of(event, struct session, cur_ev);
-	struct session_event_callback_map *t_map;
-	struct session_event_callback *session_ev_cb;
-	HASH_FIND(hh, g_plug_mgr.session_ev_cb_map, s->name, strlen(s->name), t_map);
-	if(!t_map) return;
-	switch (s->state)
+	assert(event);
+	struct stellar_session_event_data *event_data = event->session_event_data;
+	assert(event_data);
+	session_event_type type = event_data->type;
+
+	switch (type)
 	{
 	case SESSION_EVENT_OPENING:
-		TAILQ_FOREACH(session_ev_cb, &t_map->session_ev_cb_list, session_event_cb_tq_entries)
-		{
-			struct session_event *ev = ALLOC(struct session_event, 1);
-			ev->callback = session_ev_cb->callback;
-			ev->callback(s, SESSION_EVENT_OPENING, NULL, NULL, 0, &ev->cb_pme);
-			if(ev->state == 1)
-			{
-				TAILQ_INSERT_TAIL(&s->ev_list, ev, session_event_tq_entries);
-			}
-			else
-			{
-				FREE(&ev);// TODO;
-			}
-		}
+		plugin_manager_handle_opening_event(plug_mgr, event);
+		break;
+	case SESSION_EVENT_RAWPKT: /* fall through */
+	case SESSION_EVENT_ORDPKT: /* fall through */
+	case SESSION_EVENT_META:   /* fall through */
+		plugin_manager_handle_data_event(plug_mgr, event);
+		break;
+	case SESSION_EVENT_CLOSING:
+		plugin_manager_handle_closing_event(plug_mgr, event);
 		break;
 	default:
+		// TODO log error
 		break;
 	}
-#endif
-	return;
 }
\ No newline at end of file
diff --git a/src/plugin_manager/plugin_manager.h b/src/plugin_manager/plugin_manager.h
index cfe2905..f6a12a3 100644
--- a/src/plugin_manager/plugin_manager.h
+++ b/src/plugin_manager/plugin_manager.h
@@ -1,20 +1,20 @@
 
 #pragma once
 
-
-
 #include "sdk/include/session.h"
-#include "sdk/include/plugin.h"
 
+#define MAX_PLUGIN_NUM 256
 
+struct per_session_event_cbs;
 struct plugin_manager;
-struct plugin_manager *plugin_manager_init();
 
-int plugin_manager_event_register(struct plugin_manager *h,
-                                  const char *session_type_name, 
-                                  fn_session_event_callback call_back, 
-                                  const struct timeval *timeout);
+struct plugin_manager *plugin_manager_create();
+void plugin_manager_destory(struct plugin_manager *plug_mgr);
 
-int plugin_manager_load(const char *plugin_conf_path);
+// return  0: success
+// return -1: error
+int plugin_manager_load(struct plugin_manager *plug_mgr, const char *plugin_file);
+void plugin_manager_unload(struct plugin_manager *plug_mgr);
 
-void plugin_manager_dispatch(struct plugin_manager *h, struct stellar_event *ev);
\ No newline at end of file
+int plugin_manager_register(struct plugin_manager *plug_mgr, const char *session_type, fn_session_event_callback *callback);
+void plugin_manager_dispatch(struct plugin_manager *plug_mgr, struct stellar_event *event);
\ No newline at end of file
diff --git a/src/protocol_decoder/http/http.cpp b/src/protocol_decoder/http/http.cpp
index 13fd4d6..408f149 100644
--- a/src/protocol_decoder/http/http.cpp
+++ b/src/protocol_decoder/http/http.cpp
@@ -1,13 +1,12 @@
 #include "http.h"
 #include "session_manager.h"
 
-int http_decoder(const struct stellar_session *s, int what, struct stellar_packet *p, const char *payload, uint32_t len, void **pme)
+void http_decoder(const struct stellar_session *s, int what, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
 {
 	struct stellar_session_event_extras *info;
 	struct stellar_session *new_session=session_manager_session_derive(s, "HTTP");
 	session_manager_trigger_event(new_session, SESSION_EVENT_OPENING, info);
 	session_manager_trigger_event(new_session, SESSION_EVENT_META, info);
-	return 0;
 }
 
 int http_peek(const struct stellar_session *s, const char *payload, uint32_t len)
diff --git a/src/session_manager/session_manager.cpp b/src/session_manager/session_manager.cpp
index ff10c3e..ab70071 100644
--- a/src/session_manager/session_manager.cpp
+++ b/src/session_manager/session_manager.cpp
@@ -12,7 +12,7 @@ struct session_manager *session_manager_init()
 
 
 void session_manager_trigger_event(struct stellar_session *s, 
-                                   stellar_session_event_type type,
+                                   enum session_event_type type,
                                    struct stellar_session_event_extras *info)
 {
 	return;
diff --git a/src/session_manager/session_manager.h b/src/session_manager/session_manager.h
index 047d8c5..6d17e79 100644
--- a/src/session_manager/session_manager.h
+++ b/src/session_manager/session_manager.h
@@ -2,14 +2,14 @@
 
 #include "sdk/include/session.h"
 
-struct stellar_plugin_data;
+struct per_session_evcb_runtime_ctx;
 
 struct stellar_session_event_data
 {
     struct stellar_session *s;
-    stellar_session_event_type type;
+    enum session_event_type type;
     long last_active;
-    struct stellar_plugin_data *plugin_data;
+    struct session_plugin_ctx *plugin_ctx;
 };
 
 struct session_manager;
@@ -18,6 +18,10 @@ struct session_manager *session_manager_init();
 struct stellar_event *session_manager_commit(struct session_manager *session_mgr, struct stellar_packet *pkt);
 struct stellar_event *session_manager_fetch_event(struct session_manager *session_mgr);
 
+// interfaces for data interaction between stellar event and plugin manager
+struct session_plugin_ctx *stellar_event_get_plugin_ctx(struct stellar_event *event);
+void stellar_event_set_plugin_ctx(struct stellar_event *event, struct session_plugin_ctx *plugin_ctx);
+
 struct stellar_session
 {
     stellar_session_type type;

From 649d29e53887dc122a828d13696d356310ae86d7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=83=91=E8=B6=85?= <zhengchao@mesalab.cn>
Date: Tue, 2 Aug 2022 03:15:32 +0000
Subject: [PATCH 08/17] Update readme.md

---
 readme.md | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 65 insertions(+), 1 deletion(-)

diff --git a/readme.md b/readme.md
index 0e1b1ff..aed4fcc 100644
--- a/readme.md
+++ b/readme.md
@@ -13,4 +13,68 @@ The stellar components are:
 - **Active Queue Management** is queue management algorithm libraries that schedule packets by buffering, forwarding, marking, or dropping. A plugin creates a queue instance and enqueues packets as its needs. 
   - Question: Who consumes the dequeue events?
 
-![stellar-high-level-design](./docs/imgs/stellar-high-level-design.svg)
\ No newline at end of file
+![stellar-high-level-design](./docs/imgs/stellar-high-level-design.svg)
+
+## Packet IO Library
+```
+struct packet
+{
+  enum io_type type;
+  void *raw_pkt;  
+}
+packet_io_loop()
+{
+  packet_io_rx(&rx_pkt)
+  //ingress processing: Tunnel decoding, IP defragmentation
+  session_manager();
+  plugin_manager();
+  //egress processing: AMQ
+  rl_group_id=pkt_get_group_id(rx_pkt);
+  void *raw_pkt=pkt_get_raw(rx_pkt);
+  AMQ_enqueue(group_id[], raw_pkt, pkt_sz);
+
+}
+```
+
+## Plugin Manager
+
+Plugin Management APIs
+```
+pm_session_dettach_me(pm, session);
+pm_session_dettach_others(pm, session);
+```
+## Session Manager
+Session Management APIs
+```
+session_drop_current_packet(session);
+session_set_ratelimit_group(session, rl_group_id);
+session_set_metadata(session, const char *key, void *value, size_t val_sz, free_callback);
+session_get_metadata(session, const char *key, void **value, size_t *val_sz);
+session_del_metadata(session, key)
+session_lock(session, plug_id);
+session_unlock(session, plug_id);
+
+```
+Plugin Example
+```
+plugin_entry(session, pme)
+{
+  session_get_metadata(session, "fw_action", value);
+  if(value==INTERCEPT)
+  {
+    //pm_session_dettach_me(session);
+    return;
+  }
+  ret=check_security_policy(session);
+  if(ret==INTERCEPT)
+  {
+    pm_session_dettach_others(session);
+  }
+  else if(ret==RATE_LIMIT)
+  {
+    group_id=security_policy_id;
+    amq_group_create(group_id, CIR, CBS);
+    session_set_ratelimit_group(session, group_id);
+  }
+}
+```

From 50111e7cd09ff83ecbd53017d0edf6d33b84a801 Mon Sep 17 00:00:00 2001
From: luwenpeng <luwenpeng@geedgenetworks.com>
Date: Wed, 27 Jul 2022 18:32:22 +0800
Subject: [PATCH 09/17] Plugin Management support C plugin

---
 CMakeLists.txt                                |    1 +
 deps/toml/CMakeLists.txt                      |    3 +
 deps/toml/toml.c                              | 2379 +++++++++++++++++
 deps/toml/toml.h                              |  175 ++
 sdk/example/CMakeLists.txt                    |   13 +-
 sdk/example/custom_event_plugin.cpp           |   50 +-
 sdk/example/http_event_plugin.cpp             |   78 +-
 .../custom_event_plugin.inf                   |   22 +-
 .../http_event_plugin/http_event_plugin.inf   |   14 +-
 sdk/example/plugins/plugins.inf               |    6 +-
 sdk/include/http.h                            |    3 +-
 sdk/include/plugin.h                          |   14 +-
 sdk/include/session.h                         |   11 +-
 src/CMakeLists.txt                            |   13 +-
 src/main.cpp                                  |    8 +-
 src/plugin_manager/CMakeLists.txt             |   12 +-
 src/plugin_manager/plugin_manager.cpp         |  480 +++-
 src/plugin_manager/plugin_manager.h           |    8 +-
 src/plugin_manager/plugin_manager_config.cpp  |  358 +++
 src/plugin_manager/plugin_manager_config.h    |   34 +
 src/plugin_manager/plugin_manager_module.cpp  |  168 ++
 src/plugin_manager/plugin_manager_module.h    |   12 +
 src/plugin_manager/plugin_manager_util.cpp    |   40 +
 src/plugin_manager/plugin_manager_util.h      |   61 +
 src/plugin_manager/test/CMakeLists.txt        |   18 +
 .../test/gtest_plugin_manager.cpp             |  159 ++
 .../custom_event_plugin.inf                   |   14 +
 .../http_event_plugin/http_event_plugin.inf   |   10 +
 .../test_plugins/plugins_config/plugins.inf   |    4 +
 .../plugins_library/CMakeLists.txt            |    9 +
 .../plugins_library/custom_event_plugin.cpp   |   58 +
 .../plugins_library/http_event_plugin.cpp     |   82 +
 src/protocol_decoder/http/http.cpp            |   13 +-
 src/session_manager/session_manager.cpp       |   62 +-
 src/session_manager/session_manager.h         |   21 +-
 35 files changed, 4220 insertions(+), 193 deletions(-)
 create mode 100644 deps/toml/CMakeLists.txt
 create mode 100644 deps/toml/toml.c
 create mode 100644 deps/toml/toml.h
 create mode 100644 src/plugin_manager/plugin_manager_config.cpp
 create mode 100644 src/plugin_manager/plugin_manager_config.h
 create mode 100644 src/plugin_manager/plugin_manager_module.cpp
 create mode 100644 src/plugin_manager/plugin_manager_module.h
 create mode 100644 src/plugin_manager/plugin_manager_util.cpp
 create mode 100644 src/plugin_manager/plugin_manager_util.h
 create mode 100644 src/plugin_manager/test/CMakeLists.txt
 create mode 100644 src/plugin_manager/test/gtest_plugin_manager.cpp
 create mode 100644 src/plugin_manager/test/test_plugins/plugins_config/custom_event_plugin/custom_event_plugin.inf
 create mode 100644 src/plugin_manager/test/test_plugins/plugins_config/http_event_plugin/http_event_plugin.inf
 create mode 100644 src/plugin_manager/test/test_plugins/plugins_config/plugins.inf
 create mode 100644 src/plugin_manager/test/test_plugins/plugins_library/CMakeLists.txt
 create mode 100644 src/plugin_manager/test/test_plugins/plugins_library/custom_event_plugin.cpp
 create mode 100644 src/plugin_manager/test/test_plugins/plugins_library/http_event_plugin.cpp

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 29429de..fdb093f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -17,6 +17,7 @@ include_directories(${CMAKE_SOURCE_DIR}/sdk/include)
 
 #add vendor and source directory
 add_subdirectory(vendor)
+add_subdirectory(deps/toml)
 add_subdirectory(src)
 add_subdirectory(sdk/example)
 
diff --git a/deps/toml/CMakeLists.txt b/deps/toml/CMakeLists.txt
new file mode 100644
index 0000000..504c0bf
--- /dev/null
+++ b/deps/toml/CMakeLists.txt
@@ -0,0 +1,3 @@
+set(CMAKE_C_FLAGS "-std=c99")
+add_definitions(-fPIC)
+add_library(toml STATIC toml.c)
\ No newline at end of file
diff --git a/deps/toml/toml.c b/deps/toml/toml.c
new file mode 100644
index 0000000..fafe0da
--- /dev/null
+++ b/deps/toml/toml.c
@@ -0,0 +1,2379 @@
+/*
+
+  MIT License
+
+  Copyright (c) CK Tan
+  https://github.com/cktan/tomlc99
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in all
+  copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+  SOFTWARE.
+
+*/
+#define _POSIX_C_SOURCE 200809L
+#include "toml.h"
+#include <assert.h>
+#include <ctype.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static void *(*ppmalloc)(size_t) = malloc;
+static void (*ppfree)(void *) = free;
+
+void toml_set_memutil(void *(*xxmalloc)(size_t), void (*xxfree)(void *)) {
+  if (xxmalloc)
+    ppmalloc = xxmalloc;
+  if (xxfree)
+    ppfree = xxfree;
+}
+
+#define MALLOC(a) ppmalloc(a)
+#define FREE(a) ppfree(a)
+
+#define malloc(x) error - forbidden - use MALLOC instead
+#define free(x) error - forbidden - use FREE instead
+#define calloc(x, y) error - forbidden - use CALLOC instead
+
+static void *CALLOC(size_t nmemb, size_t sz) {
+  int nb = sz * nmemb;
+  void *p = MALLOC(nb);
+  if (p) {
+    memset(p, 0, nb);
+  }
+  return p;
+}
+
+// some old platforms define strdup macro -- drop it.
+#undef strdup
+#define strdup(x) error - forbidden - use STRDUP instead
+
+static char *STRDUP(const char *s) {
+  int len = strlen(s);
+  char *p = MALLOC(len + 1);
+  if (p) {
+    memcpy(p, s, len);
+    p[len] = 0;
+  }
+  return p;
+}
+
+// some old platforms define strndup macro -- drop it.
+#undef strndup
+#define strndup(x) error - forbiden - use STRNDUP instead
+
+static char *STRNDUP(const char *s, size_t n) {
+  size_t len = strnlen(s, n);
+  char *p = MALLOC(len + 1);
+  if (p) {
+    memcpy(p, s, len);
+    p[len] = 0;
+  }
+  return p;
+}
+
+/**
+ * Convert a char in utf8 into UCS, and store it in *ret.
+ * Return #bytes consumed or -1 on failure.
+ */
+int toml_utf8_to_ucs(const char *orig, int len, int64_t *ret) {
+  const unsigned char *buf = (const unsigned char *)orig;
+  unsigned i = *buf++;
+  int64_t v;
+
+  /* 0x00000000 - 0x0000007F:
+     0xxxxxxx
+  */
+  if (0 == (i >> 7)) {
+    if (len < 1)
+      return -1;
+    v = i;
+    return *ret = v, 1;
+  }
+  /* 0x00000080 - 0x000007FF:
+     110xxxxx 10xxxxxx
+  */
+  if (0x6 == (i >> 5)) {
+    if (len < 2)
+      return -1;
+    v = i & 0x1f;
+    for (int j = 0; j < 1; j++) {
+      i = *buf++;
+      if (0x2 != (i >> 6))
+        return -1;
+      v = (v << 6) | (i & 0x3f);
+    }
+    return *ret = v, (const char *)buf - orig;
+  }
+
+  /* 0x00000800 - 0x0000FFFF:
+     1110xxxx 10xxxxxx 10xxxxxx
+  */
+  if (0xE == (i >> 4)) {
+    if (len < 3)
+      return -1;
+    v = i & 0x0F;
+    for (int j = 0; j < 2; j++) {
+      i = *buf++;
+      if (0x2 != (i >> 6))
+        return -1;
+      v = (v << 6) | (i & 0x3f);
+    }
+    return *ret = v, (const char *)buf - orig;
+  }
+
+  /* 0x00010000 - 0x001FFFFF:
+     11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+  */
+  if (0x1E == (i >> 3)) {
+    if (len < 4)
+      return -1;
+    v = i & 0x07;
+    for (int j = 0; j < 3; j++) {
+      i = *buf++;
+      if (0x2 != (i >> 6))
+        return -1;
+      v = (v << 6) | (i & 0x3f);
+    }
+    return *ret = v, (const char *)buf - orig;
+  }
+
+  /* 0x00200000 - 0x03FFFFFF:
+     111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
+  */
+  if (0x3E == (i >> 2)) {
+    if (len < 5)
+      return -1;
+    v = i & 0x03;
+    for (int j = 0; j < 4; j++) {
+      i = *buf++;
+      if (0x2 != (i >> 6))
+        return -1;
+      v = (v << 6) | (i & 0x3f);
+    }
+    return *ret = v, (const char *)buf - orig;
+  }
+
+  /* 0x04000000 - 0x7FFFFFFF:
+     1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
+  */
+  if (0x7e == (i >> 1)) {
+    if (len < 6)
+      return -1;
+    v = i & 0x01;
+    for (int j = 0; j < 5; j++) {
+      i = *buf++;
+      if (0x2 != (i >> 6))
+        return -1;
+      v = (v << 6) | (i & 0x3f);
+    }
+    return *ret = v, (const char *)buf - orig;
+  }
+  return -1;
+}
+
+/**
+ *	Convert a UCS char to utf8 code, and return it in buf.
+ *	Return #bytes used in buf to encode the char, or
+ *	-1 on error.
+ */
+int toml_ucs_to_utf8(int64_t code, char buf[6]) {
+  /* http://stackoverflow.com/questions/6240055/manually-converting-unicode-codepoints-into-utf-8-and-utf-16
+   */
+  /* The UCS code values 0xd800–0xdfff (UTF-16 surrogates) as well
+   * as 0xfffe and 0xffff (UCS noncharacters) should not appear in
+   * conforming UTF-8 streams.
+   */
+  if (0xd800 <= code && code <= 0xdfff)
+    return -1;
+  if (0xfffe <= code && code <= 0xffff)
+    return -1;
+
+  /* 0x00000000 - 0x0000007F:
+     0xxxxxxx
+  */
+  if (code < 0)
+    return -1;
+  if (code <= 0x7F) {
+    buf[0] = (unsigned char)code;
+    return 1;
+  }
+
+  /* 0x00000080 - 0x000007FF:
+     110xxxxx 10xxxxxx
+  */
+  if (code <= 0x000007FF) {
+    buf[0] = (unsigned char) (0xc0 | (code >> 6));
+    buf[1] = (unsigned char) (0x80 | (code & 0x3f));
+    return 2;
+  }
+
+  /* 0x00000800 - 0x0000FFFF:
+     1110xxxx 10xxxxxx 10xxxxxx
+  */
+  if (code <= 0x0000FFFF) {
+    buf[0] = (unsigned char) (0xe0 | (code >> 12));
+    buf[1] = (unsigned char) (0x80 | ((code >> 6) & 0x3f));
+    buf[2] = (unsigned char) (0x80 | (code & 0x3f));
+    return 3;
+  }
+
+  /* 0x00010000 - 0x001FFFFF:
+     11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+  */
+  if (code <= 0x001FFFFF) {
+    buf[0] = (unsigned char) (0xf0 | (code >> 18));
+    buf[1] = (unsigned char) (0x80 | ((code >> 12) & 0x3f));
+    buf[2] = (unsigned char) (0x80 | ((code >> 6) & 0x3f));
+    buf[3] = (unsigned char) (0x80 | (code & 0x3f));
+    return 4;
+  }
+
+  /* 0x00200000 - 0x03FFFFFF:
+     111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
+  */
+  if (code <= 0x03FFFFFF) {
+    buf[0] = (unsigned char) (0xf8 | (code >> 24));
+    buf[1] = (unsigned char) (0x80 | ((code >> 18) & 0x3f));
+    buf[2] = (unsigned char) (0x80 | ((code >> 12) & 0x3f));
+    buf[3] = (unsigned char) (0x80 | ((code >> 6) & 0x3f));
+    buf[4] = (unsigned char) (0x80 | (code & 0x3f));
+    return 5;
+  }
+
+  /* 0x04000000 - 0x7FFFFFFF:
+     1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
+  */
+  if (code <= 0x7FFFFFFF) {
+    buf[0] = (unsigned char) (0xfc | (code >> 30));
+    buf[1] = (unsigned char) (0x80 | ((code >> 24) & 0x3f));
+    buf[2] = (unsigned char) (0x80 | ((code >> 18) & 0x3f));
+    buf[3] = (unsigned char) (0x80 | ((code >> 12) & 0x3f));
+    buf[4] = (unsigned char) (0x80 | ((code >> 6) & 0x3f));
+    buf[5] = (unsigned char) (0x80 | (code & 0x3f));
+    return 6;
+  }
+
+  return -1;
+}
+
+/*
+ *	TOML has 3 data structures: value, array, table.
+ *	Each of them can have identification key.
+ */
+typedef struct toml_keyval_t toml_keyval_t;
+struct toml_keyval_t {
+  const char *key; /* key to this value */
+  const char *val; /* the raw value */
+};
+
+typedef struct toml_arritem_t toml_arritem_t;
+struct toml_arritem_t {
+  int valtype; /* for value kind: 'i'nt, 'd'ouble, 'b'ool, 's'tring, 't'ime,
+                  'D'ate, 'T'imestamp */
+  char *val;
+  toml_array_t *arr;
+  toml_table_t *tab;
+};
+
+struct toml_array_t {
+  const char *key; /* key to this array */
+  int kind;        /* element kind: 'v'alue, 'a'rray, or 't'able, 'm'ixed */
+  int type;        /* for value kind: 'i'nt, 'd'ouble, 'b'ool, 's'tring, 't'ime,
+                      'D'ate, 'T'imestamp, 'm'ixed */
+
+  int nitem; /* number of elements */
+  toml_arritem_t *item;
+};
+
+struct toml_table_t {
+  const char *key; /* key to this table */
+  bool implicit;   /* table was created implicitly */
+  bool readonly;   /* no more modification allowed */
+
+  /* key-values in the table */
+  int nkval;
+  toml_keyval_t **kval;
+
+  /* arrays in the table */
+  int narr;
+  toml_array_t **arr;
+
+  /* tables in the table */
+  int ntab;
+  toml_table_t **tab;
+};
+
+static inline void xfree(const void *x) {
+  if (x)
+    FREE((void *)(intptr_t)x);
+}
+
+enum tokentype_t {
+  INVALID,
+  DOT,
+  COMMA,
+  EQUAL,
+  LBRACE,
+  RBRACE,
+  NEWLINE,
+  LBRACKET,
+  RBRACKET,
+  STRING,
+};
+typedef enum tokentype_t tokentype_t;
+
+typedef struct token_t token_t;
+struct token_t {
+  tokentype_t tok;
+  int lineno;
+  char *ptr; /* points into context->start */
+  int len;
+  int eof;
+};
+
+typedef struct context_t context_t;
+struct context_t {
+  char *start;
+  char *stop;
+  char *errbuf;
+  int errbufsz;
+
+  token_t tok;
+  toml_table_t *root;
+  toml_table_t *curtab;
+
+  struct {
+    int top;
+    char *key[10];
+    token_t tok[10];
+  } tpath;
+};
+
+#define STRINGIFY(x) #x
+#define TOSTRING(x) STRINGIFY(x)
+#define FLINE __FILE__ ":" TOSTRING(__LINE__)
+
+static int next_token(context_t *ctx, int dotisspecial);
+
+/*
+  Error reporting. Call when an error is detected. Always return -1.
+*/
+static int e_outofmemory(context_t *ctx, const char *fline) {
+  snprintf(ctx->errbuf, ctx->errbufsz, "ERROR: out of memory (%s)", fline);
+  return -1;
+}
+
+static int e_internal(context_t *ctx, const char *fline) {
+  snprintf(ctx->errbuf, ctx->errbufsz, "internal error (%s)", fline);
+  return -1;
+}
+
+static int e_syntax(context_t *ctx, int lineno, const char *msg) {
+  snprintf(ctx->errbuf, ctx->errbufsz, "line %d: %s", lineno, msg);
+  return -1;
+}
+
+static int e_badkey(context_t *ctx, int lineno) {
+  snprintf(ctx->errbuf, ctx->errbufsz, "line %d: bad key", lineno);
+  return -1;
+}
+
+static int e_keyexists(context_t *ctx, int lineno) {
+  snprintf(ctx->errbuf, ctx->errbufsz, "line %d: key exists", lineno);
+  return -1;
+}
+
+static int e_forbid(context_t *ctx, int lineno, const char *msg) {
+  snprintf(ctx->errbuf, ctx->errbufsz, "line %d: %s", lineno, msg);
+  return -1;
+}
+
+static void *expand(void *p, int sz, int newsz) {
+  void *s = MALLOC(newsz);
+  if (!s)
+    return 0;
+
+  memcpy(s, p, sz);
+  FREE(p);
+  return s;
+}
+
+static void **expand_ptrarr(void **p, int n) {
+  void **s = MALLOC((n + 1) * sizeof(void *));
+  if (!s)
+    return 0;
+
+  s[n] = 0;
+  memcpy(s, p, n * sizeof(void *));
+  FREE(p);
+  return s;
+}
+
+static toml_arritem_t *expand_arritem(toml_arritem_t *p, int n) {
+  toml_arritem_t *pp = expand(p, n * sizeof(*p), (n + 1) * sizeof(*p));
+  if (!pp)
+    return 0;
+
+  memset(&pp[n], 0, sizeof(pp[n]));
+  return pp;
+}
+
+static char *norm_lit_str(const char *src, int srclen, int multiline,
+                          char *errbuf, int errbufsz) {
+  char *dst = 0; /* will write to dst[] and return it */
+  int max = 0;   /* max size of dst[] */
+  int off = 0;   /* cur offset in dst[] */
+  const char *sp = src;
+  const char *sq = src + srclen;
+  int ch;
+
+  /* scan forward on src */
+  for (;;) {
+    if (off >= max - 10) { /* have some slack for misc stuff */
+      int newmax = max + 50;
+      char *x = expand(dst, max, newmax);
+      if (!x) {
+        xfree(dst);
+        snprintf(errbuf, errbufsz, "out of memory");
+        return 0;
+      }
+      dst = x;
+      max = newmax;
+    }
+
+    /* finished? */
+    if (sp >= sq)
+      break;
+
+    ch = *sp++;
+    /* control characters other than tab is not allowed */
+    if ((0 <= ch && ch <= 0x08) || (0x0a <= ch && ch <= 0x1f) || (ch == 0x7f)) {
+      if (!(multiline && (ch == '\r' || ch == '\n'))) {
+        xfree(dst);
+        snprintf(errbuf, errbufsz, "invalid char U+%04x", ch);
+        return 0;
+      }
+    }
+
+    // a plain copy suffice
+    dst[off++] = ch;
+  }
+
+  dst[off++] = 0;
+  return dst;
+}
+
+/*
+ * Convert src to raw unescaped utf-8 string.
+ * Returns NULL if error with errmsg in errbuf.
+ */
+static char *norm_basic_str(const char *src, int srclen, int multiline,
+                            char *errbuf, int errbufsz) {
+  char *dst = 0; /* will write to dst[] and return it */
+  int max = 0;   /* max size of dst[] */
+  int off = 0;   /* cur offset in dst[] */
+  const char *sp = src;
+  const char *sq = src + srclen;
+  int ch;
+
+  /* scan forward on src */
+  for (;;) {
+    if (off >= max - 10) { /* have some slack for misc stuff */
+      int newmax = max + 50;
+      char *x = expand(dst, max, newmax);
+      if (!x) {
+        xfree(dst);
+        snprintf(errbuf, errbufsz, "out of memory");
+        return 0;
+      }
+      dst = x;
+      max = newmax;
+    }
+
+    /* finished? */
+    if (sp >= sq)
+      break;
+
+    ch = *sp++;
+    if (ch != '\\') {
+      /* these chars must be escaped: U+0000 to U+0008, U+000A to U+001F, U+007F
+       */
+      if ((0 <= ch && ch <= 0x08) || (0x0a <= ch && ch <= 0x1f) ||
+          (ch == 0x7f)) {
+        if (!(multiline && (ch == '\r' || ch == '\n'))) {
+          xfree(dst);
+          snprintf(errbuf, errbufsz, "invalid char U+%04x", ch);
+          return 0;
+        }
+      }
+
+      // a plain copy suffice
+      dst[off++] = ch;
+      continue;
+    }
+
+    /* ch was backslash. we expect the escape char. */
+    if (sp >= sq) {
+      snprintf(errbuf, errbufsz, "last backslash is invalid");
+      xfree(dst);
+      return 0;
+    }
+
+    /* for multi-line, we want to kill line-ending-backslash ... */
+    if (multiline) {
+
+      // if there is only whitespace after the backslash ...
+      if (sp[strspn(sp, " \t\r")] == '\n') {
+        /* skip all the following whitespaces */
+        sp += strspn(sp, " \t\r\n");
+        continue;
+      }
+    }
+
+    /* get the escaped char */
+    ch = *sp++;
+    switch (ch) {
+    case 'u':
+    case 'U': {
+      int64_t ucs = 0;
+      int nhex = (ch == 'u' ? 4 : 8);
+      for (int i = 0; i < nhex; i++) {
+        if (sp >= sq) {
+          snprintf(errbuf, errbufsz, "\\%c expects %d hex chars", ch, nhex);
+          xfree(dst);
+          return 0;
+        }
+        ch = *sp++;
+        int v = ('0' <= ch && ch <= '9')
+                    ? ch - '0'
+                    : (('A' <= ch && ch <= 'F') ? ch - 'A' + 10 : -1);
+        if (-1 == v) {
+          snprintf(errbuf, errbufsz, "invalid hex chars for \\u or \\U");
+          xfree(dst);
+          return 0;
+        }
+        ucs = ucs * 16 + v;
+      }
+      int n = toml_ucs_to_utf8(ucs, &dst[off]);
+      if (-1 == n) {
+        snprintf(errbuf, errbufsz, "illegal ucs code in \\u or \\U");
+        xfree(dst);
+        return 0;
+      }
+      off += n;
+    }
+      continue;
+
+    case 'b':
+      ch = '\b';
+      break;
+    case 't':
+      ch = '\t';
+      break;
+    case 'n':
+      ch = '\n';
+      break;
+    case 'f':
+      ch = '\f';
+      break;
+    case 'r':
+      ch = '\r';
+      break;
+    case '"':
+      ch = '"';
+      break;
+    case '\\':
+      ch = '\\';
+      break;
+    default:
+      snprintf(errbuf, errbufsz, "illegal escape char \\%c", ch);
+      xfree(dst);
+      return 0;
+    }
+
+    dst[off++] = ch;
+  }
+
+  // Cap with NUL and return it.
+  dst[off++] = 0;
+  return dst;
+}
+
+/* Normalize a key. Convert all special chars to raw unescaped utf-8 chars. */
+static char *normalize_key(context_t *ctx, token_t strtok) {
+  const char *sp = strtok.ptr;
+  const char *sq = strtok.ptr + strtok.len;
+  int lineno = strtok.lineno;
+  char *ret;
+  int ch = *sp;
+  char ebuf[80];
+
+  /* handle quoted string */
+  if (ch == '\'' || ch == '\"') {
+    /* if ''' or """, take 3 chars off front and back. Else, take 1 char off. */
+    int multiline = 0;
+    if (sp[1] == ch && sp[2] == ch) {
+      sp += 3, sq -= 3;
+      multiline = 1;
+    } else
+      sp++, sq--;
+
+    if (ch == '\'') {
+      /* for single quote, take it verbatim. */
+      if (!(ret = STRNDUP(sp, sq - sp))) {
+        e_outofmemory(ctx, FLINE);
+        return 0;
+      }
+    } else {
+      /* for double quote, we need to normalize */
+      ret = norm_basic_str(sp, sq - sp, multiline, ebuf, sizeof(ebuf));
+      if (!ret) {
+        e_syntax(ctx, lineno, ebuf);
+        return 0;
+      }
+    }
+
+    /* newlines are not allowed in keys */
+    if (strchr(ret, '\n')) {
+      xfree(ret);
+      e_badkey(ctx, lineno);
+      return 0;
+    }
+    return ret;
+  }
+
+  /* for bare-key allow only this regex: [A-Za-z0-9_-]+ */
+  const char *xp;
+  for (xp = sp; xp != sq; xp++) {
+    int k = *xp;
+    if (isalnum(k))
+      continue;
+    if (k == '_' || k == '-')
+      continue;
+    e_badkey(ctx, lineno);
+    return 0;
+  }
+
+  /* dup and return it */
+  if (!(ret = STRNDUP(sp, sq - sp))) {
+    e_outofmemory(ctx, FLINE);
+    return 0;
+  }
+  return ret;
+}
+
+/*
+ * Look up key in tab. Return 0 if not found, or
+ * 'v'alue, 'a'rray or 't'able depending on the element.
+ */
+static int check_key(toml_table_t *tab, const char *key,
+                     toml_keyval_t **ret_val, toml_array_t **ret_arr,
+                     toml_table_t **ret_tab) {
+  int i;
+  void *dummy;
+
+  if (!ret_tab)
+    ret_tab = (toml_table_t **)&dummy;
+  if (!ret_arr)
+    ret_arr = (toml_array_t **)&dummy;
+  if (!ret_val)
+    ret_val = (toml_keyval_t **)&dummy;
+
+  *ret_tab = 0;
+  *ret_arr = 0;
+  *ret_val = 0;
+
+  for (i = 0; i < tab->nkval; i++) {
+    if (0 == strcmp(key, tab->kval[i]->key)) {
+      *ret_val = tab->kval[i];
+      return 'v';
+    }
+  }
+  for (i = 0; i < tab->narr; i++) {
+    if (0 == strcmp(key, tab->arr[i]->key)) {
+      *ret_arr = tab->arr[i];
+      return 'a';
+    }
+  }
+  for (i = 0; i < tab->ntab; i++) {
+    if (0 == strcmp(key, tab->tab[i]->key)) {
+      *ret_tab = tab->tab[i];
+      return 't';
+    }
+  }
+  return 0;
+}
+
+static int key_kind(toml_table_t *tab, const char *key) {
+  return check_key(tab, key, 0, 0, 0);
+}
+
+/* Create a keyval in the table.
+ */
+static toml_keyval_t *create_keyval_in_table(context_t *ctx, toml_table_t *tab,
+                                             token_t keytok) {
+  /* first, normalize the key to be used for lookup.
+   * remember to free it if we error out.
+   */
+  char *newkey = normalize_key(ctx, keytok);
+  if (!newkey)
+    return 0;
+
+  /* if key exists: error out. */
+  toml_keyval_t *dest = 0;
+  if (key_kind(tab, newkey)) {
+    xfree(newkey);
+    e_keyexists(ctx, keytok.lineno);
+    return 0;
+  }
+
+  /* make a new entry */
+  int n = tab->nkval;
+  toml_keyval_t **base;
+  if (0 == (base = (toml_keyval_t **)expand_ptrarr((void **)tab->kval, n))) {
+    xfree(newkey);
+    e_outofmemory(ctx, FLINE);
+    return 0;
+  }
+  tab->kval = base;
+
+  if (0 == (base[n] = (toml_keyval_t *)CALLOC(1, sizeof(*base[n])))) {
+    xfree(newkey);
+    e_outofmemory(ctx, FLINE);
+    return 0;
+  }
+  dest = tab->kval[tab->nkval++];
+
+  /* save the key in the new value struct */
+  dest->key = newkey;
+  return dest;
+}
+
+/* Create a table in the table.
+ */
+static toml_table_t *create_keytable_in_table(context_t *ctx, toml_table_t *tab,
+                                              token_t keytok) {
+  /* first, normalize the key to be used for lookup.
+   * remember to free it if we error out.
+   */
+  char *newkey = normalize_key(ctx, keytok);
+  if (!newkey)
+    return 0;
+
+  /* if key exists: error out */
+  toml_table_t *dest = 0;
+  if (check_key(tab, newkey, 0, 0, &dest)) {
+    xfree(newkey); /* don't need this anymore */
+
+    /* special case: if table exists, but was created implicitly ... */
+    if (dest && dest->implicit) {
+      /* we make it explicit now, and simply return it. */
+      dest->implicit = false;
+      return dest;
+    }
+    e_keyexists(ctx, keytok.lineno);
+    return 0;
+  }
+
+  /* create a new table entry */
+  int n = tab->ntab;
+  toml_table_t **base;
+  if (0 == (base = (toml_table_t **)expand_ptrarr((void **)tab->tab, n))) {
+    xfree(newkey);
+    e_outofmemory(ctx, FLINE);
+    return 0;
+  }
+  tab->tab = base;
+
+  if (0 == (base[n] = (toml_table_t *)CALLOC(1, sizeof(*base[n])))) {
+    xfree(newkey);
+    e_outofmemory(ctx, FLINE);
+    return 0;
+  }
+  dest = tab->tab[tab->ntab++];
+
+  /* save the key in the new table struct */
+  dest->key = newkey;
+  return dest;
+}
+
+/* Create an array in the table.
+ */
+static toml_array_t *create_keyarray_in_table(context_t *ctx, toml_table_t *tab,
+                                              token_t keytok, char kind) {
+  /* first, normalize the key to be used for lookup.
+   * remember to free it if we error out.
+   */
+  char *newkey = normalize_key(ctx, keytok);
+  if (!newkey)
+    return 0;
+
+  /* if key exists: error out */
+  if (key_kind(tab, newkey)) {
+    xfree(newkey); /* don't need this anymore */
+    e_keyexists(ctx, keytok.lineno);
+    return 0;
+  }
+
+  /* make a new array entry */
+  int n = tab->narr;
+  toml_array_t **base;
+  if (0 == (base = (toml_array_t **)expand_ptrarr((void **)tab->arr, n))) {
+    xfree(newkey);
+    e_outofmemory(ctx, FLINE);
+    return 0;
+  }
+  tab->arr = base;
+
+  if (0 == (base[n] = (toml_array_t *)CALLOC(1, sizeof(*base[n])))) {
+    xfree(newkey);
+    e_outofmemory(ctx, FLINE);
+    return 0;
+  }
+  toml_array_t *dest = tab->arr[tab->narr++];
+
+  /* save the key in the new array struct */
+  dest->key = newkey;
+  dest->kind = kind;
+  return dest;
+}
+
+static toml_arritem_t *create_value_in_array(context_t *ctx,
+                                             toml_array_t *parent) {
+  const int n = parent->nitem;
+  toml_arritem_t *base = expand_arritem(parent->item, n);
+  if (!base) {
+    e_outofmemory(ctx, FLINE);
+    return 0;
+  }
+  parent->item = base;
+  parent->nitem++;
+  return &parent->item[n];
+}
+
+/* Create an array in an array
+ */
+static toml_array_t *create_array_in_array(context_t *ctx,
+                                           toml_array_t *parent) {
+  const int n = parent->nitem;
+  toml_arritem_t *base = expand_arritem(parent->item, n);
+  if (!base) {
+    e_outofmemory(ctx, FLINE);
+    return 0;
+  }
+  toml_array_t *ret = (toml_array_t *)CALLOC(1, sizeof(toml_array_t));
+  if (!ret) {
+    e_outofmemory(ctx, FLINE);
+    return 0;
+  }
+  base[n].arr = ret;
+  parent->item = base;
+  parent->nitem++;
+  return ret;
+}
+
+/* Create a table in an array
+ */
+static toml_table_t *create_table_in_array(context_t *ctx,
+                                           toml_array_t *parent) {
+  int n = parent->nitem;
+  toml_arritem_t *base = expand_arritem(parent->item, n);
+  if (!base) {
+    e_outofmemory(ctx, FLINE);
+    return 0;
+  }
+  toml_table_t *ret = (toml_table_t *)CALLOC(1, sizeof(toml_table_t));
+  if (!ret) {
+    e_outofmemory(ctx, FLINE);
+    return 0;
+  }
+  base[n].tab = ret;
+  parent->item = base;
+  parent->nitem++;
+  return ret;
+}
+
+static int skip_newlines(context_t *ctx, int isdotspecial) {
+  while (ctx->tok.tok == NEWLINE) {
+    if (next_token(ctx, isdotspecial))
+      return -1;
+    if (ctx->tok.eof)
+      break;
+  }
+  return 0;
+}
+
+static int parse_keyval(context_t *ctx, toml_table_t *tab);
+
+static inline int eat_token(context_t *ctx, tokentype_t typ, int isdotspecial,
+                            const char *fline) {
+  if (ctx->tok.tok != typ)
+    return e_internal(ctx, fline);
+
+  if (next_token(ctx, isdotspecial))
+    return -1;
+
+  return 0;
+}
+
+/* We are at '{ ... }'.
+ * Parse the table.
+ */
+static int parse_inline_table(context_t *ctx, toml_table_t *tab) {
+  if (eat_token(ctx, LBRACE, 1, FLINE))
+    return -1;
+
+  for (;;) {
+    if (ctx->tok.tok == NEWLINE)
+      return e_syntax(ctx, ctx->tok.lineno,
+                      "newline not allowed in inline table");
+
+    /* until } */
+    if (ctx->tok.tok == RBRACE)
+      break;
+
+    if (ctx->tok.tok != STRING)
+      return e_syntax(ctx, ctx->tok.lineno, "expect a string");
+
+    if (parse_keyval(ctx, tab))
+      return -1;
+
+    if (ctx->tok.tok == NEWLINE)
+      return e_syntax(ctx, ctx->tok.lineno,
+                      "newline not allowed in inline table");
+
+    /* on comma, continue to scan for next keyval */
+    if (ctx->tok.tok == COMMA) {
+      if (eat_token(ctx, COMMA, 1, FLINE))
+        return -1;
+      continue;
+    }
+    break;
+  }
+
+  if (eat_token(ctx, RBRACE, 1, FLINE))
+    return -1;
+
+  tab->readonly = 1;
+
+  return 0;
+}
+
+static int valtype(const char *val) {
+  toml_timestamp_t ts;
+  if (*val == '\'' || *val == '"')
+    return 's';
+  if (0 == toml_rtob(val, 0))
+    return 'b';
+  if (0 == toml_rtoi(val, 0))
+    return 'i';
+  if (0 == toml_rtod(val, 0))
+    return 'd';
+  if (0 == toml_rtots(val, &ts)) {
+    if (ts.year && ts.hour)
+      return 'T'; /* timestamp */
+    if (ts.year)
+      return 'D'; /* date */
+    return 't';   /* time */
+  }
+  return 'u'; /* unknown */
+}
+
+/* We are at '[...]' */
+static int parse_array(context_t *ctx, toml_array_t *arr) {
+  if (eat_token(ctx, LBRACKET, 0, FLINE))
+    return -1;
+
+  for (;;) {
+    if (skip_newlines(ctx, 0))
+      return -1;
+
+    /* until ] */
+    if (ctx->tok.tok == RBRACKET)
+      break;
+
+    switch (ctx->tok.tok) {
+    case STRING: {
+      /* set array kind if this will be the first entry */
+      if (arr->kind == 0)
+        arr->kind = 'v';
+      else if (arr->kind != 'v')
+        arr->kind = 'm';
+
+      char *val = ctx->tok.ptr;
+      int vlen = ctx->tok.len;
+
+      /* make a new value in array */
+      toml_arritem_t *newval = create_value_in_array(ctx, arr);
+      if (!newval)
+        return e_outofmemory(ctx, FLINE);
+
+      if (!(newval->val = STRNDUP(val, vlen)))
+        return e_outofmemory(ctx, FLINE);
+
+      newval->valtype = valtype(newval->val);
+
+      /* set array type if this is the first entry */
+      if (arr->nitem == 1)
+        arr->type = newval->valtype;
+      else if (arr->type != newval->valtype)
+        arr->type = 'm'; /* mixed */
+
+      if (eat_token(ctx, STRING, 0, FLINE))
+        return -1;
+      break;
+    }
+
+    case LBRACKET: { /* [ [array], [array] ... ] */
+      /* set the array kind if this will be the first entry */
+      if (arr->kind == 0)
+        arr->kind = 'a';
+      else if (arr->kind != 'a')
+        arr->kind = 'm';
+
+      toml_array_t *subarr = create_array_in_array(ctx, arr);
+      if (!subarr)
+        return -1;
+      if (parse_array(ctx, subarr))
+        return -1;
+      break;
+    }
+
+    case LBRACE: { /* [ {table}, {table} ... ] */
+      /* set the array kind if this will be the first entry */
+      if (arr->kind == 0)
+        arr->kind = 't';
+      else if (arr->kind != 't')
+        arr->kind = 'm';
+
+      toml_table_t *subtab = create_table_in_array(ctx, arr);
+      if (!subtab)
+        return -1;
+      if (parse_inline_table(ctx, subtab))
+        return -1;
+      break;
+    }
+
+    default:
+      return e_syntax(ctx, ctx->tok.lineno, "syntax error");
+    }
+
+    if (skip_newlines(ctx, 0))
+      return -1;
+
+    /* on comma, continue to scan for next element */
+    if (ctx->tok.tok == COMMA) {
+      if (eat_token(ctx, COMMA, 0, FLINE))
+        return -1;
+      continue;
+    }
+    break;
+  }
+
+  if (eat_token(ctx, RBRACKET, 1, FLINE))
+    return -1;
+  return 0;
+}
+
+/* handle lines like these:
+   key = "value"
+   key = [ array ]
+   key = { table }
+*/
+static int parse_keyval(context_t *ctx, toml_table_t *tab) {
+  if (tab->readonly) {
+    return e_forbid(ctx, ctx->tok.lineno,
+                    "cannot insert new entry into existing table");
+  }
+
+  token_t key = ctx->tok;
+  if (eat_token(ctx, STRING, 1, FLINE))
+    return -1;
+
+  if (ctx->tok.tok == DOT) {
+    /* handle inline dotted key.
+       e.g.
+       physical.color = "orange"
+       physical.shape = "round"
+    */
+    toml_table_t *subtab = 0;
+    {
+      char *subtabstr = normalize_key(ctx, key);
+      if (!subtabstr)
+        return -1;
+
+      subtab = toml_table_in(tab, subtabstr);
+      xfree(subtabstr);
+    }
+    if (!subtab) {
+      subtab = create_keytable_in_table(ctx, tab, key);
+      if (!subtab)
+        return -1;
+    }
+    if (next_token(ctx, 1))
+      return -1;
+    if (parse_keyval(ctx, subtab))
+      return -1;
+    return 0;
+  }
+
+  if (ctx->tok.tok != EQUAL) {
+    return e_syntax(ctx, ctx->tok.lineno, "missing =");
+  }
+
+  if (next_token(ctx, 0))
+    return -1;
+
+  switch (ctx->tok.tok) {
+  case STRING: { /* key = "value" */
+    toml_keyval_t *keyval = create_keyval_in_table(ctx, tab, key);
+    if (!keyval)
+      return -1;
+    token_t val = ctx->tok;
+
+    assert(keyval->val == 0);
+    if (!(keyval->val = STRNDUP(val.ptr, val.len)))
+      return e_outofmemory(ctx, FLINE);
+
+    if (next_token(ctx, 1))
+      return -1;
+
+    return 0;
+  }
+
+  case LBRACKET: { /* key = [ array ] */
+    toml_array_t *arr = create_keyarray_in_table(ctx, tab, key, 0);
+    if (!arr)
+      return -1;
+    if (parse_array(ctx, arr))
+      return -1;
+    return 0;
+  }
+
+  case LBRACE: { /* key = { table } */
+    toml_table_t *nxttab = create_keytable_in_table(ctx, tab, key);
+    if (!nxttab)
+      return -1;
+    if (parse_inline_table(ctx, nxttab))
+      return -1;
+    return 0;
+  }
+
+  default:
+    return e_syntax(ctx, ctx->tok.lineno, "syntax error");
+  }
+  return 0;
+}
+
+typedef struct tabpath_t tabpath_t;
+struct tabpath_t {
+  int cnt;
+  token_t key[10];
+};
+
+/* at [x.y.z] or [[x.y.z]]
+ * Scan forward and fill tabpath until it enters ] or ]]
+ * There will be at least one entry on return.
+ */
+static int fill_tabpath(context_t *ctx) {
+  int lineno = ctx->tok.lineno;
+  int i;
+
+  /* clear tpath */
+  for (i = 0; i < ctx->tpath.top; i++) {
+    char **p = &ctx->tpath.key[i];
+    xfree(*p);
+    *p = 0;
+  }
+  ctx->tpath.top = 0;
+
+  for (;;) {
+    if (ctx->tpath.top >= 10)
+      return e_syntax(ctx, lineno,
+                      "table path is too deep; max allowed is 10.");
+
+    if (ctx->tok.tok != STRING)
+      return e_syntax(ctx, lineno, "invalid or missing key");
+
+    char *key = normalize_key(ctx, ctx->tok);
+    if (!key)
+      return -1;
+    ctx->tpath.tok[ctx->tpath.top] = ctx->tok;
+    ctx->tpath.key[ctx->tpath.top] = key;
+    ctx->tpath.top++;
+
+    if (next_token(ctx, 1))
+      return -1;
+
+    if (ctx->tok.tok == RBRACKET)
+      break;
+
+    if (ctx->tok.tok != DOT)
+      return e_syntax(ctx, lineno, "invalid key");
+
+    if (next_token(ctx, 1))
+      return -1;
+  }
+
+  if (ctx->tpath.top <= 0)
+    return e_syntax(ctx, lineno, "empty table selector");
+
+  return 0;
+}
+
+/* Walk tabpath from the root, and create new tables on the way.
+ * Sets ctx->curtab to the final table.
+ */
+static int walk_tabpath(context_t *ctx) {
+  /* start from root */
+  toml_table_t *curtab = ctx->root;
+
+  for (int i = 0; i < ctx->tpath.top; i++) {
+    const char *key = ctx->tpath.key[i];
+
+    toml_keyval_t *nextval = 0;
+    toml_array_t *nextarr = 0;
+    toml_table_t *nexttab = 0;
+    switch (check_key(curtab, key, &nextval, &nextarr, &nexttab)) {
+    case 't':
+      /* found a table. nexttab is where we will go next. */
+      break;
+
+    case 'a':
+      /* found an array. nexttab is the last table in the array. */
+      if (nextarr->kind != 't')
+        return e_internal(ctx, FLINE);
+
+      if (nextarr->nitem == 0)
+        return e_internal(ctx, FLINE);
+
+      nexttab = nextarr->item[nextarr->nitem - 1].tab;
+      break;
+
+    case 'v':
+      return e_keyexists(ctx, ctx->tpath.tok[i].lineno);
+
+    default: { /* Not found. Let's create an implicit table. */
+      int n = curtab->ntab;
+      toml_table_t **base =
+          (toml_table_t **)expand_ptrarr((void **)curtab->tab, n);
+      if (0 == base)
+        return e_outofmemory(ctx, FLINE);
+
+      curtab->tab = base;
+
+      if (0 == (base[n] = (toml_table_t *)CALLOC(1, sizeof(*base[n]))))
+        return e_outofmemory(ctx, FLINE);
+
+      if (0 == (base[n]->key = STRDUP(key)))
+        return e_outofmemory(ctx, FLINE);
+
+      nexttab = curtab->tab[curtab->ntab++];
+
+      /* tabs created by walk_tabpath are considered implicit */
+      nexttab->implicit = true;
+    } break;
+    }
+
+    /* switch to next tab */
+    curtab = nexttab;
+  }
+
+  /* save it */
+  ctx->curtab = curtab;
+
+  return 0;
+}
+
+/* handle lines like [x.y.z] or [[x.y.z]] */
+static int parse_select(context_t *ctx) {
+  assert(ctx->tok.tok == LBRACKET);
+
+  /* true if [[ */
+  int llb = (ctx->tok.ptr + 1 < ctx->stop && ctx->tok.ptr[1] == '[');
+  /* need to detect '[[' on our own because next_token() will skip whitespace,
+     and '[ [' would be taken as '[[', which is wrong. */
+
+  /* eat [ or [[ */
+  if (eat_token(ctx, LBRACKET, 1, FLINE))
+    return -1;
+  if (llb) {
+    assert(ctx->tok.tok == LBRACKET);
+    if (eat_token(ctx, LBRACKET, 1, FLINE))
+      return -1;
+  }
+
+  if (fill_tabpath(ctx))
+    return -1;
+
+  /* For [x.y.z] or [[x.y.z]], remove z from tpath.
+   */
+  token_t z = ctx->tpath.tok[ctx->tpath.top - 1];
+  xfree(ctx->tpath.key[ctx->tpath.top - 1]);
+  ctx->tpath.top--;
+
+  /* set up ctx->curtab */
+  if (walk_tabpath(ctx))
+    return -1;
+
+  if (!llb) {
+    /* [x.y.z] -> create z = {} in x.y */
+    toml_table_t *curtab = create_keytable_in_table(ctx, ctx->curtab, z);
+    if (!curtab)
+      return -1;
+    ctx->curtab = curtab;
+  } else {
+    /* [[x.y.z]] -> create z = [] in x.y */
+    toml_array_t *arr = 0;
+    {
+      char *zstr = normalize_key(ctx, z);
+      if (!zstr)
+        return -1;
+      arr = toml_array_in(ctx->curtab, zstr);
+      xfree(zstr);
+    }
+    if (!arr) {
+      arr = create_keyarray_in_table(ctx, ctx->curtab, z, 't');
+      if (!arr)
+        return -1;
+    }
+    if (arr->kind != 't')
+      return e_syntax(ctx, z.lineno, "array mismatch");
+
+    /* add to z[] */
+    toml_table_t *dest;
+    {
+      toml_table_t *t = create_table_in_array(ctx, arr);
+      if (!t)
+        return -1;
+
+      if (0 == (t->key = STRDUP("__anon__")))
+        return e_outofmemory(ctx, FLINE);
+
+      dest = t;
+    }
+
+    ctx->curtab = dest;
+  }
+
+  if (ctx->tok.tok != RBRACKET) {
+    return e_syntax(ctx, ctx->tok.lineno, "expects ]");
+  }
+  if (llb) {
+    if (!(ctx->tok.ptr + 1 < ctx->stop && ctx->tok.ptr[1] == ']')) {
+      return e_syntax(ctx, ctx->tok.lineno, "expects ]]");
+    }
+    if (eat_token(ctx, RBRACKET, 1, FLINE))
+      return -1;
+  }
+
+  if (eat_token(ctx, RBRACKET, 1, FLINE))
+    return -1;
+
+  if (ctx->tok.tok != NEWLINE)
+    return e_syntax(ctx, ctx->tok.lineno, "extra chars after ] or ]]");
+
+  return 0;
+}
+
+toml_table_t *toml_parse(char *conf, char *errbuf, int errbufsz) {
+  context_t ctx;
+
+  // clear errbuf
+  if (errbufsz <= 0)
+    errbufsz = 0;
+  if (errbufsz > 0)
+    errbuf[0] = 0;
+
+  // init context
+  memset(&ctx, 0, sizeof(ctx));
+  ctx.start = conf;
+  ctx.stop = ctx.start + strlen(conf);
+  ctx.errbuf = errbuf;
+  ctx.errbufsz = errbufsz;
+
+  // start with an artificial newline of length 0
+  ctx.tok.tok = NEWLINE;
+  ctx.tok.lineno = 1;
+  ctx.tok.ptr = conf;
+  ctx.tok.len = 0;
+
+  // make a root table
+  if (0 == (ctx.root = CALLOC(1, sizeof(*ctx.root)))) {
+    e_outofmemory(&ctx, FLINE);
+    // Do not goto fail, root table not set up yet
+    return 0;
+  }
+
+  // set root as default table
+  ctx.curtab = ctx.root;
+
+  /* Scan forward until EOF */
+  for (token_t tok = ctx.tok; !tok.eof; tok = ctx.tok) {
+    switch (tok.tok) {
+
+    case NEWLINE:
+      if (next_token(&ctx, 1))
+        goto fail;
+      break;
+
+    case STRING:
+      if (parse_keyval(&ctx, ctx.curtab))
+        goto fail;
+
+      if (ctx.tok.tok != NEWLINE) {
+        e_syntax(&ctx, ctx.tok.lineno, "extra chars after value");
+        goto fail;
+      }
+
+      if (eat_token(&ctx, NEWLINE, 1, FLINE))
+        goto fail;
+      break;
+
+    case LBRACKET: /* [ x.y.z ] or [[ x.y.z ]] */
+      if (parse_select(&ctx))
+        goto fail;
+      break;
+
+    default:
+      e_syntax(&ctx, tok.lineno, "syntax error");
+      goto fail;
+    }
+  }
+
+  /* success */
+  for (int i = 0; i < ctx.tpath.top; i++)
+    xfree(ctx.tpath.key[i]);
+  return ctx.root;
+
+fail:
+  // Something bad has happened. Free resources and return error.
+  for (int i = 0; i < ctx.tpath.top; i++)
+    xfree(ctx.tpath.key[i]);
+  toml_free(ctx.root);
+  return 0;
+}
+
+toml_table_t *toml_parse_file(FILE *fp, char *errbuf, int errbufsz) {
+  int bufsz = 0;
+  char *buf = 0;
+  int off = 0;
+
+  /* read from fp into buf */
+  while (!feof(fp)) {
+
+    if (off == bufsz) {
+      int xsz = bufsz + 1000;
+      char *x = expand(buf, bufsz, xsz);
+      if (!x) {
+        snprintf(errbuf, errbufsz, "out of memory");
+        xfree(buf);
+        return 0;
+      }
+      buf = x;
+      bufsz = xsz;
+    }
+
+    errno = 0;
+    int n = fread(buf + off, 1, bufsz - off, fp);
+    if (ferror(fp)) {
+      snprintf(errbuf, errbufsz, "%s",
+               errno ? strerror(errno) : "Error reading file");
+      xfree(buf);
+      return 0;
+    }
+    off += n;
+  }
+
+  /* tag on a NUL to cap the string */
+  if (off == bufsz) {
+    int xsz = bufsz + 1;
+    char *x = expand(buf, bufsz, xsz);
+    if (!x) {
+      snprintf(errbuf, errbufsz, "out of memory");
+      xfree(buf);
+      return 0;
+    }
+    buf = x;
+    bufsz = xsz;
+  }
+  buf[off] = 0;
+
+  /* parse it, cleanup and finish */
+  toml_table_t *ret = toml_parse(buf, errbuf, errbufsz);
+  xfree(buf);
+  return ret;
+}
+
+static void xfree_kval(toml_keyval_t *p) {
+  if (!p)
+    return;
+  xfree(p->key);
+  xfree(p->val);
+  xfree(p);
+}
+
+static void xfree_tab(toml_table_t *p);
+
+static void xfree_arr(toml_array_t *p) {
+  if (!p)
+    return;
+
+  xfree(p->key);
+  const int n = p->nitem;
+  for (int i = 0; i < n; i++) {
+    toml_arritem_t *a = &p->item[i];
+    if (a->val)
+      xfree(a->val);
+    else if (a->arr)
+      xfree_arr(a->arr);
+    else if (a->tab)
+      xfree_tab(a->tab);
+  }
+  xfree(p->item);
+  xfree(p);
+}
+
+static void xfree_tab(toml_table_t *p) {
+  int i;
+
+  if (!p)
+    return;
+
+  xfree(p->key);
+
+  for (i = 0; i < p->nkval; i++)
+    xfree_kval(p->kval[i]);
+  xfree(p->kval);
+
+  for (i = 0; i < p->narr; i++)
+    xfree_arr(p->arr[i]);
+  xfree(p->arr);
+
+  for (i = 0; i < p->ntab; i++)
+    xfree_tab(p->tab[i]);
+  xfree(p->tab);
+
+  xfree(p);
+}
+
+void toml_free(toml_table_t *tab) { xfree_tab(tab); }
+
+static void set_token(context_t *ctx, tokentype_t tok, int lineno, char *ptr,
+                      int len) {
+  token_t t;
+  t.tok = tok;
+  t.lineno = lineno;
+  t.ptr = ptr;
+  t.len = len;
+  t.eof = 0;
+  ctx->tok = t;
+}
+
+static void set_eof(context_t *ctx, int lineno) {
+  set_token(ctx, NEWLINE, lineno, ctx->stop, 0);
+  ctx->tok.eof = 1;
+}
+
+/* Scan p for n digits compositing entirely of [0-9] */
+static int scan_digits(const char *p, int n) {
+  int ret = 0;
+  for (; n > 0 && isdigit(*p); n--, p++) {
+    ret = 10 * ret + (*p - '0');
+  }
+  return n ? -1 : ret;
+}
+
+static int scan_date(const char *p, int *YY, int *MM, int *DD) {
+  int year, month, day;
+  year = scan_digits(p, 4);
+  month = (year >= 0 && p[4] == '-') ? scan_digits(p + 5, 2) : -1;
+  day = (month >= 0 && p[7] == '-') ? scan_digits(p + 8, 2) : -1;
+  if (YY)
+    *YY = year;
+  if (MM)
+    *MM = month;
+  if (DD)
+    *DD = day;
+  return (year >= 0 && month >= 0 && day >= 0) ? 0 : -1;
+}
+
+static int scan_time(const char *p, int *hh, int *mm, int *ss) {
+  int hour, minute, second;
+  hour = scan_digits(p, 2);
+  minute = (hour >= 0 && p[2] == ':') ? scan_digits(p + 3, 2) : -1;
+  second = (minute >= 0 && p[5] == ':') ? scan_digits(p + 6, 2) : -1;
+  if (hh)
+    *hh = hour;
+  if (mm)
+    *mm = minute;
+  if (ss)
+    *ss = second;
+  return (hour >= 0 && minute >= 0 && second >= 0) ? 0 : -1;
+}
+
+static int scan_string(context_t *ctx, char *p, int lineno, int dotisspecial) {
+  char *orig = p;
+  if (0 == strncmp(p, "'''", 3)) {
+    char *q = p + 3;
+
+    while (1) {
+      q = strstr(q, "'''");
+      if (0 == q) {
+        return e_syntax(ctx, lineno, "unterminated triple-s-quote");
+      }
+      while (q[3] == '\'')
+        q++;
+      break;
+    }
+
+    set_token(ctx, STRING, lineno, orig, q + 3 - orig);
+    return 0;
+  }
+
+  if (0 == strncmp(p, "\"\"\"", 3)) {
+    char *q = p + 3;
+
+    while (1) {
+      q = strstr(q, "\"\"\"");
+      if (0 == q) {
+        return e_syntax(ctx, lineno, "unterminated triple-d-quote");
+      }
+      if (q[-1] == '\\') {
+        q++;
+        continue;
+      }
+      while (q[3] == '\"')
+        q++;
+      break;
+    }
+
+    // the string is [p+3, q-1]
+
+    int hexreq = 0; /* #hex required */
+    int escape = 0;
+    for (p += 3; p < q; p++) {
+      if (escape) {
+        escape = 0;
+        if (strchr("btnfr\"\\", *p))
+          continue;
+        if (*p == 'u') {
+          hexreq = 4;
+          continue;
+        }
+        if (*p == 'U') {
+          hexreq = 8;
+          continue;
+        }
+        if (p[strspn(p, " \t\r")] == '\n')
+          continue; /* allow for line ending backslash */
+        return e_syntax(ctx, lineno, "bad escape char");
+      }
+      if (hexreq) {
+        hexreq--;
+        if (strchr("0123456789ABCDEF", *p))
+          continue;
+        return e_syntax(ctx, lineno, "expect hex char");
+      }
+      if (*p == '\\') {
+        escape = 1;
+        continue;
+      }
+    }
+    if (escape)
+      return e_syntax(ctx, lineno, "expect an escape char");
+    if (hexreq)
+      return e_syntax(ctx, lineno, "expected more hex char");
+
+    set_token(ctx, STRING, lineno, orig, q + 3 - orig);
+    return 0;
+  }
+
+  if ('\'' == *p) {
+    for (p++; *p && *p != '\n' && *p != '\''; p++)
+      ;
+    if (*p != '\'') {
+      return e_syntax(ctx, lineno, "unterminated s-quote");
+    }
+
+    set_token(ctx, STRING, lineno, orig, p + 1 - orig);
+    return 0;
+  }
+
+  if ('\"' == *p) {
+    int hexreq = 0; /* #hex required */
+    int escape = 0;
+    for (p++; *p; p++) {
+      if (escape) {
+        escape = 0;
+        if (strchr("btnfr\"\\", *p))
+          continue;
+        if (*p == 'u') {
+          hexreq = 4;
+          continue;
+        }
+        if (*p == 'U') {
+          hexreq = 8;
+          continue;
+        }
+        return e_syntax(ctx, lineno, "bad escape char");
+      }
+      if (hexreq) {
+        hexreq--;
+        if (strchr("0123456789ABCDEF", *p))
+          continue;
+        return e_syntax(ctx, lineno, "expect hex char");
+      }
+      if (*p == '\\') {
+        escape = 1;
+        continue;
+      }
+      if (*p == '\'') {
+        if (p[1] == '\'' && p[2] == '\'') {
+          return e_syntax(ctx, lineno, "triple-s-quote inside string lit");
+        }
+        continue;
+      }
+      if (*p == '\n')
+        break;
+      if (*p == '"')
+        break;
+    }
+    if (*p != '"') {
+      return e_syntax(ctx, lineno, "unterminated quote");
+    }
+
+    set_token(ctx, STRING, lineno, orig, p + 1 - orig);
+    return 0;
+  }
+
+  /* check for timestamp without quotes */
+  if (0 == scan_date(p, 0, 0, 0) || 0 == scan_time(p, 0, 0, 0)) {
+    // forward thru the timestamp
+    p += strspn(p, "0123456789.:+-T Z");
+    // squeeze out any spaces at end of string
+    for (; p[-1] == ' '; p--)
+      ;
+    // tokenize
+    set_token(ctx, STRING, lineno, orig, p - orig);
+    return 0;
+  }
+
+  /* literals */
+  for (; *p && *p != '\n'; p++) {
+    int ch = *p;
+    if (ch == '.' && dotisspecial)
+      break;
+    if ('A' <= ch && ch <= 'Z')
+      continue;
+    if ('a' <= ch && ch <= 'z')
+      continue;
+    if (strchr("0123456789+-_.", ch))
+      continue;
+    break;
+  }
+
+  set_token(ctx, STRING, lineno, orig, p - orig);
+  return 0;
+}
+
+static int next_token(context_t *ctx, int dotisspecial) {
+  int lineno = ctx->tok.lineno;
+  char *p = ctx->tok.ptr;
+  int i;
+
+  /* eat this tok */
+  for (i = 0; i < ctx->tok.len; i++) {
+    if (*p++ == '\n')
+      lineno++;
+  }
+
+  /* make next tok */
+  while (p < ctx->stop) {
+    /* skip comment. stop just before the \n. */
+    if (*p == '#') {
+      for (p++; p < ctx->stop && *p != '\n'; p++)
+        ;
+      continue;
+    }
+
+    if (dotisspecial && *p == '.') {
+      set_token(ctx, DOT, lineno, p, 1);
+      return 0;
+    }
+
+    switch (*p) {
+    case ',':
+      set_token(ctx, COMMA, lineno, p, 1);
+      return 0;
+    case '=':
+      set_token(ctx, EQUAL, lineno, p, 1);
+      return 0;
+    case '{':
+      set_token(ctx, LBRACE, lineno, p, 1);
+      return 0;
+    case '}':
+      set_token(ctx, RBRACE, lineno, p, 1);
+      return 0;
+    case '[':
+      set_token(ctx, LBRACKET, lineno, p, 1);
+      return 0;
+    case ']':
+      set_token(ctx, RBRACKET, lineno, p, 1);
+      return 0;
+    case '\n':
+      set_token(ctx, NEWLINE, lineno, p, 1);
+      return 0;
+    case '\r':
+    case ' ':
+    case '\t':
+      /* ignore white spaces */
+      p++;
+      continue;
+    }
+
+    return scan_string(ctx, p, lineno, dotisspecial);
+  }
+
+  set_eof(ctx, lineno);
+  return 0;
+}
+
+const char *toml_key_in(const toml_table_t *tab, int keyidx) {
+  if (keyidx < tab->nkval)
+    return tab->kval[keyidx]->key;
+
+  keyidx -= tab->nkval;
+  if (keyidx < tab->narr)
+    return tab->arr[keyidx]->key;
+
+  keyidx -= tab->narr;
+  if (keyidx < tab->ntab)
+    return tab->tab[keyidx]->key;
+
+  return 0;
+}
+
+int toml_key_exists(const toml_table_t *tab, const char *key) {
+  int i;
+  for (i = 0; i < tab->nkval; i++) {
+    if (0 == strcmp(key, tab->kval[i]->key))
+      return 1;
+  }
+  for (i = 0; i < tab->narr; i++) {
+    if (0 == strcmp(key, tab->arr[i]->key))
+      return 1;
+  }
+  for (i = 0; i < tab->ntab; i++) {
+    if (0 == strcmp(key, tab->tab[i]->key))
+      return 1;
+  }
+  return 0;
+}
+
+toml_raw_t toml_raw_in(const toml_table_t *tab, const char *key) {
+  int i;
+  for (i = 0; i < tab->nkval; i++) {
+    if (0 == strcmp(key, tab->kval[i]->key))
+      return tab->kval[i]->val;
+  }
+  return 0;
+}
+
+toml_array_t *toml_array_in(const toml_table_t *tab, const char *key) {
+  int i;
+  for (i = 0; i < tab->narr; i++) {
+    if (0 == strcmp(key, tab->arr[i]->key))
+      return tab->arr[i];
+  }
+  return 0;
+}
+
+toml_table_t *toml_table_in(const toml_table_t *tab, const char *key) {
+  int i;
+  for (i = 0; i < tab->ntab; i++) {
+    if (0 == strcmp(key, tab->tab[i]->key))
+      return tab->tab[i];
+  }
+  return 0;
+}
+
+toml_raw_t toml_raw_at(const toml_array_t *arr, int idx) {
+  return (0 <= idx && idx < arr->nitem) ? arr->item[idx].val : 0;
+}
+
+char toml_array_kind(const toml_array_t *arr) { return arr->kind; }
+
+char toml_array_type(const toml_array_t *arr) {
+  if (arr->kind != 'v')
+    return 0;
+
+  if (arr->nitem == 0)
+    return 0;
+
+  return arr->type;
+}
+
+int toml_array_nelem(const toml_array_t *arr) { return arr->nitem; }
+
+const char *toml_array_key(const toml_array_t *arr) {
+  return arr ? arr->key : (const char *)NULL;
+}
+
+int toml_table_nkval(const toml_table_t *tab) { return tab->nkval; }
+
+int toml_table_narr(const toml_table_t *tab) { return tab->narr; }
+
+int toml_table_ntab(const toml_table_t *tab) { return tab->ntab; }
+
+const char *toml_table_key(const toml_table_t *tab) {
+  return tab ? tab->key : (const char *)NULL;
+}
+
+toml_array_t *toml_array_at(const toml_array_t *arr, int idx) {
+  return (0 <= idx && idx < arr->nitem) ? arr->item[idx].arr : 0;
+}
+
+toml_table_t *toml_table_at(const toml_array_t *arr, int idx) {
+  return (0 <= idx && idx < arr->nitem) ? arr->item[idx].tab : 0;
+}
+
+static int parse_millisec(const char *p, const char **endp);
+
+int toml_rtots(toml_raw_t src_, toml_timestamp_t *ret) {
+  if (!src_)
+    return -1;
+
+  const char *p = src_;
+  int must_parse_time = 0;
+
+  memset(ret, 0, sizeof(*ret));
+
+  int *year = &ret->__buffer.year;
+  int *month = &ret->__buffer.month;
+  int *day = &ret->__buffer.day;
+  int *hour = &ret->__buffer.hour;
+  int *minute = &ret->__buffer.minute;
+  int *second = &ret->__buffer.second;
+  int *millisec = &ret->__buffer.millisec;
+
+  /* parse date YYYY-MM-DD */
+  if (0 == scan_date(p, year, month, day)) {
+    ret->year = year;
+    ret->month = month;
+    ret->day = day;
+
+    p += 10;
+    if (*p) {
+      // parse the T or space separator
+      if (*p != 'T' && *p != ' ')
+        return -1;
+      must_parse_time = 1;
+      p++;
+    }
+  }
+
+  /* parse time HH:MM:SS */
+  if (0 == scan_time(p, hour, minute, second)) {
+    ret->hour = hour;
+    ret->minute = minute;
+    ret->second = second;
+
+    /* optionally, parse millisec */
+    p += 8;
+    if (*p == '.') {
+      p++; /* skip '.' */
+      const char *qq;
+      *millisec = parse_millisec(p, &qq);
+      ret->millisec = millisec;
+      p = qq;
+    }
+
+    if (*p) {
+      /* parse and copy Z */
+      char *z = ret->__buffer.z;
+      ret->z = z;
+      if (*p == 'Z' || *p == 'z') {
+        *z++ = 'Z';
+        p++;
+        *z = 0;
+
+      } else if (*p == '+' || *p == '-') {
+        *z++ = *p++;
+
+        if (!(isdigit(p[0]) && isdigit(p[1])))
+          return -1;
+        *z++ = *p++;
+        *z++ = *p++;
+
+        if (*p == ':') {
+          *z++ = *p++;
+
+          if (!(isdigit(p[0]) && isdigit(p[1])))
+            return -1;
+          *z++ = *p++;
+          *z++ = *p++;
+        }
+
+        *z = 0;
+      }
+    }
+  }
+  if (*p != 0)
+    return -1;
+
+  if (must_parse_time && !ret->hour)
+    return -1;
+
+  return 0;
+}
+
+/* Raw to boolean */
+int toml_rtob(toml_raw_t src, int *ret_) {
+  if (!src)
+    return -1;
+  int dummy;
+  int *ret = ret_ ? ret_ : &dummy;
+
+  if (0 == strcmp(src, "true")) {
+    *ret = 1;
+    return 0;
+  }
+  if (0 == strcmp(src, "false")) {
+    *ret = 0;
+    return 0;
+  }
+  return -1;
+}
+
+/* Raw to integer */
+int toml_rtoi(toml_raw_t src, int64_t *ret_) {
+  if (!src)
+    return -1;
+
+  char buf[100];
+  char *p = buf;
+  char *q = p + sizeof(buf);
+  const char *s = src;
+  int base = 0;
+  int64_t dummy;
+  int64_t *ret = ret_ ? ret_ : &dummy;
+
+  /* allow +/- */
+  if (s[0] == '+' || s[0] == '-')
+    *p++ = *s++;
+
+  /* disallow +_100 */
+  if (s[0] == '_')
+    return -1;
+
+  /* if 0* ... */
+  if ('0' == s[0]) {
+    switch (s[1]) {
+    case 'x':
+      base = 16;
+      s += 2;
+      break;
+    case 'o':
+      base = 8;
+      s += 2;
+      break;
+    case 'b':
+      base = 2;
+      s += 2;
+      break;
+    case '\0':
+      return *ret = 0, 0;
+    default:
+      /* ensure no other digits after it */
+      if (s[1])
+        return -1;
+    }
+  }
+
+  /* just strip underscores and pass to strtoll */
+  while (*s && p < q) {
+    int ch = *s++;
+    if (ch == '_') {
+      // disallow '__'
+      if (s[0] == '_')
+        return -1;
+      // numbers cannot end with '_'
+      if (s[0] == '\0')
+        return -1;
+      continue; /* skip _ */
+    }
+    *p++ = ch;
+  }
+
+  // if not at end-of-string or we ran out of buffer ...
+  if (*s || p == q)
+    return -1;
+
+  /* cap with NUL */
+  *p = 0;
+
+  /* Run strtoll on buf to get the integer */
+  char *endp;
+  errno = 0;
+  *ret = strtoll(buf, &endp, base);
+  return (errno || *endp) ? -1 : 0;
+}
+
+int toml_rtod_ex(toml_raw_t src, double *ret_, char *buf, int buflen) {
+  if (!src)
+    return -1;
+
+  char *p = buf;
+  char *q = p + buflen;
+  const char *s = src;
+  double dummy;
+  double *ret = ret_ ? ret_ : &dummy;
+
+  /* allow +/- */
+  if (s[0] == '+' || s[0] == '-')
+    *p++ = *s++;
+
+  /* disallow +_1.00 */
+  if (s[0] == '_')
+    return -1;
+
+  /* decimal point, if used, must be surrounded by at least one digit on each
+   * side */
+  {
+    char *dot = strchr(s, '.');
+    if (dot) {
+      if (dot == s || !isdigit(dot[-1]) || !isdigit(dot[1]))
+        return -1;
+    }
+  }
+
+  /* zero must be followed by . or 'e', or NUL */
+  if (s[0] == '0' && s[1] && !strchr("eE.", s[1]))
+    return -1;
+
+  /* just strip underscores and pass to strtod */
+  while (*s && p < q) {
+    int ch = *s++;
+    if (ch == '_') {
+      // disallow '__'
+      if (s[0] == '_')
+        return -1;
+      // disallow last char '_'
+      if (s[0] == 0)
+        return -1;
+      continue; /* skip _ */
+    }
+    *p++ = ch;
+  }
+  if (*s || p == q)
+    return -1; /* reached end of string or buffer is full? */
+
+  /* cap with NUL */
+  *p = 0;
+
+  /* Run strtod on buf to get the value */
+  char *endp;
+  errno = 0;
+  *ret = strtod(buf, &endp);
+  return (errno || *endp) ? -1 : 0;
+}
+
+int toml_rtod(toml_raw_t src, double *ret_) {
+  char buf[100];
+  return toml_rtod_ex(src, ret_, buf, sizeof(buf));
+}
+
+int toml_rtos(toml_raw_t src, char **ret) {
+  int multiline = 0;
+  const char *sp;
+  const char *sq;
+
+  *ret = 0;
+  if (!src)
+    return -1;
+
+  int qchar = src[0];
+  int srclen = strlen(src);
+  if (!(qchar == '\'' || qchar == '"')) {
+    return -1;
+  }
+
+  // triple quotes?
+  if (qchar == src[1] && qchar == src[2]) {
+    multiline = 1;
+    sp = src + 3;
+    sq = src + srclen - 3;
+    /* last 3 chars in src must be qchar */
+    if (!(sp <= sq && sq[0] == qchar && sq[1] == qchar && sq[2] == qchar))
+      return -1;
+
+    /* skip new line immediate after qchar */
+    if (sp[0] == '\n')
+      sp++;
+    else if (sp[0] == '\r' && sp[1] == '\n')
+      sp += 2;
+
+  } else {
+    sp = src + 1;
+    sq = src + srclen - 1;
+    /* last char in src must be qchar */
+    if (!(sp <= sq && *sq == qchar))
+      return -1;
+  }
+
+  if (qchar == '\'') {
+    *ret = norm_lit_str(sp, sq - sp, multiline, 0, 0);
+  } else {
+    *ret = norm_basic_str(sp, sq - sp, multiline, 0, 0);
+  }
+
+  return *ret ? 0 : -1;
+}
+
+toml_datum_t toml_string_at(const toml_array_t *arr, int idx) {
+  toml_datum_t ret;
+  memset(&ret, 0, sizeof(ret));
+  ret.ok = (0 == toml_rtos(toml_raw_at(arr, idx), &ret.u.s));
+  return ret;
+}
+
+toml_datum_t toml_bool_at(const toml_array_t *arr, int idx) {
+  toml_datum_t ret;
+  memset(&ret, 0, sizeof(ret));
+  ret.ok = (0 == toml_rtob(toml_raw_at(arr, idx), &ret.u.b));
+  return ret;
+}
+
+toml_datum_t toml_int_at(const toml_array_t *arr, int idx) {
+  toml_datum_t ret;
+  memset(&ret, 0, sizeof(ret));
+  ret.ok = (0 == toml_rtoi(toml_raw_at(arr, idx), &ret.u.i));
+  return ret;
+}
+
+toml_datum_t toml_double_at(const toml_array_t *arr, int idx) {
+  toml_datum_t ret;
+  memset(&ret, 0, sizeof(ret));
+  ret.ok = (0 == toml_rtod(toml_raw_at(arr, idx), &ret.u.d));
+  return ret;
+}
+
+toml_datum_t toml_timestamp_at(const toml_array_t *arr, int idx) {
+  toml_timestamp_t ts;
+  toml_datum_t ret;
+  memset(&ret, 0, sizeof(ret));
+  ret.ok = (0 == toml_rtots(toml_raw_at(arr, idx), &ts));
+  if (ret.ok) {
+    ret.ok = !!(ret.u.ts = MALLOC(sizeof(*ret.u.ts)));
+    if (ret.ok) {
+      *ret.u.ts = ts;
+      if (ret.u.ts->year)
+        ret.u.ts->year = &ret.u.ts->__buffer.year;
+      if (ret.u.ts->month)
+        ret.u.ts->month = &ret.u.ts->__buffer.month;
+      if (ret.u.ts->day)
+        ret.u.ts->day = &ret.u.ts->__buffer.day;
+      if (ret.u.ts->hour)
+        ret.u.ts->hour = &ret.u.ts->__buffer.hour;
+      if (ret.u.ts->minute)
+        ret.u.ts->minute = &ret.u.ts->__buffer.minute;
+      if (ret.u.ts->second)
+        ret.u.ts->second = &ret.u.ts->__buffer.second;
+      if (ret.u.ts->millisec)
+        ret.u.ts->millisec = &ret.u.ts->__buffer.millisec;
+      if (ret.u.ts->z)
+        ret.u.ts->z = ret.u.ts->__buffer.z;
+    }
+  }
+  return ret;
+}
+
+toml_datum_t toml_string_in(const toml_table_t *arr, const char *key) {
+  toml_datum_t ret;
+  memset(&ret, 0, sizeof(ret));
+  toml_raw_t raw = toml_raw_in(arr, key);
+  if (raw) {
+    ret.ok = (0 == toml_rtos(raw, &ret.u.s));
+  }
+  return ret;
+}
+
+toml_datum_t toml_bool_in(const toml_table_t *arr, const char *key) {
+  toml_datum_t ret;
+  memset(&ret, 0, sizeof(ret));
+  ret.ok = (0 == toml_rtob(toml_raw_in(arr, key), &ret.u.b));
+  return ret;
+}
+
+toml_datum_t toml_int_in(const toml_table_t *arr, const char *key) {
+  toml_datum_t ret;
+  memset(&ret, 0, sizeof(ret));
+  ret.ok = (0 == toml_rtoi(toml_raw_in(arr, key), &ret.u.i));
+  return ret;
+}
+
+toml_datum_t toml_double_in(const toml_table_t *arr, const char *key) {
+  toml_datum_t ret;
+  memset(&ret, 0, sizeof(ret));
+  ret.ok = (0 == toml_rtod(toml_raw_in(arr, key), &ret.u.d));
+  return ret;
+}
+
+toml_datum_t toml_timestamp_in(const toml_table_t *arr, const char *key) {
+  toml_timestamp_t ts;
+  toml_datum_t ret;
+  memset(&ret, 0, sizeof(ret));
+  ret.ok = (0 == toml_rtots(toml_raw_in(arr, key), &ts));
+  if (ret.ok) {
+    ret.ok = !!(ret.u.ts = MALLOC(sizeof(*ret.u.ts)));
+    if (ret.ok) {
+      *ret.u.ts = ts;
+      if (ret.u.ts->year)
+        ret.u.ts->year = &ret.u.ts->__buffer.year;
+      if (ret.u.ts->month)
+        ret.u.ts->month = &ret.u.ts->__buffer.month;
+      if (ret.u.ts->day)
+        ret.u.ts->day = &ret.u.ts->__buffer.day;
+      if (ret.u.ts->hour)
+        ret.u.ts->hour = &ret.u.ts->__buffer.hour;
+      if (ret.u.ts->minute)
+        ret.u.ts->minute = &ret.u.ts->__buffer.minute;
+      if (ret.u.ts->second)
+        ret.u.ts->second = &ret.u.ts->__buffer.second;
+      if (ret.u.ts->millisec)
+        ret.u.ts->millisec = &ret.u.ts->__buffer.millisec;
+      if (ret.u.ts->z)
+        ret.u.ts->z = ret.u.ts->__buffer.z;
+    }
+  }
+  return ret;
+}
+
+static int parse_millisec(const char *p, const char **endp) {
+  int ret = 0;
+  int unit = 100; /* unit in millisec */
+  for (; '0' <= *p && *p <= '9'; p++, unit /= 10) {
+    ret += (*p - '0') * unit;
+  }
+  *endp = p;
+  return ret;
+}
diff --git a/deps/toml/toml.h b/deps/toml/toml.h
new file mode 100644
index 0000000..19dc3d2
--- /dev/null
+++ b/deps/toml/toml.h
@@ -0,0 +1,175 @@
+/*
+  MIT License
+
+  Copyright (c) CK Tan
+  https://github.com/cktan/tomlc99
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in all
+  copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+  SOFTWARE.
+*/
+#ifndef TOML_H
+#define TOML_H
+
+#ifdef _MSC_VER
+#pragma warning(disable: 4996)
+#endif
+
+#include <stdint.h>
+#include <stdio.h>
+
+#ifdef __cplusplus
+#define TOML_EXTERN extern "C"
+#else
+#define TOML_EXTERN extern
+#endif
+
+typedef struct toml_timestamp_t toml_timestamp_t;
+typedef struct toml_table_t toml_table_t;
+typedef struct toml_array_t toml_array_t;
+typedef struct toml_datum_t toml_datum_t;
+
+/* Parse a file. Return a table on success, or 0 otherwise.
+ * Caller must toml_free(the-return-value) after use.
+ */
+TOML_EXTERN toml_table_t *toml_parse_file(FILE *fp, char *errbuf, int errbufsz);
+
+/* Parse a string containing the full config.
+ * Return a table on success, or 0 otherwise.
+ * Caller must toml_free(the-return-value) after use.
+ */
+TOML_EXTERN toml_table_t *toml_parse(char *conf, /* NUL terminated, please. */
+                                     char *errbuf, int errbufsz);
+
+/* Free the table returned by toml_parse() or toml_parse_file(). Once
+ * this function is called, any handles accessed through this tab
+ * directly or indirectly are no longer valid.
+ */
+TOML_EXTERN void toml_free(toml_table_t *tab);
+
+/* Timestamp types. The year, month, day, hour, minute, second, z
+ * fields may be NULL if they are not relevant. e.g. In a DATE
+ * type, the hour, minute, second and z fields will be NULLs.
+ */
+struct toml_timestamp_t {
+  struct { /* internal. do not use. */
+    int year, month, day;
+    int hour, minute, second, millisec;
+    char z[10];
+  } __buffer;
+  int *year, *month, *day;
+  int *hour, *minute, *second, *millisec;
+  char *z;
+};
+
+/*-----------------------------------------------------------------
+ *  Enhanced access methods
+ */
+struct toml_datum_t {
+  int ok;
+  union {
+    toml_timestamp_t *ts; /* ts must be freed after use */
+    char *s;              /* string value. s must be freed after use */
+    int b;                /* bool value */
+    int64_t i;            /* int value */
+    double d;             /* double value */
+  } u;
+};
+
+/* on arrays: */
+/* ... retrieve size of array. */
+TOML_EXTERN int toml_array_nelem(const toml_array_t *arr);
+/* ... retrieve values using index. */
+TOML_EXTERN toml_datum_t toml_string_at(const toml_array_t *arr, int idx);
+TOML_EXTERN toml_datum_t toml_bool_at(const toml_array_t *arr, int idx);
+TOML_EXTERN toml_datum_t toml_int_at(const toml_array_t *arr, int idx);
+TOML_EXTERN toml_datum_t toml_double_at(const toml_array_t *arr, int idx);
+TOML_EXTERN toml_datum_t toml_timestamp_at(const toml_array_t *arr, int idx);
+/* ... retrieve array or table using index. */
+TOML_EXTERN toml_array_t *toml_array_at(const toml_array_t *arr, int idx);
+TOML_EXTERN toml_table_t *toml_table_at(const toml_array_t *arr, int idx);
+
+/* on tables: */
+/* ... retrieve the key in table at keyidx. Return 0 if out of range. */
+TOML_EXTERN const char *toml_key_in(const toml_table_t *tab, int keyidx);
+/* ... returns 1 if key exists in tab, 0 otherwise */
+TOML_EXTERN int toml_key_exists(const toml_table_t *tab, const char *key);
+/* ... retrieve values using key. */
+TOML_EXTERN toml_datum_t toml_string_in(const toml_table_t *arr,
+                                        const char *key);
+TOML_EXTERN toml_datum_t toml_bool_in(const toml_table_t *arr, const char *key);
+TOML_EXTERN toml_datum_t toml_int_in(const toml_table_t *arr, const char *key);
+TOML_EXTERN toml_datum_t toml_double_in(const toml_table_t *arr,
+                                        const char *key);
+TOML_EXTERN toml_datum_t toml_timestamp_in(const toml_table_t *arr,
+                                           const char *key);
+/* .. retrieve array or table using key. */
+TOML_EXTERN toml_array_t *toml_array_in(const toml_table_t *tab,
+                                        const char *key);
+TOML_EXTERN toml_table_t *toml_table_in(const toml_table_t *tab,
+                                        const char *key);
+
+/*-----------------------------------------------------------------
+ * lesser used
+ */
+/* Return the array kind: 't'able, 'a'rray, 'v'alue, 'm'ixed */
+TOML_EXTERN char toml_array_kind(const toml_array_t *arr);
+
+/* For array kind 'v'alue, return the type of values
+   i:int, d:double, b:bool, s:string, t:time, D:date, T:timestamp, 'm'ixed
+   0 if unknown
+*/
+TOML_EXTERN char toml_array_type(const toml_array_t *arr);
+
+/* Return the key of an array */
+TOML_EXTERN const char *toml_array_key(const toml_array_t *arr);
+
+/* Return the number of key-values in a table */
+TOML_EXTERN int toml_table_nkval(const toml_table_t *tab);
+
+/* Return the number of arrays in a table */
+TOML_EXTERN int toml_table_narr(const toml_table_t *tab);
+
+/* Return the number of sub-tables in a table */
+TOML_EXTERN int toml_table_ntab(const toml_table_t *tab);
+
+/* Return the key of a table*/
+TOML_EXTERN const char *toml_table_key(const toml_table_t *tab);
+
+/*--------------------------------------------------------------
+ * misc
+ */
+TOML_EXTERN int toml_utf8_to_ucs(const char *orig, int len, int64_t *ret);
+TOML_EXTERN int toml_ucs_to_utf8(int64_t code, char buf[6]);
+TOML_EXTERN void toml_set_memutil(void *(*xxmalloc)(size_t),
+                                  void (*xxfree)(void *));
+
+/*--------------------------------------------------------------
+ *  deprecated
+ */
+/* A raw value, must be processed by toml_rto* before using. */
+typedef const char *toml_raw_t;
+TOML_EXTERN toml_raw_t toml_raw_in(const toml_table_t *tab, const char *key);
+TOML_EXTERN toml_raw_t toml_raw_at(const toml_array_t *arr, int idx);
+TOML_EXTERN int toml_rtos(toml_raw_t s, char **ret);
+TOML_EXTERN int toml_rtob(toml_raw_t s, int *ret);
+TOML_EXTERN int toml_rtoi(toml_raw_t s, int64_t *ret);
+TOML_EXTERN int toml_rtod(toml_raw_t s, double *ret);
+TOML_EXTERN int toml_rtod_ex(toml_raw_t s, double *ret, char *buf, int buflen);
+TOML_EXTERN int toml_rtots(toml_raw_t s, toml_timestamp_t *ret);
+
+#endif /* TOML_H */
diff --git a/sdk/example/CMakeLists.txt b/sdk/example/CMakeLists.txt
index a11a7e3..e45be02 100644
--- a/sdk/example/CMakeLists.txt
+++ b/sdk/example/CMakeLists.txt
@@ -1,12 +1,9 @@
-
-add_definitions(-fPIC)
-
-add_library(custom_event_plugin
+add_library(custom_event_plugin SHARED
 	custom_event_plugin.cpp
 )
-set_target_properties(custom_event_plugin  PROPERTIES PREFIX "")
+set_target_properties(custom_event_plugin PROPERTIES PREFIX "")
 
-add_library(http_event_plugin
-	    http_event_plugin.cpp
+add_library(http_event_plugin SHARED
+	http_event_plugin.cpp
 )
-set_target_properties(http_event_plugin  PROPERTIES PREFIX "")
\ No newline at end of file
+set_target_properties(http_event_plugin PROPERTIES PREFIX "")
\ No newline at end of file
diff --git a/sdk/example/custom_event_plugin.cpp b/sdk/example/custom_event_plugin.cpp
index d5b95e9..0d7f1c4 100644
--- a/sdk/example/custom_event_plugin.cpp
+++ b/sdk/example/custom_event_plugin.cpp
@@ -2,37 +2,57 @@
 #include "packet.h"
 #include "plugin.h"
 
-struct custom_session_event *_event = nullptr;
+#include <stddef.h>
+#include <stdlib.h>
+#include <stdio.h>
 
-void *custom_decode(const char *payload, uint32_t len, void **pme)
+static char *g_handler = NULL;
+
+static void *custom_decode(const char *payload, uint16_t len, void **pme)
 {
-	return nullptr;
+	return NULL;
 }
 
-int custom_plugin_entry(const struct stellar_session *s, int what, struct stellar_packet *p, const char *payload, uint32_t len, void **pme)
+extern "C" void custom_plugin_tcp_entry(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
 {
-	struct stellar_session_event_extras *info= (struct stellar_session_event_extras *)custom_decode(payload, len, pme);
-	struct stellar_session *new_session=session_manager_session_derive(s, "CUSTOM_A");
+	char **per_session_pme = (char **)pme;
+
+	printf("RUN custom_plugin_tcp_entry, event: %d\n", event);
+
+	struct stellar_session_event_extras *info = (struct stellar_session_event_extras *)custom_decode(payload, len, pme);
+	struct stellar_session *new_session = session_manager_session_derive(s, "CUSTOM");
+
 	session_manager_trigger_event(new_session, SESSION_EVENT_OPENING, info);
 	session_manager_trigger_event(new_session, SESSION_EVENT_META, info);
-	return 0;
-
 }
 
-int custom_event_plugin_entry(const struct stellar_session *s, int what, struct stellar_packet *p, const char *payload, uint32_t len, void **pme)
+extern "C" void custom_plugin_custom_entry(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
 {
-	return 0;
+	char **per_session_pme = (char **)pme;
 
+	printf("RUN custom_plugin_custom_entry, event: %d\n", event);
 }
 
-int custom_plugin_init()
+extern "C" int custom_plugin_init(void)
 {
-	//plugin_manager_event_register("TCP", custom_plugin_entry, nullptr);
-	//plugin_manager_event_register("CUSTOM_A", custom_event_plugin_entry, nullptr);
+	printf("RUN custom_plugin_init\n");
+
+	if (g_handler == NULL)
+	{
+		g_handler = (char *)malloc(1024);
+		snprintf(g_handler, 1024, "222222");
+	}
+
 	return 0;
 }
 
-void custom_plugin_destroy()
+extern "C" void custom_plugin_exit(void)
 {
-	return ;
+	printf("RUN custom_plugin_exit\n");
+
+	if (g_handler)
+	{
+		free(g_handler);
+		g_handler = NULL;
+	}
 }
\ No newline at end of file
diff --git a/sdk/example/http_event_plugin.cpp b/sdk/example/http_event_plugin.cpp
index 68dcf06..e41d8b6 100644
--- a/sdk/example/http_event_plugin.cpp
+++ b/sdk/example/http_event_plugin.cpp
@@ -1,22 +1,82 @@
 #include "session.h"
 #include "packet.h"
 #include "plugin.h"
-#include "http.h"
 
+#include <stdlib.h>
+#include <stdio.h>
 
+static char *g_handler = NULL;
 
-int http_event_plugin_entry(const struct stellar_session *s, int what, struct stellar_packet *p, const char *payload, uint32_t len, void **pme)
+struct per_session_pme_info
 {
+	int flag;
+	char data[16];
+};
+
+extern "C" void http_event_plugin_entry(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
+{
+	struct per_session_pme_info **per_session_pme = (struct per_session_pme_info **)pme;
+
+	printf("RUN http_event_plugin_entry, event: %d\n", event);
+
+	if (event & SESSION_EVENT_OPENING)
+	{
+		if (*per_session_pme == NULL)
+		{
+			struct per_session_pme_info *cur_ctx = (struct per_session_pme_info *)malloc(sizeof(struct per_session_pme_info));
+			snprintf(cur_ctx->data, 6, "******");
+			*per_session_pme = *&cur_ctx;
+			printf("http_event_plugin_entry->opening_handler\n");
+		}
+	}
+
+	if (event & SESSION_EVENT_RAWPKT)
+	{
+		printf("http_event_plugin_entry->rawpkt_handler\n");
+	}
+
+	if (event & SESSION_EVENT_ORDPKT)
+	{
+		printf("http_event_plugin_entry->ordpkt_handler\n");
+	}
+
+	if (event & SESSION_EVENT_META)
+	{
+		printf("http_event_plugin_entry->meta_handler\n");
+	}
+
+	if (event & SESSION_EVENT_CLOSING)
+	{
+		if (*per_session_pme)
+		{
+			printf("http_event_plugin_entry->closing_hanler\n");
+
+			free(*per_session_pme);
+			*per_session_pme = NULL;
+		}
+	}
+}
+
+extern "C" int http_event_plugin_init(void)
+{
+	printf("RUN http_event_plugin_init\n");
+
+	if (g_handler == NULL)
+	{
+		g_handler = (char *)malloc(1024);
+		snprintf(g_handler, 1024, "111111");
+	}
+
 	return 0;
 }
 
-int http_event_plugin_init()
+extern "C" void http_event_plugin_exit(void)
 {
-	//plugin_manager_event_register("HTTP", http_event_plugin_entry, nullptr);
-	return 0;
-}
+	printf("RUN http_event_plugin_exit\n");
 
-void http_event_plugin_destroy()
-{
-	return ;
+	if (g_handler)
+	{
+		free(g_handler);
+		g_handler = NULL;
+	}
 }
\ No newline at end of file
diff --git a/sdk/example/plugins/custom_event_plugin/custom_event_plugin.inf b/sdk/example/plugins/custom_event_plugin/custom_event_plugin.inf
index 479d474..c7d3fe3 100644
--- a/sdk/example/plugins/custom_event_plugin/custom_event_plugin.inf
+++ b/sdk/example/plugins/custom_event_plugin/custom_event_plugin.inf
@@ -1,16 +1,14 @@
 [PLUGINFO]
-INIT_FUNC=custom_plugin_init
-EXIT_FUNC=custom_plugin_exit
-LIBRARY_PATH=./plugins/custom_event_plugin/custom_event_plugin.so
+INIT_FUNC="custom_plugin_init"
+EXIT_FUNC="custom_plugin_exit"
+LIBRARY_PATH="./plugins/custom_event_plugin/custom_event_plugin.so"
 
+# Support SESSION_EVENT_TYPE: "SESSION_EVENT_OPENING", "SESSION_EVENT_RAWPKT", "SESSION_EVENT_ORDPKT", "SESSION_EVENT_META", "SESSION_EVENT_CLOSING", "SESSION_EVENT_ALL"
 
-# Support SESSION_EVENT_TYPE
-# OPENING,RAWPKT,ORDPKT,META,CLOSING,ALL
+[SESSION_NAME.TCP]
+SESSION_EVENT_TYPE=["SESSION_EVENT_ALL"]
+SESSION_EVENT_CALLBACK="custom_plugin_tcp_entry"
 
-[SESSION_TYPE.TCP]
-SESSION_EVENT_TYPE=ALL
-SESSION_EVENT_CALLBACK=custom_plugin_entry
-
-[SESSION_TYPE.CUSTOM_A]
-SESSION_EVENT_TYPE=OPENING,ORDPKT,CLOSING
-SESSION_EVENT_CALLBACK=custom_event_plugin_entry
\ No newline at end of file
+[SESSION_NAME.CUSTOM]
+SESSION_EVENT_TYPE=["SESSION_EVENT_OPENING","SESSION_EVENT_ORDPKT","SESSION_EVENT_CLOSING"]
+SESSION_EVENT_CALLBACK="custom_plugin_custom_entry"
\ No newline at end of file
diff --git a/sdk/example/plugins/http_event_plugin/http_event_plugin.inf b/sdk/example/plugins/http_event_plugin/http_event_plugin.inf
index 4609300..a58a405 100644
--- a/sdk/example/plugins/http_event_plugin/http_event_plugin.inf
+++ b/sdk/example/plugins/http_event_plugin/http_event_plugin.inf
@@ -1,8 +1,10 @@
 [PLUGINFO]
-INIT_FUNC=http_event_plugin_init
-EXIT_FUNC=http_event_plugin_exit
-LIBRARY_PATH=./plugins/http_event_plugin/http_event_plugin.so
+INIT_FUNC="http_event_plugin_init"
+EXIT_FUNC="http_event_plugin_exit"
+LIBRARY_PATH="./plugins/http_event_plugin/http_event_plugin.so"
 
-[SESSION_TYPE.HTTP]
-SESSION_EVENT_TYPE=ALL
-SESSION_EVENT_CALLBACK=http_event_plugin_entry
\ No newline at end of file
+# Support SESSION_EVENT_TYPE: "SESSION_EVENT_OPENING", "SESSION_EVENT_RAWPKT", "SESSION_EVENT_ORDPKT", "SESSION_EVENT_META", "SESSION_EVENT_CLOSING", "SESSION_EVENT_ALL"
+
+[SESSION_NAME.HTTP]
+SESSION_EVENT_TYPE=["SESSION_EVENT_ALL"]
+SESSION_EVENT_CALLBACK="http_event_plugin_entry"
\ No newline at end of file
diff --git a/sdk/example/plugins/plugins.inf b/sdk/example/plugins/plugins.inf
index 50e40af..ad3f27e 100644
--- a/sdk/example/plugins/plugins.inf
+++ b/sdk/example/plugins/plugins.inf
@@ -1,2 +1,4 @@
-./http_event_plugin/http_event_plugin.inf
-./custom_event_plugin/custom_event_plugin.inf
\ No newline at end of file
+# Relative path, relative to the installation path of stellar
+
+./plugins/http_event_plugin/http_event_plugin.inf
+./plugins/custom_event_plugin/custom_event_plugin.inf
\ No newline at end of file
diff --git a/sdk/include/http.h b/sdk/include/http.h
index d7f3fbf..6250055 100644
--- a/sdk/include/http.h
+++ b/sdk/include/http.h
@@ -1,6 +1,5 @@
 #pragma once
 
-#include "packet.h"
 #include "session.h"
 
-void http_decoder(const struct stellar_session *s, int what, struct stellar_packet *p, const char *payload, uint16_t len, void **pme);
\ No newline at end of file
+void http_decoder(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme);
\ No newline at end of file
diff --git a/sdk/include/plugin.h b/sdk/include/plugin.h
index ac3b279..d213f7c 100644
--- a/sdk/include/plugin.h
+++ b/sdk/include/plugin.h
@@ -2,8 +2,14 @@
 
 #include "session.h"
 
-typedef int plugin_init_callback(void **pme);
-typedef void plugin_exit_callback(void *pme);
+typedef int plugin_init_callback(void);
+typedef void plugin_exit_callback(void);
 
-void plugin_remove_from_session_event(struct stellar_event *ev,
-                                 struct stellar_session *s);
\ No newline at end of file
+void plugin_remove_from_session_event(struct stellar_event *ev, struct stellar_session *s);
+
+/******************************************************************************
+ * Public API: between plugin and plugin_manager
+ ******************************************************************************/
+
+// TODO
+// TODO
\ No newline at end of file
diff --git a/sdk/include/session.h b/sdk/include/session.h
index b497fab..19bb566 100644
--- a/sdk/include/session.h
+++ b/sdk/include/session.h
@@ -25,6 +25,7 @@ enum stellar_session_type
 
 enum session_event_type
 {
+	SESSION_EVENT_UNKNOWN = (0x00),
 	SESSION_EVENT_OPENING = (0x01 << 1),
 	SESSION_EVENT_RAWPKT = (0x01 << 2),
 	SESSION_EVENT_ORDPKT = (0x01 << 3),
@@ -35,11 +36,7 @@ enum session_event_type
 
 struct stellar_session_event_extras;
 
-typedef void (fn_session_event_callback)(const struct stellar_session *s, int what, struct stellar_packet *p, const char *payload, uint16_t len, void **pme);
+typedef void(fn_session_event_callback)(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme);
 
-void session_manager_trigger_event(struct stellar_session *s, 
-                                   enum session_event_type type,
-                                   struct stellar_session_event_extras *info);
-
-struct stellar_session *session_manager_session_derive(const struct stellar_session *this_session, 
-                                               const char *new_session_type_name);
\ No newline at end of file
+void session_manager_trigger_event(struct stellar_session *s, enum session_event_type type, struct stellar_session_event_extras *info);
+struct stellar_session *session_manager_session_derive(const struct stellar_session *this_session, const char *session_name);
\ No newline at end of file
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index ede3dd3..6b4ad06 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,11 +1,9 @@
-
 include_directories(${CMAKE_SOURCE_DIR}/sdk/include)
 include_directories(${CMAKE_SOURCE_DIR}/deps/)
 include_directories(${CMAKE_SOURCE_DIR}/src/packet_io/)
 include_directories(${CMAKE_SOURCE_DIR}/src/session_manager/)
 include_directories(${CMAKE_SOURCE_DIR}/src/plugin_manager/)
 
-
 enable_testing()
 add_subdirectory(packet_io)
 add_subdirectory(session_manager)
@@ -16,4 +14,13 @@ add_executable(stellar
 	main.cpp
 )
 
-target_link_libraries(stellar pthread packet_io plugin_manager session_manager http)
\ No newline at end of file
+target_link_libraries(
+	stellar
+	pthread
+	packet_io
+	plugin_manager
+	session_manager
+	http
+	toml
+	dl
+)
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index 5071278..8d1655d 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -59,11 +59,12 @@ int main(int argc, char ** argv)
 	struct plugin_manager *plug_mgr = plugin_manager_create();
 
 	// register build-in plugin
-	plugin_manager_register(plug_mgr, "HTTP", http_decoder);
+	plugin_manager_register(plug_mgr, "HTTP", SESSION_EVENT_ALL, http_decoder);
 
 	// load external plugins
-	char absolute_plugin_file[] = "/op/tsg/sapp/plug/plugins.inf";
-	plugin_manager_load(plug_mgr, absolute_plugin_file);
+	char prefix_path[] = "/op/tsg/stellar/";
+	char file_path[] = "./plugs/plugins.inf";
+	plugin_manager_load(plug_mgr, prefix_path, file_path);
 
 	//packet_io_init
 	struct packet_io_device *dev = packet_io_init(1, "stellar", "cap0");
@@ -78,6 +79,7 @@ int main(int argc, char ** argv)
 		usleep(1);
 	}
 
+	plugin_manager_unload(plug_mgr);
 	plugin_manager_destory(plug_mgr);
 	
 	return 0;
diff --git a/src/plugin_manager/CMakeLists.txt b/src/plugin_manager/CMakeLists.txt
index 5850d1f..1901671 100644
--- a/src/plugin_manager/CMakeLists.txt
+++ b/src/plugin_manager/CMakeLists.txt
@@ -1,4 +1,10 @@
-add_library(plugin_manager 
-	    plugin_manager.cpp
+add_library(plugin_manager
+	plugin_manager_config.cpp
+	plugin_manager_module.cpp
+	plugin_manager_util.cpp
+	plugin_manager.cpp
 )
-target_include_directories(plugin_manager PUBLIC ${CMAKE_SOURCE_DIR})
\ No newline at end of file
+
+target_include_directories(plugin_manager PUBLIC ${CMAKE_SOURCE_DIR})
+
+add_subdirectory(test)
\ No newline at end of file
diff --git a/src/plugin_manager/plugin_manager.cpp b/src/plugin_manager/plugin_manager.cpp
index 1755cc4..7b6492a 100644
--- a/src/plugin_manager/plugin_manager.cpp
+++ b/src/plugin_manager/plugin_manager.cpp
@@ -1,106 +1,313 @@
 #include "deps/uthash/uthash.h"
-#include "sdk/include/session.h"
-#include "sdk/include/plugin.h"
 #include "session_manager.h"
-#include "plugin_manager.h"
+#include "plugin_manager_util.h"
+#include "plugin_manager_config.h"
+#include "plugin_manager_module.h"
 
-#include <sys/queue.h>
 #include <assert.h>
+#include <errno.h>
 
 /******************************************************************************
- * CallBack Static Hash Table (For Global)
+ * CallBack Runtime (For Per Session)
  ******************************************************************************/
 
-struct session_event_callback_static
+struct eventcb_runtime
 {
-	enum session_event_type event;
-	fn_session_event_callback *callback;
-};
-
-/*
- * Hast table
- *
- * key: string -> session_type
- * val: array  -> event_cbs
- */
-struct managed_session_event_callback
-{
-	char session_type[16];
-	struct session_event_callback_static event_cbs[0]; // dynamic array
-	// Record the number of callback functions that want to process the current session
-	int event_cbs_num;
-	UT_hash_handle hh;
-};
-
-/******************************************************************************
- * CallBack Runtime Array (For Per Session)
- ******************************************************************************/
-
-struct session_event_callback_runtime
-{
-	int skip; // for skip this plugin callback
-	void *callback_args;
+	int skip;
+	void *cb_args;
 
 	enum session_event_type event;
-	fn_session_event_callback *callback;
+	fn_session_event_callback *cb;
 };
 
 struct session_plugin_ctx
 {
-	int event_cbs_num;
-	struct session_event_callback_runtime event_cbs[0]; // dynamic array
+	int current_plugin_index;
+	int eventcb_num;
+	struct eventcb_runtime *eventcbs;
 };
 
 /******************************************************************************
- * struct plugin_manager
+ * CallBack Static (For Per Plugin Manager)
  ******************************************************************************/
 
-/*
- * Each plugin has an init_cb and an exit_cb, but may have multiple entry_cb.
- * entry_cb is stored in the global_session_callback_ctx.
- */
-struct plugin_ctx
+struct eventcb_static
 {
-	char *name;
-	char *library;
-	/*
-	 * Stores the context generated by the plugin initialization,
-	 * which is used to release resources when the plugin ends.
-	 */
-	void *pme;
-	plugin_init_callback *init_cb;
-	plugin_exit_callback *exit_cb;
+	enum session_event_type event;
+	fn_session_event_callback *cb;
 };
 
+struct plugin_manager_eventcb
+{
+	char session_name[MAX_SESSION_NAME_LENGTH]; // key
+
+	int eventcb_num;				 // val size
+	struct eventcb_static *eventcbs; // val: dynamic array
+
+	UT_hash_handle hh;
+};
+
+/******************************************************************************
+ * Struct plugin_manager
+ ******************************************************************************/
+
 struct plugin_manager
 {
-	struct managed_session_event_callback *cb_table;
-	struct plugin_ctx plugins[MAX_PLUGIN_NUM];
+	int used_module_num;
+	int used_config_num;
+	int used_evencb_num; // only plugin register eventcb numbers
+
+	struct plugin_manager_module *modules[MAX_PLUGIN_NUM];
+	struct plugin_manager_config *configs[MAX_PLUGIN_NUM];
+	struct plugin_manager_eventcb *evcb_htable;
 };
 
 /******************************************************************************
- * Private API
+ * Create/Destory plugin ctx (per session)
  ******************************************************************************/
 
-static void plugin_manager_handle_opening_event(struct plugin_manager *plug_mgr, struct stellar_event *event)
+static struct session_plugin_ctx *plugin_manager_create_plugin_ctx(struct plugin_manager *plug_mgr, const char *session_name)
 {
+	if (session_name == NULL || strlen(session_name) == 0)
+	{
+		plugin_manager_log(ERROR, "invalid parameter, session name is empty");
+		return NULL;
+	}
+
+	struct plugin_manager_eventcb *elem;
+	HASH_FIND_STR(plug_mgr->evcb_htable, session_name, elem);
+	if (elem == NULL)
+	{
+		plugin_manager_log(ERROR, "can't find event callback for session name '%s'", session_name);
+		return NULL;
+	}
+	else
+	{
+		struct session_plugin_ctx *plug_ctx = safe_alloc(struct session_plugin_ctx, 1);
+		plug_ctx->eventcb_num = elem->eventcb_num;
+		plug_ctx->eventcbs = safe_alloc(struct eventcb_runtime, plug_ctx->eventcb_num);
+
+		for (int i = 0; i < plug_ctx->eventcb_num; i++)
+		{
+			plug_ctx->eventcbs[i].skip = 0;
+			plug_ctx->eventcbs[i].event = elem->eventcbs[i].event;
+			plug_ctx->eventcbs[i].cb = elem->eventcbs[i].cb;
+			plug_ctx->eventcbs[i].cb_args = NULL;
+		}
+
+		return plug_ctx;
+	}
 }
 
-static void plugin_manager_handle_data_event(struct plugin_manager *plug_mgr, struct stellar_event *event)
-{
-}
-
-static void plugin_manager_handle_closing_event(struct plugin_manager *plug_mgr, struct stellar_event *event)
+static void plugin_manager_destory_plugin_ctx(struct session_plugin_ctx *plug_ctx)
 {
+	if (plug_ctx)
+	{
+		safe_free(plug_ctx->eventcbs);
+		safe_free(plug_ctx);
+	}
 }
 
 /******************************************************************************
- * Public API
+ * Tools for managing plugins
  ******************************************************************************/
 
+static int plugin_manager_parse_plugins(struct plugin_manager *plug_mgr, const char *prefix, const char *file)
+{
+	char plugin_inf[4096] = {0};
+	char line_buffer[4096] = {0};
+	if (strlen(prefix) <= 0)
+	{
+		plugin_manager_log(ERROR, "Invalid parameter, plugin config file prefix cannot be empty");
+		return -1;
+	}
+	if (strlen(file) <= 0)
+	{
+		plugin_manager_log(ERROR, "Invalid parameter, plugin config file name cannot be empty");
+		return -1;
+	}
+	strcat_prefix_and_file(prefix, file, plugin_inf, sizeof(plugin_inf));
+
+	FILE *fp = fopen(plugin_inf, "r");
+	if (fp == NULL)
+	{
+		plugin_manager_log(ERROR, "can't open %s, %s", plugin_inf, strerror(errno));
+		return -1;
+	}
+
+	while (fgets(line_buffer, sizeof(line_buffer), fp))
+	{
+		if ('#' == line_buffer[0] || '\n' == line_buffer[0])
+		{
+			memset(line_buffer, 0, sizeof(line_buffer));
+			continue;
+		}
+
+		if (plug_mgr->used_config_num >= MAX_PLUGIN_NUM)
+		{
+			plugin_manager_log(ERROR, "the number of registered plugins exceeds the limit and cannot exceed %d", MAX_PLUGIN_NUM);
+			goto err;
+		}
+
+		struct plugin_manager_config *config = plugin_mangager_config_create();
+		if (plugin_mangager_config_parse(config, prefix, line_buffer) == -1)
+		{
+			plugin_mangager_config_destory(config);
+			goto err;
+		}
+
+		plug_mgr->configs[plug_mgr->used_config_num] = config;
+		plug_mgr->used_config_num++;
+		memset(line_buffer, 0, sizeof(line_buffer));
+	}
+
+	fclose(fp);
+
+	return 0;
+
+err:
+
+	if (fp)
+	{
+		fclose(fp);
+		fp = NULL;
+	}
+
+	return -1;
+}
+
+static int plugin_manager_open_plugins(struct plugin_manager *plug_mgr)
+{
+	for (int i = 0; i < plug_mgr->used_config_num; i++)
+	{
+		struct plugin_manager_config *config = plug_mgr->configs[i];
+		struct plugin_manager_module *module = plugin_manager_module_open(config);
+		if (module == NULL)
+		{
+			return -1;
+		}
+		plug_mgr->modules[plug_mgr->used_module_num] = module;
+		plug_mgr->used_module_num++;
+	}
+
+	return 0;
+}
+
+static int plugin_manager_register_plugins(struct plugin_manager *plug_mgr)
+{
+	for (int i = 0; i < plug_mgr->used_module_num; i++)
+	{
+		struct plugin_manager_module *module = plug_mgr->modules[i];
+		if (plugin_manager_module_register(plug_mgr, module) == -1)
+		{
+			return -1;
+		}
+		plug_mgr->used_evencb_num++;
+	}
+
+	return 0;
+}
+
+static int plugin_manager_init_plugins(struct plugin_manager *plug_mgr)
+{
+	for (int i = 0; i < plug_mgr->used_module_num; i++)
+	{
+		struct plugin_manager_module *module = plug_mgr->modules[i];
+		if (plugin_manager_module_init(module) == -1)
+		{
+			return -1;
+		}
+		double percentage = ((double)(i + 1)) / ((double)plug_mgr->used_module_num) * ((double)100);
+		plugin_manager_log(INFO, "Plugin initialization progress: [%.2f%]", percentage);
+	}
+
+	return 0;
+}
+
+static void plugin_manager_exit_plugins(struct plugin_manager *plug_mgr)
+{
+	if (plug_mgr && plug_mgr->used_module_num)
+	{
+		for (int i = 0; i < plug_mgr->used_module_num; i++)
+		{
+			struct plugin_manager_module *module = plug_mgr->modules[i];
+			plugin_manager_module_exit(module);
+		}
+	}
+}
+
+static void plugin_manager_close_plugins(struct plugin_manager *plug_mgr)
+{
+	if (plug_mgr && plug_mgr->used_module_num)
+	{
+		for (int i = 0; i < plug_mgr->used_module_num; i++)
+		{
+			struct plugin_manager_module *module = plug_mgr->modules[i];
+			plugin_manager_module_close(module);
+		}
+		plug_mgr->used_module_num = 0;
+	}
+}
+
+// deparse for destory parse
+static void plugin_manager_deparse_plugins(struct plugin_manager *plug_mgr)
+{
+	if (plug_mgr && plug_mgr->used_config_num)
+	{
+		for (int i = 0; i < plug_mgr->used_config_num; i++)
+		{
+			struct plugin_manager_config *config = plug_mgr->configs[i];
+			plugin_mangager_config_destory(config);
+		}
+		plug_mgr->used_config_num = 0;
+	}
+}
+
+/******************************************************************************
+ * Public API for managing plugins
+ ******************************************************************************/
+
+int plugin_manager_load(struct plugin_manager *plug_mgr, const char *prefix, const char *file)
+{
+	if (plugin_manager_parse_plugins(plug_mgr, prefix, file) == -1)
+	{
+		return -1;
+	}
+
+	if (plugin_manager_open_plugins(plug_mgr) == -1)
+	{
+		return -1;
+	}
+
+	if (plugin_manager_register_plugins(plug_mgr) == -1)
+	{
+		return -1;
+	}
+
+	if (plugin_manager_init_plugins(plug_mgr) == -1)
+	{
+		return -1;
+	}
+
+	return 0;
+}
+
+void plugin_manager_unload(struct plugin_manager *plug_mgr)
+{
+	plugin_manager_exit_plugins(plug_mgr);
+	plugin_manager_close_plugins(plug_mgr);
+	plugin_manager_deparse_plugins(plug_mgr);
+}
+
 struct plugin_manager *plugin_manager_create()
 {
-	struct plugin_manager *plug_mgr = NULL;
+	struct plugin_manager *plug_mgr = safe_alloc(struct plugin_manager, 1);
+
+	plug_mgr->used_module_num = 0;
+	plug_mgr->used_config_num = 0;
+	plug_mgr->used_evencb_num = 0;
+
+	plug_mgr->evcb_htable = NULL;
 
 	return plug_mgr;
 }
@@ -109,45 +316,138 @@ void plugin_manager_destory(struct plugin_manager *plug_mgr)
 {
 	if (plug_mgr)
 	{
+		if (plug_mgr->evcb_htable)
+		{
+			struct plugin_manager_eventcb *elem;
+			struct plugin_manager_eventcb *tmp;
+			HASH_ITER(hh, plug_mgr->evcb_htable, elem, tmp)
+			{
+				HASH_DEL(plug_mgr->evcb_htable, elem);
+
+				safe_free(elem->eventcbs);
+				safe_free(elem);
+			}
+
+			plug_mgr->evcb_htable = NULL;
+			plug_mgr->used_evencb_num = 0;
+		}
+
+		plugin_manager_unload(plug_mgr);
+		safe_free(plug_mgr);
 	}
 }
 
-int plugin_manager_load(struct plugin_manager *plug_mgr, const char *plugin_file)
+int plugin_manager_register(struct plugin_manager *plug_mgr, const char *session_name, enum session_event_type event, fn_session_event_callback *cb)
 {
-	return 0;
-}
+	if (strlen(session_name) <= 0)
+	{
+		plugin_manager_log(ERROR, "invalid parameter, session name is empty");
+		return -1;
+	}
 
-void plugin_manager_unload(struct plugin_manager *plug_mgr)
-{
-}
+	if (strlen(session_name) > MAX_SESSION_NAME_LENGTH)
+	{
+		plugin_manager_log(ERROR, "invalid parameter, session name '%s' is too long and exceeds '%d' bytes", session_name, MAX_SESSION_NAME_LENGTH);
+		return -1;
+	}
+
+	if (cb == NULL)
+	{
+		plugin_manager_log(ERROR, "invalid parameter, the callback corresponding to the session name '%s' is null", session_name);
+		return -1;
+	}
+
+	struct plugin_manager_eventcb *elem;
+	HASH_FIND_STR(plug_mgr->evcb_htable, session_name, elem);
+	// session_name exists, add a new cb to the end of the eventcbs dynamic array
+	if (elem)
+	{
+		elem->eventcbs = (struct eventcb_static *)realloc(elem->eventcbs, (elem->eventcb_num + 1) * sizeof(struct eventcb_static));
+
+		elem->eventcbs[elem->eventcb_num].event = event;
+		elem->eventcbs[elem->eventcb_num].cb = cb;
+
+		elem->eventcb_num++;
+	}
+	// session_name does not exist, allocate a new node elem, and add elem to the hash table
+	else
+	{
+		elem = safe_alloc(struct plugin_manager_eventcb, 1);
+		memcpy(elem->session_name, session_name, strlen(session_name));
+
+		elem->eventcbs = (struct eventcb_static *)realloc(elem->eventcbs, (elem->eventcb_num + 1) * sizeof(struct eventcb_static));
+
+		elem->eventcbs[elem->eventcb_num].event = event;
+		elem->eventcbs[elem->eventcb_num].cb = cb;
+
+		elem->eventcb_num++;
+
+		HASH_ADD_STR(plug_mgr->evcb_htable, session_name, elem);
+	}
 
-int plugin_manager_register(struct plugin_manager *plug_mgr, const char *session_type, fn_session_event_callback *callback)
-{
 	return 0;
 }
 
 void plugin_manager_dispatch(struct plugin_manager *plug_mgr, struct stellar_event *event)
 {
-	assert(event);
-	struct stellar_session_event_data *event_data = event->session_event_data;
-	assert(event_data);
-	session_event_type type = event_data->type;
+	const struct stellar_session *seesion = stellar_event_get_session(event);
+	struct session_plugin_ctx *plug_ctx = stellar_event_get_plugin_ctx(event);
+	enum session_event_type event_type = stellar_event_get_type(event);
+	const char *session_name = stellar_event_get_session_name(event);
+	struct stellar_packet *packet = stellar_event_get_packet(event);
+	uint16_t payload_len = stellar_event_get_payload_length(event);
+	const char *payload = stellar_event_get_payload(event);
 
-	switch (type)
+	assert(seesion);
+	assert(session_name);
+
+	// the same session may trigger multi times opening events
+	if (event_type & SESSION_EVENT_OPENING)
 	{
-	case SESSION_EVENT_OPENING:
-		plugin_manager_handle_opening_event(plug_mgr, event);
-		break;
-	case SESSION_EVENT_RAWPKT: /* fall through */
-	case SESSION_EVENT_ORDPKT: /* fall through */
-	case SESSION_EVENT_META:   /* fall through */
-		plugin_manager_handle_data_event(plug_mgr, event);
-		break;
-	case SESSION_EVENT_CLOSING:
-		plugin_manager_handle_closing_event(plug_mgr, event);
-		break;
-	default:
-		// TODO log error
-		break;
+		if (plug_ctx == NULL)
+		{
+			plug_ctx = plugin_manager_create_plugin_ctx(plug_mgr, session_name);
+			if (plug_ctx == NULL)
+			{
+				plugin_manager_log(ERROR, "can't create runtime plugin ctx for session '%s', Please check whether the callback is registered in the current session");
+				return;
+			}
+			stellar_event_set_plugin_ctx(event, plug_ctx);
+		}
 	}
-}
\ No newline at end of file
+
+	if (plug_ctx)
+	{
+		for (int i = 0; i < plug_ctx->eventcb_num; i++)
+		{
+			plug_ctx->current_plugin_index = i;
+			struct eventcb_runtime *runtime = &plug_ctx->eventcbs[i];
+			if (runtime->skip)
+			{
+				continue;
+			}
+
+			if (runtime->event & event_type)
+			{
+				runtime->cb(seesion, event_type, packet, payload, payload_len, &runtime->cb_args);
+			}
+		}
+	}
+	else
+	{
+		plugin_manager_log(ERROR, "session '%s' runtime plugin ctx is null when running event callback", session_name);
+		abort();
+	}
+
+	if (event_type & SESSION_EVENT_CLOSING)
+	{
+		plugin_manager_destory_plugin_ctx(plug_ctx);
+		stellar_event_set_plugin_ctx(event, NULL);
+	}
+}
+
+/******************************************************************************
+ * Suppport LUA plugins
+ ******************************************************************************/
+
+// TODO
\ No newline at end of file
diff --git a/src/plugin_manager/plugin_manager.h b/src/plugin_manager/plugin_manager.h
index f6a12a3..4e96b06 100644
--- a/src/plugin_manager/plugin_manager.h
+++ b/src/plugin_manager/plugin_manager.h
@@ -1,11 +1,7 @@
-
 #pragma once
 
 #include "sdk/include/session.h"
 
-#define MAX_PLUGIN_NUM 256
-
-struct per_session_event_cbs;
 struct plugin_manager;
 
 struct plugin_manager *plugin_manager_create();
@@ -13,8 +9,8 @@ void plugin_manager_destory(struct plugin_manager *plug_mgr);
 
 // return  0: success
 // return -1: error
-int plugin_manager_load(struct plugin_manager *plug_mgr, const char *plugin_file);
+int plugin_manager_load(struct plugin_manager *plug_mgr, const char *prefix, const char *file);
 void plugin_manager_unload(struct plugin_manager *plug_mgr);
 
-int plugin_manager_register(struct plugin_manager *plug_mgr, const char *session_type, fn_session_event_callback *callback);
+int plugin_manager_register(struct plugin_manager *plug_mgr, const char *session_name, enum session_event_type event, fn_session_event_callback *callback);
 void plugin_manager_dispatch(struct plugin_manager *plug_mgr, struct stellar_event *event);
\ No newline at end of file
diff --git a/src/plugin_manager/plugin_manager_config.cpp b/src/plugin_manager/plugin_manager_config.cpp
new file mode 100644
index 0000000..f36512c
--- /dev/null
+++ b/src/plugin_manager/plugin_manager_config.cpp
@@ -0,0 +1,358 @@
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "toml/toml.h"
+#include "sdk/include/session.h"
+#include "plugin_manager_util.h"
+#include "plugin_manager_config.h"
+
+struct event_type_map
+{
+    const char *type_str;
+    enum session_event_type type_int;
+};
+
+static struct event_type_map evtype_map[] =
+    {
+        {"SESSION_EVENT_OPENING", SESSION_EVENT_OPENING},
+        {"SESSION_EVENT_RAWPKT", SESSION_EVENT_RAWPKT},
+        {"SESSION_EVENT_ORDPKT", SESSION_EVENT_ORDPKT},
+        {"SESSION_EVENT_META", SESSION_EVENT_META},
+        {"SESSION_EVENT_CLOSING", SESSION_EVENT_CLOSING},
+        {"SESSION_EVENT_ALL", SESSION_EVENT_ALL},
+};
+
+/******************************************************************************
+ * Private API (For Event Type)
+ ******************************************************************************/
+
+static enum session_event_type event_type_str2int(const char *evtype_str)
+{
+    int num = sizeof(evtype_map) / sizeof(evtype_map[0]);
+
+    for (int i = 0; i < num; i++)
+    {
+        if (strcmp(evtype_str, evtype_map[i].type_str) == 0)
+        {
+            return evtype_map[i].type_int;
+        }
+    }
+
+    return SESSION_EVENT_UNKNOWN;
+}
+
+static void event_type_int2str(enum session_event_type evtype_int, char *buffer, int size)
+{
+    int used = 0;
+    int num = sizeof(evtype_map) / sizeof(evtype_map[0]);
+
+    for (int i = 0; i < num; i++)
+    {
+        if (evtype_map[i].type_int & evtype_int)
+        {
+            if (evtype_map[i].type_int == SESSION_EVENT_ALL && evtype_int != SESSION_EVENT_ALL)
+            {
+                continue;
+            }
+            used += snprintf(buffer + used, size - used, "%s ", evtype_map[i].type_str);
+        }
+    }
+}
+
+/******************************************************************************
+ * Private API (For Parse)
+ ******************************************************************************/
+
+static int toml_parse_string(toml_table_t *table, const char *string_key, const char *file, char **out)
+{
+    toml_datum_t string_val = toml_string_in(table, string_key);
+    if (!string_val.ok)
+    {
+        plugin_manager_log(ERROR, "can't find '%s' configuration iterm in %s", string_key, file);
+        return -1;
+    }
+
+    if (strlen(string_val.u.s) <= 0)
+    {
+        plugin_manager_log(ERROR, "invalid value for '%s' configuration item in %s", string_key, file);
+        safe_free(string_val.u.s);
+        return -1;
+    }
+
+    *out = safe_dup(string_val.u.s);
+    safe_free(string_val.u.s);
+
+    return 0;
+}
+
+static int toml_parse_table(toml_table_t *table, const char *string_key, const char *file, toml_table_t **out)
+{
+    *out = toml_table_in(table, string_key);
+    if (*out == NULL)
+    {
+        plugin_manager_log(ERROR, "can't find '%s' section in %s", string_key, file);
+        return -1;
+    }
+
+    return 0;
+}
+
+static int toml_parse_plugin_section(toml_table_t *root, struct plugin_manager_config *config, const char *file)
+{
+    toml_table_t *plugin_section = NULL;
+
+    if (toml_parse_table(root, "PLUGINFO", file, &plugin_section) == -1)
+    {
+        return -1;
+    }
+
+    if (toml_parse_string(plugin_section, "INIT_FUNC", file, &config->plugin_section.init_func_name) == -1)
+    {
+        return -1;
+    }
+
+    if (toml_parse_string(plugin_section, "EXIT_FUNC", file, &config->plugin_section.exit_func_name) == -1)
+    {
+        return -1;
+    }
+
+    if (toml_parse_string(plugin_section, "LIBRARY_PATH", file, &config->plugin_section.lib_path) == -1)
+    {
+        return -1;
+    }
+
+    return 0;
+}
+
+static int toml_parse_session_section(toml_table_t *root, struct plugin_manager_config *config, const char *file)
+{
+    toml_table_t *session_section = NULL;
+    toml_table_t *sub_session_section = NULL;
+    const char *session_name = NULL;
+    toml_array_t *event_type_array = NULL;
+    toml_datum_t type_str;
+    enum session_event_type type_int;
+
+    if (toml_parse_table(root, "SESSION_NAME", file, &session_section) == -1)
+    {
+        return -1;
+    }
+
+    for (int i = 0; i < toml_table_ntab(session_section); i++)
+    {
+        session_name = NULL;
+        sub_session_section = NULL;
+        event_type_array = NULL;
+
+        config->session_section = (struct session_section_config *)realloc(config->session_section, sizeof(struct session_section_config) * (config->session_section_num + 1));
+        config->session_section[config->session_section_num].event = SESSION_EVENT_UNKNOWN;
+        config->session_section[config->session_section_num].cb_func_name = NULL;
+        memset(config->session_section[config->session_section_num].session_name, 0, MAX_SESSION_NAME_LENGTH);
+
+        // parse session name
+        session_name = toml_key_in(session_section, i);
+        int session_name_len = strlen(session_name);
+        if (session_name_len <= 0)
+        {
+            plugin_manager_log(ERROR, "invalid value for 'SESSION_NAME' configuration item in %s", file);
+            return -1;
+        }
+        if (session_name_len > MAX_SESSION_NAME_LENGTH)
+        {
+            plugin_manager_log(ERROR, "invalid value for 'SESSION_NAME' configuration item in %s, '%s' is too long and exceeds %d bytes", file, session_name, MAX_SESSION_NAME_LENGTH);
+            return -1;
+        }
+        if (toml_parse_table(session_section, session_name, file, &sub_session_section) == -1)
+        {
+            return -1;
+        }
+        strncpy(config->session_section[config->session_section_num].session_name, session_name, session_name_len);
+
+        // parse session event callback
+        if (toml_parse_string(sub_session_section, "SESSION_EVENT_CALLBACK", file, &config->session_section[config->session_section_num].cb_func_name) == -1)
+        {
+            return -1;
+        }
+
+        event_type_array = toml_array_in(sub_session_section, "SESSION_EVENT_TYPE");
+        if (event_type_array == NULL)
+        {
+            plugin_manager_log(ERROR, "can't find 'SESSION_EVENT_TYPE' configuration iterm in '[SESSION_NAME.%s]' section of %s", session_name, file);
+            return -1;
+        }
+
+        for (int i = 0; i < toml_array_nelem(event_type_array); i++)
+        {
+            type_int = SESSION_EVENT_UNKNOWN;
+
+            type_str = toml_string_at(event_type_array, i);
+            if (!type_str.ok)
+            {
+                plugin_manager_log(ERROR, "can't parse 'SESSION_EVENT_TYPE' configuration iterm in '[SESSION_NAME.%s]' section of %s", session_name, file);
+                return -1;
+            }
+
+            type_int = event_type_str2int(type_str.u.s);
+            if (type_int == SESSION_EVENT_UNKNOWN)
+            {
+                plugin_manager_log(ERROR, "invalid value '%s' for 'SESSION_EVENT_TYPE' configuration item in '[SESSION_NAME.%s]' section of %s", type_str.u.s, session_name, file);
+                safe_free(type_str.u.s);
+                return -1;
+            }
+
+            (config->session_section[config->session_section_num].event) = (enum session_event_type)((config->session_section[config->session_section_num].event) | type_int);
+            safe_free(type_str.u.s);
+        }
+
+        config->session_section_num++;
+    }
+
+    return 0;
+}
+
+/******************************************************************************
+ * Public API
+ ******************************************************************************/
+
+struct plugin_manager_config *plugin_mangager_config_create()
+{
+    struct plugin_manager_config *config = safe_alloc(struct plugin_manager_config, 1);
+
+    config->prefix_path = NULL;
+    config->file_path = NULL;
+    config->session_section_num = 0;
+    config->session_section = NULL;
+    config->plugin_section.init_func_name = NULL;
+    config->plugin_section.exit_func_name = NULL;
+    config->plugin_section.lib_path = NULL;
+
+    return config;
+}
+
+void plugin_mangager_config_destory(struct plugin_manager_config *config)
+{
+    if (config)
+    {
+        safe_free(config->prefix_path);
+        safe_free(config->file_path);
+
+        safe_free(config->plugin_section.init_func_name);
+        safe_free(config->plugin_section.exit_func_name);
+        safe_free(config->plugin_section.lib_path);
+
+        if (config->session_section)
+        {
+            for (int i = 0; i < config->session_section_num; i++)
+            {
+                struct session_section_config *temp = &config->session_section[i];
+                safe_free(temp->cb_func_name);
+            }
+            config->session_section_num = 0;
+            safe_free(config->session_section);
+        }
+
+        safe_free(config);
+    }
+}
+
+void plugin_mangager_config_dump(struct plugin_manager_config *config)
+{
+    if (config)
+    {
+        plugin_manager_log(DEBUG, "[CONFIG_PREFIX] : %s", config->prefix_path);
+        plugin_manager_log(DEBUG, "[CONFIG_FILE] : %s", config->file_path);
+        plugin_manager_log(DEBUG, "[PLUGINFO]->INIT_FUNC : %s", config->plugin_section.init_func_name);
+        plugin_manager_log(DEBUG, "[PLUGINFO]->EXIT_FUNC : %s", config->plugin_section.exit_func_name);
+        plugin_manager_log(DEBUG, "[PLUGINFO]->LIBRARY_PATH : %s", config->plugin_section.lib_path);
+
+        if (config->session_section)
+        {
+            for (int i = 0; i < config->session_section_num; i++)
+            {
+                char tmp_buffer[1024] = {0};
+                struct session_section_config *temp = &config->session_section[i];
+                event_type_int2str(temp->event, tmp_buffer, 1024);
+                plugin_manager_log(DEBUG, "[SESSION_NAME.%s]->SESSION_EVENT_TYPE : %d, %s", temp->session_name, temp->event, tmp_buffer);
+                plugin_manager_log(DEBUG, "[SESSION_NAME.%s]->SESSION_EVENT_CALLBACK : %s", temp->session_name, temp->cb_func_name);
+            }
+        }
+    }
+}
+
+int plugin_mangager_config_parse(struct plugin_manager_config *config, const char *prefix, const char *file)
+{
+    FILE *fp = NULL;
+    toml_table_t *root = NULL;
+    char errbuf[200] = {0};
+    char tmp_buffer[4096] = {0};
+
+    config->prefix_path = safe_dup(prefix);
+    config->file_path = safe_dup(file);
+    strcat_prefix_and_file(prefix, file, tmp_buffer, sizeof(tmp_buffer));
+
+    fp = fopen(tmp_buffer, "r");
+    if (fp == NULL)
+    {
+        plugin_manager_log(ERROR, "can't open %s, %s", tmp_buffer, strerror(errno));
+        return -1;
+    }
+
+    root = toml_parse_file(fp, errbuf, sizeof(errbuf));
+    if (root == NULL)
+    {
+        plugin_manager_log(ERROR, "toml parsing %s failed, %s", file, errbuf);
+        goto err;
+    }
+
+    if (toml_parse_plugin_section(root, config, file) == -1)
+    {
+        goto err;
+    }
+
+    if (toml_parse_session_section(root, config, file) == -1)
+    {
+        goto err;
+    }
+
+    toml_free(root);
+    fclose(fp);
+
+    return 0;
+
+err:
+    if (root)
+    {
+        toml_free(root);
+    }
+
+    if (fp)
+    {
+        fclose(fp);
+        fp = NULL;
+    }
+
+    return -1;
+}
+
+/******************************************************************************
+ * Test
+ ******************************************************************************/
+
+#ifdef PLUGIN_MANAGER_TEST
+int main(int argc, char *argv[])
+{
+    struct plugin_manager_config *config = plugin_mangager_config_create();
+
+    if (plugin_mangager_config_parse(config, argv[1], argv[2]) == -1)
+    {
+        plugin_manager_log(ERROR, "can't parser %s %s", argv[1], argv[2]);
+    }
+
+    plugin_mangager_config_dump(config);
+
+    plugin_mangager_config_destory(config);
+
+    return 0;
+}
+#endif
\ No newline at end of file
diff --git a/src/plugin_manager/plugin_manager_config.h b/src/plugin_manager/plugin_manager_config.h
new file mode 100644
index 0000000..fa9164d
--- /dev/null
+++ b/src/plugin_manager/plugin_manager_config.h
@@ -0,0 +1,34 @@
+#pragma once
+
+#include "plugin_manager_util.h"
+#include "sdk/include/session.h"
+
+struct session_section_config
+{
+    char session_name[MAX_SESSION_NAME_LENGTH];
+    char *cb_func_name;
+    enum session_event_type event;
+};
+
+struct plugin_section_config
+{
+    char *init_func_name;
+    char *exit_func_name;
+    char *lib_path;
+};
+
+struct plugin_manager_config
+{
+    char *prefix_path; // absolute path to stellar installation
+    char *file_path;   // relative path to stellar installation
+
+    int session_section_num;
+    struct session_section_config *session_section; // array
+    struct plugin_section_config plugin_section;
+};
+
+struct plugin_manager_config *plugin_mangager_config_create();
+void plugin_mangager_config_destory(struct plugin_manager_config *config);
+
+int plugin_mangager_config_parse(struct plugin_manager_config *config, const char *prefix, const char *file);
+void plugin_mangager_config_dump(struct plugin_manager_config *config);
\ No newline at end of file
diff --git a/src/plugin_manager/plugin_manager_module.cpp b/src/plugin_manager/plugin_manager_module.cpp
new file mode 100644
index 0000000..1e3011b
--- /dev/null
+++ b/src/plugin_manager/plugin_manager_module.cpp
@@ -0,0 +1,168 @@
+#include <time.h>
+#include <dlfcn.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "sdk/include/plugin.h"
+#include "plugin_manager_util.h"
+#include "plugin_manager_config.h"
+#include "plugin_manager.h"
+
+struct plugin_manager_module_evcb
+{
+    char session_name[MAX_SESSION_NAME_LENGTH];
+    fn_session_event_callback *event_cb_ptr;
+    enum session_event_type event;
+};
+
+struct plugin_manager_module
+{
+    char *prefix;
+    char *lib_path;
+    void *dl_handle;
+
+    plugin_init_callback *init_cb_ptr;
+    plugin_exit_callback *exit_cb_ptr;
+
+    struct plugin_manager_module_evcb *evcbs;
+    int evcbs_num;
+};
+
+void plugin_manager_module_close(struct plugin_manager_module *module)
+{
+    if (module)
+    {
+        if (module->exit_cb_ptr)
+        {
+            module->exit_cb_ptr();
+        }
+
+        if (module->dl_handle)
+        {
+            dlclose(module->dl_handle);
+            module->dl_handle = NULL;
+        }
+
+        safe_free(module->prefix);
+        safe_free(module->lib_path);
+        safe_free(module->evcbs);
+        module->evcbs_num = 0;
+
+        safe_free(module);
+    }
+}
+
+struct plugin_manager_module *plugin_manager_module_open(struct plugin_manager_config *config)
+{
+    if (config == NULL)
+    {
+        return NULL;
+    }
+
+    char dynamic_lib_path[4096] = {0};
+    struct plugin_manager_module *module = safe_alloc(struct plugin_manager_module, 1);
+
+    module->prefix = safe_dup(config->prefix_path);
+    module->lib_path = safe_dup(config->plugin_section.lib_path);
+    strcat_prefix_and_file(module->prefix, module->lib_path, dynamic_lib_path, sizeof(dynamic_lib_path));
+
+    module->evcbs_num = 0;
+    module->dl_handle = dlopen(dynamic_lib_path, RTLD_LAZY | RTLD_GLOBAL | RTLD_DEEPBIND);
+    if (module->dl_handle == NULL)
+    {
+        plugin_manager_log(ERROR, "can't dlopen %s, %s", dynamic_lib_path, dlerror());
+        goto err;
+    }
+
+    module->init_cb_ptr = (plugin_init_callback *)(dlsym(module->dl_handle, config->plugin_section.init_func_name));
+    if (module->init_cb_ptr == NULL)
+    {
+        plugin_manager_log(ERROR, "can't find symbol name of '%s' in dynamic library %s, %s",
+                           config->plugin_section.init_func_name, dynamic_lib_path, dlerror());
+        goto err;
+    }
+
+    module->exit_cb_ptr = (plugin_exit_callback *)(dlsym(module->dl_handle, config->plugin_section.exit_func_name));
+    if (module->exit_cb_ptr == NULL)
+    {
+        plugin_manager_log(ERROR, "can't find symbol name of '%s' in dynamic library %s, %s",
+                           config->plugin_section.exit_func_name, dynamic_lib_path, dlerror());
+        goto err;
+    }
+
+    if (config->session_section)
+    {
+        module->evcbs = safe_alloc(struct plugin_manager_module_evcb, config->session_section_num);
+        module->evcbs_num = config->session_section_num;
+
+        for (int i = 0; i < config->session_section_num; i++)
+        {
+            struct session_section_config *session_config = &config->session_section[i];
+            struct plugin_manager_module_evcb *event_cb = &module->evcbs[i];
+
+            strncpy(event_cb->session_name, session_config->session_name, strlen(session_config->session_name));
+            event_cb->event = session_config->event;
+            event_cb->event_cb_ptr = (fn_session_event_callback *)(dlsym(module->dl_handle, session_config->cb_func_name));
+            if (event_cb->event_cb_ptr == NULL)
+            {
+                plugin_manager_log(ERROR, "can't find symbol name of '%s' in dynamic library %s, %s",
+                                   session_config->cb_func_name, dynamic_lib_path, dlerror());
+                goto err;
+            }
+        }
+    }
+
+    return module;
+
+err:
+    plugin_manager_module_close(module);
+
+    return NULL;
+}
+
+int plugin_manager_module_register(struct plugin_manager *plug_mgr, struct plugin_manager_module *module)
+{
+    if (module && module->evcbs)
+    {
+        for (int i = 0; i < module->evcbs_num; i++)
+        {
+            struct plugin_manager_module_evcb *event_cb = &module->evcbs[i];
+
+            if (plugin_manager_register(plug_mgr, event_cb->session_name, event_cb->event, event_cb->event_cb_ptr) == -1)
+            {
+                plugin_manager_log(ERROR, "dynamic library '%s' failed to register the event callback function of session '%s'", module->lib_path, event_cb->session_name);
+                return -1;
+            }
+        }
+    }
+
+    return 0;
+}
+
+int plugin_manager_module_init(struct plugin_manager_module *module)
+{
+    struct timespec start;
+    struct timespec end;
+
+    clock_gettime(CLOCK_MONOTONIC, &start);
+    int ret = module->init_cb_ptr();
+    if (ret == -1)
+    {
+        plugin_manager_log(ERROR, "dynamic library '%s' initialization failed", module->lib_path);
+        return -1;
+    }
+    clock_gettime(CLOCK_MONOTONIC, &end);
+
+    long elapsed = (end.tv_sec - start.tv_sec) * 1000000 + (end.tv_nsec - start.tv_nsec) / 1000;
+    plugin_manager_log(INFO, "plugin '%s' init success, using '%lld' us", module->lib_path, elapsed);
+
+    return 0;
+}
+
+void plugin_manager_module_exit(struct plugin_manager_module *module)
+{
+    if (module && module->exit_cb_ptr)
+    {
+        module->exit_cb_ptr();
+    }
+}
diff --git a/src/plugin_manager/plugin_manager_module.h b/src/plugin_manager/plugin_manager_module.h
new file mode 100644
index 0000000..d765b4a
--- /dev/null
+++ b/src/plugin_manager/plugin_manager_module.h
@@ -0,0 +1,12 @@
+#pragma once
+
+#include "plugin_manager_config.h"
+
+struct plugin_manager_module;
+
+struct plugin_manager_module *plugin_manager_module_open(struct plugin_manager_config *config);
+int plugin_manager_module_register(struct plugin_manager *plug_mgr, struct plugin_manager_module *module);
+int plugin_manager_module_init(struct plugin_manager_module *module);
+
+void plugin_manager_module_exit(struct plugin_manager_module *module);
+void plugin_manager_module_close(struct plugin_manager_module *module);
\ No newline at end of file
diff --git a/src/plugin_manager/plugin_manager_util.cpp b/src/plugin_manager/plugin_manager_util.cpp
new file mode 100644
index 0000000..1c4337d
--- /dev/null
+++ b/src/plugin_manager/plugin_manager_util.cpp
@@ -0,0 +1,40 @@
+#include <string.h>
+#include <stdlib.h>
+
+#include "plugin_manager_util.h"
+
+char *safe_dup(const char *str)
+{
+	if (str == NULL)
+	{
+		return NULL;
+	}
+
+	char *dup = safe_alloc(char, strlen(str) + 1);
+	memcpy(dup, str, strlen(str));
+
+	return dup;
+}
+
+void strcat_prefix_and_file(const char *prefix, const char *file, char *buff, int size)
+{
+	char prefix_buffer[4096] = {0};
+	char file_buffer[4096] = {0};
+	char *ptr = NULL;
+
+	memcpy(prefix_buffer, prefix, strlen(prefix));
+	memcpy(file_buffer, file, strlen(file));
+
+	if (prefix_buffer[strlen(prefix_buffer) - 1] != '/')
+	{
+		prefix_buffer[strlen(prefix_buffer)] = '/';
+	}
+	file_buffer[strcspn(file_buffer, "\r\n")] = 0;
+
+	ptr = file_buffer;
+	if (file_buffer[0] == '.' && file_buffer[1] == '/')
+	{
+		ptr += 2;
+	}
+	snprintf(buff, size, "%s%s", prefix_buffer, ptr);
+}
\ No newline at end of file
diff --git a/src/plugin_manager/plugin_manager_util.h b/src/plugin_manager/plugin_manager_util.h
new file mode 100644
index 0000000..9c6c0fb
--- /dev/null
+++ b/src/plugin_manager/plugin_manager_util.h
@@ -0,0 +1,61 @@
+#pragma once
+
+#include <stdio.h>
+
+#define MAX_PLUGIN_NUM 512
+#define MAX_SESSION_NAME_LENGTH 32
+
+/******************************************************************************
+ * Malloc
+ ******************************************************************************/
+
+#define safe_alloc(type, number) ((type *)calloc(number, sizeof(type)))
+
+#define safe_free(ptr)  \
+    {                   \
+        if (ptr)        \
+        {               \
+            free(ptr);  \
+            ptr = NULL; \
+        }               \
+    }
+
+char *safe_dup(const char *str);
+
+/******************************************************************************
+ * Logger
+ ******************************************************************************/
+
+enum plugin_manager_log_level
+{
+    DEBUG = 0x11,
+    INFO = 0x12,
+    ERROR = 0x13,
+};
+
+#ifndef plugin_manager_log
+#define plugin_manager_log(level, format, ...)                                     \
+    {                                                                              \
+        switch (level)                                                             \
+        {                                                                          \
+        case DEBUG:                                                                \
+            fprintf(stdout, "PLUGIN_MANAGER [DEBUG] " format "\n", ##__VA_ARGS__); \
+            fflush(stdout);                                                        \
+            break;                                                                 \
+        case INFO:                                                                 \
+            fprintf(stdout, "PLUGIN_MANAGER [INFO] " format "\n", ##__VA_ARGS__);  \
+            fflush(stdout);                                                        \
+            break;                                                                 \
+        case ERROR:                                                                \
+            fprintf(stderr, "PLUGIN_MANAGER [ERROR] " format "\n", ##__VA_ARGS__); \
+            fflush(stderr);                                                        \
+            break;                                                                 \
+        }                                                                          \
+    }
+#endif
+
+/******************************************************************************
+ * Str
+ ******************************************************************************/
+
+void strcat_prefix_and_file(const char *prefix, const char *file, char *buff, int size);
diff --git a/src/plugin_manager/test/CMakeLists.txt b/src/plugin_manager/test/CMakeLists.txt
new file mode 100644
index 0000000..7a1a880
--- /dev/null
+++ b/src/plugin_manager/test/CMakeLists.txt
@@ -0,0 +1,18 @@
+add_executable(gtest_plugin_manager
+  gtest_plugin_manager.cpp
+)
+
+target_link_libraries(
+  gtest_plugin_manager
+  gtest_main
+  plugin_manager
+  session_manager
+  toml
+  dl
+)
+
+include(GoogleTest)
+gtest_discover_tests(gtest_plugin_manager)
+
+add_subdirectory(test_plugins/plugins_library)
+file(COPY test_plugins/plugins_config DESTINATION ./)
\ No newline at end of file
diff --git a/src/plugin_manager/test/gtest_plugin_manager.cpp b/src/plugin_manager/test/gtest_plugin_manager.cpp
new file mode 100644
index 0000000..8107b41
--- /dev/null
+++ b/src/plugin_manager/test/gtest_plugin_manager.cpp
@@ -0,0 +1,159 @@
+#include <gtest/gtest.h>
+
+#include "../plugin_manager_config.h"
+#include "../plugin_manager.h"
+#include "session_manager.h"
+
+TEST(PLUGIN_MANAGER_TEST, plugin_manager_config_HTTP)
+{
+	char prefix_path[] = "./";
+	char file_path[] = "./plugins_config/http_event_plugin/http_event_plugin.inf";
+
+	struct plugin_manager_config *config = plugin_mangager_config_create();
+	EXPECT_TRUE(config != nullptr);
+
+	EXPECT_TRUE(plugin_mangager_config_parse(config, prefix_path, file_path) == 0);
+
+	EXPECT_STREQ(config->prefix_path, "./");
+	EXPECT_STREQ(config->file_path, "./plugins_config/http_event_plugin/http_event_plugin.inf");
+	EXPECT_STREQ(config->plugin_section.init_func_name, "http_event_plugin_init");
+	EXPECT_STREQ(config->plugin_section.exit_func_name, "http_event_plugin_exit");
+	EXPECT_STREQ(config->plugin_section.lib_path, "./test_plugins/plugins_library/http_event_plugin_test.so");
+
+	EXPECT_TRUE(config->session_section_num == 1);
+	EXPECT_STREQ(config->session_section[0].session_name, "HTTP");
+	EXPECT_STREQ(config->session_section[0].cb_func_name, "http_event_plugin_entry");
+	EXPECT_TRUE(config->session_section[0].event == (0x01 << 1 | 0x01 << 2 | 0x01 << 3 | 0x01 << 4 | 0x01 << 5));
+
+	plugin_mangager_config_dump(config);
+	plugin_mangager_config_destory(config);
+}
+
+TEST(PLUGIN_MANAGER_TEST, plugin_manager_config_CUSTOM)
+{
+	char prefix_path[] = "./";
+	char file_path[] = "./plugins_config/custom_event_plugin/custom_event_plugin.inf";
+
+	struct plugin_manager_config *config = plugin_mangager_config_create();
+	EXPECT_TRUE(config != nullptr);
+
+	EXPECT_TRUE(plugin_mangager_config_parse(config, prefix_path, file_path) == 0);
+
+	EXPECT_STREQ(config->prefix_path, "./");
+	EXPECT_STREQ(config->file_path, "./plugins_config/custom_event_plugin/custom_event_plugin.inf");
+	EXPECT_STREQ(config->plugin_section.init_func_name, "custom_plugin_init");
+	EXPECT_STREQ(config->plugin_section.exit_func_name, "custom_plugin_exit");
+	EXPECT_STREQ(config->plugin_section.lib_path, "./test_plugins/plugins_library/custom_event_plugin_test.so");
+
+	EXPECT_TRUE(config->session_section_num == 2);
+	EXPECT_STREQ(config->session_section[0].session_name, "TCP");
+	EXPECT_STREQ(config->session_section[0].cb_func_name, "custom_plugin_tcp_entry");
+	EXPECT_TRUE(config->session_section[0].event == (0x01 << 1 | 0x01 << 2 | 0x01 << 3 | 0x01 << 4 | 0x01 << 5));
+	EXPECT_STREQ(config->session_section[1].session_name, "CUSTOM");
+	EXPECT_STREQ(config->session_section[1].cb_func_name, "custom_plugin_custom_entry");
+	EXPECT_TRUE(config->session_section[1].event == (0x01 << 1) | (0x01 << 3) | (0x01 << 5));
+
+	plugin_mangager_config_dump(config);
+	plugin_mangager_config_destory(config);
+}
+
+TEST(PLUGIN_MANAGER_TEST, plugin_manager_load)
+{
+	char prefix_path[] = "./";
+	char file_path[] = "./plugins_config/plugins.inf";
+
+	struct plugin_manager *plug_mgr = plugin_manager_create();
+	EXPECT_TRUE(plug_mgr != nullptr);
+	EXPECT_TRUE(plugin_manager_load(plug_mgr, prefix_path, file_path) == 0);
+
+	plugin_manager_unload(plug_mgr);
+	plugin_manager_destory(plug_mgr);
+}
+
+TEST(PLUGIN_MANAGER_TEST, plugin_manager_dispatch_HTTP)
+{
+	char prefix_path[] = "./";
+	char file_path[] = "./plugins_config/plugins.inf";
+
+	const char *session_name = "HTTP";
+	struct stellar_session session;
+	session.name = session_name;
+	struct stellar_session_event_data event_data;
+	event_data.s = &session;
+	event_data.plugin_ctx = NULL; // must be init to NULL
+	struct stellar_event event;
+	event.session_event_data = &event_data;
+
+	struct plugin_manager *plug_mgr = plugin_manager_create();
+	EXPECT_TRUE(plug_mgr != nullptr);
+	EXPECT_TRUE(plugin_manager_load(plug_mgr, prefix_path, file_path) == 0);
+
+	event_data.type = SESSION_EVENT_OPENING;
+	plugin_manager_dispatch(plug_mgr, &event);
+
+	event_data.type = SESSION_EVENT_RAWPKT;
+	plugin_manager_dispatch(plug_mgr, &event);
+
+	event_data.type = SESSION_EVENT_ORDPKT;
+	plugin_manager_dispatch(plug_mgr, &event);
+
+	event_data.type = SESSION_EVENT_META;
+	plugin_manager_dispatch(plug_mgr, &event);
+
+	event_data.type = SESSION_EVENT_CLOSING;
+	plugin_manager_dispatch(plug_mgr, &event);
+
+	event_data.type = SESSION_EVENT_ALL;
+	plugin_manager_dispatch(plug_mgr, &event);
+
+	plugin_manager_unload(plug_mgr);
+	plugin_manager_destory(plug_mgr);
+}
+
+TEST(PLUGIN_MANAGER_TEST, plugin_manager_dispatch_CUSTOM)
+{
+	char prefix_path[] = "./";
+	char file_path[] = "./plugins_config/plugins.inf";
+
+	const char *session_name = "CUSTOM";
+	struct stellar_session session;
+	session.name = session_name;
+	struct stellar_session_event_data event_data;
+	event_data.s = &session;
+	event_data.plugin_ctx = NULL; // must be init to NULL
+	struct stellar_event event;
+	event.session_event_data = &event_data;
+
+	struct plugin_manager *plug_mgr = plugin_manager_create();
+	EXPECT_TRUE(plug_mgr != nullptr);
+	EXPECT_TRUE(plugin_manager_load(plug_mgr, prefix_path, file_path) == 0);
+
+	event_data.type = SESSION_EVENT_OPENING;
+	plugin_manager_dispatch(plug_mgr, &event);
+
+	event_data.type = SESSION_EVENT_RAWPKT;
+	plugin_manager_dispatch(plug_mgr, &event);
+
+	event_data.type = SESSION_EVENT_ORDPKT;
+	plugin_manager_dispatch(plug_mgr, &event);
+
+	event_data.type = SESSION_EVENT_META;
+	plugin_manager_dispatch(plug_mgr, &event);
+
+	event_data.type = SESSION_EVENT_CLOSING;
+	plugin_manager_dispatch(plug_mgr, &event);
+
+	event_data.type = SESSION_EVENT_ALL;
+	plugin_manager_dispatch(plug_mgr, &event);
+
+	plugin_manager_unload(plug_mgr);
+	plugin_manager_destory(plug_mgr);
+}
+
+int main(int argc, char **argv)
+{
+	::testing::InitGoogleTest(&argc, argv);
+	int ret = RUN_ALL_TESTS();
+
+	return ret;
+}
\ No newline at end of file
diff --git a/src/plugin_manager/test/test_plugins/plugins_config/custom_event_plugin/custom_event_plugin.inf b/src/plugin_manager/test/test_plugins/plugins_config/custom_event_plugin/custom_event_plugin.inf
new file mode 100644
index 0000000..26ba914
--- /dev/null
+++ b/src/plugin_manager/test/test_plugins/plugins_config/custom_event_plugin/custom_event_plugin.inf
@@ -0,0 +1,14 @@
+[PLUGINFO]
+INIT_FUNC="custom_plugin_init"
+EXIT_FUNC="custom_plugin_exit"
+LIBRARY_PATH="./test_plugins/plugins_library/custom_event_plugin_test.so"
+
+# Support SESSION_EVENT_TYPE: "SESSION_EVENT_OPENING", "SESSION_EVENT_RAWPKT", "SESSION_EVENT_ORDPKT", "SESSION_EVENT_META", "SESSION_EVENT_CLOSING", "SESSION_EVENT_ALL"
+
+[SESSION_NAME.TCP]
+SESSION_EVENT_TYPE=["SESSION_EVENT_ALL"]
+SESSION_EVENT_CALLBACK="custom_plugin_tcp_entry"
+
+[SESSION_NAME.CUSTOM]
+SESSION_EVENT_TYPE=["SESSION_EVENT_OPENING","SESSION_EVENT_ORDPKT","SESSION_EVENT_CLOSING"]
+SESSION_EVENT_CALLBACK="custom_plugin_custom_entry"
\ No newline at end of file
diff --git a/src/plugin_manager/test/test_plugins/plugins_config/http_event_plugin/http_event_plugin.inf b/src/plugin_manager/test/test_plugins/plugins_config/http_event_plugin/http_event_plugin.inf
new file mode 100644
index 0000000..1dd124b
--- /dev/null
+++ b/src/plugin_manager/test/test_plugins/plugins_config/http_event_plugin/http_event_plugin.inf
@@ -0,0 +1,10 @@
+[PLUGINFO]
+INIT_FUNC="http_event_plugin_init"
+EXIT_FUNC="http_event_plugin_exit"
+LIBRARY_PATH="./test_plugins/plugins_library/http_event_plugin_test.so"
+
+# Support SESSION_EVENT_TYPE: "SESSION_EVENT_OPENING", "SESSION_EVENT_RAWPKT", "SESSION_EVENT_ORDPKT", "SESSION_EVENT_META", "SESSION_EVENT_CLOSING", "SESSION_EVENT_ALL"
+
+[SESSION_NAME.HTTP]
+SESSION_EVENT_TYPE=["SESSION_EVENT_ALL"]
+SESSION_EVENT_CALLBACK="http_event_plugin_entry"
\ No newline at end of file
diff --git a/src/plugin_manager/test/test_plugins/plugins_config/plugins.inf b/src/plugin_manager/test/test_plugins/plugins_config/plugins.inf
new file mode 100644
index 0000000..9382f91
--- /dev/null
+++ b/src/plugin_manager/test/test_plugins/plugins_config/plugins.inf
@@ -0,0 +1,4 @@
+# Relative path, relative to the installation path of stellar
+
+./plugins_config/http_event_plugin/http_event_plugin.inf
+./plugins_config/custom_event_plugin/custom_event_plugin.inf
\ No newline at end of file
diff --git a/src/plugin_manager/test/test_plugins/plugins_library/CMakeLists.txt b/src/plugin_manager/test/test_plugins/plugins_library/CMakeLists.txt
new file mode 100644
index 0000000..df47c82
--- /dev/null
+++ b/src/plugin_manager/test/test_plugins/plugins_library/CMakeLists.txt
@@ -0,0 +1,9 @@
+add_library(custom_event_plugin_test SHARED
+	custom_event_plugin.cpp
+)
+set_target_properties(custom_event_plugin_test PROPERTIES PREFIX "")
+
+add_library(http_event_plugin_test SHARED
+	http_event_plugin.cpp
+)
+set_target_properties(http_event_plugin_test PROPERTIES PREFIX "")
\ No newline at end of file
diff --git a/src/plugin_manager/test/test_plugins/plugins_library/custom_event_plugin.cpp b/src/plugin_manager/test/test_plugins/plugins_library/custom_event_plugin.cpp
new file mode 100644
index 0000000..0d7f1c4
--- /dev/null
+++ b/src/plugin_manager/test/test_plugins/plugins_library/custom_event_plugin.cpp
@@ -0,0 +1,58 @@
+#include "session.h"
+#include "packet.h"
+#include "plugin.h"
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+static char *g_handler = NULL;
+
+static void *custom_decode(const char *payload, uint16_t len, void **pme)
+{
+	return NULL;
+}
+
+extern "C" void custom_plugin_tcp_entry(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
+{
+	char **per_session_pme = (char **)pme;
+
+	printf("RUN custom_plugin_tcp_entry, event: %d\n", event);
+
+	struct stellar_session_event_extras *info = (struct stellar_session_event_extras *)custom_decode(payload, len, pme);
+	struct stellar_session *new_session = session_manager_session_derive(s, "CUSTOM");
+
+	session_manager_trigger_event(new_session, SESSION_EVENT_OPENING, info);
+	session_manager_trigger_event(new_session, SESSION_EVENT_META, info);
+}
+
+extern "C" void custom_plugin_custom_entry(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
+{
+	char **per_session_pme = (char **)pme;
+
+	printf("RUN custom_plugin_custom_entry, event: %d\n", event);
+}
+
+extern "C" int custom_plugin_init(void)
+{
+	printf("RUN custom_plugin_init\n");
+
+	if (g_handler == NULL)
+	{
+		g_handler = (char *)malloc(1024);
+		snprintf(g_handler, 1024, "222222");
+	}
+
+	return 0;
+}
+
+extern "C" void custom_plugin_exit(void)
+{
+	printf("RUN custom_plugin_exit\n");
+
+	if (g_handler)
+	{
+		free(g_handler);
+		g_handler = NULL;
+	}
+}
\ No newline at end of file
diff --git a/src/plugin_manager/test/test_plugins/plugins_library/http_event_plugin.cpp b/src/plugin_manager/test/test_plugins/plugins_library/http_event_plugin.cpp
new file mode 100644
index 0000000..e41d8b6
--- /dev/null
+++ b/src/plugin_manager/test/test_plugins/plugins_library/http_event_plugin.cpp
@@ -0,0 +1,82 @@
+#include "session.h"
+#include "packet.h"
+#include "plugin.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+
+static char *g_handler = NULL;
+
+struct per_session_pme_info
+{
+	int flag;
+	char data[16];
+};
+
+extern "C" void http_event_plugin_entry(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
+{
+	struct per_session_pme_info **per_session_pme = (struct per_session_pme_info **)pme;
+
+	printf("RUN http_event_plugin_entry, event: %d\n", event);
+
+	if (event & SESSION_EVENT_OPENING)
+	{
+		if (*per_session_pme == NULL)
+		{
+			struct per_session_pme_info *cur_ctx = (struct per_session_pme_info *)malloc(sizeof(struct per_session_pme_info));
+			snprintf(cur_ctx->data, 6, "******");
+			*per_session_pme = *&cur_ctx;
+			printf("http_event_plugin_entry->opening_handler\n");
+		}
+	}
+
+	if (event & SESSION_EVENT_RAWPKT)
+	{
+		printf("http_event_plugin_entry->rawpkt_handler\n");
+	}
+
+	if (event & SESSION_EVENT_ORDPKT)
+	{
+		printf("http_event_plugin_entry->ordpkt_handler\n");
+	}
+
+	if (event & SESSION_EVENT_META)
+	{
+		printf("http_event_plugin_entry->meta_handler\n");
+	}
+
+	if (event & SESSION_EVENT_CLOSING)
+	{
+		if (*per_session_pme)
+		{
+			printf("http_event_plugin_entry->closing_hanler\n");
+
+			free(*per_session_pme);
+			*per_session_pme = NULL;
+		}
+	}
+}
+
+extern "C" int http_event_plugin_init(void)
+{
+	printf("RUN http_event_plugin_init\n");
+
+	if (g_handler == NULL)
+	{
+		g_handler = (char *)malloc(1024);
+		snprintf(g_handler, 1024, "111111");
+	}
+
+	return 0;
+}
+
+extern "C" void http_event_plugin_exit(void)
+{
+	printf("RUN http_event_plugin_exit\n");
+
+	if (g_handler)
+	{
+		free(g_handler);
+		g_handler = NULL;
+	}
+}
\ No newline at end of file
diff --git a/src/protocol_decoder/http/http.cpp b/src/protocol_decoder/http/http.cpp
index 408f149..b3a9205 100644
--- a/src/protocol_decoder/http/http.cpp
+++ b/src/protocol_decoder/http/http.cpp
@@ -1,15 +1,10 @@
-#include "http.h"
-#include "session_manager.h"
+#include "sdk/include/session.h"
 
-void http_decoder(const struct stellar_session *s, int what, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
+void http_decoder(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
 {
 	struct stellar_session_event_extras *info;
-	struct stellar_session *new_session=session_manager_session_derive(s, "HTTP");
+	struct stellar_session *new_session = session_manager_session_derive(s, "HTTP");
+
 	session_manager_trigger_event(new_session, SESSION_EVENT_OPENING, info);
 	session_manager_trigger_event(new_session, SESSION_EVENT_META, info);
-}
-
-int http_peek(const struct stellar_session *s, const char *payload, uint32_t len)
-{
-	return 0;
 }
\ No newline at end of file
diff --git a/src/session_manager/session_manager.cpp b/src/session_manager/session_manager.cpp
index ab70071..7ea5643 100644
--- a/src/session_manager/session_manager.cpp
+++ b/src/session_manager/session_manager.cpp
@@ -1,8 +1,12 @@
+#include <stddef.h>
+
+#include "sdk/include/session.h"
 #include "session_manager.h"
 
 struct session_manager
 {
-	struct stellar_session **tcp_table, **udp_table;
+	struct stellar_session **tcp_table;
+	struct stellar_session **udp_table;
 };
 
 struct session_manager *session_manager_init()
@@ -10,16 +14,12 @@ struct session_manager *session_manager_init()
 	return nullptr;
 }
 
-
-void session_manager_trigger_event(struct stellar_session *s, 
-                                   enum session_event_type type,
-                                   struct stellar_session_event_extras *info)
+void session_manager_trigger_event(struct stellar_session *s, enum session_event_type type, struct stellar_session_event_extras *info)
 {
 	return;
 }
 
-struct stellar_session *session_manager_session_derive(const struct stellar_session *this_session, 
-                                               const char *new_session_type_name)
+struct stellar_session *session_manager_session_derive(const struct stellar_session *this_session, const char *session_name)
 {
 	return nullptr;
 }
@@ -29,8 +29,54 @@ struct stellar_event *session_manager_commit(struct session_manager *h, struct s
 	return nullptr;
 };
 
-
 struct stellar_event *session_manager_fetch_event(struct session_manager *h)
 {
 	return nullptr;
 }
+
+/******************************************************************************
+ * API: between stellar_event and plugin_manager
+ ******************************************************************************/
+
+struct session_plugin_ctx *stellar_event_get_plugin_ctx(struct stellar_event *event)
+{
+	return event->session_event_data->plugin_ctx;
+}
+
+void stellar_event_set_plugin_ctx(struct stellar_event *event, struct session_plugin_ctx *plugin_ctx)
+{
+	event->session_event_data->plugin_ctx = plugin_ctx;
+}
+
+enum session_event_type stellar_event_get_type(struct stellar_event *event)
+{
+	return event->session_event_data->type;
+}
+
+const char *stellar_event_get_session_name(struct stellar_event *event)
+{
+	return event->session_event_data->s->name;
+}
+
+const struct stellar_session *stellar_event_get_session(struct stellar_event *event)
+{
+	return event->session_event_data->s;
+}
+
+// TODO
+struct stellar_packet *stellar_event_get_packet(struct stellar_event *event)
+{
+	return NULL;
+}
+
+// TODO
+const char *stellar_event_get_payload(struct stellar_event *event)
+{
+	return NULL;
+}
+
+// TODO
+uint16_t stellar_event_get_payload_length(struct stellar_event *event)
+{
+	return 0;
+}
diff --git a/src/session_manager/session_manager.h b/src/session_manager/session_manager.h
index 6d17e79..1bef25f 100644
--- a/src/session_manager/session_manager.h
+++ b/src/session_manager/session_manager.h
@@ -2,8 +2,6 @@
 
 #include "sdk/include/session.h"
 
-struct per_session_evcb_runtime_ctx;
-
 struct stellar_session_event_data
 {
     struct stellar_session *s;
@@ -18,10 +16,6 @@ struct session_manager *session_manager_init();
 struct stellar_event *session_manager_commit(struct session_manager *session_mgr, struct stellar_packet *pkt);
 struct stellar_event *session_manager_fetch_event(struct session_manager *session_mgr);
 
-// interfaces for data interaction between stellar event and plugin manager
-struct session_plugin_ctx *stellar_event_get_plugin_ctx(struct stellar_event *event);
-void stellar_event_set_plugin_ctx(struct stellar_event *event, struct session_plugin_ctx *plugin_ctx);
-
 struct stellar_session
 {
     stellar_session_type type;
@@ -29,3 +23,18 @@ struct stellar_session
     void *addr;
     void *data;
 };
+
+/******************************************************************************
+ * API: between stellar_event and plugin_manager
+ ******************************************************************************/
+
+struct session_plugin_ctx *stellar_event_get_plugin_ctx(struct stellar_event *event);
+void stellar_event_set_plugin_ctx(struct stellar_event *event, struct session_plugin_ctx *plugin_ctx);
+
+enum session_event_type stellar_event_get_type(struct stellar_event *event);
+const char *stellar_event_get_session_name(struct stellar_event *event);
+const struct stellar_session *stellar_event_get_session(struct stellar_event *event);
+struct stellar_packet *stellar_event_get_packet(struct stellar_event *event);
+
+const char *stellar_event_get_payload(struct stellar_event *event);
+uint16_t stellar_event_get_payload_length(struct stellar_event *event);
\ No newline at end of file

From 5c790085ebbf5812a34f6fcbc9c2e4398a723667 Mon Sep 17 00:00:00 2001
From: luwenpeng <luwenpeng@geedgenetworks.com>
Date: Wed, 3 Aug 2022 19:46:43 +0800
Subject: [PATCH 10/17] Plugin management support pm_session_dettach_me and
 pm_session_dettach_others Add test cases for pm_session_dettach_me and
 pm_session_dettach_others

---
 readme.md                                     |  18 +-
 sdk/example/custom_event_plugin.cpp           | 125 +++-
 sdk/example/http_event_plugin.cpp             |  59 +-
 .../custom_event_plugin.inf                   |   9 +-
 .../http_event_plugin/http_event_plugin.inf   |   1 +
 sdk/include/http.h                            |   3 +-
 sdk/include/plugin.h                          |  22 +-
 sdk/include/session.h                         |  24 +-
 src/main.cpp                                  |   5 +-
 src/plugin_manager/plugin_manager.cpp         | 169 ++++--
 src/plugin_manager/plugin_manager.h           |  25 +-
 src/plugin_manager/plugin_manager_config.cpp  | 115 +---
 src/plugin_manager/plugin_manager_config.h    |  22 +-
 src/plugin_manager/plugin_manager_module.cpp  | 111 ++--
 src/plugin_manager/plugin_manager_module.h    |  22 +-
 src/plugin_manager/plugin_manager_util.cpp    |  93 ++-
 src/plugin_manager/plugin_manager_util.h      |  22 +-
 src/plugin_manager/test/CMakeLists.txt        |   3 +
 .../test/gtest_plugin_manager.cpp             | 539 ++++++++++++++++--
 .../custom_event_plugin.inf                   |  13 +-
 .../http_event_plugin/http_event_plugin.inf   |   1 +
 .../plugins_library/custom_event_plugin.cpp   | 216 ++++++-
 .../plugins_library/http_event_plugin.cpp     |  77 ++-
 src/protocol_decoder/http/http.cpp            |   4 +
 src/session_manager/session_manager.cpp       |  21 +-
 src/session_manager/session_manager.h         |  11 +-
 26 files changed, 1348 insertions(+), 382 deletions(-)

diff --git a/readme.md b/readme.md
index aed4fcc..5b375b8 100644
--- a/readme.md
+++ b/readme.md
@@ -39,12 +39,26 @@ packet_io_loop()
 ## Plugin Manager
 
 Plugin Management APIs
+
 ```
-pm_session_dettach_me(pm, session);
-pm_session_dettach_others(pm, session);
+/*
+ * The plugin manager just set the skip flag and don't call this event callback next.
+ * Before calling pm_session_dettach_me, the current plugin must release related resources for the current session.
+ */
+pm_session_dettach_me(session);
+
+/*
+ * The plugin manager uses ERROR_EVENT_DETTACH to call other plugin error callbacks, 
+ * and when the plugin error callback handler is called, 
+ * the error callback handler must release the relevant resources for the current session.
+ */
+pm_session_dettach_others(session);
 ```
+
 ## Session Manager
+
 Session Management APIs
+
 ```
 session_drop_current_packet(session);
 session_set_ratelimit_group(session, rl_group_id);
diff --git a/sdk/example/custom_event_plugin.cpp b/sdk/example/custom_event_plugin.cpp
index 0d7f1c4..a1d4d03 100644
--- a/sdk/example/custom_event_plugin.cpp
+++ b/sdk/example/custom_event_plugin.cpp
@@ -5,6 +5,7 @@
 #include <stddef.h>
 #include <stdlib.h>
 #include <stdio.h>
+#include <string.h>
 
 static char *g_handler = NULL;
 
@@ -13,29 +14,121 @@ static void *custom_decode(const char *payload, uint16_t len, void **pme)
 	return NULL;
 }
 
-extern "C" void custom_plugin_tcp_entry(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
+struct tcp_session_pme
 {
-	char **per_session_pme = (char **)pme;
+	char data[16];
+	/* data */
+};
 
-	printf("RUN custom_plugin_tcp_entry, event: %d\n", event);
+struct custom_session_pme
+{
+	char data[16];
+	/* data */
+};
 
-	struct stellar_session_event_extras *info = (struct stellar_session_event_extras *)custom_decode(payload, len, pme);
-	struct stellar_session *new_session = session_manager_session_derive(s, "CUSTOM");
-
-	session_manager_trigger_event(new_session, SESSION_EVENT_OPENING, info);
-	session_manager_trigger_event(new_session, SESSION_EVENT_META, info);
+static struct tcp_session_pme *tcp_session_pme_create()
+{
+	struct tcp_session_pme *pme = (struct tcp_session_pme *)calloc(1, sizeof(struct tcp_session_pme));
+	return pme;
 }
 
-extern "C" void custom_plugin_custom_entry(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
+static void tcp_session_pme_destory(struct tcp_session_pme *pme)
 {
-	char **per_session_pme = (char **)pme;
-
-	printf("RUN custom_plugin_custom_entry, event: %d\n", event);
+	if (pme)
+	{
+		free(pme);
+		pme = NULL;
+	}
 }
 
-extern "C" int custom_plugin_init(void)
+static struct custom_session_pme *custom_session_pme_create()
 {
-	printf("RUN custom_plugin_init\n");
+	struct custom_session_pme *pme = (struct custom_session_pme *)calloc(1, sizeof(struct custom_session_pme));
+	return pme;
+}
+
+static void custom_session_pme_destory(struct custom_session_pme *pme)
+{
+	if (pme)
+	{
+		free(pme);
+		pme = NULL;
+	}
+}
+
+extern "C" void custom_event_plugin_error(const struct stellar_session *session, enum error_event_type event, void **pme)
+{
+	if (strcmp(stellar_session_get_name(session), "TCP") == 0)
+	{
+		struct tcp_session_pme **per_tcp_session_pme = (struct tcp_session_pme **)pme;
+		printf("RUN custom_event_plugin_error, session_name: 'TCP', error_event_type: %d, pme->data: %s\n", event, (*per_tcp_session_pme) == NULL ? "NULL" : (*per_tcp_session_pme)->data);
+		tcp_session_pme_destory(*per_tcp_session_pme);
+	}
+
+	if (strcmp(stellar_session_get_name(session), "CUSTOM") == 0)
+	{
+		struct custom_session_pme **per_custom_session_pme = (struct custom_session_pme **)pme;
+		printf("RUN custom_event_plugin_error, session_name: 'CUSTOM', error_event_type: %d, pme->data: %s\n", event, (*per_custom_session_pme) == NULL ? "NULL" : (*per_custom_session_pme)->data);
+		custom_session_pme_destory(*per_custom_session_pme);
+	}
+}
+
+extern "C" void custom_event_plugin_tcp_entry(const struct stellar_session *session, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
+{
+	struct tcp_session_pme **per_tcp_session_pme = (struct tcp_session_pme **)pme;
+
+	printf("RUN custom_event_plugin_tcp_entry, event: %d\n", event);
+
+	if (event & SESSION_EVENT_OPENING)
+	{
+		if (*per_tcp_session_pme == NULL)
+		{
+			struct tcp_session_pme *cur_ctx = tcp_session_pme_create();
+			snprintf(cur_ctx->data, 6, "tcp******");
+			*per_tcp_session_pme = *&cur_ctx;
+		}
+	}
+
+	if (event & SESSION_EVENT_ORDPKT)
+	{
+		struct stellar_session_event_extras *info = (struct stellar_session_event_extras *)custom_decode(payload, len, pme);
+		struct stellar_session *new_session = session_manager_session_derive(session, "CUSTOM");
+
+		session_manager_trigger_event(new_session, SESSION_EVENT_OPENING, info);
+		session_manager_trigger_event(new_session, SESSION_EVENT_META, info);
+	}
+
+	if (event & SESSION_EVENT_CLOSING)
+	{
+		tcp_session_pme_destory(*per_tcp_session_pme);
+	}
+}
+
+extern "C" void custom_event_plugin_custom_entry(const struct stellar_session *session, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
+{
+	struct custom_session_pme **per_custom_session_pme = (struct custom_session_pme **)pme;
+
+	printf("RUN custom_event_plugin_custom_entry, event: %d\n", event);
+
+	if (event & SESSION_EVENT_OPENING)
+	{
+		if (*per_custom_session_pme == NULL)
+		{
+			struct custom_session_pme *cur_ctx = custom_session_pme_create();
+			snprintf(cur_ctx->data, 6, "custom******");
+			*per_custom_session_pme = *&cur_ctx;
+		}
+	}
+
+	if (event & SESSION_EVENT_CLOSING)
+	{
+		custom_session_pme_destory(*per_custom_session_pme);
+	}
+}
+
+extern "C" int custom_event_plugin_init(void)
+{
+	printf("RUN custom_event_plugin_init\n");
 
 	if (g_handler == NULL)
 	{
@@ -46,9 +139,9 @@ extern "C" int custom_plugin_init(void)
 	return 0;
 }
 
-extern "C" void custom_plugin_exit(void)
+extern "C" void custom_event_plugin_exit(void)
 {
-	printf("RUN custom_plugin_exit\n");
+	printf("RUN custom_event_plugin_exit\n");
 
 	if (g_handler)
 	{
diff --git a/sdk/example/http_event_plugin.cpp b/sdk/example/http_event_plugin.cpp
index e41d8b6..0cf5364 100644
--- a/sdk/example/http_event_plugin.cpp
+++ b/sdk/example/http_event_plugin.cpp
@@ -4,56 +4,77 @@
 
 #include <stdlib.h>
 #include <stdio.h>
+#include <string.h>
 
 static char *g_handler = NULL;
 
-struct per_session_pme_info
+struct http_session_pme
 {
-	int flag;
 	char data[16];
+	/* data */;
 };
 
-extern "C" void http_event_plugin_entry(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
+static struct http_session_pme *http_session_pme_create()
 {
-	struct per_session_pme_info **per_session_pme = (struct per_session_pme_info **)pme;
+	struct http_session_pme *pme = (struct http_session_pme *)calloc(1, sizeof(struct http_session_pme));
+	return pme;
+}
+
+static void http_session_pme_destory(struct http_session_pme *pme)
+{
+	if (pme)
+	{
+		free(pme);
+		pme = NULL;
+	}
+}
+
+extern "C" void http_event_plugin_error(const struct stellar_session *session, enum error_event_type event, void **pme)
+{
+	if (strcmp(stellar_session_get_name(session), "HTTP") == 0)
+	{
+		struct http_session_pme **per_http_session_pme = (struct http_session_pme **)pme;
+		printf("RUN http_event_plugin_error, session_name: 'HTTP', error_event_type: %d, pme->data: %s\n", event, (*per_http_session_pme) == NULL ? "NULL" : (*per_http_session_pme)->data);
+		http_session_pme_destory(*per_http_session_pme);
+	}
+}
+
+extern "C" void http_event_plugin_entry(const struct stellar_session *session, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
+{
+	struct http_session_pme **per_http_session_pme = (struct http_session_pme **)pme;
 
 	printf("RUN http_event_plugin_entry, event: %d\n", event);
 
 	if (event & SESSION_EVENT_OPENING)
 	{
-		if (*per_session_pme == NULL)
+		if (*per_http_session_pme == NULL)
 		{
-			struct per_session_pme_info *cur_ctx = (struct per_session_pme_info *)malloc(sizeof(struct per_session_pme_info));
-			snprintf(cur_ctx->data, 6, "******");
-			*per_session_pme = *&cur_ctx;
-			printf("http_event_plugin_entry->opening_handler\n");
+			struct http_session_pme *cur_ctx = http_session_pme_create();
+			snprintf(cur_ctx->data, 6, "http******");
+			*per_http_session_pme = *&cur_ctx;
 		}
 	}
 
 	if (event & SESSION_EVENT_RAWPKT)
 	{
-		printf("http_event_plugin_entry->rawpkt_handler\n");
+		// TODO
+		pm_session_dettach_me(session);
 	}
 
 	if (event & SESSION_EVENT_ORDPKT)
 	{
-		printf("http_event_plugin_entry->ordpkt_handler\n");
+		// TODO
+		pm_session_dettach_others(session);
 	}
 
 	if (event & SESSION_EVENT_META)
 	{
-		printf("http_event_plugin_entry->meta_handler\n");
+		// TODO
 	}
 
 	if (event & SESSION_EVENT_CLOSING)
 	{
-		if (*per_session_pme)
-		{
-			printf("http_event_plugin_entry->closing_hanler\n");
-
-			free(*per_session_pme);
-			*per_session_pme = NULL;
-		}
+		http_session_pme_destory(*per_http_session_pme);
 	}
 }
 
diff --git a/sdk/example/plugins/custom_event_plugin/custom_event_plugin.inf b/sdk/example/plugins/custom_event_plugin/custom_event_plugin.inf
index c7d3fe3..3718be0 100644
--- a/sdk/example/plugins/custom_event_plugin/custom_event_plugin.inf
+++ b/sdk/example/plugins/custom_event_plugin/custom_event_plugin.inf
@@ -1,14 +1,15 @@
 [PLUGINFO]
-INIT_FUNC="custom_plugin_init"
-EXIT_FUNC="custom_plugin_exit"
+INIT_FUNC="custom_event_plugin_init"
+EXIT_FUNC="custom_event_plugin_exit"
+ERROR_FUNC="custom_event_plugin_error"
 LIBRARY_PATH="./plugins/custom_event_plugin/custom_event_plugin.so"
 
 # Support SESSION_EVENT_TYPE: "SESSION_EVENT_OPENING", "SESSION_EVENT_RAWPKT", "SESSION_EVENT_ORDPKT", "SESSION_EVENT_META", "SESSION_EVENT_CLOSING", "SESSION_EVENT_ALL"
 
 [SESSION_NAME.TCP]
 SESSION_EVENT_TYPE=["SESSION_EVENT_ALL"]
-SESSION_EVENT_CALLBACK="custom_plugin_tcp_entry"
+SESSION_EVENT_CALLBACK="custom_event_plugin_tcp_entry"
 
 [SESSION_NAME.CUSTOM]
 SESSION_EVENT_TYPE=["SESSION_EVENT_OPENING","SESSION_EVENT_ORDPKT","SESSION_EVENT_CLOSING"]
-SESSION_EVENT_CALLBACK="custom_plugin_custom_entry"
\ No newline at end of file
+SESSION_EVENT_CALLBACK="custom_event_plugin_custom_entry"
\ No newline at end of file
diff --git a/sdk/example/plugins/http_event_plugin/http_event_plugin.inf b/sdk/example/plugins/http_event_plugin/http_event_plugin.inf
index a58a405..e0f2704 100644
--- a/sdk/example/plugins/http_event_plugin/http_event_plugin.inf
+++ b/sdk/example/plugins/http_event_plugin/http_event_plugin.inf
@@ -1,6 +1,7 @@
 [PLUGINFO]
 INIT_FUNC="http_event_plugin_init"
 EXIT_FUNC="http_event_plugin_exit"
+ERROR_FUNC="http_event_plugin_error"
 LIBRARY_PATH="./plugins/http_event_plugin/http_event_plugin.so"
 
 # Support SESSION_EVENT_TYPE: "SESSION_EVENT_OPENING", "SESSION_EVENT_RAWPKT", "SESSION_EVENT_ORDPKT", "SESSION_EVENT_META", "SESSION_EVENT_CLOSING", "SESSION_EVENT_ALL"
diff --git a/sdk/include/http.h b/sdk/include/http.h
index 6250055..4db1126 100644
--- a/sdk/include/http.h
+++ b/sdk/include/http.h
@@ -2,4 +2,5 @@
 
 #include "session.h"
 
-void http_decoder(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme);
\ No newline at end of file
+void http_decoder(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme);
+void http_error_cb(const struct stellar_session *s, enum error_event_type event, void **pme);
\ No newline at end of file
diff --git a/sdk/include/plugin.h b/sdk/include/plugin.h
index d213f7c..0d6c346 100644
--- a/sdk/include/plugin.h
+++ b/sdk/include/plugin.h
@@ -1,15 +1,25 @@
-#pragma once
+#ifndef _PLUGIN_H
+#define _PLUGIN_H
+
+#ifdef __cpluscplus
+extern "C"
+{
+#endif
 
 #include "session.h"
 
 typedef int plugin_init_callback(void);
 typedef void plugin_exit_callback(void);
 
-void plugin_remove_from_session_event(struct stellar_event *ev, struct stellar_session *s);
-
 /******************************************************************************
- * Public API: between plugin and plugin_manager
+ * Public API For Plugin
  ******************************************************************************/
 
-// TODO
-// TODO
\ No newline at end of file
+void pm_session_dettach_me(const struct stellar_session *session);
+void pm_session_dettach_others(const struct stellar_session *session);
+
+#ifdef __cpluscplus
+}
+#endif
+
+#endif
\ No newline at end of file
diff --git a/sdk/include/session.h b/sdk/include/session.h
index 19bb566..8c4b25f 100644
--- a/sdk/include/session.h
+++ b/sdk/include/session.h
@@ -1,4 +1,10 @@
-#pragma once
+#ifndef _SESSION_H
+#define _SESSION_H
+
+#ifdef __cpluscplus
+extern "C"
+{
+#endif
 
 #include "packet.h"
 #include "event.h"
@@ -34,9 +40,23 @@ enum session_event_type
 	SESSION_EVENT_ALL = (0x01 << 1 | 0x01 << 2 | 0x01 << 3 | 0x01 << 4 | 0x01 << 5),
 };
 
+enum error_event_type
+{
+	ERROR_EVENT_DETTACH = (0x1 << 10),
+};
+
 struct stellar_session_event_extras;
 
+typedef void(fn_session_error_callback)(const struct stellar_session *s, enum error_event_type event, void **pme);
 typedef void(fn_session_event_callback)(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme);
 
 void session_manager_trigger_event(struct stellar_session *s, enum session_event_type type, struct stellar_session_event_extras *info);
-struct stellar_session *session_manager_session_derive(const struct stellar_session *this_session, const char *session_name);
\ No newline at end of file
+struct stellar_session *session_manager_session_derive(const struct stellar_session *this_session, const char *session_name);
+
+const char *stellar_session_get_name(const struct stellar_session *session);
+
+#ifdef __cpluscplus
+}
+#endif
+
+#endif
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index 8d1655d..2b1d541 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -59,12 +59,11 @@ int main(int argc, char ** argv)
 	struct plugin_manager *plug_mgr = plugin_manager_create();
 
 	// register build-in plugin
-	plugin_manager_register(plug_mgr, "HTTP", SESSION_EVENT_ALL, http_decoder);
+	plugin_manager_register(plug_mgr, "HTTP", SESSION_EVENT_ALL, http_decoder, http_error_cb);
 
 	// load external plugins
-	char prefix_path[] = "/op/tsg/stellar/";
 	char file_path[] = "./plugs/plugins.inf";
-	plugin_manager_load(plug_mgr, prefix_path, file_path);
+	plugin_manager_load(plug_mgr, file_path);
 
 	//packet_io_init
 	struct packet_io_device *dev = packet_io_init(1, "stellar", "cap0");
diff --git a/src/plugin_manager/plugin_manager.cpp b/src/plugin_manager/plugin_manager.cpp
index 7b6492a..6baaad6 100644
--- a/src/plugin_manager/plugin_manager.cpp
+++ b/src/plugin_manager/plugin_manager.cpp
@@ -1,48 +1,49 @@
-#include "deps/uthash/uthash.h"
-#include "session_manager.h"
-#include "plugin_manager_util.h"
-#include "plugin_manager_config.h"
-#include "plugin_manager_module.h"
-
 #include <assert.h>
 #include <errno.h>
 
+#include "uthash/uthash.h"
+
+#include "session_manager.h"
+#include "plugin_manager_module.h"
+
 /******************************************************************************
  * CallBack Runtime (For Per Session)
  ******************************************************************************/
 
-struct eventcb_runtime
+struct callback_runtime
 {
 	int skip;
 	void *cb_args;
 
 	enum session_event_type event;
-	fn_session_event_callback *cb;
+	fn_session_event_callback *event_cb;
+	fn_session_error_callback *error_cb;
 };
 
 struct session_plugin_ctx
 {
-	int current_plugin_index;
-	int eventcb_num;
-	struct eventcb_runtime *eventcbs;
+	int callback_index;
+	int callback_num;
+	struct callback_runtime *callbacks;
 };
 
 /******************************************************************************
  * CallBack Static (For Per Plugin Manager)
  ******************************************************************************/
 
-struct eventcb_static
+struct callback_static
 {
 	enum session_event_type event;
-	fn_session_event_callback *cb;
+	fn_session_event_callback *event_cb;
+	fn_session_error_callback *error_cb;
 };
 
 struct plugin_manager_eventcb
 {
 	char session_name[MAX_SESSION_NAME_LENGTH]; // key
 
-	int eventcb_num;				 // val size
-	struct eventcb_static *eventcbs; // val: dynamic array
+	int callback_num;				   // val size
+	struct callback_static *callbacks; // val: dynamic array
 
 	UT_hash_handle hh;
 };
@@ -84,15 +85,16 @@ static struct session_plugin_ctx *plugin_manager_create_plugin_ctx(struct plugin
 	else
 	{
 		struct session_plugin_ctx *plug_ctx = safe_alloc(struct session_plugin_ctx, 1);
-		plug_ctx->eventcb_num = elem->eventcb_num;
-		plug_ctx->eventcbs = safe_alloc(struct eventcb_runtime, plug_ctx->eventcb_num);
+		plug_ctx->callback_num = elem->callback_num;
+		plug_ctx->callbacks = safe_alloc(struct callback_runtime, plug_ctx->callback_num);
 
-		for (int i = 0; i < plug_ctx->eventcb_num; i++)
+		for (int i = 0; i < plug_ctx->callback_num; i++)
 		{
-			plug_ctx->eventcbs[i].skip = 0;
-			plug_ctx->eventcbs[i].event = elem->eventcbs[i].event;
-			plug_ctx->eventcbs[i].cb = elem->eventcbs[i].cb;
-			plug_ctx->eventcbs[i].cb_args = NULL;
+			plug_ctx->callbacks[i].skip = 0;
+			plug_ctx->callbacks[i].event = elem->callbacks[i].event;
+			plug_ctx->callbacks[i].event_cb = elem->callbacks[i].event_cb;
+			plug_ctx->callbacks[i].error_cb = elem->callbacks[i].error_cb;
+			plug_ctx->callbacks[i].cb_args = NULL;
 		}
 
 		return plug_ctx;
@@ -103,7 +105,7 @@ static void plugin_manager_destory_plugin_ctx(struct session_plugin_ctx *plug_ct
 {
 	if (plug_ctx)
 	{
-		safe_free(plug_ctx->eventcbs);
+		safe_free(plug_ctx->callbacks);
 		safe_free(plug_ctx);
 	}
 }
@@ -112,26 +114,20 @@ static void plugin_manager_destory_plugin_ctx(struct session_plugin_ctx *plug_ct
  * Tools for managing plugins
  ******************************************************************************/
 
-static int plugin_manager_parse_plugins(struct plugin_manager *plug_mgr, const char *prefix, const char *file)
+static int plugin_manager_parse_plugins(struct plugin_manager *plug_mgr, const char *file)
 {
-	char plugin_inf[4096] = {0};
 	char line_buffer[4096] = {0};
-	if (strlen(prefix) <= 0)
-	{
-		plugin_manager_log(ERROR, "Invalid parameter, plugin config file prefix cannot be empty");
-		return -1;
-	}
+
 	if (strlen(file) <= 0)
 	{
 		plugin_manager_log(ERROR, "Invalid parameter, plugin config file name cannot be empty");
 		return -1;
 	}
-	strcat_prefix_and_file(prefix, file, plugin_inf, sizeof(plugin_inf));
 
-	FILE *fp = fopen(plugin_inf, "r");
+	FILE *fp = fopen(file, "r");
 	if (fp == NULL)
 	{
-		plugin_manager_log(ERROR, "can't open %s, %s", plugin_inf, strerror(errno));
+		plugin_manager_log(ERROR, "can't open %s, %s", file, strerror(errno));
 		return -1;
 	}
 
@@ -142,6 +138,7 @@ static int plugin_manager_parse_plugins(struct plugin_manager *plug_mgr, const c
 			memset(line_buffer, 0, sizeof(line_buffer));
 			continue;
 		}
+		line_buffer[strcspn(line_buffer, "\r\n")] = 0;
 
 		if (plug_mgr->used_config_num >= MAX_PLUGIN_NUM)
 		{
@@ -150,7 +147,7 @@ static int plugin_manager_parse_plugins(struct plugin_manager *plug_mgr, const c
 		}
 
 		struct plugin_manager_config *config = plugin_mangager_config_create();
-		if (plugin_mangager_config_parse(config, prefix, line_buffer) == -1)
+		if (plugin_mangager_config_parse(config, line_buffer) == -1)
 		{
 			plugin_mangager_config_destory(config);
 			goto err;
@@ -186,6 +183,8 @@ static int plugin_manager_open_plugins(struct plugin_manager *plug_mgr)
 		{
 			return -1;
 		}
+		plugin_manager_module_dump(module, config);
+
 		plug_mgr->modules[plug_mgr->used_module_num] = module;
 		plug_mgr->used_module_num++;
 	}
@@ -267,9 +266,9 @@ static void plugin_manager_deparse_plugins(struct plugin_manager *plug_mgr)
  * Public API for managing plugins
  ******************************************************************************/
 
-int plugin_manager_load(struct plugin_manager *plug_mgr, const char *prefix, const char *file)
+int plugin_manager_load(struct plugin_manager *plug_mgr, const char *file)
 {
-	if (plugin_manager_parse_plugins(plug_mgr, prefix, file) == -1)
+	if (plugin_manager_parse_plugins(plug_mgr, file) == -1)
 	{
 		return -1;
 	}
@@ -324,7 +323,7 @@ void plugin_manager_destory(struct plugin_manager *plug_mgr)
 			{
 				HASH_DEL(plug_mgr->evcb_htable, elem);
 
-				safe_free(elem->eventcbs);
+				safe_free(elem->callbacks);
 				safe_free(elem);
 			}
 
@@ -337,7 +336,7 @@ void plugin_manager_destory(struct plugin_manager *plug_mgr)
 	}
 }
 
-int plugin_manager_register(struct plugin_manager *plug_mgr, const char *session_name, enum session_event_type event, fn_session_event_callback *cb)
+int plugin_manager_register(struct plugin_manager *plug_mgr, const char *session_name, enum session_event_type event, fn_session_event_callback *event_cb, fn_session_error_callback *error_cb)
 {
 	if (strlen(session_name) <= 0)
 	{
@@ -351,23 +350,30 @@ int plugin_manager_register(struct plugin_manager *plug_mgr, const char *session
 		return -1;
 	}
 
-	if (cb == NULL)
+	if (event_cb == NULL)
 	{
-		plugin_manager_log(ERROR, "invalid parameter, the callback corresponding to the session name '%s' is null", session_name);
+		plugin_manager_log(ERROR, "invalid parameter, the event callback corresponding to the session name '%s' is null", session_name);
+		return -1;
+	}
+
+	if (error_cb == NULL)
+	{
+		plugin_manager_log(ERROR, "invalid parameter, the error callback corresponding to the session name '%s' is null", session_name);
 		return -1;
 	}
 
 	struct plugin_manager_eventcb *elem;
 	HASH_FIND_STR(plug_mgr->evcb_htable, session_name, elem);
-	// session_name exists, add a new cb to the end of the eventcbs dynamic array
+	// session_name exists, add a new cb to the end of the callbacks dynamic array
 	if (elem)
 	{
-		elem->eventcbs = (struct eventcb_static *)realloc(elem->eventcbs, (elem->eventcb_num + 1) * sizeof(struct eventcb_static));
+		elem->callbacks = (struct callback_static *)realloc(elem->callbacks, (elem->callback_num + 1) * sizeof(struct callback_static));
 
-		elem->eventcbs[elem->eventcb_num].event = event;
-		elem->eventcbs[elem->eventcb_num].cb = cb;
+		elem->callbacks[elem->callback_num].event = event;
+		elem->callbacks[elem->callback_num].event_cb = event_cb;
+		elem->callbacks[elem->callback_num].error_cb = error_cb;
 
-		elem->eventcb_num++;
+		elem->callback_num++;
 	}
 	// session_name does not exist, allocate a new node elem, and add elem to the hash table
 	else
@@ -375,12 +381,13 @@ int plugin_manager_register(struct plugin_manager *plug_mgr, const char *session
 		elem = safe_alloc(struct plugin_manager_eventcb, 1);
 		memcpy(elem->session_name, session_name, strlen(session_name));
 
-		elem->eventcbs = (struct eventcb_static *)realloc(elem->eventcbs, (elem->eventcb_num + 1) * sizeof(struct eventcb_static));
+		elem->callbacks = (struct callback_static *)realloc(elem->callbacks, (elem->callback_num + 1) * sizeof(struct callback_static));
 
-		elem->eventcbs[elem->eventcb_num].event = event;
-		elem->eventcbs[elem->eventcb_num].cb = cb;
+		elem->callbacks[elem->callback_num].event = event;
+		elem->callbacks[elem->callback_num].event_cb = event_cb;
+		elem->callbacks[elem->callback_num].error_cb = error_cb;
 
-		elem->eventcb_num++;
+		elem->callback_num++;
 
 		HASH_ADD_STR(plug_mgr->evcb_htable, session_name, elem);
 	}
@@ -401,6 +408,9 @@ void plugin_manager_dispatch(struct plugin_manager *plug_mgr, struct stellar_eve
 	assert(seesion);
 	assert(session_name);
 
+	char event_str_buffer[1024] = {0};
+	session_event_type_int2str(event_type, event_str_buffer, 1024);
+
 	// the same session may trigger multi times opening events
 	if (event_type & SESSION_EVENT_OPENING)
 	{
@@ -418,18 +428,20 @@ void plugin_manager_dispatch(struct plugin_manager *plug_mgr, struct stellar_eve
 
 	if (plug_ctx)
 	{
-		for (int i = 0; i < plug_ctx->eventcb_num; i++)
+		for (int i = 0; i < plug_ctx->callback_num; i++)
 		{
-			plug_ctx->current_plugin_index = i;
-			struct eventcb_runtime *runtime = &plug_ctx->eventcbs[i];
-			if (runtime->skip)
+			struct callback_runtime *runtime = &plug_ctx->callbacks[i];
+			if (runtime->skip == 1)
 			{
+				plugin_manager_log(DEBUG, "dispatch, skip event_cb: %p, session: %s, event: (%d, %s)", runtime->event_cb, session_name, event_type, event_str_buffer);
 				continue;
 			}
 
 			if (runtime->event & event_type)
 			{
-				runtime->cb(seesion, event_type, packet, payload, payload_len, &runtime->cb_args);
+				plug_ctx->callback_index = i;
+				plugin_manager_log(DEBUG, "dispatch, run event_cb: %p, session: %s, event: (%d, %s)", runtime->event_cb, session_name, event_type, event_str_buffer);
+				runtime->event_cb(seesion, event_type, packet, payload, payload_len, &runtime->cb_args);
 			}
 		}
 	}
@@ -446,6 +458,55 @@ void plugin_manager_dispatch(struct plugin_manager *plug_mgr, struct stellar_eve
 	}
 }
 
+/******************************************************************************
+ * Public API For Plugin
+ ******************************************************************************/
+
+void pm_session_dettach_me(const struct stellar_session *session)
+{
+	struct session_plugin_ctx *plugin_ctx = stellar_session_get_plugin_ctx(session);
+	assert(plugin_ctx);
+	struct callback_runtime *runtime_me = &plugin_ctx->callbacks[plugin_ctx->callback_index];
+
+	/*
+	 * Just set the skip flag and don't call this event callback next.
+	 * The plugin is closed before calling pm_session_dettach_me.
+	 */
+	runtime_me->skip = 1;
+	plugin_manager_log(DEBUG, "%p dettach me, disable event_cb: %p, session: %s", runtime_me->event_cb, runtime_me->event_cb, stellar_session_get_name(session));
+}
+
+void pm_session_dettach_others(const struct stellar_session *session)
+{
+	struct session_plugin_ctx *plugin_ctx = stellar_session_get_plugin_ctx(session);
+	assert(plugin_ctx);
+	struct callback_runtime *runtime_me = &plugin_ctx->callbacks[plugin_ctx->callback_index];
+
+	for (int i = 0; i < plugin_ctx->callback_num; i++)
+	{
+		if (i != plugin_ctx->callback_index)
+		{
+			struct callback_runtime *runtime_other = &plugin_ctx->callbacks[i];
+			runtime_other->skip = 1;
+			plugin_manager_log(DEBUG, "%p dettach others, run error_cb: %p, session: %s", runtime_me->event_cb, runtime_other->error_cb, stellar_session_get_name(session));
+			runtime_other->error_cb(session, ERROR_EVENT_DETTACH, &runtime_other->cb_args);
+		}
+	}
+}
+
+/******************************************************************************
+ * Util For Gtest
+ ******************************************************************************/
+
+void *pm_session_get_plugin_pme(const struct stellar_session *session)
+{
+	struct session_plugin_ctx *plugin_ctx = stellar_session_get_plugin_ctx(session);
+	assert(plugin_ctx);
+	struct callback_runtime *runtime_me = &plugin_ctx->callbacks[plugin_ctx->callback_index];
+
+	return runtime_me->cb_args;
+}
+
 /******************************************************************************
  * Suppport LUA plugins
  ******************************************************************************/
diff --git a/src/plugin_manager/plugin_manager.h b/src/plugin_manager/plugin_manager.h
index 4e96b06..2827483 100644
--- a/src/plugin_manager/plugin_manager.h
+++ b/src/plugin_manager/plugin_manager.h
@@ -1,4 +1,10 @@
-#pragma once
+#ifndef _PLUGIN_MANAGER_H
+#define _PLUGIN_MANAGER_H
+
+#ifdef __cpluscplus
+extern "C"
+{
+#endif
 
 #include "sdk/include/session.h"
 
@@ -7,10 +13,17 @@ struct plugin_manager;
 struct plugin_manager *plugin_manager_create();
 void plugin_manager_destory(struct plugin_manager *plug_mgr);
 
-// return  0: success
-// return -1: error
-int plugin_manager_load(struct plugin_manager *plug_mgr, const char *prefix, const char *file);
+int plugin_manager_load(struct plugin_manager *plug_mgr, const char *file);
 void plugin_manager_unload(struct plugin_manager *plug_mgr);
 
-int plugin_manager_register(struct plugin_manager *plug_mgr, const char *session_name, enum session_event_type event, fn_session_event_callback *callback);
-void plugin_manager_dispatch(struct plugin_manager *plug_mgr, struct stellar_event *event);
\ No newline at end of file
+int plugin_manager_register(struct plugin_manager *plug_mgr, const char *session_name, enum session_event_type event, fn_session_event_callback *event_cb, fn_session_error_callback *error_cb);
+void plugin_manager_dispatch(struct plugin_manager *plug_mgr, struct stellar_event *event);
+
+// only use for gtest
+void *pm_session_get_plugin_pme(const struct stellar_session *session);
+
+#ifdef __cpluscplus
+}
+#endif
+
+#endif
\ No newline at end of file
diff --git a/src/plugin_manager/plugin_manager_config.cpp b/src/plugin_manager/plugin_manager_config.cpp
index f36512c..89dd39b 100644
--- a/src/plugin_manager/plugin_manager_config.cpp
+++ b/src/plugin_manager/plugin_manager_config.cpp
@@ -1,65 +1,10 @@
 #include <errno.h>
-#include <stdlib.h>
 #include <string.h>
 
 #include "toml/toml.h"
-#include "sdk/include/session.h"
-#include "plugin_manager_util.h"
+
 #include "plugin_manager_config.h"
 
-struct event_type_map
-{
-    const char *type_str;
-    enum session_event_type type_int;
-};
-
-static struct event_type_map evtype_map[] =
-    {
-        {"SESSION_EVENT_OPENING", SESSION_EVENT_OPENING},
-        {"SESSION_EVENT_RAWPKT", SESSION_EVENT_RAWPKT},
-        {"SESSION_EVENT_ORDPKT", SESSION_EVENT_ORDPKT},
-        {"SESSION_EVENT_META", SESSION_EVENT_META},
-        {"SESSION_EVENT_CLOSING", SESSION_EVENT_CLOSING},
-        {"SESSION_EVENT_ALL", SESSION_EVENT_ALL},
-};
-
-/******************************************************************************
- * Private API (For Event Type)
- ******************************************************************************/
-
-static enum session_event_type event_type_str2int(const char *evtype_str)
-{
-    int num = sizeof(evtype_map) / sizeof(evtype_map[0]);
-
-    for (int i = 0; i < num; i++)
-    {
-        if (strcmp(evtype_str, evtype_map[i].type_str) == 0)
-        {
-            return evtype_map[i].type_int;
-        }
-    }
-
-    return SESSION_EVENT_UNKNOWN;
-}
-
-static void event_type_int2str(enum session_event_type evtype_int, char *buffer, int size)
-{
-    int used = 0;
-    int num = sizeof(evtype_map) / sizeof(evtype_map[0]);
-
-    for (int i = 0; i < num; i++)
-    {
-        if (evtype_map[i].type_int & evtype_int)
-        {
-            if (evtype_map[i].type_int == SESSION_EVENT_ALL && evtype_int != SESSION_EVENT_ALL)
-            {
-                continue;
-            }
-            used += snprintf(buffer + used, size - used, "%s ", evtype_map[i].type_str);
-        }
-    }
-}
-
 /******************************************************************************
  * Private API (For Parse)
  ******************************************************************************/
@@ -117,6 +62,11 @@ static int toml_parse_plugin_section(toml_table_t *root, struct plugin_manager_c
         return -1;
     }
 
+    if (toml_parse_string(plugin_section, "ERROR_FUNC", file, &config->plugin_section.error_func_name) == -1)
+    {
+        return -1;
+    }
+
     if (toml_parse_string(plugin_section, "LIBRARY_PATH", file, &config->plugin_section.lib_path) == -1)
     {
         return -1;
@@ -193,7 +143,7 @@ static int toml_parse_session_section(toml_table_t *root, struct plugin_manager_
                 return -1;
             }
 
-            type_int = event_type_str2int(type_str.u.s);
+            type_int = session_event_type_str2int(type_str.u.s);
             if (type_int == SESSION_EVENT_UNKNOWN)
             {
                 plugin_manager_log(ERROR, "invalid value '%s' for 'SESSION_EVENT_TYPE' configuration item in '[SESSION_NAME.%s]' section of %s", type_str.u.s, session_name, file);
@@ -219,12 +169,12 @@ struct plugin_manager_config *plugin_mangager_config_create()
 {
     struct plugin_manager_config *config = safe_alloc(struct plugin_manager_config, 1);
 
-    config->prefix_path = NULL;
     config->file_path = NULL;
     config->session_section_num = 0;
     config->session_section = NULL;
     config->plugin_section.init_func_name = NULL;
     config->plugin_section.exit_func_name = NULL;
+    config->plugin_section.error_func_name = NULL;
     config->plugin_section.lib_path = NULL;
 
     return config;
@@ -234,11 +184,11 @@ void plugin_mangager_config_destory(struct plugin_manager_config *config)
 {
     if (config)
     {
-        safe_free(config->prefix_path);
         safe_free(config->file_path);
 
         safe_free(config->plugin_section.init_func_name);
         safe_free(config->plugin_section.exit_func_name);
+        safe_free(config->plugin_section.error_func_name);
         safe_free(config->plugin_section.lib_path);
 
         if (config->session_section)
@@ -260,10 +210,10 @@ void plugin_mangager_config_dump(struct plugin_manager_config *config)
 {
     if (config)
     {
-        plugin_manager_log(DEBUG, "[CONFIG_PREFIX] : %s", config->prefix_path);
-        plugin_manager_log(DEBUG, "[CONFIG_FILE] : %s", config->file_path);
-        plugin_manager_log(DEBUG, "[PLUGINFO]->INIT_FUNC : %s", config->plugin_section.init_func_name);
-        plugin_manager_log(DEBUG, "[PLUGINFO]->EXIT_FUNC : %s", config->plugin_section.exit_func_name);
+        plugin_manager_log(DEBUG, "[CONFIG_FILE]            : %s", config->file_path);
+        plugin_manager_log(DEBUG, "[PLUGINFO]->INIT_FUNC    : %s", config->plugin_section.init_func_name);
+        plugin_manager_log(DEBUG, "[PLUGINFO]->EXIT_FUNC    : %s", config->plugin_section.exit_func_name);
+        plugin_manager_log(DEBUG, "[PLUGINFO]->ERROR_FUNC   : %s", config->plugin_section.error_func_name);
         plugin_manager_log(DEBUG, "[PLUGINFO]->LIBRARY_PATH : %s", config->plugin_section.lib_path);
 
         if (config->session_section)
@@ -272,29 +222,26 @@ void plugin_mangager_config_dump(struct plugin_manager_config *config)
             {
                 char tmp_buffer[1024] = {0};
                 struct session_section_config *temp = &config->session_section[i];
-                event_type_int2str(temp->event, tmp_buffer, 1024);
-                plugin_manager_log(DEBUG, "[SESSION_NAME.%s]->SESSION_EVENT_TYPE : %d, %s", temp->session_name, temp->event, tmp_buffer);
+                session_event_type_int2str(temp->event, tmp_buffer, 1024);
+                plugin_manager_log(DEBUG, "[SESSION_NAME.%s]->SESSION_EVENT_TYPE     : %d, %s", temp->session_name, temp->event, tmp_buffer);
                 plugin_manager_log(DEBUG, "[SESSION_NAME.%s]->SESSION_EVENT_CALLBACK : %s", temp->session_name, temp->cb_func_name);
             }
         }
     }
 }
 
-int plugin_mangager_config_parse(struct plugin_manager_config *config, const char *prefix, const char *file)
+int plugin_mangager_config_parse(struct plugin_manager_config *config, const char *file)
 {
     FILE *fp = NULL;
     toml_table_t *root = NULL;
     char errbuf[200] = {0};
-    char tmp_buffer[4096] = {0};
 
-    config->prefix_path = safe_dup(prefix);
     config->file_path = safe_dup(file);
-    strcat_prefix_and_file(prefix, file, tmp_buffer, sizeof(tmp_buffer));
 
-    fp = fopen(tmp_buffer, "r");
+    fp = fopen(config->file_path, "r");
     if (fp == NULL)
     {
-        plugin_manager_log(ERROR, "can't open %s, %s", tmp_buffer, strerror(errno));
+        plugin_manager_log(ERROR, "can't open %s, %s", config->file_path, strerror(errno));
         return -1;
     }
 
@@ -318,6 +265,8 @@ int plugin_mangager_config_parse(struct plugin_manager_config *config, const cha
     toml_free(root);
     fclose(fp);
 
+    plugin_manager_log(INFO, "plugin config file '%s' parse success", config->file_path);
+
     return 0;
 
 err:
@@ -333,26 +282,4 @@ err:
     }
 
     return -1;
-}
-
-/******************************************************************************
- * Test
- ******************************************************************************/
-
-#ifdef PLUGIN_MANAGER_TEST
-int main(int argc, char *argv[])
-{
-    struct plugin_manager_config *config = plugin_mangager_config_create();
-
-    if (plugin_mangager_config_parse(config, argv[1], argv[2]) == -1)
-    {
-        plugin_manager_log(ERROR, "can't parser %s %s", argv[1], argv[2]);
-    }
-
-    plugin_mangager_config_dump(config);
-
-    plugin_mangager_config_destory(config);
-
-    return 0;
-}
-#endif
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/plugin_manager/plugin_manager_config.h b/src/plugin_manager/plugin_manager_config.h
index fa9164d..16a62ba 100644
--- a/src/plugin_manager/plugin_manager_config.h
+++ b/src/plugin_manager/plugin_manager_config.h
@@ -1,4 +1,10 @@
-#pragma once
+#ifndef _PLUGIN_MANAGER_CONFIG_H
+#define _PLUGIN_MANAGER_CONFIG_H
+
+#ifdef __cpluscplus
+extern "C"
+{
+#endif
 
 #include "plugin_manager_util.h"
 #include "sdk/include/session.h"
@@ -14,13 +20,13 @@ struct plugin_section_config
 {
     char *init_func_name;
     char *exit_func_name;
+    char *error_func_name;
     char *lib_path;
 };
 
 struct plugin_manager_config
 {
-    char *prefix_path; // absolute path to stellar installation
-    char *file_path;   // relative path to stellar installation
+    char *file_path;
 
     int session_section_num;
     struct session_section_config *session_section; // array
@@ -30,5 +36,11 @@ struct plugin_manager_config
 struct plugin_manager_config *plugin_mangager_config_create();
 void plugin_mangager_config_destory(struct plugin_manager_config *config);
 
-int plugin_mangager_config_parse(struct plugin_manager_config *config, const char *prefix, const char *file);
-void plugin_mangager_config_dump(struct plugin_manager_config *config);
\ No newline at end of file
+int plugin_mangager_config_parse(struct plugin_manager_config *config, const char *file);
+void plugin_mangager_config_dump(struct plugin_manager_config *config);
+
+#ifdef __cpluscplus
+}
+#endif
+
+#endif
\ No newline at end of file
diff --git a/src/plugin_manager/plugin_manager_module.cpp b/src/plugin_manager/plugin_manager_module.cpp
index 1e3011b..def9343 100644
--- a/src/plugin_manager/plugin_manager_module.cpp
+++ b/src/plugin_manager/plugin_manager_module.cpp
@@ -1,11 +1,9 @@
 #include <time.h>
 #include <dlfcn.h>
-#include <stdlib.h>
 #include <string.h>
 
 #include "sdk/include/plugin.h"
-#include "plugin_manager_util.h"
-#include "plugin_manager_config.h"
+#include "plugin_manager_module.h"
 #include "plugin_manager.h"
 
 struct plugin_manager_module_evcb
@@ -17,12 +15,12 @@ struct plugin_manager_module_evcb
 
 struct plugin_manager_module
 {
-    char *prefix;
     char *lib_path;
     void *dl_handle;
 
     plugin_init_callback *init_cb_ptr;
     plugin_exit_callback *exit_cb_ptr;
+    fn_session_error_callback *error_cb_ptr;
 
     struct plugin_manager_module_evcb *evcbs;
     int evcbs_num;
@@ -43,7 +41,6 @@ void plugin_manager_module_close(struct plugin_manager_module *module)
             module->dl_handle = NULL;
         }
 
-        safe_free(module->prefix);
         safe_free(module->lib_path);
         safe_free(module->evcbs);
         module->evcbs_num = 0;
@@ -59,18 +56,16 @@ struct plugin_manager_module *plugin_manager_module_open(struct plugin_manager_c
         return NULL;
     }
 
-    char dynamic_lib_path[4096] = {0};
     struct plugin_manager_module *module = safe_alloc(struct plugin_manager_module, 1);
 
-    module->prefix = safe_dup(config->prefix_path);
     module->lib_path = safe_dup(config->plugin_section.lib_path);
-    strcat_prefix_and_file(module->prefix, module->lib_path, dynamic_lib_path, sizeof(dynamic_lib_path));
 
+    // RTLD_NOW | RTLD_GLOBAL
     module->evcbs_num = 0;
-    module->dl_handle = dlopen(dynamic_lib_path, RTLD_LAZY | RTLD_GLOBAL | RTLD_DEEPBIND);
+    module->dl_handle = dlopen(module->lib_path, RTLD_NOW | RTLD_GLOBAL | RTLD_DEEPBIND);
     if (module->dl_handle == NULL)
     {
-        plugin_manager_log(ERROR, "can't dlopen %s, %s", dynamic_lib_path, dlerror());
+        plugin_manager_log(ERROR, "can't dlopen %s, %s", module->lib_path, dlerror());
         goto err;
     }
 
@@ -78,7 +73,7 @@ struct plugin_manager_module *plugin_manager_module_open(struct plugin_manager_c
     if (module->init_cb_ptr == NULL)
     {
         plugin_manager_log(ERROR, "can't find symbol name of '%s' in dynamic library %s, %s",
-                           config->plugin_section.init_func_name, dynamic_lib_path, dlerror());
+                           config->plugin_section.init_func_name, module->lib_path, dlerror());
         goto err;
     }
 
@@ -86,7 +81,15 @@ struct plugin_manager_module *plugin_manager_module_open(struct plugin_manager_c
     if (module->exit_cb_ptr == NULL)
     {
         plugin_manager_log(ERROR, "can't find symbol name of '%s' in dynamic library %s, %s",
-                           config->plugin_section.exit_func_name, dynamic_lib_path, dlerror());
+                           config->plugin_section.exit_func_name, module->lib_path, dlerror());
+        goto err;
+    }
+
+    module->error_cb_ptr = (fn_session_error_callback *)(dlsym(module->dl_handle, config->plugin_section.error_func_name));
+    if (module->error_cb_ptr == NULL)
+    {
+        plugin_manager_log(ERROR, "can't find symbol name of '%s' in dynamic library %s, %s",
+                           config->plugin_section.error_func_name, module->lib_path, dlerror());
         goto err;
     }
 
@@ -106,12 +109,14 @@ struct plugin_manager_module *plugin_manager_module_open(struct plugin_manager_c
             if (event_cb->event_cb_ptr == NULL)
             {
                 plugin_manager_log(ERROR, "can't find symbol name of '%s' in dynamic library %s, %s",
-                                   session_config->cb_func_name, dynamic_lib_path, dlerror());
+                                   session_config->cb_func_name, module->lib_path, dlerror());
                 goto err;
             }
         }
     }
 
+    plugin_manager_log(INFO, "plugin dynamic library '%s' dlopen success", module->lib_path);
+
     return module;
 
 err:
@@ -120,6 +125,43 @@ err:
     return NULL;
 }
 
+int plugin_manager_module_init(struct plugin_manager_module *module)
+{
+    struct timespec start;
+    struct timespec end;
+
+    clock_gettime(CLOCK_MONOTONIC, &start);
+    int ret = module->init_cb_ptr();
+    clock_gettime(CLOCK_MONOTONIC, &end);
+    if (ret == -1)
+    {
+        plugin_manager_log(ERROR, "dynamic library '%s' initialization failed", module->lib_path);
+        return -1;
+    }
+
+    long elapsed = (end.tv_sec - start.tv_sec) * 1000000 + (end.tv_nsec - start.tv_nsec) / 1000;
+    plugin_manager_log(INFO, "plugin dynamic library '%s' init success, using '%lld' us", module->lib_path, elapsed);
+
+    return 0;
+}
+
+void plugin_manager_module_exit(struct plugin_manager_module *module)
+{
+    struct timespec start;
+    struct timespec end;
+
+    if (module && module->exit_cb_ptr)
+    {
+        clock_gettime(CLOCK_MONOTONIC, &start);
+        module->exit_cb_ptr();
+        clock_gettime(CLOCK_MONOTONIC, &end);
+        module->exit_cb_ptr = NULL;
+
+        long elapsed = (end.tv_sec - start.tv_sec) * 1000000 + (end.tv_nsec - start.tv_nsec) / 1000;
+        plugin_manager_log(INFO, "plugin dynamic library '%s' exit success, using '%lld' us", module->lib_path, elapsed);
+    }
+}
+
 int plugin_manager_module_register(struct plugin_manager *plug_mgr, struct plugin_manager_module *module)
 {
     if (module && module->evcbs)
@@ -128,7 +170,7 @@ int plugin_manager_module_register(struct plugin_manager *plug_mgr, struct plugi
         {
             struct plugin_manager_module_evcb *event_cb = &module->evcbs[i];
 
-            if (plugin_manager_register(plug_mgr, event_cb->session_name, event_cb->event, event_cb->event_cb_ptr) == -1)
+            if (plugin_manager_register(plug_mgr, event_cb->session_name, event_cb->event, event_cb->event_cb_ptr, module->error_cb_ptr) == -1)
             {
                 plugin_manager_log(ERROR, "dynamic library '%s' failed to register the event callback function of session '%s'", module->lib_path, event_cb->session_name);
                 return -1;
@@ -139,30 +181,23 @@ int plugin_manager_module_register(struct plugin_manager *plug_mgr, struct plugi
     return 0;
 }
 
-int plugin_manager_module_init(struct plugin_manager_module *module)
+void plugin_manager_module_dump(struct plugin_manager_module *module, struct plugin_manager_config *config)
 {
-    struct timespec start;
-    struct timespec end;
-
-    clock_gettime(CLOCK_MONOTONIC, &start);
-    int ret = module->init_cb_ptr();
-    if (ret == -1)
+    if (module)
     {
-        plugin_manager_log(ERROR, "dynamic library '%s' initialization failed", module->lib_path);
-        return -1;
+        plugin_manager_log(DEBUG, "[LIBRARY]    : %s, %p", config->plugin_section.lib_path, module->dl_handle);
+        plugin_manager_log(DEBUG, "[INIT_FUNC]  : %s, %p", config->plugin_section.init_func_name, module->init_cb_ptr);
+        plugin_manager_log(DEBUG, "[EXIT_FUNC]  : %s, %p", config->plugin_section.exit_func_name, module->exit_cb_ptr);
+        plugin_manager_log(DEBUG, "[ERROR_FUNC] : %s, %p", config->plugin_section.error_func_name, module->error_cb_ptr);
+
+        for (int i = 0; i < module->evcbs_num; i++)
+        {
+            struct session_section_config *session_config = &config->session_section[i];
+            struct plugin_manager_module_evcb *event_cb = &module->evcbs[i];
+
+            char event_str_buffer[1024] = {0};
+            session_event_type_int2str(event_cb->event, event_str_buffer, 1024);
+            plugin_manager_log(DEBUG, "[EVENT_FUNC] : %s, %p, %s, (%d: %s)", session_config->cb_func_name, event_cb->event_cb_ptr, event_cb->session_name, event_cb->event, event_str_buffer);
+        }
     }
-    clock_gettime(CLOCK_MONOTONIC, &end);
-
-    long elapsed = (end.tv_sec - start.tv_sec) * 1000000 + (end.tv_nsec - start.tv_nsec) / 1000;
-    plugin_manager_log(INFO, "plugin '%s' init success, using '%lld' us", module->lib_path, elapsed);
-
-    return 0;
-}
-
-void plugin_manager_module_exit(struct plugin_manager_module *module)
-{
-    if (module && module->exit_cb_ptr)
-    {
-        module->exit_cb_ptr();
-    }
-}
+}
\ No newline at end of file
diff --git a/src/plugin_manager/plugin_manager_module.h b/src/plugin_manager/plugin_manager_module.h
index d765b4a..0bc468c 100644
--- a/src/plugin_manager/plugin_manager_module.h
+++ b/src/plugin_manager/plugin_manager_module.h
@@ -1,12 +1,26 @@
-#pragma once
+#ifndef _PLUGIN_MANAGER_MODULE_H
+#define _PLUGIN_MANAGER_MODULE_H
+
+#ifdef __cpluscplus
+extern "C"
+{
+#endif
 
 #include "plugin_manager_config.h"
 
 struct plugin_manager_module;
 
 struct plugin_manager_module *plugin_manager_module_open(struct plugin_manager_config *config);
-int plugin_manager_module_register(struct plugin_manager *plug_mgr, struct plugin_manager_module *module);
-int plugin_manager_module_init(struct plugin_manager_module *module);
+void plugin_manager_module_close(struct plugin_manager_module *module);
 
+int plugin_manager_module_init(struct plugin_manager_module *module);
 void plugin_manager_module_exit(struct plugin_manager_module *module);
-void plugin_manager_module_close(struct plugin_manager_module *module);
\ No newline at end of file
+
+void plugin_manager_module_dump(struct plugin_manager_module *module, struct plugin_manager_config *config);
+int plugin_manager_module_register(struct plugin_manager *plug_mgr, struct plugin_manager_module *module);
+
+#ifdef __cpluscplus
+}
+#endif
+
+#endif
\ No newline at end of file
diff --git a/src/plugin_manager/plugin_manager_util.cpp b/src/plugin_manager/plugin_manager_util.cpp
index 1c4337d..08f903f 100644
--- a/src/plugin_manager/plugin_manager_util.cpp
+++ b/src/plugin_manager/plugin_manager_util.cpp
@@ -1,8 +1,11 @@
 #include <string.h>
-#include <stdlib.h>
 
 #include "plugin_manager_util.h"
 
+/******************************************************************************
+ * Malloc
+ ******************************************************************************/
+
 char *safe_dup(const char *str)
 {
 	if (str == NULL)
@@ -16,25 +19,81 @@ char *safe_dup(const char *str)
 	return dup;
 }
 
-void strcat_prefix_and_file(const char *prefix, const char *file, char *buff, int size)
+/******************************************************************************
+ * Session Event Type
+ ******************************************************************************/
+
+struct event_type_map
 {
-	char prefix_buffer[4096] = {0};
-	char file_buffer[4096] = {0};
-	char *ptr = NULL;
+	const char *type_str;
+	enum session_event_type type_int;
+};
 
-	memcpy(prefix_buffer, prefix, strlen(prefix));
-	memcpy(file_buffer, file, strlen(file));
-
-	if (prefix_buffer[strlen(prefix_buffer) - 1] != '/')
+static struct event_type_map evtype_map[] =
 	{
-		prefix_buffer[strlen(prefix_buffer)] = '/';
-	}
-	file_buffer[strcspn(file_buffer, "\r\n")] = 0;
+		{"SESSION_EVENT_UNKNOWN", SESSION_EVENT_UNKNOWN},
+		{"SESSION_EVENT_OPENING", SESSION_EVENT_OPENING},
+		{"SESSION_EVENT_RAWPKT", SESSION_EVENT_RAWPKT},
+		{"SESSION_EVENT_ORDPKT", SESSION_EVENT_ORDPKT},
+		{"SESSION_EVENT_META", SESSION_EVENT_META},
+		{"SESSION_EVENT_CLOSING", SESSION_EVENT_CLOSING},
+		{"SESSION_EVENT_ALL", SESSION_EVENT_ALL},
+};
 
-	ptr = file_buffer;
-	if (file_buffer[0] == '.' && file_buffer[1] == '/')
+enum session_event_type session_event_type_str2int(const char *evtype_str)
+{
+	enum session_event_type evtype_int = SESSION_EVENT_UNKNOWN;
+	int num = sizeof(evtype_map) / sizeof(evtype_map[0]);
+
+	char *buffer = safe_dup(evtype_str);
+	char *token = strtok(buffer, "|");
+	while (token)
 	{
-		ptr += 2;
+		for (int i = 0; i < num; i++)
+		{
+			if (strcmp(token, evtype_map[i].type_str) == 0)
+			{
+				evtype_int = (enum session_event_type)(evtype_int | evtype_map[i].type_int);
+			}
+		}
+		token = strtok(NULL, "|");
 	}
-	snprintf(buff, size, "%s%s", prefix_buffer, ptr);
-}
\ No newline at end of file
+	safe_free(buffer);
+
+	return evtype_int;
+}
+
+void session_event_type_int2str(enum session_event_type evtype_int, char *buffer, int size)
+{
+	int used = 0;
+	int num = sizeof(evtype_map) / sizeof(evtype_map[0]);
+
+	if (evtype_int == SESSION_EVENT_UNKNOWN)
+	{
+		snprintf(buffer, size, "%s", "SESSION_EVENT_UNKNOWN");
+		return;
+	}
+
+	if (evtype_int == SESSION_EVENT_ALL)
+	{
+		snprintf(buffer, size, "%s", "SESSION_EVENT_ALL");
+		return;
+	}
+
+	for (int i = 0; i < num; i++)
+	{
+		if (evtype_map[i].type_int & evtype_int)
+		{
+			if (evtype_map[i].type_int == SESSION_EVENT_ALL && evtype_int != SESSION_EVENT_ALL)
+			{
+				continue;
+			}
+			used += snprintf(buffer + used, size - used, "%s|", evtype_map[i].type_str);
+		}
+	}
+
+	if (used)
+	{
+		buffer[used - 1] = '\0';
+	}
+}
diff --git a/src/plugin_manager/plugin_manager_util.h b/src/plugin_manager/plugin_manager_util.h
index 9c6c0fb..13b85db 100644
--- a/src/plugin_manager/plugin_manager_util.h
+++ b/src/plugin_manager/plugin_manager_util.h
@@ -1,6 +1,15 @@
-#pragma once
+#ifndef _PLUGIN_MANAGER_UTIL_H
+#define _PLUGIN_MANAGER_UTIL_H
+
+#ifdef __cpluscplus
+extern "C"
+{
+#endif
 
 #include <stdio.h>
+#include <stdlib.h>
+
+#include "sdk/include/session.h"
 
 #define MAX_PLUGIN_NUM 512
 #define MAX_SESSION_NAME_LENGTH 32
@@ -55,7 +64,14 @@ enum plugin_manager_log_level
 #endif
 
 /******************************************************************************
- * Str
+ * Session Event Type
  ******************************************************************************/
 
-void strcat_prefix_and_file(const char *prefix, const char *file, char *buff, int size);
+enum session_event_type session_event_type_str2int(const char *evtype_str);
+void session_event_type_int2str(enum session_event_type evtype_int, char *buffer, int size);
+
+#ifdef __cpluscplus
+}
+#endif
+
+#endif
\ No newline at end of file
diff --git a/src/plugin_manager/test/CMakeLists.txt b/src/plugin_manager/test/CMakeLists.txt
index 7a1a880..82bc6d6 100644
--- a/src/plugin_manager/test/CMakeLists.txt
+++ b/src/plugin_manager/test/CMakeLists.txt
@@ -11,6 +11,9 @@ target_link_libraries(
   dl
 )
 
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wl,--export-dynamic")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wl,--export-dynamic")
+
 include(GoogleTest)
 gtest_discover_tests(gtest_plugin_manager)
 
diff --git a/src/plugin_manager/test/gtest_plugin_manager.cpp b/src/plugin_manager/test/gtest_plugin_manager.cpp
index 8107b41..efc95b2 100644
--- a/src/plugin_manager/test/gtest_plugin_manager.cpp
+++ b/src/plugin_manager/test/gtest_plugin_manager.cpp
@@ -1,23 +1,150 @@
 #include <gtest/gtest.h>
 
+#include "sdk/include/session.h"
+
+#include "../plugin_manager_util.h"
 #include "../plugin_manager_config.h"
+#include "../plugin_manager_module.h"
 #include "../plugin_manager.h"
 #include "session_manager.h"
 
-TEST(PLUGIN_MANAGER_TEST, plugin_manager_config_HTTP)
+/******************************************************************************
+ * Test plugin_mangager_util API
+ ******************************************************************************/
+
+#if 1
+TEST(PLUGIN_MANAGER_TEST, plugin_mangager_util_int2str)
+{
+	enum session_event_type type_int;
+	char buffer[1024] = {0};
+
+	type_int = SESSION_EVENT_UNKNOWN;
+	memset(buffer, 0, sizeof(buffer));
+	session_event_type_int2str(type_int, buffer, sizeof(buffer));
+	EXPECT_STREQ(buffer, "SESSION_EVENT_UNKNOWN");
+
+	type_int = SESSION_EVENT_OPENING;
+	memset(buffer, 0, sizeof(buffer));
+	session_event_type_int2str(type_int, buffer, sizeof(buffer));
+	EXPECT_STREQ(buffer, "SESSION_EVENT_OPENING");
+
+	type_int = SESSION_EVENT_RAWPKT;
+	memset(buffer, 0, sizeof(buffer));
+	session_event_type_int2str(type_int, buffer, sizeof(buffer));
+	EXPECT_STREQ(buffer, "SESSION_EVENT_RAWPKT");
+
+	type_int = SESSION_EVENT_ORDPKT;
+	memset(buffer, 0, sizeof(buffer));
+	session_event_type_int2str(type_int, buffer, sizeof(buffer));
+	EXPECT_STREQ(buffer, "SESSION_EVENT_ORDPKT");
+
+	type_int = SESSION_EVENT_META;
+	memset(buffer, 0, sizeof(buffer));
+	session_event_type_int2str(type_int, buffer, sizeof(buffer));
+	EXPECT_STREQ(buffer, "SESSION_EVENT_META");
+
+	type_int = SESSION_EVENT_CLOSING;
+	memset(buffer, 0, sizeof(buffer));
+	session_event_type_int2str(type_int, buffer, sizeof(buffer));
+	EXPECT_STREQ(buffer, "SESSION_EVENT_CLOSING");
+
+	type_int = SESSION_EVENT_ALL;
+	memset(buffer, 0, sizeof(buffer));
+	session_event_type_int2str(type_int, buffer, sizeof(buffer));
+	EXPECT_STREQ(buffer, "SESSION_EVENT_ALL");
+
+	type_int = (enum session_event_type)(SESSION_EVENT_OPENING | SESSION_EVENT_RAWPKT);
+	memset(buffer, 0, sizeof(buffer));
+	session_event_type_int2str(type_int, buffer, sizeof(buffer));
+	EXPECT_STREQ(buffer, "SESSION_EVENT_OPENING|SESSION_EVENT_RAWPKT");
+
+	type_int = (enum session_event_type)(SESSION_EVENT_OPENING | SESSION_EVENT_RAWPKT | SESSION_EVENT_ORDPKT);
+	memset(buffer, 0, sizeof(buffer));
+	session_event_type_int2str(type_int, buffer, sizeof(buffer));
+	EXPECT_STREQ(buffer, "SESSION_EVENT_OPENING|SESSION_EVENT_RAWPKT|SESSION_EVENT_ORDPKT");
+
+	type_int = (enum session_event_type)(SESSION_EVENT_OPENING | SESSION_EVENT_RAWPKT | SESSION_EVENT_ORDPKT | SESSION_EVENT_META);
+	memset(buffer, 0, sizeof(buffer));
+	session_event_type_int2str(type_int, buffer, sizeof(buffer));
+	EXPECT_STREQ(buffer, "SESSION_EVENT_OPENING|SESSION_EVENT_RAWPKT|SESSION_EVENT_ORDPKT|SESSION_EVENT_META");
+
+	type_int = (enum session_event_type)(SESSION_EVENT_OPENING | SESSION_EVENT_RAWPKT | SESSION_EVENT_ORDPKT | SESSION_EVENT_META | SESSION_EVENT_CLOSING);
+	memset(buffer, 0, sizeof(buffer));
+	session_event_type_int2str(type_int, buffer, sizeof(buffer));
+	EXPECT_STREQ(buffer, "SESSION_EVENT_ALL");
+}
+#endif
+
+#if 1
+TEST(PLUGIN_MANAGER_TEST, plugin_mangager_util_str2int)
+{
+	enum session_event_type type_int;
+
+	const char *type_str1 = "SESSION_EVENT_UNKNOWN";
+	const char *type_str2 = "SESSION_EVENT_OPENING";
+	const char *type_str3 = "SESSION_EVENT_RAWPKT";
+	const char *type_str4 = "SESSION_EVENT_ORDPKT";
+	const char *type_str5 = "SESSION_EVENT_META";
+	const char *type_str6 = "SESSION_EVENT_CLOSING";
+	const char *type_str7 = "SESSION_EVENT_ALL";
+	const char *type_str8 = "SESSION_EVENT_OPENING|SESSION_EVENT_RAWPKT";
+	const char *type_str9 = "SESSION_EVENT_OPENING|SESSION_EVENT_RAWPKT|SESSION_EVENT_ORDPKT";
+	const char *type_str10 = "SESSION_EVENT_OPENING|SESSION_EVENT_RAWPKT|SESSION_EVENT_ORDPKT|SESSION_EVENT_META";
+	const char *type_str11 = "SESSION_EVENT_OPENING|SESSION_EVENT_RAWPKT|SESSION_EVENT_ORDPKT|SESSION_EVENT_META|SESSION_EVENT_CLOSING";
+
+	type_int = session_event_type_str2int(type_str1);
+	EXPECT_TRUE(type_int == SESSION_EVENT_UNKNOWN);
+
+	type_int = session_event_type_str2int(type_str2);
+	EXPECT_TRUE(type_int == SESSION_EVENT_OPENING);
+
+	type_int = session_event_type_str2int(type_str3);
+	EXPECT_TRUE(type_int == SESSION_EVENT_RAWPKT);
+
+	type_int = session_event_type_str2int(type_str4);
+	EXPECT_TRUE(type_int == SESSION_EVENT_ORDPKT);
+
+	type_int = session_event_type_str2int(type_str5);
+	EXPECT_TRUE(type_int == SESSION_EVENT_META);
+
+	type_int = session_event_type_str2int(type_str6);
+	EXPECT_TRUE(type_int == SESSION_EVENT_CLOSING);
+
+	type_int = session_event_type_str2int(type_str7);
+	EXPECT_TRUE(type_int == SESSION_EVENT_ALL);
+
+	type_int = session_event_type_str2int(type_str8);
+	EXPECT_TRUE(type_int == (SESSION_EVENT_OPENING | SESSION_EVENT_RAWPKT));
+
+	type_int = session_event_type_str2int(type_str9);
+	EXPECT_TRUE(type_int == (SESSION_EVENT_OPENING | SESSION_EVENT_RAWPKT | SESSION_EVENT_ORDPKT));
+
+	type_int = session_event_type_str2int(type_str10);
+	EXPECT_TRUE(type_int == (SESSION_EVENT_OPENING | SESSION_EVENT_RAWPKT | SESSION_EVENT_ORDPKT | SESSION_EVENT_META));
+
+	type_int = session_event_type_str2int(type_str11);
+	EXPECT_TRUE(type_int == SESSION_EVENT_ALL);
+}
+#endif
+
+/******************************************************************************
+ * Test plugin_mangager_config API
+ ******************************************************************************/
+
+#if 1
+TEST(PLUGIN_MANAGER_TEST, plugin_mangager_config_HTTP)
 {
-	char prefix_path[] = "./";
 	char file_path[] = "./plugins_config/http_event_plugin/http_event_plugin.inf";
 
 	struct plugin_manager_config *config = plugin_mangager_config_create();
 	EXPECT_TRUE(config != nullptr);
 
-	EXPECT_TRUE(plugin_mangager_config_parse(config, prefix_path, file_path) == 0);
+	EXPECT_TRUE(plugin_mangager_config_parse(config, file_path) == 0);
 
-	EXPECT_STREQ(config->prefix_path, "./");
 	EXPECT_STREQ(config->file_path, "./plugins_config/http_event_plugin/http_event_plugin.inf");
 	EXPECT_STREQ(config->plugin_section.init_func_name, "http_event_plugin_init");
 	EXPECT_STREQ(config->plugin_section.exit_func_name, "http_event_plugin_exit");
+	EXPECT_STREQ(config->plugin_section.error_func_name, "http_event_plugin_error");
 	EXPECT_STREQ(config->plugin_section.lib_path, "./test_plugins/plugins_library/http_event_plugin_test.so");
 
 	EXPECT_TRUE(config->session_section_num == 1);
@@ -28,127 +155,421 @@ TEST(PLUGIN_MANAGER_TEST, plugin_manager_config_HTTP)
 	plugin_mangager_config_dump(config);
 	plugin_mangager_config_destory(config);
 }
+#endif
 
-TEST(PLUGIN_MANAGER_TEST, plugin_manager_config_CUSTOM)
+#if 1
+TEST(PLUGIN_MANAGER_TEST, plugin_mangager_config_CUSTOM)
 {
-	char prefix_path[] = "./";
 	char file_path[] = "./plugins_config/custom_event_plugin/custom_event_plugin.inf";
 
 	struct plugin_manager_config *config = plugin_mangager_config_create();
 	EXPECT_TRUE(config != nullptr);
 
-	EXPECT_TRUE(plugin_mangager_config_parse(config, prefix_path, file_path) == 0);
+	EXPECT_TRUE(plugin_mangager_config_parse(config, file_path) == 0);
 
-	EXPECT_STREQ(config->prefix_path, "./");
 	EXPECT_STREQ(config->file_path, "./plugins_config/custom_event_plugin/custom_event_plugin.inf");
-	EXPECT_STREQ(config->plugin_section.init_func_name, "custom_plugin_init");
-	EXPECT_STREQ(config->plugin_section.exit_func_name, "custom_plugin_exit");
+	EXPECT_STREQ(config->plugin_section.init_func_name, "custom_event_plugin_init");
+	EXPECT_STREQ(config->plugin_section.exit_func_name, "custom_event_plugin_exit");
+	EXPECT_STREQ(config->plugin_section.error_func_name, "custom_event_plugin_error");
 	EXPECT_STREQ(config->plugin_section.lib_path, "./test_plugins/plugins_library/custom_event_plugin_test.so");
 
-	EXPECT_TRUE(config->session_section_num == 2);
+	EXPECT_TRUE(config->session_section_num == 3);
 	EXPECT_STREQ(config->session_section[0].session_name, "TCP");
-	EXPECT_STREQ(config->session_section[0].cb_func_name, "custom_plugin_tcp_entry");
+	EXPECT_STREQ(config->session_section[0].cb_func_name, "custom_event_plugin_tcp_entry");
 	EXPECT_TRUE(config->session_section[0].event == (0x01 << 1 | 0x01 << 2 | 0x01 << 3 | 0x01 << 4 | 0x01 << 5));
-	EXPECT_STREQ(config->session_section[1].session_name, "CUSTOM");
-	EXPECT_STREQ(config->session_section[1].cb_func_name, "custom_plugin_custom_entry");
-	EXPECT_TRUE(config->session_section[1].event == (0x01 << 1) | (0x01 << 3) | (0x01 << 5));
+
+	EXPECT_STREQ(config->session_section[1].session_name, "HTTP");
+	EXPECT_STREQ(config->session_section[1].cb_func_name, "custom_event_plugin_http_entry");
+	EXPECT_TRUE(config->session_section[1].event == (0x01 << 1 | 0x01 << 2 | 0x01 << 3 | 0x01 << 4 | 0x01 << 5));
+
+	EXPECT_STREQ(config->session_section[2].session_name, "CUSTOM");
+	EXPECT_STREQ(config->session_section[2].cb_func_name, "custom_event_plugin_custom_entry");
+	EXPECT_TRUE(config->session_section[2].event == (0x01 << 1) | (0x01 << 3) | (0x01 << 5));
 
 	plugin_mangager_config_dump(config);
 	plugin_mangager_config_destory(config);
 }
+#endif
 
+/******************************************************************************
+ * Test plugin_mangager_module API
+ ******************************************************************************/
+
+#if 1
+TEST(PLUGIN_MANAGER_TEST, plugin_mangager_module_HTTP)
+{
+	char file_path[] = "./plugins_config/http_event_plugin/http_event_plugin.inf";
+
+	struct plugin_manager_config *config = plugin_mangager_config_create();
+	EXPECT_TRUE(config != nullptr);
+	EXPECT_TRUE(plugin_mangager_config_parse(config, file_path) == 0);
+
+	struct plugin_manager_module *module = plugin_manager_module_open(config);
+	EXPECT_TRUE(module != nullptr);
+	EXPECT_TRUE(plugin_manager_module_init(module) == 0);
+	plugin_manager_module_dump(module, config);
+	plugin_manager_module_exit(module);
+	plugin_manager_module_close(module);
+
+	plugin_mangager_config_destory(config);
+}
+#endif
+
+#if 1
+TEST(PLUGIN_MANAGER_TEST, plugin_mangager_module_CUSTOM)
+{
+	char file_path[] = "./plugins_config/custom_event_plugin/custom_event_plugin.inf";
+
+	struct plugin_manager_config *config = plugin_mangager_config_create();
+	EXPECT_TRUE(config != nullptr);
+	EXPECT_TRUE(plugin_mangager_config_parse(config, file_path) == 0);
+
+	struct plugin_manager_module *module = plugin_manager_module_open(config);
+	EXPECT_TRUE(module != nullptr);
+	EXPECT_TRUE(plugin_manager_module_init(module) == 0);
+	plugin_manager_module_dump(module, config);
+	plugin_manager_module_exit(module);
+	plugin_manager_module_close(module);
+
+	plugin_mangager_config_destory(config);
+}
+#endif
+
+/******************************************************************************
+ * Test plugin_mangager API
+ ******************************************************************************/
+
+#if 1
 TEST(PLUGIN_MANAGER_TEST, plugin_manager_load)
 {
-	char prefix_path[] = "./";
 	char file_path[] = "./plugins_config/plugins.inf";
 
 	struct plugin_manager *plug_mgr = plugin_manager_create();
 	EXPECT_TRUE(plug_mgr != nullptr);
-	EXPECT_TRUE(plugin_manager_load(plug_mgr, prefix_path, file_path) == 0);
-
-	plugin_manager_unload(plug_mgr);
-	plugin_manager_destory(plug_mgr);
-}
-
-TEST(PLUGIN_MANAGER_TEST, plugin_manager_dispatch_HTTP)
-{
-	char prefix_path[] = "./";
-	char file_path[] = "./plugins_config/plugins.inf";
-
-	const char *session_name = "HTTP";
-	struct stellar_session session;
-	session.name = session_name;
-	struct stellar_session_event_data event_data;
-	event_data.s = &session;
-	event_data.plugin_ctx = NULL; // must be init to NULL
-	struct stellar_event event;
-	event.session_event_data = &event_data;
-
-	struct plugin_manager *plug_mgr = plugin_manager_create();
-	EXPECT_TRUE(plug_mgr != nullptr);
-	EXPECT_TRUE(plugin_manager_load(plug_mgr, prefix_path, file_path) == 0);
-
-	event_data.type = SESSION_EVENT_OPENING;
-	plugin_manager_dispatch(plug_mgr, &event);
-
-	event_data.type = SESSION_EVENT_RAWPKT;
-	plugin_manager_dispatch(plug_mgr, &event);
-
-	event_data.type = SESSION_EVENT_ORDPKT;
-	plugin_manager_dispatch(plug_mgr, &event);
-
-	event_data.type = SESSION_EVENT_META;
-	plugin_manager_dispatch(plug_mgr, &event);
-
-	event_data.type = SESSION_EVENT_CLOSING;
-	plugin_manager_dispatch(plug_mgr, &event);
-
-	event_data.type = SESSION_EVENT_ALL;
-	plugin_manager_dispatch(plug_mgr, &event);
+	EXPECT_TRUE(plugin_manager_load(plug_mgr, file_path) == 0);
 
 	plugin_manager_unload(plug_mgr);
 	plugin_manager_destory(plug_mgr);
 }
+#endif
 
+#if 1
+// only SESSION_EVENT_OPENING | SESSION_EVENT_ORDPKT | SESSION_EVENT_CLOSING can trigger event callback
 TEST(PLUGIN_MANAGER_TEST, plugin_manager_dispatch_CUSTOM)
 {
-	char prefix_path[] = "./";
+	/*
+	 * [SESSION_NAME.CUSTOM]
+	 * SESSION_EVENT_TYPE=["SESSION_EVENT_OPENING","SESSION_EVENT_ORDPKT","SESSION_EVENT_CLOSING"]
+	 * SESSION_EVENT_CALLBACK="custom_event_plugin_custom_entry"
+	 */
+
+	struct custom_session_pme
+	{
+		char data[64];
+		int flags;
+		/* data */
+	};
+
+	struct custom_session_pme *pme;
 	char file_path[] = "./plugins_config/plugins.inf";
 
 	const char *session_name = "CUSTOM";
+
 	struct stellar_session session;
 	session.name = session_name;
+
 	struct stellar_session_event_data event_data;
 	event_data.s = &session;
 	event_data.plugin_ctx = NULL; // must be init to NULL
+
 	struct stellar_event event;
 	event.session_event_data = &event_data;
 
+	session.event_data = &event_data; // must be set
+
 	struct plugin_manager *plug_mgr = plugin_manager_create();
 	EXPECT_TRUE(plug_mgr != nullptr);
-	EXPECT_TRUE(plugin_manager_load(plug_mgr, prefix_path, file_path) == 0);
+	EXPECT_TRUE(plugin_manager_load(plug_mgr, file_path) == 0);
 
+	// run evencb
 	event_data.type = SESSION_EVENT_OPENING;
 	plugin_manager_dispatch(plug_mgr, &event);
+	pme = (struct custom_session_pme *)pm_session_get_plugin_pme(&session);
+	EXPECT_TRUE(pme->flags == SESSION_EVENT_OPENING);
+	EXPECT_STREQ(pme->data, "custom_event_plugin_custom_entry");
 
+	// unrun evencb
 	event_data.type = SESSION_EVENT_RAWPKT;
 	plugin_manager_dispatch(plug_mgr, &event);
+	pme = (struct custom_session_pme *)pm_session_get_plugin_pme(&session);
+	EXPECT_TRUE(pme->flags == SESSION_EVENT_OPENING);
+	EXPECT_STREQ(pme->data, "custom_event_plugin_custom_entry");
 
+	// run evencb
 	event_data.type = SESSION_EVENT_ORDPKT;
 	plugin_manager_dispatch(plug_mgr, &event);
+	pme = (struct custom_session_pme *)pm_session_get_plugin_pme(&session);
+	EXPECT_TRUE(pme->flags == SESSION_EVENT_ORDPKT);
+	EXPECT_STREQ(pme->data, "custom_event_plugin_custom_entry");
 
+	// unrun evencb
 	event_data.type = SESSION_EVENT_META;
 	plugin_manager_dispatch(plug_mgr, &event);
+	pme = (struct custom_session_pme *)pm_session_get_plugin_pme(&session);
+	EXPECT_TRUE(pme->flags == SESSION_EVENT_ORDPKT);
+	EXPECT_STREQ(pme->data, "custom_event_plugin_custom_entry");
 
+	// run evencb
 	event_data.type = SESSION_EVENT_CLOSING;
 	plugin_manager_dispatch(plug_mgr, &event);
+	EXPECT_TRUE(stellar_session_get_plugin_ctx(&session) == nullptr);
 
+	// run evencb
 	event_data.type = SESSION_EVENT_ALL;
 	plugin_manager_dispatch(plug_mgr, &event);
+	EXPECT_TRUE(stellar_session_get_plugin_ctx(&session) == nullptr);
 
 	plugin_manager_unload(plug_mgr);
 	plugin_manager_destory(plug_mgr);
 }
+#endif
+
+#if 1
+// ALL SESSION_EVENT can trigger event callback
+TEST(PLUGIN_MANAGER_TEST, plugin_manager_dispatch_TCP)
+{
+	/*
+	 * [SESSION_NAME.TCP]
+	 * SESSION_EVENT_TYPE=["SESSION_EVENT_ALL"]
+	 * SESSION_EVENT_CALLBACK="custom_event_plugin_tcp_entry"
+	 */
+
+	struct tcp_session_pme
+	{
+		char data[64];
+		int flags;
+		/* data */
+	};
+	struct tcp_session_pme *pme;
+
+	char file_path[] = "./plugins_config/plugins.inf";
+
+	const char *session_name = "TCP";
+
+	struct stellar_session session;
+	session.name = session_name;
+
+	struct stellar_session_event_data event_data;
+	event_data.s = &session;
+	event_data.plugin_ctx = NULL; // must be init to NULL
+
+	struct stellar_event event;
+	event.session_event_data = &event_data;
+
+	session.event_data = &event_data; // must be set
+
+	struct plugin_manager *plug_mgr = plugin_manager_create();
+	EXPECT_TRUE(plug_mgr != nullptr);
+	EXPECT_TRUE(plugin_manager_load(plug_mgr, file_path) == 0);
+
+	// run evencb
+	event_data.type = SESSION_EVENT_OPENING;
+	plugin_manager_dispatch(plug_mgr, &event);
+	pme = (struct tcp_session_pme *)pm_session_get_plugin_pme(&session);
+	EXPECT_TRUE(pme->flags == SESSION_EVENT_OPENING);
+	EXPECT_STREQ(pme->data, "tcp***");
+
+	// run evencb
+	event_data.type = SESSION_EVENT_RAWPKT;
+	plugin_manager_dispatch(plug_mgr, &event);
+	pme = (struct tcp_session_pme *)pm_session_get_plugin_pme(&session);
+	EXPECT_TRUE(pme->flags == SESSION_EVENT_RAWPKT);
+	EXPECT_STREQ(pme->data, "tcp***");
+
+	// run evencb
+	event_data.type = SESSION_EVENT_ORDPKT;
+	plugin_manager_dispatch(plug_mgr, &event);
+	pme = (struct tcp_session_pme *)pm_session_get_plugin_pme(&session);
+	EXPECT_TRUE(pme->flags == SESSION_EVENT_ORDPKT);
+	EXPECT_STREQ(pme->data, "tcp***");
+
+	// run evencb
+	event_data.type = SESSION_EVENT_META;
+	plugin_manager_dispatch(plug_mgr, &event);
+	pme = (struct tcp_session_pme *)pm_session_get_plugin_pme(&session);
+	EXPECT_TRUE(pme->flags == SESSION_EVENT_META);
+	EXPECT_STREQ(pme->data, "tcp***");
+
+	// run evencb
+	event_data.type = SESSION_EVENT_CLOSING;
+	plugin_manager_dispatch(plug_mgr, &event);
+	EXPECT_TRUE(stellar_session_get_plugin_ctx(&session) == nullptr);
+
+	// run evencb
+	event_data.type = SESSION_EVENT_ALL;
+	plugin_manager_dispatch(plug_mgr, &event);
+	EXPECT_TRUE(stellar_session_get_plugin_ctx(&session) == nullptr);
+
+	plugin_manager_unload(plug_mgr);
+	plugin_manager_destory(plug_mgr);
+}
+#endif
+
+#if 1
+// http_event_plugin_entry + SESSION_EVENT_RAWPKT ==> pm_session_dettach_me
+TEST(PLUGIN_MANAGER_TEST, plugin_manager_dispatch_HTTP_dettach_me)
+{
+	/*
+	 * [SESSION_NAME.HTTP]
+	 * SESSION_EVENT_TYPE=["SESSION_EVENT_ALL"]
+	 * SESSION_EVENT_CALLBACK="http_event_plugin_entry"
+	 *
+	 * [SESSION_NAME.HTTP]
+	 * SESSION_EVENT_TYPE=["SESSION_EVENT_ALL"]
+	 * SESSION_EVENT_CALLBACK="custom_event_plugin_http_entry"
+	 */
+
+	struct http_session_pme
+	{
+		char data[64];
+		int flags;
+		/* data */;
+	};
+
+	struct http_session_pme *pme = NULL;
+	char file_path[] = "./plugins_config/plugins.inf";
+
+	const char *session_name = "HTTP";
+
+	struct stellar_session session;
+	session.name = session_name;
+
+	struct stellar_session_event_data event_data;
+	event_data.s = &session;
+	event_data.plugin_ctx = NULL; // must be init to NULL
+
+	struct stellar_event event;
+	event.session_event_data = &event_data;
+
+	session.event_data = &event_data; // must be set
+
+	struct plugin_manager *plug_mgr = plugin_manager_create();
+	EXPECT_TRUE(plug_mgr != nullptr);
+	EXPECT_TRUE(plugin_manager_load(plug_mgr, file_path) == 0);
+
+	// run evencb
+	event_data.type = SESSION_EVENT_OPENING;
+	plugin_manager_dispatch(plug_mgr, &event);
+	pme = (struct http_session_pme *)pm_session_get_plugin_pme(&session);
+	EXPECT_TRUE(pme->flags == SESSION_EVENT_OPENING);
+	EXPECT_STREQ(pme->data, "custom_event_plugin_http_entry");
+
+	// http_event_plugin_entry + SESSION_EVENT_RAWPKT ==> pm_session_dettach_me
+	event_data.type = SESSION_EVENT_RAWPKT;
+	plugin_manager_dispatch(plug_mgr, &event);
+	pme = (struct http_session_pme *)pm_session_get_plugin_pme(&session);
+	EXPECT_TRUE(pme->flags == SESSION_EVENT_RAWPKT);
+	EXPECT_STREQ(pme->data, "custom_event_plugin_http_entry");
+
+	// run evencb
+	event_data.type = SESSION_EVENT_META;
+	plugin_manager_dispatch(plug_mgr, &event);
+	pme = (struct http_session_pme *)pm_session_get_plugin_pme(&session);
+	EXPECT_TRUE(pme->flags == SESSION_EVENT_META);
+	EXPECT_STREQ(pme->data, "custom_event_plugin_http_entry");
+
+	// run evencb
+	event_data.type = SESSION_EVENT_CLOSING;
+	plugin_manager_dispatch(plug_mgr, &event);
+	EXPECT_TRUE(stellar_session_get_plugin_ctx(&session) == nullptr);
+
+	// run evencb
+	event_data.type = SESSION_EVENT_ALL;
+	plugin_manager_dispatch(plug_mgr, &event);
+	EXPECT_TRUE(stellar_session_get_plugin_ctx(&session) == nullptr);
+
+	plugin_manager_unload(plug_mgr);
+	plugin_manager_destory(plug_mgr);
+}
+#endif
+
+#if 1
+// http_event_plugin_entry + SESSION_EVENT_ORDPKT ==> pm_session_dettach_others
+TEST(PLUGIN_MANAGER_TEST, plugin_manager_dispatch_HTTP_dettach_other)
+{
+	/*
+	 * [SESSION_NAME.HTTP]
+	 * SESSION_EVENT_TYPE=["SESSION_EVENT_ALL"]
+	 * SESSION_EVENT_CALLBACK="http_event_plugin_entry"
+	 *
+	 * [SESSION_NAME.HTTP]
+	 * SESSION_EVENT_TYPE=["SESSION_EVENT_ALL"]
+	 * SESSION_EVENT_CALLBACK="custom_event_plugin_http_entry"
+	 */
+
+	struct http_session_pme
+	{
+		char data[64];
+		int flags;
+		/* data */;
+	};
+
+	struct http_session_pme *pme = NULL;
+	char file_path[] = "./plugins_config/plugins.inf";
+
+	const char *session_name = "HTTP";
+
+	struct stellar_session session;
+	session.name = session_name;
+
+	struct stellar_session_event_data event_data;
+	event_data.s = &session;
+	event_data.plugin_ctx = NULL; // must be init to NULL
+
+	struct stellar_event event;
+	event.session_event_data = &event_data;
+
+	session.event_data = &event_data; // must be set
+
+	struct plugin_manager *plug_mgr = plugin_manager_create();
+	EXPECT_TRUE(plug_mgr != nullptr);
+	EXPECT_TRUE(plugin_manager_load(plug_mgr, file_path) == 0);
+
+	// run evencb
+	event_data.type = SESSION_EVENT_OPENING;
+	plugin_manager_dispatch(plug_mgr, &event);
+	pme = (struct http_session_pme *)pm_session_get_plugin_pme(&session);
+	EXPECT_TRUE(pme->flags == SESSION_EVENT_OPENING);
+	EXPECT_STREQ(pme->data, "custom_event_plugin_http_entry");
+
+	// http_event_plugin_entry + SESSION_EVENT_ORDPKT ==> pm_session_dettach_others
+	event_data.type = SESSION_EVENT_ORDPKT;
+	plugin_manager_dispatch(plug_mgr, &event);
+	pme = (struct http_session_pme *)pm_session_get_plugin_pme(&session);
+	EXPECT_TRUE(pme->flags == SESSION_EVENT_ORDPKT);
+	EXPECT_STREQ(pme->data, "http_event_plugin_entry");
+
+	// run evencb
+	event_data.type = SESSION_EVENT_META;
+	plugin_manager_dispatch(plug_mgr, &event);
+	pme = (struct http_session_pme *)pm_session_get_plugin_pme(&session);
+	EXPECT_TRUE(pme->flags == SESSION_EVENT_META);
+	EXPECT_STREQ(pme->data, "http_event_plugin_entry");
+
+	// run evencb
+	event_data.type = SESSION_EVENT_CLOSING;
+	plugin_manager_dispatch(plug_mgr, &event);
+	EXPECT_TRUE(stellar_session_get_plugin_ctx(&session) == nullptr);
+
+	// run evencb
+	event_data.type = SESSION_EVENT_ALL;
+	plugin_manager_dispatch(plug_mgr, &event);
+	EXPECT_TRUE(stellar_session_get_plugin_ctx(&session) == nullptr);
+
+	plugin_manager_unload(plug_mgr);
+	plugin_manager_destory(plug_mgr);
+}
+#endif
 
 int main(int argc, char **argv)
 {
diff --git a/src/plugin_manager/test/test_plugins/plugins_config/custom_event_plugin/custom_event_plugin.inf b/src/plugin_manager/test/test_plugins/plugins_config/custom_event_plugin/custom_event_plugin.inf
index 26ba914..5df88aa 100644
--- a/src/plugin_manager/test/test_plugins/plugins_config/custom_event_plugin/custom_event_plugin.inf
+++ b/src/plugin_manager/test/test_plugins/plugins_config/custom_event_plugin/custom_event_plugin.inf
@@ -1,14 +1,19 @@
 [PLUGINFO]
-INIT_FUNC="custom_plugin_init"
-EXIT_FUNC="custom_plugin_exit"
+INIT_FUNC="custom_event_plugin_init"
+EXIT_FUNC="custom_event_plugin_exit"
+ERROR_FUNC="custom_event_plugin_error"
 LIBRARY_PATH="./test_plugins/plugins_library/custom_event_plugin_test.so"
 
 # Support SESSION_EVENT_TYPE: "SESSION_EVENT_OPENING", "SESSION_EVENT_RAWPKT", "SESSION_EVENT_ORDPKT", "SESSION_EVENT_META", "SESSION_EVENT_CLOSING", "SESSION_EVENT_ALL"
 
 [SESSION_NAME.TCP]
 SESSION_EVENT_TYPE=["SESSION_EVENT_ALL"]
-SESSION_EVENT_CALLBACK="custom_plugin_tcp_entry"
+SESSION_EVENT_CALLBACK="custom_event_plugin_tcp_entry"
+
+[SESSION_NAME.HTTP]
+SESSION_EVENT_TYPE=["SESSION_EVENT_ALL"]
+SESSION_EVENT_CALLBACK="custom_event_plugin_http_entry"
 
 [SESSION_NAME.CUSTOM]
 SESSION_EVENT_TYPE=["SESSION_EVENT_OPENING","SESSION_EVENT_ORDPKT","SESSION_EVENT_CLOSING"]
-SESSION_EVENT_CALLBACK="custom_plugin_custom_entry"
\ No newline at end of file
+SESSION_EVENT_CALLBACK="custom_event_plugin_custom_entry"
\ No newline at end of file
diff --git a/src/plugin_manager/test/test_plugins/plugins_config/http_event_plugin/http_event_plugin.inf b/src/plugin_manager/test/test_plugins/plugins_config/http_event_plugin/http_event_plugin.inf
index 1dd124b..cf0d16b 100644
--- a/src/plugin_manager/test/test_plugins/plugins_config/http_event_plugin/http_event_plugin.inf
+++ b/src/plugin_manager/test/test_plugins/plugins_config/http_event_plugin/http_event_plugin.inf
@@ -1,6 +1,7 @@
 [PLUGINFO]
 INIT_FUNC="http_event_plugin_init"
 EXIT_FUNC="http_event_plugin_exit"
+ERROR_FUNC="http_event_plugin_error"
 LIBRARY_PATH="./test_plugins/plugins_library/http_event_plugin_test.so"
 
 # Support SESSION_EVENT_TYPE: "SESSION_EVENT_OPENING", "SESSION_EVENT_RAWPKT", "SESSION_EVENT_ORDPKT", "SESSION_EVENT_META", "SESSION_EVENT_CLOSING", "SESSION_EVENT_ALL"
diff --git a/src/plugin_manager/test/test_plugins/plugins_library/custom_event_plugin.cpp b/src/plugin_manager/test/test_plugins/plugins_library/custom_event_plugin.cpp
index 0d7f1c4..fbeed57 100644
--- a/src/plugin_manager/test/test_plugins/plugins_library/custom_event_plugin.cpp
+++ b/src/plugin_manager/test/test_plugins/plugins_library/custom_event_plugin.cpp
@@ -2,9 +2,9 @@
 #include "packet.h"
 #include "plugin.h"
 
-#include <stddef.h>
 #include <stdlib.h>
 #include <stdio.h>
+#include <string.h>
 
 static char *g_handler = NULL;
 
@@ -13,30 +13,214 @@ static void *custom_decode(const char *payload, uint16_t len, void **pme)
 	return NULL;
 }
 
-extern "C" void custom_plugin_tcp_entry(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
+struct tcp_session_pme
 {
-	char **per_session_pme = (char **)pme;
+	char data[64];
+	int flags;
+	/* data */
+};
 
-	printf("RUN custom_plugin_tcp_entry, event: %d\n", event);
+struct custom_session_pme
+{
+	char data[64];
+	int flags;
+	/* data */
+};
 
-	struct stellar_session_event_extras *info = (struct stellar_session_event_extras *)custom_decode(payload, len, pme);
-	struct stellar_session *new_session = session_manager_session_derive(s, "CUSTOM");
+struct http_session_pme
+{
+	char data[64];
+	int flags;
+	/* data */;
+};
 
-	session_manager_trigger_event(new_session, SESSION_EVENT_OPENING, info);
-	session_manager_trigger_event(new_session, SESSION_EVENT_META, info);
+static struct tcp_session_pme *tcp_session_pme_create()
+{
+	struct tcp_session_pme *pme = (struct tcp_session_pme *)calloc(1, sizeof(struct tcp_session_pme));
+	return pme;
 }
 
-extern "C" void custom_plugin_custom_entry(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
+static void tcp_session_pme_destory(struct tcp_session_pme *pme)
 {
-	char **per_session_pme = (char **)pme;
-
-	printf("RUN custom_plugin_custom_entry, event: %d\n", event);
+	if (pme)
+	{
+		free(pme);
+		pme = NULL;
+	}
 }
 
-extern "C" int custom_plugin_init(void)
+static struct custom_session_pme *custom_session_pme_create()
 {
-	printf("RUN custom_plugin_init\n");
+	struct custom_session_pme *pme = (struct custom_session_pme *)calloc(1, sizeof(struct custom_session_pme));
+	return pme;
+}
 
+static void custom_session_pme_destory(struct custom_session_pme *pme)
+{
+	if (pme)
+	{
+		free(pme);
+		pme = NULL;
+	}
+}
+
+static struct http_session_pme *http_session_pme_create()
+{
+	struct http_session_pme *pme = (struct http_session_pme *)calloc(1, sizeof(struct http_session_pme));
+	return pme;
+}
+
+static void http_session_pme_destory(struct http_session_pme *pme)
+{
+	if (pme)
+	{
+		free(pme);
+		pme = NULL;
+	}
+}
+
+extern "C" void custom_event_plugin_error(const struct stellar_session *session, enum error_event_type event, void **pme)
+{
+	if (strcmp(stellar_session_get_name(session), "TCP") == 0)
+	{
+		struct tcp_session_pme **per_tcp_session_pme = (struct tcp_session_pme **)pme;
+		printf("RUN custom_event_plugin_error, session_name: 'TCP', error_event_type: %d, pme->data: %s\n", event, (*per_tcp_session_pme) == NULL ? "NULL" : (*per_tcp_session_pme)->data);
+		tcp_session_pme_destory(*per_tcp_session_pme);
+	}
+
+	if (strcmp(stellar_session_get_name(session), "CUSTOM") == 0)
+	{
+		struct custom_session_pme **per_custom_session_pme = (struct custom_session_pme **)pme;
+		printf("RUN custom_event_plugin_error, session_name: 'CUSTOM', error_event_type: %d, pme->data: %s\n", event, (*per_custom_session_pme) == NULL ? "NULL" : (*per_custom_session_pme)->data);
+		custom_session_pme_destory(*per_custom_session_pme);
+	}
+
+	if (strcmp(stellar_session_get_name(session), "HTTP") == 0)
+	{
+		struct http_session_pme **per_http_session_pme = (struct http_session_pme **)pme;
+		printf("RUN custom_event_plugin_error, session_name: 'HTTP', error_event_type: %d, pme->data: %s\n", event, (*per_http_session_pme) == NULL ? "NULL" : (*per_http_session_pme)->data);
+		http_session_pme_destory(*per_http_session_pme);
+	}
+}
+
+extern "C" void custom_event_plugin_tcp_entry(const struct stellar_session *session, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
+{
+	struct tcp_session_pme **per_tcp_session_pme = (struct tcp_session_pme **)pme;
+
+	if (event & SESSION_EVENT_OPENING)
+	{
+		if (*per_tcp_session_pme == NULL)
+		{
+			struct tcp_session_pme *cur_ctx = tcp_session_pme_create();
+			memcpy(cur_ctx->data, "tcp***", 6);
+			cur_ctx->flags = SESSION_EVENT_OPENING;
+			*per_tcp_session_pme = *&cur_ctx;
+		}
+	}
+
+	if (event & SESSION_EVENT_RAWPKT)
+	{
+		(*per_tcp_session_pme)->flags = SESSION_EVENT_RAWPKT;
+	}
+
+	if (event & SESSION_EVENT_ORDPKT)
+	{
+		(*per_tcp_session_pme)->flags = SESSION_EVENT_ORDPKT;
+
+		struct stellar_session_event_extras *info = (struct stellar_session_event_extras *)custom_decode(payload, len, pme);
+		struct stellar_session *new_session = session_manager_session_derive(session, "CUSTOM");
+
+		session_manager_trigger_event(new_session, SESSION_EVENT_OPENING, info);
+		session_manager_trigger_event(new_session, SESSION_EVENT_META, info);
+	}
+
+	if (event & SESSION_EVENT_META)
+	{
+		(*per_tcp_session_pme)->flags = SESSION_EVENT_META;
+	}
+
+	if (event & SESSION_EVENT_CLOSING)
+	{
+		tcp_session_pme_destory(*per_tcp_session_pme);
+		*per_tcp_session_pme = NULL;
+	}
+}
+
+extern "C" void custom_event_plugin_custom_entry(const struct stellar_session *session, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
+{
+	struct custom_session_pme **per_custom_session_pme = (struct custom_session_pme **)pme;
+
+	if (event & SESSION_EVENT_OPENING)
+	{
+		if (*per_custom_session_pme == NULL)
+		{
+			struct custom_session_pme *cur_ctx = custom_session_pme_create();
+			memcpy(cur_ctx->data, "custom_event_plugin_custom_entry", strlen("custom_event_plugin_custom_entry"));
+			cur_ctx->flags = SESSION_EVENT_OPENING;
+			*per_custom_session_pme = *&cur_ctx;
+		}
+	}
+
+	if (event & SESSION_EVENT_RAWPKT)
+	{
+		(*per_custom_session_pme)->flags = SESSION_EVENT_RAWPKT;
+	}
+	if (event & SESSION_EVENT_ORDPKT)
+	{
+		(*per_custom_session_pme)->flags = SESSION_EVENT_ORDPKT;
+	}
+
+	if (event & SESSION_EVENT_META)
+	{
+		(*per_custom_session_pme)->flags = SESSION_EVENT_META;
+	}
+
+	if (event & SESSION_EVENT_CLOSING)
+	{
+		custom_session_pme_destory(*per_custom_session_pme);
+		*per_custom_session_pme = NULL;
+	}
+}
+
+extern "C" void custom_event_plugin_http_entry(const struct stellar_session *session, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
+{
+	struct http_session_pme **per_http_session_pme = (struct http_session_pme **)pme;
+
+	if (event & SESSION_EVENT_OPENING)
+	{
+		if (*per_http_session_pme == NULL)
+		{
+			struct http_session_pme *cur_ctx = http_session_pme_create();
+			memcpy(cur_ctx->data, "custom_event_plugin_http_entry", strlen("custom_event_plugin_http_entry"));
+			cur_ctx->flags = SESSION_EVENT_OPENING;
+			*per_http_session_pme = *&cur_ctx;
+		}
+	}
+
+	if (event & SESSION_EVENT_RAWPKT)
+	{
+		(*per_http_session_pme)->flags = SESSION_EVENT_RAWPKT;
+	}
+
+	if (event & SESSION_EVENT_ORDPKT)
+	{
+		(*per_http_session_pme)->flags = SESSION_EVENT_ORDPKT;
+	}
+
+	if (event & SESSION_EVENT_META)
+	{
+		(*per_http_session_pme)->flags = SESSION_EVENT_META;
+	}
+
+	if (event & SESSION_EVENT_CLOSING)
+	{
+		http_session_pme_destory(*per_http_session_pme);
+		*per_http_session_pme = NULL;
+	}
+}
+
+extern "C" int custom_event_plugin_init(void)
+{
 	if (g_handler == NULL)
 	{
 		g_handler = (char *)malloc(1024);
@@ -46,10 +230,8 @@ extern "C" int custom_plugin_init(void)
 	return 0;
 }
 
-extern "C" void custom_plugin_exit(void)
+extern "C" void custom_event_plugin_exit(void)
 {
-	printf("RUN custom_plugin_exit\n");
-
 	if (g_handler)
 	{
 		free(g_handler);
diff --git a/src/plugin_manager/test/test_plugins/plugins_library/http_event_plugin.cpp b/src/plugin_manager/test/test_plugins/plugins_library/http_event_plugin.cpp
index e41d8b6..487d6bf 100644
--- a/src/plugin_manager/test/test_plugins/plugins_library/http_event_plugin.cpp
+++ b/src/plugin_manager/test/test_plugins/plugins_library/http_event_plugin.cpp
@@ -4,63 +4,92 @@
 
 #include <stdlib.h>
 #include <stdio.h>
+#include <string.h>
 
 static char *g_handler = NULL;
 
-struct per_session_pme_info
+struct http_session_pme
 {
-	int flag;
-	char data[16];
+	char data[64];
+	int flags;
+	/* data */;
 };
 
-extern "C" void http_event_plugin_entry(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
+static struct http_session_pme *http_session_pme_create()
 {
-	struct per_session_pme_info **per_session_pme = (struct per_session_pme_info **)pme;
+	struct http_session_pme *pme = (struct http_session_pme *)calloc(1, sizeof(struct http_session_pme));
+	return pme;
+}
 
-	printf("RUN http_event_plugin_entry, event: %d\n", event);
+static void http_session_pme_destory(struct http_session_pme *pme)
+{
+	if (pme)
+	{
+		free(pme);
+		pme = NULL;
+	}
+}
+
+extern "C" void http_event_plugin_error(const struct stellar_session *session, enum error_event_type event, void **pme)
+{
+	if (strcmp(stellar_session_get_name(session), "HTTP") == 0)
+	{
+		struct http_session_pme **per_http_session_pme = (struct http_session_pme **)pme;
+		printf("RUN http_event_plugin_error, session_name: 'HTTP', error_event_type: %d, pme->data: %s\n", event, (*per_http_session_pme) == NULL ? "NULL" : (*per_http_session_pme)->data);
+		http_session_pme_destory(*per_http_session_pme);
+	}
+}
+
+extern "C" void http_event_plugin_entry(const struct stellar_session *session, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
+{
+	struct http_session_pme **per_http_session_pme = (struct http_session_pme **)pme;
 
 	if (event & SESSION_EVENT_OPENING)
 	{
-		if (*per_session_pme == NULL)
+		if (*per_http_session_pme == NULL)
 		{
-			struct per_session_pme_info *cur_ctx = (struct per_session_pme_info *)malloc(sizeof(struct per_session_pme_info));
-			snprintf(cur_ctx->data, 6, "******");
-			*per_session_pme = *&cur_ctx;
-			printf("http_event_plugin_entry->opening_handler\n");
+			struct http_session_pme *cur_ctx = http_session_pme_create();
+			memcpy(cur_ctx->data, "http_event_plugin_entry", strlen("http_event_plugin_entry"));
+			cur_ctx->flags = SESSION_EVENT_OPENING;
+			*per_http_session_pme = *&cur_ctx;
 		}
 	}
 
 	if (event & SESSION_EVENT_RAWPKT)
 	{
-		printf("http_event_plugin_entry->rawpkt_handler\n");
+		/*
+		 * Note: pm_session_dettach_me()
+		 * The plugin manager just set the skip flag and don't call this event callback next.
+		 * Before calling pm_session_dettach_me, the current plugin must release related resources for the current session.
+		 */
+		http_session_pme_destory(*per_http_session_pme);
+		*per_http_session_pme = NULL;
+		pm_session_dettach_me(session);
+		return;
 	}
 
 	if (event & SESSION_EVENT_ORDPKT)
 	{
-		printf("http_event_plugin_entry->ordpkt_handler\n");
+		// TODO
+		(*per_http_session_pme)->flags = SESSION_EVENT_ORDPKT;
+		pm_session_dettach_others(session);
 	}
 
 	if (event & SESSION_EVENT_META)
 	{
-		printf("http_event_plugin_entry->meta_handler\n");
+		// TODO
+		(*per_http_session_pme)->flags = SESSION_EVENT_META;
 	}
 
 	if (event & SESSION_EVENT_CLOSING)
 	{
-		if (*per_session_pme)
-		{
-			printf("http_event_plugin_entry->closing_hanler\n");
-
-			free(*per_session_pme);
-			*per_session_pme = NULL;
-		}
+		http_session_pme_destory(*per_http_session_pme);
+		*per_http_session_pme = NULL;
 	}
 }
 
 extern "C" int http_event_plugin_init(void)
 {
-	printf("RUN http_event_plugin_init\n");
-
 	if (g_handler == NULL)
 	{
 		g_handler = (char *)malloc(1024);
@@ -72,8 +101,6 @@ extern "C" int http_event_plugin_init(void)
 
 extern "C" void http_event_plugin_exit(void)
 {
-	printf("RUN http_event_plugin_exit\n");
-
 	if (g_handler)
 	{
 		free(g_handler);
diff --git a/src/protocol_decoder/http/http.cpp b/src/protocol_decoder/http/http.cpp
index b3a9205..b24fffd 100644
--- a/src/protocol_decoder/http/http.cpp
+++ b/src/protocol_decoder/http/http.cpp
@@ -7,4 +7,8 @@ void http_decoder(const struct stellar_session *s, enum session_event_type event
 
 	session_manager_trigger_event(new_session, SESSION_EVENT_OPENING, info);
 	session_manager_trigger_event(new_session, SESSION_EVENT_META, info);
+}
+
+void http_error_cb(const struct stellar_session *s, enum error_event_type event, void **pme)
+{
 }
\ No newline at end of file
diff --git a/src/session_manager/session_manager.cpp b/src/session_manager/session_manager.cpp
index 7ea5643..91e2405 100644
--- a/src/session_manager/session_manager.cpp
+++ b/src/session_manager/session_manager.cpp
@@ -35,7 +35,7 @@ struct stellar_event *session_manager_fetch_event(struct session_manager *h)
 }
 
 /******************************************************************************
- * API: between stellar_event and plugin_manager
+ * stellar_event API For Plugin Manager
  ******************************************************************************/
 
 struct session_plugin_ctx *stellar_event_get_plugin_ctx(struct stellar_event *event)
@@ -80,3 +80,22 @@ uint16_t stellar_event_get_payload_length(struct stellar_event *event)
 {
 	return 0;
 }
+
+/******************************************************************************
+ * stellar_session API For Plugin Manager
+ ******************************************************************************/
+
+struct session_plugin_ctx *stellar_session_get_plugin_ctx(const struct stellar_session *session)
+{
+	struct stellar_session_event_data *evdata = session->event_data;
+	return evdata->plugin_ctx;
+}
+
+/******************************************************************************
+ * stellar_session API For Plugin
+ ******************************************************************************/
+
+const char *stellar_session_get_name(const struct stellar_session *session)
+{
+	return session->name;
+}
\ No newline at end of file
diff --git a/src/session_manager/session_manager.h b/src/session_manager/session_manager.h
index 1bef25f..ec8ac60 100644
--- a/src/session_manager/session_manager.h
+++ b/src/session_manager/session_manager.h
@@ -22,10 +22,11 @@ struct stellar_session
     const char *name;
     void *addr;
     void *data;
+    struct stellar_session_event_data *event_data;
 };
 
 /******************************************************************************
- * API: between stellar_event and plugin_manager
+ * stellar_event API For Plugin Manager
  ******************************************************************************/
 
 struct session_plugin_ctx *stellar_event_get_plugin_ctx(struct stellar_event *event);
@@ -37,4 +38,10 @@ const struct stellar_session *stellar_event_get_session(struct stellar_event *ev
 struct stellar_packet *stellar_event_get_packet(struct stellar_event *event);
 
 const char *stellar_event_get_payload(struct stellar_event *event);
-uint16_t stellar_event_get_payload_length(struct stellar_event *event);
\ No newline at end of file
+uint16_t stellar_event_get_payload_length(struct stellar_event *event);
+
+/******************************************************************************
+ * stellar_session API For Plugin Manager
+ ******************************************************************************/
+
+struct session_plugin_ctx *stellar_session_get_plugin_ctx(const struct stellar_session *session);
\ No newline at end of file

From e9e4e6b4bf9db0754068a028190a4fc23f4eb7fb Mon Sep 17 00:00:00 2001
From: luwenpeng <luwenpeng@geedgenetworks.com>
Date: Thu, 4 Aug 2022 18:00:25 +0800
Subject: [PATCH 11/17] Add sds open source code to deps directory

---
 CMakeLists.txt          |    1 +
 deps/sds/CMakeLists.txt |    3 +
 deps/sds/sds.c          | 1300 +++++++++++++++++++++++++++++++++++++++
 deps/sds/sds.h          |  274 +++++++++
 deps/sds/sdsalloc.h     |   42 ++
 5 files changed, 1620 insertions(+)
 create mode 100644 deps/sds/CMakeLists.txt
 create mode 100644 deps/sds/sds.c
 create mode 100644 deps/sds/sds.h
 create mode 100644 deps/sds/sdsalloc.h

diff --git a/CMakeLists.txt b/CMakeLists.txt
index fdb093f..d5a530f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,6 +18,7 @@ include_directories(${CMAKE_SOURCE_DIR}/sdk/include)
 #add vendor and source directory
 add_subdirectory(vendor)
 add_subdirectory(deps/toml)
+add_subdirectory(deps/sds)
 add_subdirectory(src)
 add_subdirectory(sdk/example)
 
diff --git a/deps/sds/CMakeLists.txt b/deps/sds/CMakeLists.txt
new file mode 100644
index 0000000..ecc0931
--- /dev/null
+++ b/deps/sds/CMakeLists.txt
@@ -0,0 +1,3 @@
+set(CMAKE_C_FLAGS "-std=c99")
+add_definitions(-fPIC)
+add_library(sds STATIC sds.c)
\ No newline at end of file
diff --git a/deps/sds/sds.c b/deps/sds/sds.c
new file mode 100644
index 0000000..1189716
--- /dev/null
+++ b/deps/sds/sds.c
@@ -0,0 +1,1300 @@
+/* SDSLib 2.0 -- A C dynamic strings library
+ *
+ * Copyright (c) 2006-2015, Salvatore Sanfilippo <antirez at gmail dot com>
+ * Copyright (c) 2015, Oran Agra
+ * Copyright (c) 2015, Redis Labs, Inc
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   * Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *   * Neither the name of Redis nor the names of its contributors may be used
+ *     to endorse or promote products derived from this software without
+ *     specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <assert.h>
+#include <limits.h>
+#include "sds.h"
+#include "sdsalloc.h"
+
+const char *SDS_NOINIT = "SDS_NOINIT";
+
+static inline int sdsHdrSize(char type) {
+    switch(type&SDS_TYPE_MASK) {
+        case SDS_TYPE_5:
+            return sizeof(struct sdshdr5);
+        case SDS_TYPE_8:
+            return sizeof(struct sdshdr8);
+        case SDS_TYPE_16:
+            return sizeof(struct sdshdr16);
+        case SDS_TYPE_32:
+            return sizeof(struct sdshdr32);
+        case SDS_TYPE_64:
+            return sizeof(struct sdshdr64);
+    }
+    return 0;
+}
+
+static inline char sdsReqType(size_t string_size) {
+    if (string_size < 1<<5)
+        return SDS_TYPE_5;
+    if (string_size < 1<<8)
+        return SDS_TYPE_8;
+    if (string_size < 1<<16)
+        return SDS_TYPE_16;
+#if (LONG_MAX == LLONG_MAX)
+    if (string_size < 1ll<<32)
+        return SDS_TYPE_32;
+    return SDS_TYPE_64;
+#else
+    return SDS_TYPE_32;
+#endif
+}
+
+/* Create a new sds string with the content specified by the 'init' pointer
+ * and 'initlen'.
+ * If NULL is used for 'init' the string is initialized with zero bytes.
+ * If SDS_NOINIT is used, the buffer is left uninitialized;
+ *
+ * The string is always null-termined (all the sds strings are, always) so
+ * even if you create an sds string with:
+ *
+ * mystring = sdsnewlen("abc",3);
+ *
+ * You can print the string with printf() as there is an implicit \0 at the
+ * end of the string. However the string is binary safe and can contain
+ * \0 characters in the middle, as the length is stored in the sds header. */
+sds sdsnewlen(const void *init, size_t initlen) {
+    void *sh;
+    sds s;
+    char type = sdsReqType(initlen);
+    /* Empty strings are usually created in order to append. Use type 8
+     * since type 5 is not good at this. */
+    if (type == SDS_TYPE_5 && initlen == 0) type = SDS_TYPE_8;
+    int hdrlen = sdsHdrSize(type);
+    unsigned char *fp; /* flags pointer. */
+
+    sh = s_malloc(hdrlen+initlen+1);
+    if (sh == NULL) return NULL;
+    if (init==SDS_NOINIT)
+        init = NULL;
+    else if (!init)
+        memset(sh, 0, hdrlen+initlen+1);
+    s = (char*)sh+hdrlen;
+    fp = ((unsigned char*)s)-1;
+    switch(type) {
+        case SDS_TYPE_5: {
+            *fp = type | (initlen << SDS_TYPE_BITS);
+            break;
+        }
+        case SDS_TYPE_8: {
+            SDS_HDR_VAR(8,s);
+            sh->len = initlen;
+            sh->alloc = initlen;
+            *fp = type;
+            break;
+        }
+        case SDS_TYPE_16: {
+            SDS_HDR_VAR(16,s);
+            sh->len = initlen;
+            sh->alloc = initlen;
+            *fp = type;
+            break;
+        }
+        case SDS_TYPE_32: {
+            SDS_HDR_VAR(32,s);
+            sh->len = initlen;
+            sh->alloc = initlen;
+            *fp = type;
+            break;
+        }
+        case SDS_TYPE_64: {
+            SDS_HDR_VAR(64,s);
+            sh->len = initlen;
+            sh->alloc = initlen;
+            *fp = type;
+            break;
+        }
+    }
+    if (initlen && init)
+        memcpy(s, init, initlen);
+    s[initlen] = '\0';
+    return s;
+}
+
+/* Create an empty (zero length) sds string. Even in this case the string
+ * always has an implicit null term. */
+sds sdsempty(void) {
+    return sdsnewlen("",0);
+}
+
+/* Create a new sds string starting from a null terminated C string. */
+sds sdsnew(const char *init) {
+    size_t initlen = (init == NULL) ? 0 : strlen(init);
+    return sdsnewlen(init, initlen);
+}
+
+/* Duplicate an sds string. */
+sds sdsdup(const sds s) {
+    return sdsnewlen(s, sdslen(s));
+}
+
+/* Free an sds string. No operation is performed if 's' is NULL. */
+void sdsfree(sds s) {
+    if (s == NULL) return;
+    s_free((char*)s-sdsHdrSize(s[-1]));
+}
+
+/* Set the sds string length to the length as obtained with strlen(), so
+ * considering as content only up to the first null term character.
+ *
+ * This function is useful when the sds string is hacked manually in some
+ * way, like in the following example:
+ *
+ * s = sdsnew("foobar");
+ * s[2] = '\0';
+ * sdsupdatelen(s);
+ * printf("%d\n", sdslen(s));
+ *
+ * The output will be "2", but if we comment out the call to sdsupdatelen()
+ * the output will be "6" as the string was modified but the logical length
+ * remains 6 bytes. */
+void sdsupdatelen(sds s) {
+    size_t reallen = strlen(s);
+    sdssetlen(s, reallen);
+}
+
+/* Modify an sds string in-place to make it empty (zero length).
+ * However all the existing buffer is not discarded but set as free space
+ * so that next append operations will not require allocations up to the
+ * number of bytes previously available. */
+void sdsclear(sds s) {
+    sdssetlen(s, 0);
+    s[0] = '\0';
+}
+
+/* Enlarge the free space at the end of the sds string so that the caller
+ * is sure that after calling this function can overwrite up to addlen
+ * bytes after the end of the string, plus one more byte for nul term.
+ *
+ * Note: this does not change the *length* of the sds string as returned
+ * by sdslen(), but only the free buffer space we have. */
+sds sdsMakeRoomFor(sds s, size_t addlen) {
+    void *sh, *newsh;
+    size_t avail = sdsavail(s);
+    size_t len, newlen;
+    char type, oldtype = s[-1] & SDS_TYPE_MASK;
+    int hdrlen;
+
+    /* Return ASAP if there is enough space left. */
+    if (avail >= addlen) return s;
+
+    len = sdslen(s);
+    sh = (char*)s-sdsHdrSize(oldtype);
+    newlen = (len+addlen);
+    if (newlen < SDS_MAX_PREALLOC)
+        newlen *= 2;
+    else
+        newlen += SDS_MAX_PREALLOC;
+
+    type = sdsReqType(newlen);
+
+    /* Don't use type 5: the user is appending to the string and type 5 is
+     * not able to remember empty space, so sdsMakeRoomFor() must be called
+     * at every appending operation. */
+    if (type == SDS_TYPE_5) type = SDS_TYPE_8;
+
+    hdrlen = sdsHdrSize(type);
+    if (oldtype==type) {
+        newsh = s_realloc(sh, hdrlen+newlen+1);
+        if (newsh == NULL) return NULL;
+        s = (char*)newsh+hdrlen;
+    } else {
+        /* Since the header size changes, need to move the string forward,
+         * and can't use realloc */
+        newsh = s_malloc(hdrlen+newlen+1);
+        if (newsh == NULL) return NULL;
+        memcpy((char*)newsh+hdrlen, s, len+1);
+        s_free(sh);
+        s = (char*)newsh+hdrlen;
+        s[-1] = type;
+        sdssetlen(s, len);
+    }
+    sdssetalloc(s, newlen);
+    return s;
+}
+
+/* Reallocate the sds string so that it has no free space at the end. The
+ * contained string remains not altered, but next concatenation operations
+ * will require a reallocation.
+ *
+ * After the call, the passed sds string is no longer valid and all the
+ * references must be substituted with the new pointer returned by the call. */
+sds sdsRemoveFreeSpace(sds s) {
+    void *sh, *newsh;
+    char type, oldtype = s[-1] & SDS_TYPE_MASK;
+    int hdrlen, oldhdrlen = sdsHdrSize(oldtype);
+    size_t len = sdslen(s);
+    size_t avail = sdsavail(s);
+    sh = (char*)s-oldhdrlen;
+
+    /* Return ASAP if there is no space left. */
+    if (avail == 0) return s;
+
+    /* Check what would be the minimum SDS header that is just good enough to
+     * fit this string. */
+    type = sdsReqType(len);
+    hdrlen = sdsHdrSize(type);
+
+    /* If the type is the same, or at least a large enough type is still
+     * required, we just realloc(), letting the allocator to do the copy
+     * only if really needed. Otherwise if the change is huge, we manually
+     * reallocate the string to use the different header type. */
+    if (oldtype==type || type > SDS_TYPE_8) {
+        newsh = s_realloc(sh, oldhdrlen+len+1);
+        if (newsh == NULL) return NULL;
+        s = (char*)newsh+oldhdrlen;
+    } else {
+        newsh = s_malloc(hdrlen+len+1);
+        if (newsh == NULL) return NULL;
+        memcpy((char*)newsh+hdrlen, s, len+1);
+        s_free(sh);
+        s = (char*)newsh+hdrlen;
+        s[-1] = type;
+        sdssetlen(s, len);
+    }
+    sdssetalloc(s, len);
+    return s;
+}
+
+/* Return the total size of the allocation of the specified sds string,
+ * including:
+ * 1) The sds header before the pointer.
+ * 2) The string.
+ * 3) The free buffer at the end if any.
+ * 4) The implicit null term.
+ */
+size_t sdsAllocSize(sds s) {
+    size_t alloc = sdsalloc(s);
+    return sdsHdrSize(s[-1])+alloc+1;
+}
+
+/* Return the pointer of the actual SDS allocation (normally SDS strings
+ * are referenced by the start of the string buffer). */
+void *sdsAllocPtr(sds s) {
+    return (void*) (s-sdsHdrSize(s[-1]));
+}
+
+/* Increment the sds length and decrements the left free space at the
+ * end of the string according to 'incr'. Also set the null term
+ * in the new end of the string.
+ *
+ * This function is used in order to fix the string length after the
+ * user calls sdsMakeRoomFor(), writes something after the end of
+ * the current string, and finally needs to set the new length.
+ *
+ * Note: it is possible to use a negative increment in order to
+ * right-trim the string.
+ *
+ * Usage example:
+ *
+ * Using sdsIncrLen() and sdsMakeRoomFor() it is possible to mount the
+ * following schema, to cat bytes coming from the kernel to the end of an
+ * sds string without copying into an intermediate buffer:
+ *
+ * oldlen = sdslen(s);
+ * s = sdsMakeRoomFor(s, BUFFER_SIZE);
+ * nread = read(fd, s+oldlen, BUFFER_SIZE);
+ * ... check for nread <= 0 and handle it ...
+ * sdsIncrLen(s, nread);
+ */
+void sdsIncrLen(sds s, ssize_t incr) {
+    unsigned char flags = s[-1];
+    size_t len;
+    switch(flags&SDS_TYPE_MASK) {
+        case SDS_TYPE_5: {
+            unsigned char *fp = ((unsigned char*)s)-1;
+            unsigned char oldlen = SDS_TYPE_5_LEN(flags);
+            assert((incr > 0 && oldlen+incr < 32) || (incr < 0 && oldlen >= (unsigned int)(-incr)));
+            *fp = SDS_TYPE_5 | ((oldlen+incr) << SDS_TYPE_BITS);
+            len = oldlen+incr;
+            break;
+        }
+        case SDS_TYPE_8: {
+            SDS_HDR_VAR(8,s);
+            assert((incr >= 0 && sh->alloc-sh->len >= incr) || (incr < 0 && sh->len >= (unsigned int)(-incr)));
+            len = (sh->len += incr);
+            break;
+        }
+        case SDS_TYPE_16: {
+            SDS_HDR_VAR(16,s);
+            assert((incr >= 0 && sh->alloc-sh->len >= incr) || (incr < 0 && sh->len >= (unsigned int)(-incr)));
+            len = (sh->len += incr);
+            break;
+        }
+        case SDS_TYPE_32: {
+            SDS_HDR_VAR(32,s);
+            assert((incr >= 0 && sh->alloc-sh->len >= (unsigned int)incr) || (incr < 0 && sh->len >= (unsigned int)(-incr)));
+            len = (sh->len += incr);
+            break;
+        }
+        case SDS_TYPE_64: {
+            SDS_HDR_VAR(64,s);
+            assert((incr >= 0 && sh->alloc-sh->len >= (uint64_t)incr) || (incr < 0 && sh->len >= (uint64_t)(-incr)));
+            len = (sh->len += incr);
+            break;
+        }
+        default: len = 0; /* Just to avoid compilation warnings. */
+    }
+    s[len] = '\0';
+}
+
+/* Grow the sds to have the specified length. Bytes that were not part of
+ * the original length of the sds will be set to zero.
+ *
+ * if the specified length is smaller than the current length, no operation
+ * is performed. */
+sds sdsgrowzero(sds s, size_t len) {
+    size_t curlen = sdslen(s);
+
+    if (len <= curlen) return s;
+    s = sdsMakeRoomFor(s,len-curlen);
+    if (s == NULL) return NULL;
+
+    /* Make sure added region doesn't contain garbage */
+    memset(s+curlen,0,(len-curlen+1)); /* also set trailing \0 byte */
+    sdssetlen(s, len);
+    return s;
+}
+
+/* Append the specified binary-safe string pointed by 't' of 'len' bytes to the
+ * end of the specified sds string 's'.
+ *
+ * After the call, the passed sds string is no longer valid and all the
+ * references must be substituted with the new pointer returned by the call. */
+sds sdscatlen(sds s, const void *t, size_t len) {
+    size_t curlen = sdslen(s);
+
+    s = sdsMakeRoomFor(s,len);
+    if (s == NULL) return NULL;
+    memcpy(s+curlen, t, len);
+    sdssetlen(s, curlen+len);
+    s[curlen+len] = '\0';
+    return s;
+}
+
+/* Append the specified null termianted C string to the sds string 's'.
+ *
+ * After the call, the passed sds string is no longer valid and all the
+ * references must be substituted with the new pointer returned by the call. */
+sds sdscat(sds s, const char *t) {
+    return sdscatlen(s, t, strlen(t));
+}
+
+/* Append the specified sds 't' to the existing sds 's'.
+ *
+ * After the call, the modified sds string is no longer valid and all the
+ * references must be substituted with the new pointer returned by the call. */
+sds sdscatsds(sds s, const sds t) {
+    return sdscatlen(s, t, sdslen(t));
+}
+
+/* Destructively modify the sds string 's' to hold the specified binary
+ * safe string pointed by 't' of length 'len' bytes. */
+sds sdscpylen(sds s, const char *t, size_t len) {
+    if (sdsalloc(s) < len) {
+        s = sdsMakeRoomFor(s,len-sdslen(s));
+        if (s == NULL) return NULL;
+    }
+    memcpy(s, t, len);
+    s[len] = '\0';
+    sdssetlen(s, len);
+    return s;
+}
+
+/* Like sdscpylen() but 't' must be a null-termined string so that the length
+ * of the string is obtained with strlen(). */
+sds sdscpy(sds s, const char *t) {
+    return sdscpylen(s, t, strlen(t));
+}
+
+/* Helper for sdscatlonglong() doing the actual number -> string
+ * conversion. 's' must point to a string with room for at least
+ * SDS_LLSTR_SIZE bytes.
+ *
+ * The function returns the length of the null-terminated string
+ * representation stored at 's'. */
+#define SDS_LLSTR_SIZE 21
+int sdsll2str(char *s, long long value) {
+    char *p, aux;
+    unsigned long long v;
+    size_t l;
+
+    /* Generate the string representation, this method produces
+     * an reversed string. */
+    v = (value < 0) ? -value : value;
+    p = s;
+    do {
+        *p++ = '0'+(v%10);
+        v /= 10;
+    } while(v);
+    if (value < 0) *p++ = '-';
+
+    /* Compute length and add null term. */
+    l = p-s;
+    *p = '\0';
+
+    /* Reverse the string. */
+    p--;
+    while(s < p) {
+        aux = *s;
+        *s = *p;
+        *p = aux;
+        s++;
+        p--;
+    }
+    return l;
+}
+
+/* Identical sdsll2str(), but for unsigned long long type. */
+int sdsull2str(char *s, unsigned long long v) {
+    char *p, aux;
+    size_t l;
+
+    /* Generate the string representation, this method produces
+     * an reversed string. */
+    p = s;
+    do {
+        *p++ = '0'+(v%10);
+        v /= 10;
+    } while(v);
+
+    /* Compute length and add null term. */
+    l = p-s;
+    *p = '\0';
+
+    /* Reverse the string. */
+    p--;
+    while(s < p) {
+        aux = *s;
+        *s = *p;
+        *p = aux;
+        s++;
+        p--;
+    }
+    return l;
+}
+
+/* Create an sds string from a long long value. It is much faster than:
+ *
+ * sdscatprintf(sdsempty(),"%lld\n", value);
+ */
+sds sdsfromlonglong(long long value) {
+    char buf[SDS_LLSTR_SIZE];
+    int len = sdsll2str(buf,value);
+
+    return sdsnewlen(buf,len);
+}
+
+/* Like sdscatprintf() but gets va_list instead of being variadic. */
+sds sdscatvprintf(sds s, const char *fmt, va_list ap) {
+    va_list cpy;
+    char staticbuf[1024], *buf = staticbuf, *t;
+    size_t buflen = strlen(fmt)*2;
+
+    /* We try to start using a static buffer for speed.
+     * If not possible we revert to heap allocation. */
+    if (buflen > sizeof(staticbuf)) {
+        buf = s_malloc(buflen);
+        if (buf == NULL) return NULL;
+    } else {
+        buflen = sizeof(staticbuf);
+    }
+
+    /* Try with buffers two times bigger every time we fail to
+     * fit the string in the current buffer size. */
+    while(1) {
+        buf[buflen-2] = '\0';
+        va_copy(cpy,ap);
+        vsnprintf(buf, buflen, fmt, cpy);
+        va_end(cpy);
+        if (buf[buflen-2] != '\0') {
+            if (buf != staticbuf) s_free(buf);
+            buflen *= 2;
+            buf = s_malloc(buflen);
+            if (buf == NULL) return NULL;
+            continue;
+        }
+        break;
+    }
+
+    /* Finally concat the obtained string to the SDS string and return it. */
+    t = sdscat(s, buf);
+    if (buf != staticbuf) s_free(buf);
+    return t;
+}
+
+/* Append to the sds string 's' a string obtained using printf-alike format
+ * specifier.
+ *
+ * After the call, the modified sds string is no longer valid and all the
+ * references must be substituted with the new pointer returned by the call.
+ *
+ * Example:
+ *
+ * s = sdsnew("Sum is: ");
+ * s = sdscatprintf(s,"%d+%d = %d",a,b,a+b).
+ *
+ * Often you need to create a string from scratch with the printf-alike
+ * format. When this is the need, just use sdsempty() as the target string:
+ *
+ * s = sdscatprintf(sdsempty(), "... your format ...", args);
+ */
+sds sdscatprintf(sds s, const char *fmt, ...) {
+    va_list ap;
+    char *t;
+    va_start(ap, fmt);
+    t = sdscatvprintf(s,fmt,ap);
+    va_end(ap);
+    return t;
+}
+
+/* This function is similar to sdscatprintf, but much faster as it does
+ * not rely on sprintf() family functions implemented by the libc that
+ * are often very slow. Moreover directly handling the sds string as
+ * new data is concatenated provides a performance improvement.
+ *
+ * However this function only handles an incompatible subset of printf-alike
+ * format specifiers:
+ *
+ * %s - C String
+ * %S - SDS string
+ * %i - signed int
+ * %I - 64 bit signed integer (long long, int64_t)
+ * %u - unsigned int
+ * %U - 64 bit unsigned integer (unsigned long long, uint64_t)
+ * %% - Verbatim "%" character.
+ */
+sds sdscatfmt(sds s, char const *fmt, ...) {
+    size_t initlen = sdslen(s);
+    const char *f = fmt;
+    long i;
+    va_list ap;
+
+    /* To avoid continuous reallocations, let's start with a buffer that
+     * can hold at least two times the format string itself. It's not the
+     * best heuristic but seems to work in practice. */
+    s = sdsMakeRoomFor(s, initlen + strlen(fmt)*2);
+    va_start(ap,fmt);
+    f = fmt;    /* Next format specifier byte to process. */
+    i = initlen; /* Position of the next byte to write to dest str. */
+    while(*f) {
+        char next, *str;
+        size_t l;
+        long long num;
+        unsigned long long unum;
+
+        /* Make sure there is always space for at least 1 char. */
+        if (sdsavail(s)==0) {
+            s = sdsMakeRoomFor(s,1);
+        }
+
+        switch(*f) {
+        case '%':
+            next = *(f+1);
+            f++;
+            switch(next) {
+            case 's':
+            case 'S':
+                str = va_arg(ap,char*);
+                l = (next == 's') ? strlen(str) : sdslen(str);
+                if (sdsavail(s) < l) {
+                    s = sdsMakeRoomFor(s,l);
+                }
+                memcpy(s+i,str,l);
+                sdsinclen(s,l);
+                i += l;
+                break;
+            case 'i':
+            case 'I':
+                if (next == 'i')
+                    num = va_arg(ap,int);
+                else
+                    num = va_arg(ap,long long);
+                {
+                    char buf[SDS_LLSTR_SIZE];
+                    l = sdsll2str(buf,num);
+                    if (sdsavail(s) < l) {
+                        s = sdsMakeRoomFor(s,l);
+                    }
+                    memcpy(s+i,buf,l);
+                    sdsinclen(s,l);
+                    i += l;
+                }
+                break;
+            case 'u':
+            case 'U':
+                if (next == 'u')
+                    unum = va_arg(ap,unsigned int);
+                else
+                    unum = va_arg(ap,unsigned long long);
+                {
+                    char buf[SDS_LLSTR_SIZE];
+                    l = sdsull2str(buf,unum);
+                    if (sdsavail(s) < l) {
+                        s = sdsMakeRoomFor(s,l);
+                    }
+                    memcpy(s+i,buf,l);
+                    sdsinclen(s,l);
+                    i += l;
+                }
+                break;
+            default: /* Handle %% and generally %<unknown>. */
+                s[i++] = next;
+                sdsinclen(s,1);
+                break;
+            }
+            break;
+        default:
+            s[i++] = *f;
+            sdsinclen(s,1);
+            break;
+        }
+        f++;
+    }
+    va_end(ap);
+
+    /* Add null-term */
+    s[i] = '\0';
+    return s;
+}
+
+/* Remove the part of the string from left and from right composed just of
+ * contiguous characters found in 'cset', that is a null terminted C string.
+ *
+ * After the call, the modified sds string is no longer valid and all the
+ * references must be substituted with the new pointer returned by the call.
+ *
+ * Example:
+ *
+ * s = sdsnew("AA...AA.a.aa.aHelloWorld     :::");
+ * s = sdstrim(s,"Aa. :");
+ * printf("%s\n", s);
+ *
+ * Output will be just "HelloWorld".
+ */
+sds sdstrim(sds s, const char *cset) {
+    char *start, *end, *sp, *ep;
+    size_t len;
+
+    sp = start = s;
+    ep = end = s+sdslen(s)-1;
+    while(sp <= end && strchr(cset, *sp)) sp++;
+    while(ep > sp && strchr(cset, *ep)) ep--;
+    len = (sp > ep) ? 0 : ((ep-sp)+1);
+    if (s != sp) memmove(s, sp, len);
+    s[len] = '\0';
+    sdssetlen(s,len);
+    return s;
+}
+
+/* Turn the string into a smaller (or equal) string containing only the
+ * substring specified by the 'start' and 'end' indexes.
+ *
+ * start and end can be negative, where -1 means the last character of the
+ * string, -2 the penultimate character, and so forth.
+ *
+ * The interval is inclusive, so the start and end characters will be part
+ * of the resulting string.
+ *
+ * The string is modified in-place.
+ *
+ * Example:
+ *
+ * s = sdsnew("Hello World");
+ * sdsrange(s,1,-1); => "ello World"
+ */
+void sdsrange(sds s, ssize_t start, ssize_t end) {
+    size_t newlen, len = sdslen(s);
+
+    if (len == 0) return;
+    if (start < 0) {
+        start = len+start;
+        if (start < 0) start = 0;
+    }
+    if (end < 0) {
+        end = len+end;
+        if (end < 0) end = 0;
+    }
+    newlen = (start > end) ? 0 : (end-start)+1;
+    if (newlen != 0) {
+        if (start >= (ssize_t)len) {
+            newlen = 0;
+        } else if (end >= (ssize_t)len) {
+            end = len-1;
+            newlen = (start > end) ? 0 : (end-start)+1;
+        }
+    } else {
+        start = 0;
+    }
+    if (start && newlen) memmove(s, s+start, newlen);
+    s[newlen] = 0;
+    sdssetlen(s,newlen);
+}
+
+/* Apply tolower() to every character of the sds string 's'. */
+void sdstolower(sds s) {
+    size_t len = sdslen(s), j;
+
+    for (j = 0; j < len; j++) s[j] = tolower(s[j]);
+}
+
+/* Apply toupper() to every character of the sds string 's'. */
+void sdstoupper(sds s) {
+    size_t len = sdslen(s), j;
+
+    for (j = 0; j < len; j++) s[j] = toupper(s[j]);
+}
+
+/* Compare two sds strings s1 and s2 with memcmp().
+ *
+ * Return value:
+ *
+ *     positive if s1 > s2.
+ *     negative if s1 < s2.
+ *     0 if s1 and s2 are exactly the same binary string.
+ *
+ * If two strings share exactly the same prefix, but one of the two has
+ * additional characters, the longer string is considered to be greater than
+ * the smaller one. */
+int sdscmp(const sds s1, const sds s2) {
+    size_t l1, l2, minlen;
+    int cmp;
+
+    l1 = sdslen(s1);
+    l2 = sdslen(s2);
+    minlen = (l1 < l2) ? l1 : l2;
+    cmp = memcmp(s1,s2,minlen);
+    if (cmp == 0) return l1>l2? 1: (l1<l2? -1: 0);
+    return cmp;
+}
+
+/* Split 's' with separator in 'sep'. An array
+ * of sds strings is returned. *count will be set
+ * by reference to the number of tokens returned.
+ *
+ * On out of memory, zero length string, zero length
+ * separator, NULL is returned.
+ *
+ * Note that 'sep' is able to split a string using
+ * a multi-character separator. For example
+ * sdssplit("foo_-_bar","_-_"); will return two
+ * elements "foo" and "bar".
+ *
+ * This version of the function is binary-safe but
+ * requires length arguments. sdssplit() is just the
+ * same function but for zero-terminated strings.
+ */
+sds *sdssplitlen(const char *s, ssize_t len, const char *sep, int seplen, int *count) {
+    int elements = 0, slots = 5;
+    long start = 0, j;
+    sds *tokens;
+
+    if (seplen < 1 || len < 0) return NULL;
+
+    tokens = s_malloc(sizeof(sds)*slots);
+    if (tokens == NULL) return NULL;
+
+    if (len == 0) {
+        *count = 0;
+        return tokens;
+    }
+    for (j = 0; j < (len-(seplen-1)); j++) {
+        /* make sure there is room for the next element and the final one */
+        if (slots < elements+2) {
+            sds *newtokens;
+
+            slots *= 2;
+            newtokens = s_realloc(tokens,sizeof(sds)*slots);
+            if (newtokens == NULL) goto cleanup;
+            tokens = newtokens;
+        }
+        /* search the separator */
+        if ((seplen == 1 && *(s+j) == sep[0]) || (memcmp(s+j,sep,seplen) == 0)) {
+            tokens[elements] = sdsnewlen(s+start,j-start);
+            if (tokens[elements] == NULL) goto cleanup;
+            elements++;
+            start = j+seplen;
+            j = j+seplen-1; /* skip the separator */
+        }
+    }
+    /* Add the final element. We are sure there is room in the tokens array. */
+    tokens[elements] = sdsnewlen(s+start,len-start);
+    if (tokens[elements] == NULL) goto cleanup;
+    elements++;
+    *count = elements;
+    return tokens;
+
+cleanup:
+    {
+        int i;
+        for (i = 0; i < elements; i++) sdsfree(tokens[i]);
+        s_free(tokens);
+        *count = 0;
+        return NULL;
+    }
+}
+
+/* Free the result returned by sdssplitlen(), or do nothing if 'tokens' is NULL. */
+void sdsfreesplitres(sds *tokens, int count) {
+    if (!tokens) return;
+    while(count--)
+        sdsfree(tokens[count]);
+    s_free(tokens);
+}
+
+/* Append to the sds string "s" an escaped string representation where
+ * all the non-printable characters (tested with isprint()) are turned into
+ * escapes in the form "\n\r\a...." or "\x<hex-number>".
+ *
+ * After the call, the modified sds string is no longer valid and all the
+ * references must be substituted with the new pointer returned by the call. */
+sds sdscatrepr(sds s, const char *p, size_t len) {
+    s = sdscatlen(s,"\"",1);
+    while(len--) {
+        switch(*p) {
+        case '\\':
+        case '"':
+            s = sdscatprintf(s,"\\%c",*p);
+            break;
+        case '\n': s = sdscatlen(s,"\\n",2); break;
+        case '\r': s = sdscatlen(s,"\\r",2); break;
+        case '\t': s = sdscatlen(s,"\\t",2); break;
+        case '\a': s = sdscatlen(s,"\\a",2); break;
+        case '\b': s = sdscatlen(s,"\\b",2); break;
+        default:
+            if (isprint(*p))
+                s = sdscatprintf(s,"%c",*p);
+            else
+                s = sdscatprintf(s,"\\x%02x",(unsigned char)*p);
+            break;
+        }
+        p++;
+    }
+    return sdscatlen(s,"\"",1);
+}
+
+/* Helper function for sdssplitargs() that returns non zero if 'c'
+ * is a valid hex digit. */
+int is_hex_digit(char c) {
+    return (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') ||
+           (c >= 'A' && c <= 'F');
+}
+
+/* Helper function for sdssplitargs() that converts a hex digit into an
+ * integer from 0 to 15 */
+int hex_digit_to_int(char c) {
+    switch(c) {
+    case '0': return 0;
+    case '1': return 1;
+    case '2': return 2;
+    case '3': return 3;
+    case '4': return 4;
+    case '5': return 5;
+    case '6': return 6;
+    case '7': return 7;
+    case '8': return 8;
+    case '9': return 9;
+    case 'a': case 'A': return 10;
+    case 'b': case 'B': return 11;
+    case 'c': case 'C': return 12;
+    case 'd': case 'D': return 13;
+    case 'e': case 'E': return 14;
+    case 'f': case 'F': return 15;
+    default: return 0;
+    }
+}
+
+/* Split a line into arguments, where every argument can be in the
+ * following programming-language REPL-alike form:
+ *
+ * foo bar "newline are supported\n" and "\xff\x00otherstuff"
+ *
+ * The number of arguments is stored into *argc, and an array
+ * of sds is returned.
+ *
+ * The caller should free the resulting array of sds strings with
+ * sdsfreesplitres().
+ *
+ * Note that sdscatrepr() is able to convert back a string into
+ * a quoted string in the same format sdssplitargs() is able to parse.
+ *
+ * The function returns the allocated tokens on success, even when the
+ * input string is empty, or NULL if the input contains unbalanced
+ * quotes or closed quotes followed by non space characters
+ * as in: "foo"bar or "foo'
+ */
+sds *sdssplitargs(const char *line, int *argc) {
+    const char *p = line;
+    char *current = NULL;
+    char **vector = NULL;
+
+    *argc = 0;
+    while(1) {
+        /* skip blanks */
+        while(*p && isspace(*p)) p++;
+        if (*p) {
+            /* get a token */
+            int inq=0;  /* set to 1 if we are in "quotes" */
+            int insq=0; /* set to 1 if we are in 'single quotes' */
+            int done=0;
+
+            if (current == NULL) current = sdsempty();
+            while(!done) {
+                if (inq) {
+                    if (*p == '\\' && *(p+1) == 'x' &&
+                                             is_hex_digit(*(p+2)) &&
+                                             is_hex_digit(*(p+3)))
+                    {
+                        unsigned char byte;
+
+                        byte = (hex_digit_to_int(*(p+2))*16)+
+                                hex_digit_to_int(*(p+3));
+                        current = sdscatlen(current,(char*)&byte,1);
+                        p += 3;
+                    } else if (*p == '\\' && *(p+1)) {
+                        char c;
+
+                        p++;
+                        switch(*p) {
+                        case 'n': c = '\n'; break;
+                        case 'r': c = '\r'; break;
+                        case 't': c = '\t'; break;
+                        case 'b': c = '\b'; break;
+                        case 'a': c = '\a'; break;
+                        default: c = *p; break;
+                        }
+                        current = sdscatlen(current,&c,1);
+                    } else if (*p == '"') {
+                        /* closing quote must be followed by a space or
+                         * nothing at all. */
+                        if (*(p+1) && !isspace(*(p+1))) goto err;
+                        done=1;
+                    } else if (!*p) {
+                        /* unterminated quotes */
+                        goto err;
+                    } else {
+                        current = sdscatlen(current,p,1);
+                    }
+                } else if (insq) {
+                    if (*p == '\\' && *(p+1) == '\'') {
+                        p++;
+                        current = sdscatlen(current,"'",1);
+                    } else if (*p == '\'') {
+                        /* closing quote must be followed by a space or
+                         * nothing at all. */
+                        if (*(p+1) && !isspace(*(p+1))) goto err;
+                        done=1;
+                    } else if (!*p) {
+                        /* unterminated quotes */
+                        goto err;
+                    } else {
+                        current = sdscatlen(current,p,1);
+                    }
+                } else {
+                    switch(*p) {
+                    case ' ':
+                    case '\n':
+                    case '\r':
+                    case '\t':
+                    case '\0':
+                        done=1;
+                        break;
+                    case '"':
+                        inq=1;
+                        break;
+                    case '\'':
+                        insq=1;
+                        break;
+                    default:
+                        current = sdscatlen(current,p,1);
+                        break;
+                    }
+                }
+                if (*p) p++;
+            }
+            /* add the token to the vector */
+            vector = s_realloc(vector,((*argc)+1)*sizeof(char*));
+            vector[*argc] = current;
+            (*argc)++;
+            current = NULL;
+        } else {
+            /* Even on empty input string return something not NULL. */
+            if (vector == NULL) vector = s_malloc(sizeof(void*));
+            return vector;
+        }
+    }
+
+err:
+    while((*argc)--)
+        sdsfree(vector[*argc]);
+    s_free(vector);
+    if (current) sdsfree(current);
+    *argc = 0;
+    return NULL;
+}
+
+/* Modify the string substituting all the occurrences of the set of
+ * characters specified in the 'from' string to the corresponding character
+ * in the 'to' array.
+ *
+ * For instance: sdsmapchars(mystring, "ho", "01", 2)
+ * will have the effect of turning the string "hello" into "0ell1".
+ *
+ * The function returns the sds string pointer, that is always the same
+ * as the input pointer since no resize is needed. */
+sds sdsmapchars(sds s, const char *from, const char *to, size_t setlen) {
+    size_t j, i, l = sdslen(s);
+
+    for (j = 0; j < l; j++) {
+        for (i = 0; i < setlen; i++) {
+            if (s[j] == from[i]) {
+                s[j] = to[i];
+                break;
+            }
+        }
+    }
+    return s;
+}
+
+/* Join an array of C strings using the specified separator (also a C string).
+ * Returns the result as an sds string. */
+sds sdsjoin(char **argv, int argc, char *sep) {
+    sds join = sdsempty();
+    int j;
+
+    for (j = 0; j < argc; j++) {
+        join = sdscat(join, argv[j]);
+        if (j != argc-1) join = sdscat(join,sep);
+    }
+    return join;
+}
+
+/* Like sdsjoin, but joins an array of SDS strings. */
+sds sdsjoinsds(sds *argv, int argc, const char *sep, size_t seplen) {
+    sds join = sdsempty();
+    int j;
+
+    for (j = 0; j < argc; j++) {
+        join = sdscatsds(join, argv[j]);
+        if (j != argc-1) join = sdscatlen(join,sep,seplen);
+    }
+    return join;
+}
+
+/* Wrappers to the allocators used by SDS. Note that SDS will actually
+ * just use the macros defined into sdsalloc.h in order to avoid to pay
+ * the overhead of function calls. Here we define these wrappers only for
+ * the programs SDS is linked to, if they want to touch the SDS internals
+ * even if they use a different allocator. */
+void *sds_malloc(size_t size) { return s_malloc(size); }
+void *sds_realloc(void *ptr, size_t size) { return s_realloc(ptr,size); }
+void sds_free(void *ptr) { s_free(ptr); }
+
+#if defined(SDS_TEST_MAIN)
+#include <stdio.h>
+#include "testhelp.h"
+#include "limits.h"
+
+#define UNUSED(x) (void)(x)
+int sdsTest(void) {
+    {
+        sds x = sdsnew("foo"), y;
+
+        test_cond("Create a string and obtain the length",
+            sdslen(x) == 3 && memcmp(x,"foo\0",4) == 0)
+
+        sdsfree(x);
+        x = sdsnewlen("foo",2);
+        test_cond("Create a string with specified length",
+            sdslen(x) == 2 && memcmp(x,"fo\0",3) == 0)
+
+        x = sdscat(x,"bar");
+        test_cond("Strings concatenation",
+            sdslen(x) == 5 && memcmp(x,"fobar\0",6) == 0);
+
+        x = sdscpy(x,"a");
+        test_cond("sdscpy() against an originally longer string",
+            sdslen(x) == 1 && memcmp(x,"a\0",2) == 0)
+
+        x = sdscpy(x,"xyzxxxxxxxxxxyyyyyyyyyykkkkkkkkkk");
+        test_cond("sdscpy() against an originally shorter string",
+            sdslen(x) == 33 &&
+            memcmp(x,"xyzxxxxxxxxxxyyyyyyyyyykkkkkkkkkk\0",33) == 0)
+
+        sdsfree(x);
+        x = sdscatprintf(sdsempty(),"%d",123);
+        test_cond("sdscatprintf() seems working in the base case",
+            sdslen(x) == 3 && memcmp(x,"123\0",4) == 0)
+
+        sdsfree(x);
+        x = sdsnew("--");
+        x = sdscatfmt(x, "Hello %s World %I,%I--", "Hi!", LLONG_MIN,LLONG_MAX);
+        test_cond("sdscatfmt() seems working in the base case",
+            sdslen(x) == 60 &&
+            memcmp(x,"--Hello Hi! World -9223372036854775808,"
+                     "9223372036854775807--",60) == 0)
+        printf("[%s]\n",x);
+
+        sdsfree(x);
+        x = sdsnew("--");
+        x = sdscatfmt(x, "%u,%U--", UINT_MAX, ULLONG_MAX);
+        test_cond("sdscatfmt() seems working with unsigned numbers",
+            sdslen(x) == 35 &&
+            memcmp(x,"--4294967295,18446744073709551615--",35) == 0)
+
+        sdsfree(x);
+        x = sdsnew(" x ");
+        sdstrim(x," x");
+        test_cond("sdstrim() works when all chars match",
+            sdslen(x) == 0)
+
+        sdsfree(x);
+        x = sdsnew(" x ");
+        sdstrim(x," ");
+        test_cond("sdstrim() works when a single char remains",
+            sdslen(x) == 1 && x[0] == 'x')
+
+        sdsfree(x);
+        x = sdsnew("xxciaoyyy");
+        sdstrim(x,"xy");
+        test_cond("sdstrim() correctly trims characters",
+            sdslen(x) == 4 && memcmp(x,"ciao\0",5) == 0)
+
+        y = sdsdup(x);
+        sdsrange(y,1,1);
+        test_cond("sdsrange(...,1,1)",
+            sdslen(y) == 1 && memcmp(y,"i\0",2) == 0)
+
+        sdsfree(y);
+        y = sdsdup(x);
+        sdsrange(y,1,-1);
+        test_cond("sdsrange(...,1,-1)",
+            sdslen(y) == 3 && memcmp(y,"iao\0",4) == 0)
+
+        sdsfree(y);
+        y = sdsdup(x);
+        sdsrange(y,-2,-1);
+        test_cond("sdsrange(...,-2,-1)",
+            sdslen(y) == 2 && memcmp(y,"ao\0",3) == 0)
+
+        sdsfree(y);
+        y = sdsdup(x);
+        sdsrange(y,2,1);
+        test_cond("sdsrange(...,2,1)",
+            sdslen(y) == 0 && memcmp(y,"\0",1) == 0)
+
+        sdsfree(y);
+        y = sdsdup(x);
+        sdsrange(y,1,100);
+        test_cond("sdsrange(...,1,100)",
+            sdslen(y) == 3 && memcmp(y,"iao\0",4) == 0)
+
+        sdsfree(y);
+        y = sdsdup(x);
+        sdsrange(y,100,100);
+        test_cond("sdsrange(...,100,100)",
+            sdslen(y) == 0 && memcmp(y,"\0",1) == 0)
+
+        sdsfree(y);
+        sdsfree(x);
+        x = sdsnew("foo");
+        y = sdsnew("foa");
+        test_cond("sdscmp(foo,foa)", sdscmp(x,y) > 0)
+
+        sdsfree(y);
+        sdsfree(x);
+        x = sdsnew("bar");
+        y = sdsnew("bar");
+        test_cond("sdscmp(bar,bar)", sdscmp(x,y) == 0)
+
+        sdsfree(y);
+        sdsfree(x);
+        x = sdsnew("aar");
+        y = sdsnew("bar");
+        test_cond("sdscmp(bar,bar)", sdscmp(x,y) < 0)
+
+        sdsfree(y);
+        sdsfree(x);
+        x = sdsnewlen("\a\n\0foo\r",7);
+        y = sdscatrepr(sdsempty(),x,sdslen(x));
+        test_cond("sdscatrepr(...data...)",
+            memcmp(y,"\"\\a\\n\\x00foo\\r\"",15) == 0)
+
+        {
+            unsigned int oldfree;
+            char *p;
+            int step = 10, j, i;
+
+            sdsfree(x);
+            sdsfree(y);
+            x = sdsnew("0");
+            test_cond("sdsnew() free/len buffers", sdslen(x) == 1 && sdsavail(x) == 0);
+
+            /* Run the test a few times in order to hit the first two
+             * SDS header types. */
+            for (i = 0; i < 10; i++) {
+                int oldlen = sdslen(x);
+                x = sdsMakeRoomFor(x,step);
+                int type = x[-1]&SDS_TYPE_MASK;
+
+                test_cond("sdsMakeRoomFor() len", sdslen(x) == oldlen);
+                if (type != SDS_TYPE_5) {
+                    test_cond("sdsMakeRoomFor() free", sdsavail(x) >= step);
+                    oldfree = sdsavail(x);
+                }
+                p = x+oldlen;
+                for (j = 0; j < step; j++) {
+                    p[j] = 'A'+j;
+                }
+                sdsIncrLen(x,step);
+            }
+            test_cond("sdsMakeRoomFor() content",
+                memcmp("0ABCDEFGHIJABCDEFGHIJABCDEFGHIJABCDEFGHIJABCDEFGHIJABCDEFGHIJABCDEFGHIJABCDEFGHIJABCDEFGHIJABCDEFGHIJ",x,101) == 0);
+            test_cond("sdsMakeRoomFor() final length",sdslen(x)==101);
+
+            sdsfree(x);
+        }
+    }
+    test_report()
+    return 0;
+}
+#endif
+
+#ifdef SDS_TEST_MAIN
+int main(void) {
+    return sdsTest();
+}
+#endif
diff --git a/deps/sds/sds.h b/deps/sds/sds.h
new file mode 100644
index 0000000..adcc12c
--- /dev/null
+++ b/deps/sds/sds.h
@@ -0,0 +1,274 @@
+/* SDSLib 2.0 -- A C dynamic strings library
+ *
+ * Copyright (c) 2006-2015, Salvatore Sanfilippo <antirez at gmail dot com>
+ * Copyright (c) 2015, Oran Agra
+ * Copyright (c) 2015, Redis Labs, Inc
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   * Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *   * Neither the name of Redis nor the names of its contributors may be used
+ *     to endorse or promote products derived from this software without
+ *     specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __SDS_H
+#define __SDS_H
+
+#define SDS_MAX_PREALLOC (1024*1024)
+extern const char *SDS_NOINIT;
+
+#include <sys/types.h>
+#include <stdarg.h>
+#include <stdint.h>
+
+typedef char *sds;
+
+/* Note: sdshdr5 is never used, we just access the flags byte directly.
+ * However is here to document the layout of type 5 SDS strings. */
+struct __attribute__ ((__packed__)) sdshdr5 {
+    unsigned char flags; /* 3 lsb of type, and 5 msb of string length */
+    char buf[];
+};
+struct __attribute__ ((__packed__)) sdshdr8 {
+    uint8_t len; /* used */
+    uint8_t alloc; /* excluding the header and null terminator */
+    unsigned char flags; /* 3 lsb of type, 5 unused bits */
+    char buf[];
+};
+struct __attribute__ ((__packed__)) sdshdr16 {
+    uint16_t len; /* used */
+    uint16_t alloc; /* excluding the header and null terminator */
+    unsigned char flags; /* 3 lsb of type, 5 unused bits */
+    char buf[];
+};
+struct __attribute__ ((__packed__)) sdshdr32 {
+    uint32_t len; /* used */
+    uint32_t alloc; /* excluding the header and null terminator */
+    unsigned char flags; /* 3 lsb of type, 5 unused bits */
+    char buf[];
+};
+struct __attribute__ ((__packed__)) sdshdr64 {
+    uint64_t len; /* used */
+    uint64_t alloc; /* excluding the header and null terminator */
+    unsigned char flags; /* 3 lsb of type, 5 unused bits */
+    char buf[];
+};
+
+#define SDS_TYPE_5  0
+#define SDS_TYPE_8  1
+#define SDS_TYPE_16 2
+#define SDS_TYPE_32 3
+#define SDS_TYPE_64 4
+#define SDS_TYPE_MASK 7
+#define SDS_TYPE_BITS 3
+#define SDS_HDR_VAR(T,s) struct sdshdr##T *sh = (void*)((s)-(sizeof(struct sdshdr##T)));
+#define SDS_HDR(T,s) ((struct sdshdr##T *)((s)-(sizeof(struct sdshdr##T))))
+#define SDS_TYPE_5_LEN(f) ((f)>>SDS_TYPE_BITS)
+
+static inline size_t sdslen(const sds s) {
+    unsigned char flags = s[-1];
+    switch(flags&SDS_TYPE_MASK) {
+        case SDS_TYPE_5:
+            return SDS_TYPE_5_LEN(flags);
+        case SDS_TYPE_8:
+            return SDS_HDR(8,s)->len;
+        case SDS_TYPE_16:
+            return SDS_HDR(16,s)->len;
+        case SDS_TYPE_32:
+            return SDS_HDR(32,s)->len;
+        case SDS_TYPE_64:
+            return SDS_HDR(64,s)->len;
+    }
+    return 0;
+}
+
+static inline size_t sdsavail(const sds s) {
+    unsigned char flags = s[-1];
+    switch(flags&SDS_TYPE_MASK) {
+        case SDS_TYPE_5: {
+            return 0;
+        }
+        case SDS_TYPE_8: {
+            SDS_HDR_VAR(8,s);
+            return sh->alloc - sh->len;
+        }
+        case SDS_TYPE_16: {
+            SDS_HDR_VAR(16,s);
+            return sh->alloc - sh->len;
+        }
+        case SDS_TYPE_32: {
+            SDS_HDR_VAR(32,s);
+            return sh->alloc - sh->len;
+        }
+        case SDS_TYPE_64: {
+            SDS_HDR_VAR(64,s);
+            return sh->alloc - sh->len;
+        }
+    }
+    return 0;
+}
+
+static inline void sdssetlen(sds s, size_t newlen) {
+    unsigned char flags = s[-1];
+    switch(flags&SDS_TYPE_MASK) {
+        case SDS_TYPE_5:
+            {
+                unsigned char *fp = ((unsigned char*)s)-1;
+                *fp = SDS_TYPE_5 | (newlen << SDS_TYPE_BITS);
+            }
+            break;
+        case SDS_TYPE_8:
+            SDS_HDR(8,s)->len = newlen;
+            break;
+        case SDS_TYPE_16:
+            SDS_HDR(16,s)->len = newlen;
+            break;
+        case SDS_TYPE_32:
+            SDS_HDR(32,s)->len = newlen;
+            break;
+        case SDS_TYPE_64:
+            SDS_HDR(64,s)->len = newlen;
+            break;
+    }
+}
+
+static inline void sdsinclen(sds s, size_t inc) {
+    unsigned char flags = s[-1];
+    switch(flags&SDS_TYPE_MASK) {
+        case SDS_TYPE_5:
+            {
+                unsigned char *fp = ((unsigned char*)s)-1;
+                unsigned char newlen = SDS_TYPE_5_LEN(flags)+inc;
+                *fp = SDS_TYPE_5 | (newlen << SDS_TYPE_BITS);
+            }
+            break;
+        case SDS_TYPE_8:
+            SDS_HDR(8,s)->len += inc;
+            break;
+        case SDS_TYPE_16:
+            SDS_HDR(16,s)->len += inc;
+            break;
+        case SDS_TYPE_32:
+            SDS_HDR(32,s)->len += inc;
+            break;
+        case SDS_TYPE_64:
+            SDS_HDR(64,s)->len += inc;
+            break;
+    }
+}
+
+/* sdsalloc() = sdsavail() + sdslen() */
+static inline size_t sdsalloc(const sds s) {
+    unsigned char flags = s[-1];
+    switch(flags&SDS_TYPE_MASK) {
+        case SDS_TYPE_5:
+            return SDS_TYPE_5_LEN(flags);
+        case SDS_TYPE_8:
+            return SDS_HDR(8,s)->alloc;
+        case SDS_TYPE_16:
+            return SDS_HDR(16,s)->alloc;
+        case SDS_TYPE_32:
+            return SDS_HDR(32,s)->alloc;
+        case SDS_TYPE_64:
+            return SDS_HDR(64,s)->alloc;
+    }
+    return 0;
+}
+
+static inline void sdssetalloc(sds s, size_t newlen) {
+    unsigned char flags = s[-1];
+    switch(flags&SDS_TYPE_MASK) {
+        case SDS_TYPE_5:
+            /* Nothing to do, this type has no total allocation info. */
+            break;
+        case SDS_TYPE_8:
+            SDS_HDR(8,s)->alloc = newlen;
+            break;
+        case SDS_TYPE_16:
+            SDS_HDR(16,s)->alloc = newlen;
+            break;
+        case SDS_TYPE_32:
+            SDS_HDR(32,s)->alloc = newlen;
+            break;
+        case SDS_TYPE_64:
+            SDS_HDR(64,s)->alloc = newlen;
+            break;
+    }
+}
+
+sds sdsnewlen(const void *init, size_t initlen);
+sds sdsnew(const char *init);
+sds sdsempty(void);
+sds sdsdup(const sds s);
+void sdsfree(sds s);
+sds sdsgrowzero(sds s, size_t len);
+sds sdscatlen(sds s, const void *t, size_t len);
+sds sdscat(sds s, const char *t);
+sds sdscatsds(sds s, const sds t);
+sds sdscpylen(sds s, const char *t, size_t len);
+sds sdscpy(sds s, const char *t);
+
+sds sdscatvprintf(sds s, const char *fmt, va_list ap);
+#ifdef __GNUC__
+sds sdscatprintf(sds s, const char *fmt, ...)
+    __attribute__((format(printf, 2, 3)));
+#else
+sds sdscatprintf(sds s, const char *fmt, ...);
+#endif
+
+sds sdscatfmt(sds s, char const *fmt, ...);
+sds sdstrim(sds s, const char *cset);
+void sdsrange(sds s, ssize_t start, ssize_t end);
+void sdsupdatelen(sds s);
+void sdsclear(sds s);
+int sdscmp(const sds s1, const sds s2);
+sds *sdssplitlen(const char *s, ssize_t len, const char *sep, int seplen, int *count);
+void sdsfreesplitres(sds *tokens, int count);
+void sdstolower(sds s);
+void sdstoupper(sds s);
+sds sdsfromlonglong(long long value);
+sds sdscatrepr(sds s, const char *p, size_t len);
+sds *sdssplitargs(const char *line, int *argc);
+sds sdsmapchars(sds s, const char *from, const char *to, size_t setlen);
+sds sdsjoin(char **argv, int argc, char *sep);
+sds sdsjoinsds(sds *argv, int argc, const char *sep, size_t seplen);
+
+/* Low level functions exposed to the user API */
+sds sdsMakeRoomFor(sds s, size_t addlen);
+void sdsIncrLen(sds s, ssize_t incr);
+sds sdsRemoveFreeSpace(sds s);
+size_t sdsAllocSize(sds s);
+void *sdsAllocPtr(sds s);
+
+/* Export the allocator used by SDS to the program using SDS.
+ * Sometimes the program SDS is linked to, may use a different set of
+ * allocators, but may want to allocate or free things that SDS will
+ * respectively free or allocate. */
+void *sds_malloc(size_t size);
+void *sds_realloc(void *ptr, size_t size);
+void sds_free(void *ptr);
+
+#ifdef REDIS_TEST
+int sdsTest(int argc, char *argv[]);
+#endif
+
+#endif
diff --git a/deps/sds/sdsalloc.h b/deps/sds/sdsalloc.h
new file mode 100644
index 0000000..f43023c
--- /dev/null
+++ b/deps/sds/sdsalloc.h
@@ -0,0 +1,42 @@
+/* SDSLib 2.0 -- A C dynamic strings library
+ *
+ * Copyright (c) 2006-2015, Salvatore Sanfilippo <antirez at gmail dot com>
+ * Copyright (c) 2015, Oran Agra
+ * Copyright (c) 2015, Redis Labs, Inc
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   * Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *   * Neither the name of Redis nor the names of its contributors may be used
+ *     to endorse or promote products derived from this software without
+ *     specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* SDS allocator selection.
+ *
+ * This file is used in order to change the SDS allocator at compile time.
+ * Just define the following defines to what you want to use. Also add
+ * the include of your alternate allocator if needed (not needed in order
+ * to use the default libc allocator). */
+
+#define s_malloc malloc
+#define s_realloc realloc
+#define s_free free

From 772f4d8bd85d50c9a6910bcafae0221d97ad6408 Mon Sep 17 00:00:00 2001
From: luwenpeng <luwenpeng@geedgenetworks.com>
Date: Thu, 4 Aug 2022 18:07:34 +0800
Subject: [PATCH 12/17] Add timeout open source code to deps directory

---
 CMakeLists.txt                |   1 +
 deps/timeout/CMakeLists.txt   |   3 +
 deps/timeout/timeout-bitops.c | 249 ++++++++++++
 deps/timeout/timeout.c        | 744 ++++++++++++++++++++++++++++++++++
 deps/timeout/timeout.h        | 253 ++++++++++++
 5 files changed, 1250 insertions(+)
 create mode 100644 deps/timeout/CMakeLists.txt
 create mode 100644 deps/timeout/timeout-bitops.c
 create mode 100644 deps/timeout/timeout.c
 create mode 100644 deps/timeout/timeout.h

diff --git a/CMakeLists.txt b/CMakeLists.txt
index d5a530f..d1f406e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,6 +19,7 @@ include_directories(${CMAKE_SOURCE_DIR}/sdk/include)
 add_subdirectory(vendor)
 add_subdirectory(deps/toml)
 add_subdirectory(deps/sds)
+add_subdirectory(deps/timeout)
 add_subdirectory(src)
 add_subdirectory(sdk/example)
 
diff --git a/deps/timeout/CMakeLists.txt b/deps/timeout/CMakeLists.txt
new file mode 100644
index 0000000..e000160
--- /dev/null
+++ b/deps/timeout/CMakeLists.txt
@@ -0,0 +1,3 @@
+set(CMAKE_C_FLAGS "-std=c99")
+add_definitions(-fPIC)
+add_library(timeout STATIC timeout.c timeout-bitops.c)
\ No newline at end of file
diff --git a/deps/timeout/timeout-bitops.c b/deps/timeout/timeout-bitops.c
new file mode 100644
index 0000000..d8325db
--- /dev/null
+++ b/deps/timeout/timeout-bitops.c
@@ -0,0 +1,249 @@
+#include <stdint.h>
+#ifdef _MSC_VER
+#include <intrin.h>     /* _BitScanForward, _BitScanReverse */
+#endif
+
+/* First define ctz and clz functions; these are compiler-dependent if
+ * you want them to be fast. */
+#if defined(__GNUC__) && !defined(TIMEOUT_DISABLE_GNUC_BITOPS)
+
+/* On GCC and clang and some others, we can use __builtin functions. They
+ * are not defined for n==0, but timeout.s never calls them with n==0. */
+
+#define ctz64(n) __builtin_ctzll(n)
+#define clz64(n) __builtin_clzll(n)
+#if LONG_BITS == 32
+#define ctz32(n) __builtin_ctzl(n)
+#define clz32(n) __builtin_clzl(n)
+#else
+#define ctz32(n) __builtin_ctz(n)
+#define clz32(n) __builtin_clz(n)
+#endif
+
+#elif defined(_MSC_VER) && !defined(TIMEOUT_DISABLE_MSVC_BITOPS)
+
+/* On MSVC, we have these handy functions. We can ignore their return
+ * values, since we will never supply val == 0. */
+
+static __inline int ctz32(unsigned long val)
+{
+	DWORD zeros = 0;
+	_BitScanForward(&zeros, val);
+	return zeros;
+}
+static __inline int clz32(unsigned long val)
+{
+	DWORD zeros = 0;
+	_BitScanReverse(&zeros, val);
+	return zeros;
+}
+#ifdef _WIN64
+/* According to the documentation, these only exist on Win64. */
+static __inline int ctz64(uint64_t val)
+{
+	DWORD zeros = 0;
+	_BitScanForward64(&zeros, val);
+	return zeros;
+}
+static __inline int clz64(uint64_t val)
+{
+	DWORD zeros = 0;
+	_BitScanReverse64(&zeros, val);
+	return zeros;
+}
+#else
+static __inline int ctz64(uint64_t val)
+{
+	uint32_t lo = (uint32_t) val;
+	uint32_t hi = (uint32_t) (val >> 32);
+	return lo ? ctz32(lo) : 32 + ctz32(hi);
+}
+static __inline int clz64(uint64_t val)
+{
+	uint32_t lo = (uint32_t) val;
+	uint32_t hi = (uint32_t) (val >> 32);
+	return hi ? clz32(hi) : 32 + clz32(lo);
+}
+#endif
+
+/* End of MSVC case. */
+
+#else
+
+/* TODO: There are more clever ways to do this in the generic case. */
+
+
+#define process_(one, cz_bits, bits)					\
+	if (x < ( one << (cz_bits - bits))) { rv += bits; x <<= bits; }
+
+#define process64(bits) process_((UINT64_C(1)), 64, (bits))
+static inline int clz64(uint64_t x)
+{
+	int rv = 0;
+
+	process64(32);
+	process64(16);
+	process64(8);
+	process64(4);
+	process64(2);
+	process64(1);
+	return rv;
+}
+#define process32(bits) process_((UINT32_C(1)), 32, (bits))
+static inline int clz32(uint32_t x)
+{
+	int rv = 0;
+
+	process32(16);
+	process32(8);
+	process32(4);
+	process32(2);
+	process32(1);
+	return rv;
+}
+
+#undef process_
+#undef process32
+#undef process64
+#define process_(one, bits)						\
+	if ((x & ((one << (bits))-1)) == 0) { rv += bits; x >>= bits; }
+
+#define process64(bits) process_((UINT64_C(1)), bits)
+static inline int ctz64(uint64_t x)
+{
+	int rv = 0;
+
+	process64(32);
+	process64(16);
+	process64(8);
+	process64(4);
+	process64(2);
+	process64(1);
+	return rv;
+}
+
+#define process32(bits) process_((UINT32_C(1)), bits)
+static inline int ctz32(uint32_t x)
+{
+	int rv = 0;
+
+	process32(16);
+	process32(8);
+	process32(4);
+	process32(2);
+	process32(1);
+	return rv;
+}
+
+#undef process32
+#undef process64
+#undef process_
+
+/* End of generic case */
+
+#endif /* End of defining ctz */
+
+#ifdef TEST_BITOPS
+#include <stdio.h>
+#include <stdlib.h>
+
+static uint64_t testcases[] = {
+	13371337 * 10,
+	100,
+	385789752,
+	82574,
+	(((uint64_t)1)<<63) + (((uint64_t)1)<<31) + 10101
+};
+
+static int
+naive_clz(int bits, uint64_t v)
+{
+	int r = 0;
+	uint64_t bit = ((uint64_t)1) << (bits-1);
+	while (bit && 0 == (v & bit)) {
+		r++;
+		bit >>= 1;
+	}
+	/* printf("clz(%d,%lx) -> %d\n", bits, v, r); */
+	return r;
+}
+
+static int
+naive_ctz(int bits, uint64_t v)
+{
+	int r = 0;
+	uint64_t bit = 1;
+	while (bit && 0 == (v & bit)) {
+		r++;
+		bit <<= 1;
+		if (r == bits)
+			break;
+	}
+	/* printf("ctz(%d,%lx) -> %d\n", bits, v, r); */
+	return r;
+}
+
+static int
+check(uint64_t vv)
+{
+	uint32_t v32 = (uint32_t) vv;
+
+	if (vv == 0)
+		return 1; /* c[tl]z64(0) is undefined. */
+
+	if (ctz64(vv) != naive_ctz(64, vv)) {
+		printf("mismatch with ctz64: %d\n", ctz64(vv));
+				exit(1);
+		return 0;
+	}
+	if (clz64(vv) != naive_clz(64, vv)) {
+		printf("mismatch with clz64: %d\n", clz64(vv));
+				exit(1);
+		return 0;
+	}
+
+	if (v32 == 0)
+		return 1; /* c[lt]z(0) is undefined. */
+
+	if (ctz32(v32) != naive_ctz(32, v32)) {
+		printf("mismatch with ctz32: %d\n", ctz32(v32));
+		exit(1);
+		return 0;
+	}
+	if (clz32(v32) != naive_clz(32, v32)) {
+		printf("mismatch with clz32: %d\n", clz32(v32));
+				exit(1);
+		return 0;
+	}
+	return 1;
+}
+
+int
+main(int c, char **v)
+{
+	unsigned int i;
+	const unsigned int n = sizeof(testcases)/sizeof(testcases[0]);
+	int result = 0;
+
+	for (i = 0; i <= 63; ++i) {
+		uint64_t x = 1 << i;
+		if (!check(x))
+			result = 1;
+		--x;
+		if (!check(x))
+			result = 1;
+	}
+
+	for (i = 0; i < n; ++i) {
+		if (! check(testcases[i]))
+			result = 1;
+	}
+	if (result) {
+		puts("FAIL");
+	} else {
+		puts("OK");
+	}
+	return result;
+}
+#endif
+
diff --git a/deps/timeout/timeout.c b/deps/timeout/timeout.c
new file mode 100644
index 0000000..e78f57d
--- /dev/null
+++ b/deps/timeout/timeout.c
@@ -0,0 +1,744 @@
+/* ==========================================================================
+ * timeout.c - Tickless hierarchical timing wheel.
+ * --------------------------------------------------------------------------
+ * Copyright (c) 2013, 2014  William Ahern
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to permit
+ * persons to whom the Software is furnished to do so, subject to the
+ * following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+ * NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * ==========================================================================
+ */
+#include <limits.h>    /* CHAR_BIT */
+
+#include <stddef.h>    /* NULL */
+#include <stdlib.h>    /* malloc(3) free(3) */
+#include <stdio.h>     /* FILE fprintf(3) */
+
+#include <inttypes.h>  /* UINT64_C uint64_t */
+
+#include <string.h>    /* memset(3) */
+
+#include <errno.h>     /* errno */
+
+#include <sys/queue.h> /* TAILQ(3) */
+
+#include "timeout.h"
+
+#if TIMEOUT_DEBUG - 0
+#include "timeout-debug.h"
+#endif
+
+#ifdef TIMEOUT_DISABLE_RELATIVE_ACCESS
+#define TO_SET_TIMEOUTS(to, T) ((void)0)
+#else
+#define TO_SET_TIMEOUTS(to, T) ((to)->timeouts = (T))
+#endif
+
+/*
+ * A N C I L L A R Y  R O U T I N E S
+ *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#define abstime_t timeout_t /* for documentation purposes */
+#define reltime_t timeout_t /* "" */
+
+#if !defined countof
+#define countof(a) (sizeof (a) / sizeof *(a))
+#endif
+
+#if !defined endof
+#define endof(a) (&(a)[countof(a)])
+#endif
+
+#if !defined MIN
+#define MIN(a, b) (((a) < (b))? (a) : (b))
+#endif
+
+#if !defined MAX
+#define MAX(a, b) (((a) > (b))? (a) : (b))
+#endif
+
+#if !defined TAILQ_CONCAT
+#define TAILQ_CONCAT(head1, head2, field) do {                          \
+	if (!TAILQ_EMPTY(head2)) {                                      \
+		*(head1)->tqh_last = (head2)->tqh_first;                \
+		(head2)->tqh_first->field.tqe_prev = (head1)->tqh_last; \
+		(head1)->tqh_last = (head2)->tqh_last;                  \
+		TAILQ_INIT((head2));                                    \
+	}                                                               \
+} while (0)
+#endif
+
+#if !defined TAILQ_FOREACH_SAFE
+#define TAILQ_FOREACH_SAFE(var, head, field, tvar)                      \
+	for ((var) = TAILQ_FIRST(head);                                 \
+	    (var) && ((tvar) = TAILQ_NEXT(var, field), 1);              \
+	    (var) = (tvar))
+#endif
+
+
+/*
+ * B I T  M A N I P U L A T I O N  R O U T I N E S
+ *
+ * The macros and routines below implement wheel parameterization. The
+ * inputs are:
+ *
+ *   WHEEL_BIT - The number of value bits mapped in each wheel. The
+ *               lowest-order WHEEL_BIT bits index the lowest-order (highest
+ *               resolution) wheel, the next group of WHEEL_BIT bits the
+ *               higher wheel, etc.
+ *
+ *   WHEEL_NUM - The number of wheels. WHEEL_BIT * WHEEL_NUM = the number of
+ *               value bits used by all the wheels. For the default of 6 and
+ *               4, only the low 24 bits are processed. Any timeout value
+ *               larger than this will cycle through again.
+ *
+ * The implementation uses bit fields to remember which slot in each wheel
+ * is populated, and to generate masks of expiring slots according to the
+ * current update interval (i.e. the "tickless" aspect). The slots to
+ * process in a wheel are (populated-set & interval-mask).
+ *
+ * WHEEL_BIT cannot be larger than 6 bits because 2^6 -> 64 is the largest
+ * number of slots which can be tracked in a uint64_t integer bit field.
+ * WHEEL_BIT cannot be smaller than 3 bits because of our rotr and rotl
+ * routines, which only operate on all the value bits in an integer, and
+ * there's no integer smaller than uint8_t.
+ *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#if !defined WHEEL_BIT
+#define WHEEL_BIT 6
+#endif
+
+#if !defined WHEEL_NUM
+#define WHEEL_NUM 4
+#endif
+
+#define WHEEL_LEN (1U << WHEEL_BIT)
+#define WHEEL_MAX (WHEEL_LEN - 1)
+#define WHEEL_MASK (WHEEL_LEN - 1)
+#define TIMEOUT_MAX ((TIMEOUT_C(1) << (WHEEL_BIT * WHEEL_NUM)) - 1)
+
+#include "timeout-bitops.c"
+
+#if WHEEL_BIT == 6
+#define ctz(n) ctz64(n)
+#define clz(n) clz64(n)
+#define fls(n) ((int)(64 - clz64(n)))
+#else
+#define ctz(n) ctz32(n)
+#define clz(n) clz32(n)
+#define fls(n) ((int)(32 - clz32(n)))
+#endif
+
+#if WHEEL_BIT == 6
+#define WHEEL_C(n) UINT64_C(n)
+#define WHEEL_PRIu PRIu64
+#define WHEEL_PRIx PRIx64
+
+typedef uint64_t wheel_t;
+
+#elif WHEEL_BIT == 5
+
+#define WHEEL_C(n) UINT32_C(n)
+#define WHEEL_PRIu PRIu32
+#define WHEEL_PRIx PRIx32
+
+typedef uint32_t wheel_t;
+
+#elif WHEEL_BIT == 4
+
+#define WHEEL_C(n) UINT16_C(n)
+#define WHEEL_PRIu PRIu16
+#define WHEEL_PRIx PRIx16
+
+typedef uint16_t wheel_t;
+
+#elif WHEEL_BIT == 3
+
+#define WHEEL_C(n) UINT8_C(n)
+#define WHEEL_PRIu PRIu8
+#define WHEEL_PRIx PRIx8
+
+typedef uint8_t wheel_t;
+
+#else
+#error invalid WHEEL_BIT value
+#endif
+
+
+static inline wheel_t rotl(const wheel_t v, int c) {
+	if (!(c &= (sizeof v * CHAR_BIT - 1)))
+		return v;
+
+	return (v << c) | (v >> (sizeof v * CHAR_BIT - c));
+} /* rotl() */
+
+
+static inline wheel_t rotr(const wheel_t v, int c) {
+	if (!(c &= (sizeof v * CHAR_BIT - 1)))
+		return v;
+
+	return (v >> c) | (v << (sizeof v * CHAR_BIT - c));
+} /* rotr() */
+
+
+/*
+ * T I M E R  R O U T I N E S
+ *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+TAILQ_HEAD(timeout_list, timeout);
+
+struct timeouts {
+	struct timeout_list wheel[WHEEL_NUM][WHEEL_LEN], expired;
+
+	wheel_t pending[WHEEL_NUM];
+
+	timeout_t curtime;
+	timeout_t hertz;
+}; /* struct timeouts */
+
+
+static struct timeouts *timeouts_init(struct timeouts *T, timeout_t hz) {
+	unsigned i, j;
+
+	for (i = 0; i < countof(T->wheel); i++) {
+		for (j = 0; j < countof(T->wheel[i]); j++) {
+			TAILQ_INIT(&T->wheel[i][j]);
+		}
+	}
+
+	TAILQ_INIT(&T->expired);
+
+	for (i = 0; i < countof(T->pending); i++) {
+		T->pending[i] = 0;
+	}
+
+	T->curtime = 0;
+	T->hertz = (hz)? hz : TIMEOUT_mHZ;
+
+	return T;
+} /* timeouts_init() */
+
+
+TIMEOUT_PUBLIC struct timeouts *timeouts_open(timeout_t hz, int *error) {
+	struct timeouts *T;
+
+	if ((T = malloc(sizeof *T)))
+		return timeouts_init(T, hz);
+
+	*error = errno;
+
+	return NULL;
+} /* timeouts_open() */
+
+
+static void timeouts_reset(struct timeouts *T) {
+	struct timeout_list reset;
+	struct timeout *to;
+	unsigned i, j;
+
+	TAILQ_INIT(&reset);
+
+	for (i = 0; i < countof(T->wheel); i++) {
+		for (j = 0; j < countof(T->wheel[i]); j++) {
+			TAILQ_CONCAT(&reset, &T->wheel[i][j], tqe);
+		}
+	}
+
+	TAILQ_CONCAT(&reset, &T->expired, tqe);
+
+	TAILQ_FOREACH(to, &reset, tqe) {
+		to->pending = NULL;
+		TO_SET_TIMEOUTS(to, NULL);
+	}
+} /* timeouts_reset() */
+
+
+TIMEOUT_PUBLIC void timeouts_close(struct timeouts *T) {
+	/*
+	 * NOTE: Delete installed timeouts so timeout_pending() and
+	 * timeout_expired() worked as expected.
+	 */
+	timeouts_reset(T);
+
+	free(T);
+} /* timeouts_close() */
+
+
+TIMEOUT_PUBLIC timeout_t timeouts_hz(struct timeouts *T) {
+	return T->hertz;
+} /* timeouts_hz() */
+
+
+TIMEOUT_PUBLIC void timeouts_del(struct timeouts *T, struct timeout *to) {
+	if (to->pending) {
+		TAILQ_REMOVE(to->pending, to, tqe);
+
+		if (to->pending != &T->expired && TAILQ_EMPTY(to->pending)) {
+			ptrdiff_t index = to->pending - &T->wheel[0][0];
+			int wheel = index / WHEEL_LEN;
+			int slot = index % WHEEL_LEN;
+
+			T->pending[wheel] &= ~(WHEEL_C(1) << slot);
+		}
+
+		to->pending = NULL;
+		TO_SET_TIMEOUTS(to, NULL);
+	}
+} /* timeouts_del() */
+
+
+static inline reltime_t timeout_rem(struct timeouts *T, struct timeout *to) {
+	return to->expires - T->curtime;
+} /* timeout_rem() */
+
+
+static inline int timeout_wheel(timeout_t timeout) {
+	/* must be called with timeout != 0, so fls input is nonzero */
+	return (fls(MIN(timeout, TIMEOUT_MAX)) - 1) / WHEEL_BIT;
+} /* timeout_wheel() */
+
+
+static inline int timeout_slot(int wheel, timeout_t expires) {
+	return WHEEL_MASK & ((expires >> (wheel * WHEEL_BIT)) - !!wheel);
+} /* timeout_slot() */
+
+
+static void timeouts_sched(struct timeouts *T, struct timeout *to, timeout_t expires) {
+	timeout_t rem;
+	int wheel, slot;
+
+	timeouts_del(T, to);
+
+	to->expires = expires;
+
+	TO_SET_TIMEOUTS(to, T);
+
+	if (expires > T->curtime) {
+		rem = timeout_rem(T, to);
+
+		/* rem is nonzero since:
+		 *   rem == timeout_rem(T,to),
+		 *       == to->expires - T->curtime
+		 *   and above we have expires > T->curtime.
+		 */
+		wheel = timeout_wheel(rem);
+		slot = timeout_slot(wheel, to->expires);
+
+		to->pending = &T->wheel[wheel][slot];
+		TAILQ_INSERT_TAIL(to->pending, to, tqe);
+
+		T->pending[wheel] |= WHEEL_C(1) << slot;
+	} else {
+		to->pending = &T->expired;
+		TAILQ_INSERT_TAIL(to->pending, to, tqe);
+	}
+} /* timeouts_sched() */
+
+
+#ifndef TIMEOUT_DISABLE_INTERVALS
+static void timeouts_readd(struct timeouts *T, struct timeout *to) {
+	to->expires += to->interval;
+
+	if (to->expires <= T->curtime) {
+		/* If we've missed the next firing of this timeout, reschedule
+		 * it to occur at the next multiple of its interval after
+		 * the last time that it fired.
+		 */
+		timeout_t n = T->curtime - to->expires;
+		timeout_t r = n % to->interval;
+		to->expires = T->curtime + (to->interval - r);
+	}
+
+	timeouts_sched(T, to, to->expires);
+} /* timeouts_readd() */
+#endif
+
+
+TIMEOUT_PUBLIC void timeouts_add(struct timeouts *T, struct timeout *to, timeout_t timeout) {
+#ifndef TIMEOUT_DISABLE_INTERVALS
+	if (to->flags & TIMEOUT_INT)
+		to->interval = MAX(1, timeout);
+#endif
+
+	if (to->flags & TIMEOUT_ABS)
+		timeouts_sched(T, to, timeout);
+	else
+		timeouts_sched(T, to, T->curtime + timeout);
+} /* timeouts_add() */
+
+
+TIMEOUT_PUBLIC void timeouts_update(struct timeouts *T, abstime_t curtime) {
+	timeout_t elapsed = curtime - T->curtime;
+	struct timeout_list todo;
+	int wheel;
+
+	TAILQ_INIT(&todo);
+
+	/*
+	 * There's no avoiding looping over every wheel. It's best to keep
+	 * WHEEL_NUM smallish.
+	 */
+	for (wheel = 0; wheel < WHEEL_NUM; wheel++) {
+		wheel_t pending;
+
+		/*
+		 * Calculate the slots expiring in this wheel
+		 *
+		 * If the elapsed time is greater than the maximum period of
+		 * the wheel, mark every position as expiring.
+		 *
+		 * Otherwise, to determine the expired slots fill in all the
+		 * bits between the last slot processed and the current
+		 * slot, inclusive of the last slot. We'll bitwise-AND this
+		 * with our pending set below.
+		 *
+		 * If a wheel rolls over, force a tick of the next higher
+		 * wheel.
+		 */
+		if ((elapsed >> (wheel * WHEEL_BIT)) > WHEEL_MAX) {
+			pending = (wheel_t)~WHEEL_C(0);
+		} else {
+			wheel_t _elapsed = WHEEL_MASK & (elapsed >> (wheel * WHEEL_BIT));
+			int oslot, nslot;
+
+			/*
+			 * TODO: It's likely that at least one of the
+			 * following three bit fill operations is redundant
+			 * or can be replaced with a simpler operation.
+			 */
+			oslot = WHEEL_MASK & (T->curtime >> (wheel * WHEEL_BIT));
+			pending = rotl(((UINT64_C(1) << _elapsed) - 1), oslot);
+
+			nslot = WHEEL_MASK & (curtime >> (wheel * WHEEL_BIT));
+			pending |= rotr(rotl(((WHEEL_C(1) << _elapsed) - 1), nslot), _elapsed);
+			pending |= WHEEL_C(1) << nslot;
+		}
+
+		while (pending & T->pending[wheel]) {
+			/* ctz input cannot be zero: loop condition. */
+			int slot = ctz(pending & T->pending[wheel]);
+			TAILQ_CONCAT(&todo, &T->wheel[wheel][slot], tqe);
+			T->pending[wheel] &= ~(UINT64_C(1) << slot);
+		}
+
+		if (!(0x1 & pending))
+			break; /* break if we didn't wrap around end of wheel */
+
+		/* if we're continuing, the next wheel must tick at least once */
+		elapsed = MAX(elapsed, (WHEEL_LEN << (wheel * WHEEL_BIT)));
+	}
+
+	T->curtime = curtime;
+
+	while (!TAILQ_EMPTY(&todo)) {
+		struct timeout *to = TAILQ_FIRST(&todo);
+
+		TAILQ_REMOVE(&todo, to, tqe);
+		to->pending = NULL;
+
+		timeouts_sched(T, to, to->expires);
+	}
+
+	return;
+} /* timeouts_update() */
+
+
+TIMEOUT_PUBLIC void timeouts_step(struct timeouts *T, reltime_t elapsed) {
+	timeouts_update(T, T->curtime + elapsed);
+} /* timeouts_step() */
+
+
+TIMEOUT_PUBLIC bool timeouts_pending(struct timeouts *T) {
+	wheel_t pending = 0;
+	int wheel;
+
+	for (wheel = 0; wheel < WHEEL_NUM; wheel++) {
+		pending |= T->pending[wheel];
+	}
+
+	return !!pending;
+} /* timeouts_pending() */
+
+
+TIMEOUT_PUBLIC bool timeouts_expired(struct timeouts *T) {
+	return !TAILQ_EMPTY(&T->expired);
+} /* timeouts_expired() */
+
+
+/*
+ * Calculate the interval before needing to process any timeouts pending on
+ * any wheel.
+ *
+ * (This is separated from the public API routine so we can evaluate our
+ * wheel invariant assertions irrespective of the expired queue.)
+ *
+ * This might return a timeout value sooner than any installed timeout if
+ * only higher-order wheels have timeouts pending. We can only know when to
+ * process a wheel, not precisely when a timeout is scheduled. Our timeout
+ * accuracy could be off by 2^(N*M)-1 units where N is the wheel number and
+ * M is WHEEL_BIT. Only timeouts which have fallen through to wheel 0 can be
+ * known exactly.
+ *
+ * We should never return a timeout larger than the lowest actual timeout.
+ */
+static timeout_t timeouts_int(struct timeouts *T) {
+	timeout_t timeout = ~TIMEOUT_C(0), _timeout;
+	timeout_t relmask;
+	int wheel, slot;
+
+	relmask = 0;
+
+	for (wheel = 0; wheel < WHEEL_NUM; wheel++) {
+		if (T->pending[wheel]) {
+			slot = WHEEL_MASK & (T->curtime >> (wheel * WHEEL_BIT));
+
+			/* ctz input cannot be zero: T->pending[wheel] is
+			 * nonzero, so rotr() is nonzero. */
+			_timeout = (ctz(rotr(T->pending[wheel], slot)) + !!wheel) << (wheel * WHEEL_BIT);
+			/* +1 to higher order wheels as those timeouts are one rotation in the future (otherwise they'd be on a lower wheel or expired) */
+
+			_timeout -= relmask & T->curtime;
+			/* reduce by how much lower wheels have progressed */
+
+			timeout = MIN(_timeout, timeout);
+		}
+
+		relmask <<= WHEEL_BIT; 
+		relmask |= WHEEL_MASK;
+	}
+
+	return timeout;
+} /* timeouts_int() */
+
+
+/*
+ * Calculate the interval our caller can wait before needing to process
+ * events.
+ */
+TIMEOUT_PUBLIC timeout_t timeouts_timeout(struct timeouts *T) {
+	if (!TAILQ_EMPTY(&T->expired))
+		return 0;
+
+	return timeouts_int(T);
+} /* timeouts_timeout() */
+
+
+TIMEOUT_PUBLIC struct timeout *timeouts_get(struct timeouts *T) {
+	if (!TAILQ_EMPTY(&T->expired)) {
+		struct timeout *to = TAILQ_FIRST(&T->expired);
+
+		TAILQ_REMOVE(&T->expired, to, tqe);
+		to->pending = NULL;
+		TO_SET_TIMEOUTS(to, NULL);
+
+#ifndef TIMEOUT_DISABLE_INTERVALS
+		if ((to->flags & TIMEOUT_INT) && to->interval > 0)
+			timeouts_readd(T, to);
+#endif
+
+		return to;
+	} else {
+		return 0;
+	}
+} /* timeouts_get() */
+
+
+/*
+ * Use dumb looping to locate the earliest timeout pending on the wheel so
+ * our invariant assertions can check the result of our optimized code.
+ */
+static struct timeout *timeouts_min(struct timeouts *T) {
+	struct timeout *to, *min = NULL;
+	unsigned i, j;
+
+	for (i = 0; i < countof(T->wheel); i++) {
+		for (j = 0; j < countof(T->wheel[i]); j++) {
+			TAILQ_FOREACH(to, &T->wheel[i][j], tqe) {
+				if (!min || to->expires < min->expires)
+					min = to;
+			}
+		}
+	}
+
+	return min;
+} /* timeouts_min() */
+
+
+/*
+ * Check some basic algorithm invariants. If these invariants fail then
+ * something is definitely broken.
+ */
+#define report(...) do { \
+	if ((fp)) \
+		fprintf(fp, __VA_ARGS__); \
+} while (0)
+
+#define check(expr, ...) do { \
+	if (!(expr)) { \
+		report(__VA_ARGS__); \
+		return 0; \
+	} \
+} while (0)
+
+TIMEOUT_PUBLIC bool timeouts_check(struct timeouts *T, FILE *fp) {
+	timeout_t timeout;
+	struct timeout *to;
+
+	if ((to = timeouts_min(T))) {
+		check(to->expires > T->curtime, "missed timeout (expires:%" TIMEOUT_PRIu " <= curtime:%" TIMEOUT_PRIu ")\n", to->expires, T->curtime);
+
+		timeout = timeouts_int(T);
+		check(timeout <= to->expires - T->curtime, "wrong soft timeout (soft:%" TIMEOUT_PRIu " > hard:%" TIMEOUT_PRIu ") (expires:%" TIMEOUT_PRIu "; curtime:%" TIMEOUT_PRIu ")\n", timeout, (to->expires - T->curtime), to->expires, T->curtime);
+
+		timeout = timeouts_timeout(T);
+		check(timeout <= to->expires - T->curtime, "wrong soft timeout (soft:%" TIMEOUT_PRIu " > hard:%" TIMEOUT_PRIu ") (expires:%" TIMEOUT_PRIu "; curtime:%" TIMEOUT_PRIu ")\n", timeout, (to->expires - T->curtime), to->expires, T->curtime);
+	} else {
+		timeout = timeouts_timeout(T);
+
+		if (!TAILQ_EMPTY(&T->expired))
+			check(timeout == 0, "wrong soft timeout (soft:%" TIMEOUT_PRIu " != hard:%" TIMEOUT_PRIu ")\n", timeout, TIMEOUT_C(0));
+		else
+			check(timeout == ~TIMEOUT_C(0), "wrong soft timeout (soft:%" TIMEOUT_PRIu " != hard:%" TIMEOUT_PRIu ")\n", timeout, ~TIMEOUT_C(0));
+	}
+
+	return 1;
+} /* timeouts_check() */
+
+
+#define ENTER                                                           \
+	do {                                                            \
+	static const int pc0 = __LINE__;                                \
+	switch (pc0 + it->pc) {                                         \
+	case __LINE__: (void)0
+
+#define SAVE_AND_DO(do_statement)                                       \
+	do {                                                            \
+		it->pc = __LINE__ - pc0;                                \
+		do_statement;                                           \
+		case __LINE__: (void)0;                                 \
+	} while (0)
+
+#define YIELD(rv)                                                       \
+	SAVE_AND_DO(return (rv))
+
+#define LEAVE                                                           \
+	SAVE_AND_DO(break);                                             \
+	}                                                               \
+	} while (0)
+
+TIMEOUT_PUBLIC struct timeout *timeouts_next(struct timeouts *T, struct timeouts_it *it) {
+	struct timeout *to;
+
+	ENTER;
+
+	if (it->flags & TIMEOUTS_EXPIRED) {
+		if (it->flags & TIMEOUTS_CLEAR) {
+			while ((to = timeouts_get(T))) {
+				YIELD(to);
+			}
+		} else {
+			TAILQ_FOREACH_SAFE(to, &T->expired, tqe, it->to) {
+				YIELD(to);
+			}
+		}
+	}
+
+	if (it->flags & TIMEOUTS_PENDING) {
+		for (it->i = 0; it->i < countof(T->wheel); it->i++) {
+			for (it->j = 0; it->j < countof(T->wheel[it->i]); it->j++) {
+				TAILQ_FOREACH_SAFE(to, &T->wheel[it->i][it->j], tqe, it->to) {
+					YIELD(to);
+				}
+			}
+		}
+	}
+
+	LEAVE;
+
+	return NULL;
+} /* timeouts_next */
+
+#undef LEAVE
+#undef YIELD
+#undef SAVE_AND_DO
+#undef ENTER
+
+
+/*
+ * T I M E O U T  R O U T I N E S
+ *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+TIMEOUT_PUBLIC struct timeout *timeout_init(struct timeout *to, int flags) {
+	memset(to, 0, sizeof *to);
+
+	to->flags = flags;
+
+	return to;
+} /* timeout_init() */
+
+
+#ifndef TIMEOUT_DISABLE_RELATIVE_ACCESS
+TIMEOUT_PUBLIC bool timeout_pending(struct timeout *to) {
+	return to->pending && to->pending != &to->timeouts->expired;
+} /* timeout_pending() */
+
+
+TIMEOUT_PUBLIC bool timeout_expired(struct timeout *to) {
+	return to->pending && to->pending == &to->timeouts->expired;
+} /* timeout_expired() */
+
+
+TIMEOUT_PUBLIC void timeout_del(struct timeout *to) {
+	timeouts_del(to->timeouts, to);
+} /* timeout_del() */
+#endif
+
+
+/*
+ * V E R S I O N  I N T E R F A C E S
+ *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+TIMEOUT_PUBLIC int timeout_version(void) {
+	return TIMEOUT_VERSION;
+} /* timeout_version() */
+
+
+TIMEOUT_PUBLIC const char *timeout_vendor(void) {
+	return TIMEOUT_VENDOR;
+} /* timeout_version() */
+
+
+TIMEOUT_PUBLIC int timeout_v_rel(void) {
+	return TIMEOUT_V_REL;
+} /* timeout_version() */
+
+
+TIMEOUT_PUBLIC int timeout_v_abi(void) {
+	return TIMEOUT_V_ABI;
+} /* timeout_version() */
+
+
+TIMEOUT_PUBLIC int timeout_v_api(void) {
+	return TIMEOUT_V_API;
+} /* timeout_version() */
+
diff --git a/deps/timeout/timeout.h b/deps/timeout/timeout.h
new file mode 100644
index 0000000..3ef76e9
--- /dev/null
+++ b/deps/timeout/timeout.h
@@ -0,0 +1,253 @@
+/* ==========================================================================
+ * timeout.h - Tickless hierarchical timing wheel.
+ * --------------------------------------------------------------------------
+ * Copyright (c) 2013, 2014  William Ahern
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to permit
+ * persons to whom the Software is furnished to do so, subject to the
+ * following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+ * NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * ==========================================================================
+ */
+#ifndef TIMEOUT_H
+#define TIMEOUT_H
+
+#include <stdbool.h>    /* bool */
+#include <stdio.h>      /* FILE */
+
+#include <inttypes.h>   /* PRIu64 PRIx64 PRIX64 uint64_t */
+
+#include <sys/queue.h>  /* TAILQ(3) */
+
+
+/*
+ * V E R S I O N  I N T E R F A C E S
+ *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#if !defined TIMEOUT_PUBLIC
+#define TIMEOUT_PUBLIC
+#endif
+
+#define TIMEOUT_VERSION TIMEOUT_V_REL
+#define TIMEOUT_VENDOR  "william@25thandClement.com"
+
+#define TIMEOUT_V_REL 0x20160226
+#define TIMEOUT_V_ABI 0x20160224
+#define TIMEOUT_V_API 0x20160226
+
+TIMEOUT_PUBLIC int timeout_version(void);
+
+TIMEOUT_PUBLIC const char *timeout_vendor(void);
+
+TIMEOUT_PUBLIC int timeout_v_rel(void);
+
+TIMEOUT_PUBLIC int timeout_v_abi(void);
+
+TIMEOUT_PUBLIC int timeout_v_api(void);
+
+
+/*
+ * I N T E G E R  T Y P E  I N T E R F A C E S
+ *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#define TIMEOUT_C(n) UINT64_C(n)
+#define TIMEOUT_PRIu PRIu64
+#define TIMEOUT_PRIx PRIx64
+#define TIMEOUT_PRIX PRIX64
+
+#define TIMEOUT_mHZ TIMEOUT_C(1000)
+#define TIMEOUT_uHZ TIMEOUT_C(1000000)
+#define TIMEOUT_nHZ TIMEOUT_C(1000000000)
+
+typedef uint64_t timeout_t;
+
+#define timeout_error_t int /* for documentation purposes */
+
+
+/*
+ * C A L L B A C K  I N T E R F A C E
+ *
+ * Callback function parameters unspecified to make embedding into existing
+ * applications easier.
+ *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#ifndef TIMEOUT_CB_OVERRIDE
+struct timeout_cb {
+	void (*fn)();
+	void *arg;
+}; /* struct timeout_cb */
+#endif
+
+/*
+ * T I M E O U T  I N T E R F A C E S
+ *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#ifndef TIMEOUT_DISABLE_INTERVALS
+#define TIMEOUT_INT 0x01 /* interval (repeating) timeout */
+#endif
+#define TIMEOUT_ABS 0x02 /* treat timeout values as absolute */
+
+#define TIMEOUT_INITIALIZER(flags) { (flags) }
+
+#define timeout_setcb(to, fn, arg) do { \
+	(to)->callback.fn = (fn);       \
+	(to)->callback.arg = (arg);     \
+} while (0)
+
+struct timeout {
+	int flags;
+
+	timeout_t expires;
+	/* absolute expiration time */
+
+	struct timeout_list *pending;
+	/* timeout list if pending on wheel or expiry queue */
+
+	TAILQ_ENTRY(timeout) tqe;
+	/* entry member for struct timeout_list lists */
+
+#ifndef TIMEOUT_DISABLE_CALLBACKS
+	struct timeout_cb callback;
+	/* optional callback information */
+#endif
+
+#ifndef TIMEOUT_DISABLE_INTERVALS
+	timeout_t interval;
+	/* timeout interval if periodic */
+#endif
+
+#ifndef TIMEOUT_DISABLE_RELATIVE_ACCESS
+	struct timeouts *timeouts;
+	/* timeouts collection if member of */
+#endif
+}; /* struct timeout */
+
+
+TIMEOUT_PUBLIC struct timeout *timeout_init(struct timeout *, int);
+/* initialize timeout structure (same as TIMEOUT_INITIALIZER) */
+
+#ifndef TIMEOUT_DISABLE_RELATIVE_ACCESS
+TIMEOUT_PUBLIC bool timeout_pending(struct timeout *);
+/* true if on timing wheel, false otherwise */
+ 
+TIMEOUT_PUBLIC bool timeout_expired(struct timeout *);
+/* true if on expired queue, false otherwise */
+
+TIMEOUT_PUBLIC void timeout_del(struct timeout *);
+/* remove timeout from any timing wheel (okay if not member of any) */
+#endif
+
+/*
+ * T I M I N G  W H E E L  I N T E R F A C E S
+ *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+struct timeouts;
+
+TIMEOUT_PUBLIC struct timeouts *timeouts_open(timeout_t, timeout_error_t *);
+/* open a new timing wheel, setting optional HZ (for float conversions) */
+
+TIMEOUT_PUBLIC void timeouts_close(struct timeouts *);
+/* destroy timing wheel */
+
+TIMEOUT_PUBLIC timeout_t timeouts_hz(struct timeouts *);
+/* return HZ setting (for float conversions) */
+
+TIMEOUT_PUBLIC void timeouts_update(struct timeouts *, timeout_t);
+/* update timing wheel with current absolute time */
+
+TIMEOUT_PUBLIC void timeouts_step(struct timeouts *, timeout_t);
+/* step timing wheel by relative time */
+
+TIMEOUT_PUBLIC timeout_t timeouts_timeout(struct timeouts *);
+/* return interval to next required update */
+
+TIMEOUT_PUBLIC void timeouts_add(struct timeouts *, struct timeout *, timeout_t);
+/* add timeout to timing wheel */
+
+TIMEOUT_PUBLIC void timeouts_del(struct timeouts *, struct timeout *);
+/* remove timeout from any timing wheel or expired queue (okay if on neither) */
+
+TIMEOUT_PUBLIC struct timeout *timeouts_get(struct timeouts *);
+/* return any expired timeout (caller should loop until NULL-return) */
+
+TIMEOUT_PUBLIC bool timeouts_pending(struct timeouts *);
+/* return true if any timeouts pending on timing wheel */
+
+TIMEOUT_PUBLIC bool timeouts_expired(struct timeouts *);
+/* return true if any timeouts on expired queue */
+
+TIMEOUT_PUBLIC bool timeouts_check(struct timeouts *, FILE *);
+/* return true if invariants hold. describes failures to optional file handle. */
+
+#define TIMEOUTS_PENDING 0x10
+#define TIMEOUTS_EXPIRED 0x20
+#define TIMEOUTS_ALL     (TIMEOUTS_PENDING|TIMEOUTS_EXPIRED)
+#define TIMEOUTS_CLEAR   0x40
+
+#define TIMEOUTS_IT_INITIALIZER(flags) { (flags), 0, 0, 0, 0 }
+
+#define TIMEOUTS_IT_INIT(cur, _flags) do {                              \
+	(cur)->flags = (_flags);                                        \
+	(cur)->pc = 0;                                                  \
+} while (0)
+
+struct timeouts_it {
+	int flags;
+	unsigned pc, i, j;
+	struct timeout *to;
+}; /* struct timeouts_it */
+
+TIMEOUT_PUBLIC struct timeout *timeouts_next(struct timeouts *, struct timeouts_it *);
+/* return next timeout in pending wheel or expired queue. caller can delete
+ * the returned timeout, but should not otherwise manipulate the timing
+ * wheel. in particular, caller SHOULD NOT delete any other timeout as that
+ * could invalidate cursor state and trigger a use-after-free.
+ */
+
+#define TIMEOUTS_FOREACH(var, T, flags)                                 \
+	struct timeouts_it _it = TIMEOUTS_IT_INITIALIZER((flags));      \
+	while (((var) = timeouts_next((T), &_it)))
+
+
+/*
+ * B O N U S  W H E E L  I N T E R F A C E S
+ *
+ * I usually use floating point timeouts in all my code, but it's cleaner to
+ * separate it to keep the core algorithmic code simple.
+ *
+ * Using macros instead of static inline routines where <math.h> routines
+ * might be used to keep -lm linking optional.
+ *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#include <math.h> /* ceil(3) */
+
+#define timeouts_f2i(T, f) \
+	((timeout_t)ceil((f) * timeouts_hz((T)))) /* prefer late expiration over early */
+
+#define timeouts_i2f(T, i) \
+	((double)(i) / timeouts_hz((T)))
+
+#define timeouts_addf(T, to, timeout) \
+	timeouts_add((T), (to), timeouts_f2i((T), (timeout)))
+
+#endif /* TIMEOUT_H */

From 209d7ea7cd7282ee1a3a962b0b8c28ae2708cc3f Mon Sep 17 00:00:00 2001
From: luwenpeng <luwenpeng@geedgenetworks.com>
Date: Fri, 5 Aug 2022 10:24:10 +0800
Subject: [PATCH 13/17] Update uthash v2.3.0 open source code to deps directory

---
 deps/uthash/utarray.h      |  9 ++---
 deps/uthash/uthash.h       | 68 ++++++++++++++++----------------------
 deps/uthash/utlist.h       |  4 +--
 deps/uthash/utringbuffer.h |  4 +--
 deps/uthash/utstack.h      |  8 ++---
 deps/uthash/utstring.h     |  4 +--
 6 files changed, 43 insertions(+), 54 deletions(-)

diff --git a/deps/uthash/utarray.h b/deps/uthash/utarray.h
index 6b62018..dc1cf8e 100644
--- a/deps/uthash/utarray.h
+++ b/deps/uthash/utarray.h
@@ -1,5 +1,5 @@
 /*
-Copyright (c) 2008-2018, Troy D. Hanson   http://troydhanson.github.com/uthash/
+Copyright (c) 2008-2022, Troy D. Hanson  https://troydhanson.github.io/uthash/
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
@@ -26,7 +26,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef UTARRAY_H
 #define UTARRAY_H
 
-#define UTARRAY_VERSION 2.1.0
+#define UTARRAY_VERSION 2.3.0
 
 #include <stddef.h>  /* size_t */
 #include <string.h>  /* memset, etc */
@@ -232,8 +232,9 @@ typedef struct {
 
 /* last we pre-define a few icd for common utarrays of ints and strings */
 static void utarray_str_cpy(void *dst, const void *src) {
-  char **_src = (char**)src, **_dst = (char**)dst;
-  *_dst = (*_src == NULL) ? NULL : strdup(*_src);
+  char *const *srcc = (char *const *)src;
+  char **dstc = (char**)dst;
+  *dstc = (*srcc == NULL) ? NULL : strdup(*srcc);
 }
 static void utarray_str_dtor(void *elt) {
   char **eltc = (char**)elt;
diff --git a/deps/uthash/uthash.h b/deps/uthash/uthash.h
index 5e5866a..49c69df 100644
--- a/deps/uthash/uthash.h
+++ b/deps/uthash/uthash.h
@@ -1,5 +1,5 @@
 /*
-Copyright (c) 2003-2018, Troy D. Hanson     http://troydhanson.github.com/uthash/
+Copyright (c) 2003-2022, Troy D. Hanson  https://troydhanson.github.io/uthash/
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
@@ -24,12 +24,22 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef UTHASH_H
 #define UTHASH_H
 
-#define UTHASH_VERSION 2.1.0
+#define UTHASH_VERSION 2.3.0
 
 #include <string.h>   /* memcmp, memset, strlen */
 #include <stddef.h>   /* ptrdiff_t */
 #include <stdlib.h>   /* exit */
 
+#if defined(HASH_DEFINE_OWN_STDINT) && HASH_DEFINE_OWN_STDINT
+/* This codepath is provided for backward compatibility, but I plan to remove it. */
+#warning "HASH_DEFINE_OWN_STDINT is deprecated; please use HASH_NO_STDINT instead"
+typedef unsigned int uint32_t;
+typedef unsigned char uint8_t;
+#elif defined(HASH_NO_STDINT) && HASH_NO_STDINT
+#else
+#include <stdint.h>   /* uint8_t, uint32_t */
+#endif
+
 /* These macros use decltype or the earlier __typeof GNU extension.
    As decltype is only available in newer compilers (VS2010 or gcc 4.3+
    when compiling c++ source) this code uses whatever method is needed
@@ -62,23 +72,6 @@ do {
 } while (0)
 #endif
 
-/* a number of the hash function use uint32_t which isn't defined on Pre VS2010 */
-#if defined(_WIN32)
-#if defined(_MSC_VER) && _MSC_VER >= 1600
-#include <stdint.h>
-#elif defined(__WATCOMC__) || defined(__MINGW32__) || defined(__CYGWIN__)
-#include <stdint.h>
-#else
-typedef unsigned int uint32_t;
-typedef unsigned char uint8_t;
-#endif
-#elif defined(__GNUC__) && !defined(__VXWORKS__)
-#include <stdint.h>
-#else
-typedef unsigned int uint32_t;
-typedef unsigned char uint8_t;
-#endif
-
 #ifndef uthash_malloc
 #define uthash_malloc(sz) malloc(sz)      /* malloc fcn                      */
 #endif
@@ -92,15 +85,12 @@ typedef unsigned char uint8_t;
 #define uthash_strlen(s) strlen(s)
 #endif
 
-#ifdef uthash_memcmp
-/* This warning will not catch programs that define uthash_memcmp AFTER including uthash.h. */
-#warning "uthash_memcmp is deprecated; please use HASH_KEYCMP instead"
-#else
-#define uthash_memcmp(a,b,n) memcmp(a,b,n)
+#ifndef HASH_FUNCTION
+#define HASH_FUNCTION(keyptr,keylen,hashv) HASH_JEN(keyptr, keylen, hashv)
 #endif
 
 #ifndef HASH_KEYCMP
-#define HASH_KEYCMP(a,b,n) uthash_memcmp(a,b,n)
+#define HASH_KEYCMP(a,b,n) memcmp(a,b,n)
 #endif
 
 #ifndef uthash_noexpand_fyi
@@ -158,7 +148,7 @@ do {
 
 #define HASH_VALUE(keyptr,keylen,hashv)                                          \
 do {                                                                             \
-  HASH_FCN(keyptr, keylen, hashv);                                               \
+  HASH_FUNCTION(keyptr, keylen, hashv);                                          \
 } while (0)
 
 #define HASH_FIND_BYHASHVALUE(hh,head,keyptr,keylen,hashval,out)                 \
@@ -408,7 +398,7 @@ do {
 do {                                                                             \
   IF_HASH_NONFATAL_OOM( int _ha_oomed = 0; )                                     \
   (add)->hh.hashv = (hashval);                                                   \
-  (add)->hh.key = (char*) (keyptr);                                              \
+  (add)->hh.key = (const void*) (keyptr);                                        \
   (add)->hh.keylen = (unsigned) (keylen_in);                                     \
   if (!(head)) {                                                                 \
     (add)->hh.next = NULL;                                                       \
@@ -590,13 +580,6 @@ do {
 #define HASH_EMIT_KEY(hh,head,keyptr,fieldlen)
 #endif
 
-/* default to Jenkin's hash unless overridden e.g. DHASH_FUNCTION=HASH_SAX */
-#ifdef HASH_FUNCTION
-#define HASH_FCN HASH_FUNCTION
-#else
-#define HASH_FCN HASH_JEN
-#endif
-
 /* The Bernstein hash function, used in Perl prior to v5.6. Note (x<<5+x)=x*33. */
 #define HASH_BER(key,keylen,hashv)                                               \
 do {                                                                             \
@@ -610,7 +593,9 @@ do {
 
 
 /* SAX/FNV/OAT/JEN hash functions are macro variants of those listed at
- * http://eternallyconfuzzled.com/tuts/algorithms/jsw_tut_hashing.aspx */
+ * http://eternallyconfuzzled.com/tuts/algorithms/jsw_tut_hashing.aspx
+ * (archive link: https://archive.is/Ivcan )
+ */
 #define HASH_SAX(key,keylen,hashv)                                               \
 do {                                                                             \
   unsigned _sx_i;                                                                \
@@ -695,7 +680,8 @@ do {
     case 4:  _hj_i += ( (unsigned)_hj_key[3] << 24 );  /* FALLTHROUGH */         \
     case 3:  _hj_i += ( (unsigned)_hj_key[2] << 16 );  /* FALLTHROUGH */         \
     case 2:  _hj_i += ( (unsigned)_hj_key[1] << 8 );   /* FALLTHROUGH */         \
-    case 1:  _hj_i += _hj_key[0];                                                \
+    case 1:  _hj_i += _hj_key[0];                      /* FALLTHROUGH */         \
+    default: ;                                                                   \
   }                                                                              \
   HASH_JEN_MIX(_hj_i, _hj_j, hashv);                                             \
 } while (0)
@@ -743,6 +729,8 @@ do {
     case 1: hashv += *_sfh_key;                                                  \
             hashv ^= hashv << 10;                                                \
             hashv += hashv >> 1;                                                 \
+            break;                                                               \
+    default: ;                                                                   \
   }                                                                              \
                                                                                  \
   /* Force "avalanching" of final 127 bits */                                    \
@@ -764,7 +752,7 @@ do {
   }                                                                              \
   while ((out) != NULL) {                                                        \
     if ((out)->hh.hashv == (hashval) && (out)->hh.keylen == (keylen_in)) {       \
-      if (HASH_KEYCMP((out)->hh.key, keyptr, keylen_in) == 0) {              \
+      if (HASH_KEYCMP((out)->hh.key, keyptr, keylen_in) == 0) {                  \
         break;                                                                   \
       }                                                                          \
     }                                                                            \
@@ -850,12 +838,12 @@ do {
   struct UT_hash_handle *_he_thh, *_he_hh_nxt;                                   \
   UT_hash_bucket *_he_new_buckets, *_he_newbkt;                                  \
   _he_new_buckets = (UT_hash_bucket*)uthash_malloc(                              \
-           2UL * (tbl)->num_buckets * sizeof(struct UT_hash_bucket));            \
+           sizeof(struct UT_hash_bucket) * (tbl)->num_buckets * 2U);             \
   if (!_he_new_buckets) {                                                        \
     HASH_RECORD_OOM(oomed);                                                      \
   } else {                                                                       \
     uthash_bzero(_he_new_buckets,                                                \
-        2UL * (tbl)->num_buckets * sizeof(struct UT_hash_bucket));               \
+        sizeof(struct UT_hash_bucket) * (tbl)->num_buckets * 2U);                \
     (tbl)->ideal_chain_maxlen =                                                  \
        ((tbl)->num_items >> ((tbl)->log2_num_buckets+1U)) +                      \
        ((((tbl)->num_items & (((tbl)->num_buckets*2U)-1U)) != 0U) ? 1U : 0U);    \
@@ -1142,7 +1130,7 @@ typedef struct UT_hash_handle {
    void *next;                       /* next element in app order      */
    struct UT_hash_handle *hh_prev;   /* previous hh in bucket order    */
    struct UT_hash_handle *hh_next;   /* next hh in bucket order        */
-   void *key;                        /* ptr to enclosing struct's key  */
+   const void *key;                  /* ptr to enclosing struct's key  */
    unsigned keylen;                  /* enclosing struct's key len     */
    unsigned hashv;                   /* result of hash-fcn(key)        */
 } UT_hash_handle;
diff --git a/deps/uthash/utlist.h b/deps/uthash/utlist.h
index 5bb1ac9..492908c 100644
--- a/deps/uthash/utlist.h
+++ b/deps/uthash/utlist.h
@@ -1,5 +1,5 @@
 /*
-Copyright (c) 2007-2018, Troy D. Hanson   http://troydhanson.github.com/uthash/
+Copyright (c) 2007-2022, Troy D. Hanson  https://troydhanson.github.io/uthash/
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
@@ -24,7 +24,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef UTLIST_H
 #define UTLIST_H
 
-#define UTLIST_VERSION 2.1.0
+#define UTLIST_VERSION 2.3.0
 
 #include <assert.h>
 
diff --git a/deps/uthash/utringbuffer.h b/deps/uthash/utringbuffer.h
index ce2890e..6034117 100644
--- a/deps/uthash/utringbuffer.h
+++ b/deps/uthash/utringbuffer.h
@@ -1,5 +1,5 @@
 /*
-Copyright (c) 2015-2018, Troy D. Hanson   http://troydhanson.github.com/uthash/
+Copyright (c) 2015-2022, Troy D. Hanson  https://troydhanson.github.io/uthash/
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
@@ -26,7 +26,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef UTRINGBUFFER_H
 #define UTRINGBUFFER_H
 
-#define UTRINGBUFFER_VERSION 2.1.0
+#define UTRINGBUFFER_VERSION 2.3.0
 
 #include <stdlib.h>
 #include <string.h>
diff --git a/deps/uthash/utstack.h b/deps/uthash/utstack.h
index 3b0c1a0..94b8c51 100644
--- a/deps/uthash/utstack.h
+++ b/deps/uthash/utstack.h
@@ -1,5 +1,5 @@
 /*
-Copyright (c) 2018-2018, Troy D. Hanson   http://troydhanson.github.com/uthash/
+Copyright (c) 2018-2022, Troy D. Hanson  https://troydhanson.github.io/uthash/
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
@@ -24,7 +24,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef UTSTACK_H
 #define UTSTACK_H
 
-#define UTSTACK_VERSION 2.1.0
+#define UTSTACK_VERSION 2.3.0
 
 /*
  * This file contains macros to manipulate a singly-linked list as a stack.
@@ -35,9 +35,9 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  * struct item {
  *      int id;
  *      struct item *next;
- * }
+ * };
  *
- * struct item *stack = NULL:
+ * struct item *stack = NULL;
  *
  * int main() {
  *      int count;
diff --git a/deps/uthash/utstring.h b/deps/uthash/utstring.h
index 4cf5ffd..f0270fb 100644
--- a/deps/uthash/utstring.h
+++ b/deps/uthash/utstring.h
@@ -1,5 +1,5 @@
 /*
-Copyright (c) 2008-2018, Troy D. Hanson   http://troydhanson.github.com/uthash/
+Copyright (c) 2008-2022, Troy D. Hanson  https://troydhanson.github.io/uthash/
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
@@ -26,7 +26,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef UTSTRING_H
 #define UTSTRING_H
 
-#define UTSTRING_VERSION 2.1.0
+#define UTSTRING_VERSION 2.3.0
 
 #include <stdlib.h>
 #include <string.h>

From 8c85079603b664a98fb8c65e92ee1c90c780c614 Mon Sep 17 00:00:00 2001
From: luwenpeng <luwenpeng@geedgenetworks.com>
Date: Fri, 5 Aug 2022 10:45:28 +0800
Subject: [PATCH 14/17] Add CI autotest and Fix compile warning

---
 .gitlab-ci.yml                                | 253 ++++++++++++++++++
 CMakeLists.txt                                |  42 +--
 cmake/autorevision.sh => autorevision.sh      | 178 ++++++------
 ci/envelope_rpm.sh                            |  12 +
 ci/get-nprocessors.sh                         |  48 ++++
 ci/perpare_pulp3_netrc.sh                     |   3 +
 ci/travis.sh                                  |  66 +++++
 ci/upload_enveloped_rpm.sh                    |  21 ++
 cmake/FindSYSTEMD.cmake                       |  39 +++
 cmake/Package.cmake                           |  35 +++
 cmake/Version.cmake                           |  63 ++---
 conf/CMakeLists.txt                           |   1 +
 conf/stellar/stellar.conf                     |   0
 sdk/example/custom_event_plugin.cpp           |   4 +-
 sdk/example/http_event_plugin.cpp             |   2 +-
 src/packet_io/test/CMakeLists.txt             |   2 +-
 src/plugin_manager/plugin_manager.cpp         |   4 +-
 src/plugin_manager/plugin_manager_module.cpp  |   4 +-
 src/plugin_manager/test/CMakeLists.txt        |   2 +-
 .../test/gtest_plugin_manager.cpp             |  10 +-
 .../plugins_library/custom_event_plugin.cpp   |   2 +-
 src/protocol_decoder/http/http.cpp            |   4 +-
 test/CMakeLists.txt                           |   2 +-
 vendor/CMakeLists.txt                         |  31 ++-
 24 files changed, 654 insertions(+), 174 deletions(-)
 create mode 100644 .gitlab-ci.yml
 rename cmake/autorevision.sh => autorevision.sh (93%)
 create mode 100644 ci/envelope_rpm.sh
 create mode 100644 ci/get-nprocessors.sh
 create mode 100644 ci/perpare_pulp3_netrc.sh
 create mode 100644 ci/travis.sh
 create mode 100644 ci/upload_enveloped_rpm.sh
 create mode 100644 cmake/FindSYSTEMD.cmake
 create mode 100644 cmake/Package.cmake
 create mode 100644 conf/CMakeLists.txt
 create mode 100644 conf/stellar/stellar.conf

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 0000000..0e52438
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,253 @@
+variables:
+  GIT_STRATEGY: "clone"
+  BUILD_PADDING_PREFIX: /tmp/padding_for_CPACK_RPM_BUILD_SOURCE_DIRS_PREFIX_PREFIX_PREFIX_PREFIX_PREFIX_PREFIX/
+  INSTALL_PREFIX: "/opt/tsg/stellar"
+  TESTING_VERSION_BUILD: 0
+  BUILD_IMAGE_CENTOS7: "git.mesalab.cn:7443/mesa_platform/build-env:master"
+  BUILD_IMAGE_CENTOS8: "git.mesalab.cn:7443/mesa_platform/build-env:rockylinux"
+
+stages:
+  - build
+  - envelope
+  - upload
+
+.build_before_script:
+  before_script:
+    - mkdir -p $BUILD_PADDING_PREFIX/$CI_PROJECT_NAMESPACE/
+    - ln -s $CI_PROJECT_DIR $BUILD_PADDING_PREFIX/$CI_PROJECT_PATH
+    - cd $BUILD_PADDING_PREFIX/$CI_PROJECT_PATH
+    - chmod +x ./ci/travis.sh
+    - yum makecache
+    - yum install -y elfutils-libelf-devel
+
+.build_by_travis_for_centos7:
+  stage: build
+  image: $BUILD_IMAGE_CENTOS7
+  extends: .build_before_script
+  script:
+    - ./ci/travis.sh
+  tags:
+    - share
+
+.build_by_travis_for_centos8:
+  stage: build
+  image: $BUILD_IMAGE_CENTOS8
+  extends: .build_before_script
+  script:
+    - ./ci/travis.sh
+  tags:
+    - share
+
+###############################################################################
+# compile use image: build-env:master
+###############################################################################
+
+branch_build_debug_for_centos7:
+  extends: .build_by_travis_for_centos7
+  variables:
+    BUILD_TYPE: Debug
+  except:
+    - /^develop-.*$/i
+    - /^release-.*$/i
+    - tags
+
+branch_build_release_for_centos7:
+  variables:
+    BUILD_TYPE: RelWithDebInfo
+  extends: .build_by_travis_for_centos7
+  except:
+    - /^develop-.*$/i
+    - /^release-.*$/i
+    - tags
+
+develop_build_debug_for_centos7:
+  extends: .build_by_travis_for_centos7
+  variables:
+    TESTING_VERSION_BUILD: 1
+    UPLOAD_SYMBOL_FILES: 1
+    BUILD_TYPE: Debug
+    # ASAN_OPTION: ADDRESS
+    PACKAGE: 1
+    PULP3_REPO_NAME: stellar-testing-x86_64.el7
+    PULP3_DIST_NAME: stellar-testing-x86_64.el7
+  artifacts:
+    name: "stellar-develop-$CI_COMMIT_REF_NAME-debug"
+    paths:
+      - build/*.rpm
+  only:
+    - /^develop-.*$/i
+    - /^release-.*$/i
+
+develop_build_release_for_centos7:
+  extends: .build_by_travis_for_centos7
+  variables:
+    TESTING_VERSION_BUILD: 1
+    UPLOAD_SYMBOL_FILES: 1
+    # ASAN_OPTION: ADDRESS
+    BUILD_TYPE: RelWithDebInfo
+    PACKAGE: 1
+    PULP3_REPO_NAME: stellar-testing-x86_64.el7
+    PULP3_DIST_NAME: stellar-testing-x86_64.el7
+  artifacts:
+    name: "stellar-develop-$CI_COMMIT_REF_NAME-release"
+    paths:
+      - build/*.rpm
+  only:
+    - /^develop-.*$/i
+    - /^release-.*$/i
+
+release_build_debug_for_centos7:
+  variables:
+    UPLOAD_SYMBOL_FILES: 1
+    BUILD_TYPE: Debug
+    PACKAGE: 1
+    PULP3_REPO_NAME: stellar-stable-x86_64.el7
+    PULP3_DIST_NAME: stellar-stable-x86_64.el7
+  extends: .build_by_travis_for_centos7
+  artifacts:
+    name: "stellar-install-$CI_COMMIT_REF_NAME-debug"
+    paths:
+    - build/*.rpm
+  only:
+    - tags
+
+release_build_release_for_centos7:
+  variables:
+    BUILD_TYPE: RelWithDebInfo
+    UPLOAD_SYMBOL_FILES: 1
+    PACKAGE: 1
+    PULP3_REPO_NAME: stellar-stable-x86_64.el7
+    PULP3_DIST_NAME: stellar-stable-x86_64.el7
+  extends: .build_by_travis_for_centos7
+  artifacts:
+    name: "stellar-install-$CI_COMMIT_REF_NAME-release"
+    paths:
+      - build/*.rpm
+  only:
+    - tags
+
+###############################################################################
+# compile use image: build-env:rockylinux
+###############################################################################
+
+branch_build_debug_for_centos8:
+  extends: .build_by_travis_for_centos8
+  variables:
+    BUILD_TYPE: Debug
+  except:
+    - /^develop-.*$/i
+    - /^release-.*$/i
+    - tags
+
+branch_build_release_for_centos8:
+  variables:
+    BUILD_TYPE: RelWithDebInfo
+  extends: .build_by_travis_for_centos8
+  except:
+    - /^develop-.*$/i
+    - /^release-.*$/i
+    - tags
+
+develop_build_debug_for_centos8:
+  extends: .build_by_travis_for_centos8
+  variables:
+    TESTING_VERSION_BUILD: 1
+    UPLOAD_SYMBOL_FILES: 1
+    BUILD_TYPE: Debug
+    # ASAN_OPTION: ADDRESS
+    PACKAGE: 1
+    PULP3_REPO_NAME: stellar-testing-x86_64.el8
+    PULP3_DIST_NAME: stellar-testing-x86_64.el8
+  artifacts:
+    name: "stellar-develop-$CI_COMMIT_REF_NAME-debug"
+    paths:
+      - build/*.rpm
+  only:
+    - /^develop-.*$/i
+    - /^release-.*$/i
+
+develop_build_release_for_centos8:
+  extends: .build_by_travis_for_centos8
+  variables:
+    TESTING_VERSION_BUILD: 1
+    UPLOAD_SYMBOL_FILES: 1
+    # ASAN_OPTION: ADDRESS
+    BUILD_TYPE: RelWithDebInfo
+    PACKAGE: 1
+    PULP3_REPO_NAME: stellar-testing-x86_64.el8
+    PULP3_DIST_NAME: stellar-testing-x86_64.el8
+  artifacts:
+    name: "stellar-develop-$CI_COMMIT_REF_NAME-release"
+    paths:
+      - build/*.rpm
+  only:
+    - /^develop-.*$/i
+    - /^release-.*$/i
+
+release_build_debug_for_centos8:
+  variables:
+    UPLOAD_SYMBOL_FILES: 1
+    BUILD_TYPE: Debug
+    PACKAGE: 1
+    PULP3_REPO_NAME: stellar-stable-x86_64.el8
+    PULP3_DIST_NAME: stellar-stable-x86_64.el8
+  extends: .build_by_travis_for_centos8
+  artifacts:
+    name: "stellar-install-$CI_COMMIT_REF_NAME-debug"
+    paths:
+      - build/*.rpm
+  only:
+    - tags
+
+release_build_release_for_centos8:
+  variables:
+    BUILD_TYPE: RelWithDebInfo
+    UPLOAD_SYMBOL_FILES: 1
+    PACKAGE: 1
+    PULP3_REPO_NAME: stellar-stable-x86_64.el8
+    PULP3_DIST_NAME: stellar-stable-x86_64.el8
+  extends: .build_by_travis_for_centos8
+  artifacts:
+    name: "stellar-install-$CI_COMMIT_REF_NAME-release"
+    paths:
+      - build/*.rpm
+  only:
+    - tags
+
+###############################################################################
+# envelope and upload
+###############################################################################
+
+envelope_rpm:
+  stage: envelope
+  image: $BUILD_IMAGE_CENTOS7
+  variables:
+    FEATURE_ID: 100
+    APP_NAME_IN_RPM_SPEC: stellar
+  script:
+    - chmod +x ./ci/envelope_rpm.sh
+    - ./ci/envelope_rpm.sh
+  artifacts:
+    name: "stellar-pr-$CI_COMMIT_REF_NAME-release"
+    paths:
+      - build/*-pr-*.rpm
+  tags:
+    - envelope
+  only:
+    - tags
+ 
+upload_enveloped_rpm:
+  stage: upload
+  image: $BUILD_IMAGE_CENTOS7
+  variables:
+    PULP3_REPO_NAME_EL7: stellar-stable-x86_64.el7
+    PULP3_DIST_NAME_EL7: stellar-stable-x86_64.el7
+    PULP3_REPO_NAME_EL8: stellar-stable-x86_64.el8
+    PULP3_DIST_NAME_EL8: stellar-stable-x86_64.el8
+  script:
+    - chmod +x ./ci/upload_enveloped_rpm.sh
+    - ./ci/upload_enveloped_rpm.sh
+  tags:
+    - share
+  only:
+    - tags
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
index d1f406e..9bb7320 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,21 +1,35 @@
-cmake_minimum_required(VERSION 3.14)
+cmake_minimum_required(VERSION 3.12)
 project(stellar)
 
-# GoogleTest requires at least C++11
-set(CMAKE_CXX_STANDARD 11)
-
-#find required package
 set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
 include(Version)
-find_package(PkgConfig REQUIRED)
-find_package(Threads REQUIRED)
-find_package(PCAP REQUIRED)
-pkg_check_modules(SYSTEMD REQUIRED systemd)
+include(Package)
 
+add_definitions(-D_GNU_SOURCE)
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_C_STANDARD 11)
+
+if(NOT CMAKE_BUILD_TYPE)
+	set(CMAKE_BUILD_TYPE RelWithDebInfo)
+endif()
+
+if (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+	set (CMAKE_INSTALL_PREFIX "/opt/tsg/stellar" CACHE PATH "default install path" FORCE)
+endif()
+
+option(ENABLE_PIC "Generate position independent code (necessary for shared libraries)" TRUE)
+option(ENABLE_WARNING_ALL "Enable all optional warnings which are desirable for normal code" TRUE)
+
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
+set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -lelf")
+
+add_custom_target("install-program" COMMAND ${CMAKE_COMMAND} ARGS -DCOMPONENT=Program -P cmake_install.cmake)
+add_custom_target("install-profile" COMMAND ${CMAKE_COMMAND} ARGS -DCOMPONENT=Profile -P cmake_install.cmake)
 
 include_directories(${CMAKE_SOURCE_DIR}/sdk/include)
 
-#add vendor and source directory
+add_subdirectory(conf)
 add_subdirectory(vendor)
 add_subdirectory(deps/toml)
 add_subdirectory(deps/sds)
@@ -23,11 +37,5 @@ add_subdirectory(deps/timeout)
 add_subdirectory(src)
 add_subdirectory(sdk/example)
 
-
-#add gtest
 enable_testing()
-add_subdirectory(test)
-
-
-
-
+add_subdirectory(test)
\ No newline at end of file
diff --git a/cmake/autorevision.sh b/autorevision.sh
similarity index 93%
rename from cmake/autorevision.sh
rename to autorevision.sh
index 3baa179..80d0712 100644
--- a/cmake/autorevision.sh
+++ b/autorevision.sh
@@ -9,7 +9,7 @@
 
 # Usage message.
 arUsage() {
-	cat > "/dev/stderr" << EOF
+	cat >"/dev/stderr" <<EOF
 usage: autorevision {-t output-type | -s symbol} [-o cache-file [-f] ] [-V]
 	Options include:
 	-t output-type		= specify output type
@@ -69,28 +69,28 @@ ARVERSION="&&ARVERSION&&"
 TARGETFILE="/dev/stdout"
 while getopts ":t:o:s:VfU" OPTION; do
 	case "${OPTION}" in
-		t)
-			AFILETYPE="${OPTARG}"
+	t)
+		AFILETYPE="${OPTARG}"
 		;;
-		o)
-			CACHEFILE="${OPTARG}"
+	o)
+		CACHEFILE="${OPTARG}"
 		;;
-		f)
-			CACHEFORCE="1"
+	f)
+		CACHEFORCE="1"
 		;;
-		s)
-			VAROUT="${OPTARG}"
+	s)
+		VAROUT="${OPTARG}"
 		;;
-		U)
-			UNTRACKEDFILES="1"
+	U)
+		UNTRACKEDFILES="1"
 		;;
-		V)
-			echo "autorevision ${ARVERSION}"
-			exit 0
+	V)
+		echo "autorevision ${ARVERSION}"
+		exit 0
 		;;
-		?)
-			# If an unknown flag is used (or -?):
-			arUsage
+	?)
+		# If an unknown flag is used (or -?):
+		arUsage
 		;;
 	esac
 done
@@ -305,7 +305,7 @@ svnRepo() {
 	VCS_TYPE="svn"
 
 	case "${PWD}" in
-	/*trunk*|/*branches*|/*tags*)
+	/*trunk* | /*branches* | /*tags*)
 		local fn="${PWD}"
 		while [ "$(basename "${fn}")" != 'trunk' ] && [ "$(basename "${fn}")" != 'branches' ] && [ "$(basename "${fn}")" != 'tags' ] && [ "$(basename "${fn}")" != '/' ]; do
 			local fn="$(dirname "${fn}")"
@@ -328,20 +328,20 @@ svnRepo() {
 	# Is the working copy clean?
 	echo "${SVNVERSION}" | grep -q "M"
 	case "${?}" in
-		0)
-			VCS_WC_MODIFIED="1"
+	0)
+		VCS_WC_MODIFIED="1"
 		;;
-		1)
-			if [ ! -z "${UNTRACKEDFILES}" ]; then
+	1)
+		if [ ! -z "${UNTRACKEDFILES}" ]; then
 			# `svnversion` does not detect untracked files and `svn status` is really slow, so only run it if we really have to.
-				if [ -z "$(svn status)" ]; then
-					VCS_WC_MODIFIED="0"
-				else
-					VCS_WC_MODIFIED="1"
-				fi
-			else
+			if [ -z "$(svn status)" ]; then
 				VCS_WC_MODIFIED="0"
+			else
+				VCS_WC_MODIFIED="1"
 			fi
+		else
+			VCS_WC_MODIFIED="0"
+		fi
 		;;
 	esac
 
@@ -356,11 +356,10 @@ svnRepo() {
 
 	# Current branch
 	case "${PWD}" in
-	/*trunk*|/*branches*|/*tags*)
+	/*trunk* | /*branches* | /*tags*)
 		local lastbase=""
 		local fn="${PWD}"
-		while :
-		do
+		while :; do
 			base="$(basename "${fn}")"
 			if [ "${base}" = 'trunk' ]; then
 				VCS_BRANCH='trunk'
@@ -394,11 +393,10 @@ svnRepo() {
 	cd "${oldPath}"
 }
 
-
 # Functions to output data in different formats.
 # For bash output
 shOutput() {
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 # ${GENERATED_HEADER}
 
 VCS_TYPE="${VCS_TYPE}"
@@ -423,7 +421,7 @@ EOF
 
 # For source C output
 cOutput() {
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 /* ${GENERATED_HEADER} */
 
 const char *VCS_TYPE         = "${VCS_TYPE}";
@@ -448,7 +446,7 @@ EOF
 
 # For header output
 hOutput() {
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 /* ${GENERATED_HEADER} */
 #ifndef AUTOREVISION_H
 #define AUTOREVISION_H
@@ -477,7 +475,7 @@ EOF
 
 # A header output for use with xcode to populate info.plist strings
 xcodeOutput() {
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 /* ${GENERATED_HEADER} */
 #ifndef AUTOREVISION_H
 #define AUTOREVISION_H
@@ -507,8 +505,8 @@ EOF
 # For Swift output
 swiftOutput() {
 	case "${VCS_WC_MODIFIED}" in
-		0) VCS_WC_MODIFIED="false" ;;
-		1) VCS_WC_MODIFIED="true" ;;
+	0) VCS_WC_MODIFIED="false" ;;
+	1) VCS_WC_MODIFIED="true" ;;
 	esac
 	# For values that may not exist depending on the type of repo we
 	# have read from, set them to `nil` when they are empty.
@@ -533,7 +531,7 @@ swiftOutput() {
 	else
 		VCS_ACTION_STAMP="\"${VCS_ACTION_STAMP}\""
 	fi
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 /* ${GENERATED_HEADER} */
 
 let VCS_TYPE			= "${VCS_TYPE}"
@@ -559,10 +557,10 @@ EOF
 # For Python output
 pyOutput() {
 	case "${VCS_WC_MODIFIED}" in
-		0) VCS_WC_MODIFIED="False" ;;
-		1) VCS_WC_MODIFIED="True" ;;
+	0) VCS_WC_MODIFIED="False" ;;
+	1) VCS_WC_MODIFIED="True" ;;
 	esac
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 # ${GENERATED_HEADER}
 
 VCS_TYPE = "${VCS_TYPE}"
@@ -587,7 +585,7 @@ EOF
 
 # For Perl output
 plOutput() {
-	cat << EOF
+	cat <<EOF
 # ${GENERATED_HEADER}
 
 \$VCS_TYPE = '${VCS_TYPE}';
@@ -614,10 +612,10 @@ EOF
 # For lua output
 luaOutput() {
 	case "${VCS_WC_MODIFIED}" in
-		0) VCS_WC_MODIFIED="false" ;;
-		1) VCS_WC_MODIFIED="true" ;;
+	0) VCS_WC_MODIFIED="false" ;;
+	1) VCS_WC_MODIFIED="true" ;;
 	esac
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 -- ${GENERATED_HEADER}
 
 VCS_TYPE = "${VCS_TYPE}"
@@ -643,10 +641,10 @@ EOF
 # For php output
 phpOutput() {
 	case "${VCS_WC_MODIFIED}" in
-		0) VCS_WC_MODIFIED="false" ;;
-		1) VCS_WC_MODIFIED="true" ;;
+	0) VCS_WC_MODIFIED="false" ;;
+	1) VCS_WC_MODIFIED="true" ;;
 	esac
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 <?php
 # ${GENERATED_HEADER}
 
@@ -674,10 +672,10 @@ EOF
 # For ini output
 iniOutput() {
 	case "${VCS_WC_MODIFIED}" in
-		0) VCS_WC_MODIFIED="false" ;;
-		1) VCS_WC_MODIFIED="true" ;;
+	0) VCS_WC_MODIFIED="false" ;;
+	1) VCS_WC_MODIFIED="true" ;;
 	esac
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 ; ${GENERATED_HEADER}
 [VCS]
 VCS_TYPE = "${VCS_TYPE}"
@@ -700,10 +698,10 @@ EOF
 # For javascript output
 jsOutput() {
 	case "${VCS_WC_MODIFIED}" in
-		1) VCS_WC_MODIFIED="true" ;;
-		0) VCS_WC_MODIFIED="false" ;;
+	1) VCS_WC_MODIFIED="true" ;;
+	0) VCS_WC_MODIFIED="false" ;;
 	esac
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 /** ${GENERATED_HEADER} */
 
 var autorevision = {
@@ -736,10 +734,10 @@ EOF
 # For JSON output
 jsonOutput() {
 	case "${VCS_WC_MODIFIED}" in
-		1) VCS_WC_MODIFIED="true" ;;
-		0) VCS_WC_MODIFIED="false" ;;
+	1) VCS_WC_MODIFIED="true" ;;
+	0) VCS_WC_MODIFIED="false" ;;
 	esac
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 {
 	"_comment": "${GENERATED_HEADER}",
 	"VCS_TYPE": "${VCS_TYPE}",
@@ -764,10 +762,10 @@ EOF
 # For Java output
 javaOutput() {
 	case "${VCS_WC_MODIFIED}" in
-		1) VCS_WC_MODIFIED="true" ;;
-		0) VCS_WC_MODIFIED="false" ;;
+	1) VCS_WC_MODIFIED="true" ;;
+	0) VCS_WC_MODIFIED="false" ;;
 	esac
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 /* ${GENERATED_HEADER} */
 
 public class autorevision {
@@ -793,10 +791,10 @@ EOF
 # For Java properties output
 javapropOutput() {
 	case "${VCS_WC_MODIFIED}" in
-		1) VCS_WC_MODIFIED="true" ;;
-		0) VCS_WC_MODIFIED="false" ;;
+	1) VCS_WC_MODIFIED="true" ;;
+	0) VCS_WC_MODIFIED="false" ;;
 	esac
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 # ${GENERATED_HEADER}
 
 VCS_TYPE=${VCS_TYPE}
@@ -819,7 +817,7 @@ EOF
 
 # For m4 output
 m4Output() {
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 dnl ${GENERATED_HEADER}
 define(\`VCS_TYPE', \`${VCS_TYPE}')dnl
 define(\`VCS_BASENAME', \`${VCS_BASENAME}')dnl
@@ -840,10 +838,10 @@ EOF
 # For (La)TeX output
 texOutput() {
 	case "${VCS_WC_MODIFIED}" in
-		0) VCS_WC_MODIFIED="false" ;;
-		1) VCS_WC_MODIFIED="true" ;;
+	0) VCS_WC_MODIFIED="false" ;;
+	1) VCS_WC_MODIFIED="true" ;;
 	esac
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 % ${GENERATED_HEADER}
 \def \vcsType {${VCS_TYPE}}
 \def \vcsBasename {${VCS_BASENAME}}
@@ -865,10 +863,10 @@ EOF
 # For scheme output
 schemeOutput() {
 	case "${VCS_WC_MODIFIED}" in
-		0) VCS_WC_MODIFIED="#f" ;;
-		1) VCS_WC_MODIFIED="#t" ;;
+	0) VCS_WC_MODIFIED="#f" ;;
+	1) VCS_WC_MODIFIED="#t" ;;
 	esac
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 ;; ${GENERATED_HEADER}
 (define VCS_TYPE        "${VCS_TYPE}")
 (define VCS_BASENAME    "${VCS_BASENAME}")
@@ -892,10 +890,10 @@ EOF
 # For clojure output
 clojureOutput() {
 	case "${VCS_WC_MODIFIED}" in
-		0) VCS_WC_MODIFIED="false" ;;
-		1) VCS_WC_MODIFIED="true" ;;
+	0) VCS_WC_MODIFIED="false" ;;
+	1) VCS_WC_MODIFIED="true" ;;
 	esac
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 ;; ${GENERATED_HEADER}
 (def VCS_TYPE        "${VCS_TYPE}")
 (def VCS_BASENAME    "${VCS_BASENAME}")
@@ -918,7 +916,7 @@ EOF
 
 # For rpm spec file output
 rpmOutput() {
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 # ${GENERATED_HEADER}
 $([ "${VCS_TYPE}" ] && echo "%define vcs_type		${VCS_TYPE}")
 $([ "${VCS_BASENAME}" ] && echo "%define vcs_basename		${VCS_BASENAME}")
@@ -942,7 +940,7 @@ EOF
 # shellcheck disable=SC2155,SC2039
 hppOutput() {
 	local NAMESPACE="$(echo "${VCS_BASENAME}" | sed -e 's:_::g' | tr '[:lower:]' '[:upper:]')"
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 /* ${GENERATED_HEADER} */
 
 #ifndef ${NAMESPACE}_AUTOREVISION_H
@@ -977,10 +975,10 @@ EOF
 
 matlabOutput() {
 	case "${VCS_WC_MODIFIED}" in
-		0) VCS_WC_MODIFIED="FALSE" ;;
-		1) VCS_WC_MODIFIED="TRUE" ;;
+	0) VCS_WC_MODIFIED="FALSE" ;;
+	1) VCS_WC_MODIFIED="TRUE" ;;
 	esac
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 % ${GENERATED_HEADER}
 
 VCS_TYPE = '${VCS_TYPE}';
@@ -1004,7 +1002,7 @@ EOF
 }
 
 octaveOutput() {
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 % ${GENERATED_HEADER}
 
 VCS_TYPE = '${VCS_TYPE}';
@@ -1028,7 +1026,7 @@ EOF
 }
 
 cmakeOutput() {
-	cat > "${TARGETFILE}" << EOF
+	cat >"${TARGETFILE}" <<EOF
 # ${GENERATED_HEADER}
 
 set(VCS_TYPE ${VCS_TYPE})
@@ -1051,7 +1049,6 @@ set(VCS_WC_MODIFIED ${VCS_WC_MODIFIED})
 EOF
 }
 
-
 # Helper functions
 # Count path segments
 # shellcheck disable=SC2039
@@ -1063,7 +1060,7 @@ pathSegment() {
 		# Continue until we are at / or there are no path separators left.
 		while [ ! "${pathz}" = "/" ] && [ ! "${pathz}" = "$(echo "${pathz}" | sed -e 's:/::')" ]; do
 			pathz="$(dirname "${pathz}")"
-			depth="$((depth+1))"
+			depth="$((depth + 1))"
 		done
 	fi
 	echo "${depth}"
@@ -1090,21 +1087,21 @@ repoTest() {
 	if [ ! -z "$(git rev-parse HEAD 2>/dev/null)" ]; then
 		local gitPath="$(git rev-parse --show-toplevel)"
 		local gitDepth="$(pathSegment "${gitPath}")"
-		REPONUM="$((REPONUM+1))"
+		REPONUM="$((REPONUM + 1))"
 	else
 		local gitDepth="0"
 	fi
 	if [ ! -z "$(hg root 2>/dev/null)" ]; then
 		local hgPath="$(hg root 2>/dev/null)"
 		local hgDepth="$(pathSegment "${hgPath}")"
-		REPONUM="$((REPONUM+1))"
+		REPONUM="$((REPONUM + 1))"
 	else
 		local hgDepth="0"
 	fi
 	if [ ! -z "$(bzr root 2>/dev/null)" ]; then
 		local bzrPath="$(bzr root 2>/dev/null)"
 		local bzrDepth="$(pathSegment "${bzrPath}")"
-		REPONUM="$((REPONUM+1))"
+		REPONUM="$((REPONUM + 1))"
 	else
 		local bzrDepth="0"
 	fi
@@ -1114,12 +1111,12 @@ repoTest() {
 		local svnPath="$(svn info --xml | sed -n -e "s:${stringz}::" -e "s:${stringx}::p")"
 		# An old enough svn will not be able give us a path; default
 		# to 1 for that case.
-		if [ -z  "${svnPath}" ]; then
+		if [ -z "${svnPath}" ]; then
 			local svnDepth="1"
 		else
 			local svnDepth="$(pathSegment "${svnPath}")"
 		fi
-		REPONUM="$((REPONUM+1))"
+		REPONUM="$((REPONUM + 1))"
 	else
 		local svnDepth="0"
 	fi
@@ -1142,8 +1139,6 @@ repoTest() {
 	fi
 }
 
-
-
 # Detect which repos we are in and gather data.
 # shellcheck source=/dev/null
 if [ -f "${CACHEFILE}" ] && [ "${CACHEFORCE}" = "1" ]; then
@@ -1165,7 +1160,6 @@ else
 	fi
 fi
 
-
 # -s output is handled here.
 if [ ! -z "${VAROUT}" ]; then
 	if [ "${VAROUT}" = "VCS_TYPE" ]; then
@@ -1196,7 +1190,6 @@ if [ ! -z "${VAROUT}" ]; then
 	fi
 fi
 
-
 # Detect requested output type and use it.
 if [ ! -z "${AFILETYPE}" ]; then
 	if [ "${AFILETYPE}" = "c" ]; then
@@ -1251,7 +1244,6 @@ if [ ! -z "${AFILETYPE}" ]; then
 	fi
 fi
 
-
 # If requested, make a cache file.
 if [ ! -z "${CACHEFILE}" ] && [ ! "${CACHEFORCE}" = "1" ]; then
 	TARGETFILE="${CACHEFILE}.tmp"
diff --git a/ci/envelope_rpm.sh b/ci/envelope_rpm.sh
new file mode 100644
index 0000000..4aa2978
--- /dev/null
+++ b/ci/envelope_rpm.sh
@@ -0,0 +1,12 @@
+#!/usr/bin/env sh
+
+ls $CI_PROJECT_DIR/build/*.rpm
+
+BIN_TO_PROTECT_IN_RPM="${INSTALL_PREFIX}/bin/stellar"
+RPMS_FULL_PATH=$(ls $CI_PROJECT_DIR/build/*.rpm | grep -v debug | grep -v devel)
+echo "RPMS_TO_BE_ENVELOPE: " $RPMS_FULL_PATH
+
+for RPM in ${RPMS_FULL_PATH[@]}; do
+  echo "ENVELOPE: " $RPM
+  /root/rebuildrpm_and_envelope.sh $RPM $BIN_TO_PROTECT_IN_RPM $FEATURE_ID $APP_NAME_IN_RPM_SPEC
+done
diff --git a/ci/get-nprocessors.sh b/ci/get-nprocessors.sh
new file mode 100644
index 0000000..8a754cf
--- /dev/null
+++ b/ci/get-nprocessors.sh
@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+# Copyright 2017 Google Inc.
+# All Rights Reserved.
+#
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# This file is typically sourced by another script.
+# if possible, ask for the precise number of processors,
+# otherwise take 2 processors as reasonable default; see
+# https://docs.travis-ci.com/user/speeding-up-the-build/#Makefile-optimization
+if [ -x /usr/bin/getconf ]; then
+    NPROCESSORS=$(/usr/bin/getconf _NPROCESSORS_ONLN)
+else
+    NPROCESSORS=2
+fi
+
+# as of 2017-09-04 Travis CI reports 32 processors, but GCC build
+# crashes if parallelized too much (maybe memory consumption problem),
+# so limit to 4 processors for the time being.
+if [ $NPROCESSORS -gt 4 ]; then
+    echo "$0:Note: Limiting processors to use by make from $NPROCESSORS to 4."
+    NPROCESSORS=4
+fi
diff --git a/ci/perpare_pulp3_netrc.sh b/ci/perpare_pulp3_netrc.sh
new file mode 100644
index 0000000..0aca8ec
--- /dev/null
+++ b/ci/perpare_pulp3_netrc.sh
@@ -0,0 +1,3 @@
+#!/usr/bin/env sh
+set -evx
+echo "machine ${PULP3_SERVER_URL}\nlogin ${PULP3_SERVER_LOGIN}\npassword ${PULP3_SERVER_PASSWORD}\n" >~/.netrc
diff --git a/ci/travis.sh b/ci/travis.sh
new file mode 100644
index 0000000..6f30ffd
--- /dev/null
+++ b/ci/travis.sh
@@ -0,0 +1,66 @@
+#!/usr/bin/env sh
+set -evx
+
+chmod +x ci/get-nprocessors.sh
+. ci/get-nprocessors.sh
+
+# if possible, ask for the precise number of processors,
+# otherwise take 2 processors as reasonable default; see
+# https://docs.travis-ci.com/user/speeding-up-the-build/#Makefile-optimization
+if [ -x /usr/bin/getconf ]; then
+  NPROCESSORS=$(/usr/bin/getconf _NPROCESSORS_ONLN)
+else
+  NPROCESSORS=2
+fi
+
+# as of 2017-09-04 Travis CI reports 32 processors, but GCC build
+# crashes if parallelized too much (maybe memory consumption problem),
+# so limit to 4 processors for the time being.
+if [ $NPROCESSORS -gt 4 ]; then
+  echo "$0:Note: Limiting processors to use by make from $NPROCESSORS to 4."
+  NPROCESSORS=4
+fi
+
+# Tell make to use the processors. No preceding '-' required.
+MAKEFLAGS="j${NPROCESSORS}"
+export MAKEFLAGS
+
+env | sort
+
+# Set default values to OFF for these variables if not specified.
+: "${NO_EXCEPTION:=OFF}"
+: "${NO_RTTI:=OFF}"
+: "${COMPILER_IS_GNUCXX:=OFF}"
+
+# Install dependency from YUM
+yum install -y libpcap-devel
+
+if [ $ASAN_OPTION ]; then
+  source /opt/rh/devtoolset-7/enable
+fi
+
+mkdir build || true
+cd build
+
+cmake3 -DCMAKE_CXX_FLAGS=$CXX_FLAGS \
+  -DCMAKE_BUILD_TYPE=$BUILD_TYPE \
+  -DASAN_OPTION=$ASAN_OPTION \
+  -DCMAKE_INSTALL_PREFIX=$INSTALL_PREFIX \
+  -DTFE_VERSION_DAILY_BUILD=$TESTING_VERSION_BUILD \
+  ..
+
+make
+make test
+
+if [ -n "${PACKAGE}" ]; then
+  make package
+  cp ~/rpm_upload_tools.py ./
+  python3 rpm_upload_tools.py ${PULP3_REPO_NAME} ${PULP3_DIST_NAME} *.rpm
+fi
+
+if [ -n "${UPLOAD_SYMBOL_FILES}" ]; then
+  rpm -i stellar*debuginfo*.rpm
+  ls -ahl /usr/lib/debug/opt/tsg/stellar/bin/
+  cp /usr/lib/debug/opt/tsg/stellar/bin/stellar*debug /tmp/stellar.debuginfo.${CI_COMMIT_SHORT_SHA}
+  sentry-cli upload-dif -t elf /tmp/stellar.debuginfo.${CI_COMMIT_SHORT_SHA}
+fi
diff --git a/ci/upload_enveloped_rpm.sh b/ci/upload_enveloped_rpm.sh
new file mode 100644
index 0000000..0faae1a
--- /dev/null
+++ b/ci/upload_enveloped_rpm.sh
@@ -0,0 +1,21 @@
+#!/usr/bin/env sh
+
+cd $CI_PROJECT_DIR/build/
+cp ~/rpm_upload_tools.py ./
+
+ls -ahl *.rpm
+
+RPM_IS_EL7=$(ls -ahl *-pr-*.rpm | grep el7 | wc -l)
+RPM_IS_EL8=$(ls -ahl *-pr-*.rpm | grep el8 | wc -l)
+
+if [ $RPM_IS_EL7 -eq 1 ]; then
+  echo "====== Upload the packed RPM package for CentOS7 ======"
+  python3 rpm_upload_tools.py ${PULP3_REPO_NAME_EL7} ${PULP3_DIST_NAME_EL7} *-pr-*el7*.rpm
+fi
+
+if [ $RPM_IS_EL8 -eq 1 ]; then
+  echo "====== Upload the packed RPM package for CentOS8 ======"
+  python3 rpm_upload_tools.py ${PULP3_REPO_NAME_EL8} ${PULP3_DIST_NAME_EL8} *-pr-*el8*.rpm
+fi
+
+rm -rf *.rpm
diff --git a/cmake/FindSYSTEMD.cmake b/cmake/FindSYSTEMD.cmake
new file mode 100644
index 0000000..c7decde
--- /dev/null
+++ b/cmake/FindSYSTEMD.cmake
@@ -0,0 +1,39 @@
+# - Find SystemdDaemon
+# Find the systemd daemon library
+#
+# This module defines the following variables:
+#   SYSTEMD_FOUND  -  True if library and include directory are found
+# If set to TRUE, the following are also defined:
+#   SYSTEMD_INCLUDE_DIRS  -  The directory where to find the header file
+#   SYSTEMD_LIBRARIES  -  Where to find the library file
+#
+# For conveniance, these variables are also set. They have the same values
+# than the variables above.  The user can thus choose his/her prefered way
+# to write them.
+#   SYSTEMD_LIBRARY
+#   SYSTEMD_INCLUDE_DIR
+#
+# This file is in the public domain
+
+include(FindPkgConfig)
+pkg_check_modules(SYSTEMD libsystemd)
+
+if(NOT SYSTEMD_FOUND)
+  find_path(SYSTEMD_INCLUDE_DIRS NAMES systemd/sd-daemon.h
+    DOC "The Systemd include directory")
+
+  find_library(SYSTEMD_LIBRARIES NAMES systemd
+    DOC "The Systemd library")
+
+  # Use some standard module to handle the QUIETLY and REQUIRED arguments, and
+  # set SYSTEMD_FOUND to TRUE if these two variables are set.
+  include(FindPackageHandleStandardArgs)
+  find_package_handle_standard_args(SYSTEMD REQUIRED_VARS SYSTEMD_LIBRARIES SYSTEMD_INCLUDE_DIRS)
+
+  if(SYSTEMD_FOUND)
+    set(SYSTEMD_LIBRARY ${SYSTEMD_LIBRARIES})
+    set(SYSTEMD_INCLUDE_DIR ${SYSTEMD_INCLUDE_DIRS})
+  endif()
+endif()
+
+mark_as_advanced(SYSTEMD_INCLUDE_DIRS SYSTEMD_LIBRARIES)
\ No newline at end of file
diff --git a/cmake/Package.cmake b/cmake/Package.cmake
new file mode 100644
index 0000000..3091159
--- /dev/null
+++ b/cmake/Package.cmake
@@ -0,0 +1,35 @@
+if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+    set(CPACK_PACKAGE_NAME "stellar-debug")
+else()
+    set(CPACK_PACKAGE_NAME "stellar")
+endif()
+
+message(STATUS "Package: ${CPACK_PACKAGE_NAME}")
+
+set(CPACK_PACKAGE_VENDOR "TSG")
+set(CPACK_PACKAGE_VERSION_MAJOR "${STELLAR_VERSION_MAJOR}")
+set(CPACK_PACKAGE_VERSION_MINOR "${STELLAR_VERSION_MINOR}")
+set(CPACK_PACKAGE_VERSION_PATCH "${STELLAR_VERSION_PATCH}.${STELLAR_DESCRIBE}")
+set(CPACK_PACKAGING_INSTALL_PREFIX ${CMAKE_INSTALL_PREFIX})
+
+# RPM Build
+set(CPACK_GENERATOR "RPM")
+set(CPACK_RPM_AUTO_GENERATED_FILE_NAME ON)
+set(CPACK_RPM_FILE_NAME "RPM-DEFAULT")
+set(CPACK_RPM_PACKAGE_AUTOREQPROV "no")
+set(CPACK_RPM_PACKAGE_RELEASE_DIST on)
+set(CPACK_RPM_DEBUGINFO_PACKAGE on)
+set(CPACK_RPM_POST_INSTALL_SCRIPT_FILE ${CMAKE_SOURCE_DIR}/cmake/PostInstall.in)
+set(CPACK_RPM_POST_UNINSTALL_SCRIPT_FILE ${CMAKE_SOURCE_DIR}/cmake/PostUninstall.in)
+set(CPACK_RPM_PRE_UNINSTALL_SCRIPT_FILE ${CMAKE_SOURCE_DIR}/cmake/PreUninstall.in)
+
+# Must uninstall the debug package before install release package
+if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+    set(CPACK_RPM_PACKAGE_CONFLICTS "stellar")
+else()
+    set(CPACK_RPM_PACKAGE_CONFLICTS "stellar-debug")
+endif()
+
+# Setup %config(noreplace)
+set(CPACK_RPM_USER_FILELIST "%config(noreplace) ${CMAKE_INSTALL_PREFIX}/conf/stellar/stellar.conf")
+include(CPack)
diff --git a/cmake/Version.cmake b/cmake/Version.cmake
index f16eb71..4bd226e 100644
--- a/cmake/Version.cmake
+++ b/cmake/Version.cmake
@@ -1,58 +1,47 @@
-
 # Using autorevision.sh to generate version information
-
-set(__SOURCE_AUTORESIVISION ${CMAKE_SOURCE_DIR}/cmake/autorevision.sh)
+set(__SOURCE_AUTORESIVISION ${CMAKE_SOURCE_DIR}/autorevision.sh)
 set(__AUTORESIVISION ${CMAKE_BINARY_DIR}/autorevision.sh)
-set(__VERSION_CACHE ${CMAKE_BINARY_DIR}/version.txt)
+set(__VERSION_CACHE ${CMAKE_SOURCE_DIR}/version.txt)
 set(__VERSION_CONFIG ${CMAKE_BINARY_DIR}/version.cmake)
 
 file(COPY ${__SOURCE_AUTORESIVISION} DESTINATION ${CMAKE_BINARY_DIR}
 	FILE_PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE
 	WORLD_READ WORLD_EXECUTE)
 
-# execute autorevision.sh to generate version information
-execute_process(COMMAND ${__AUTORESIVISION} -t cmake -o ${__VERSION_CACHE} 
-				OUTPUT_FILE ${__VERSION_CONFIG} ERROR_QUIET)
+# Execute autorevision.sh to generate version information
+execute_process(COMMAND ${__AUTORESIVISION} -t cmake -o ${__VERSION_CACHE} OUTPUT_FILE ${__VERSION_CONFIG})
 include(${__VERSION_CONFIG})
 
-# extract major, minor, patch version from git tag
-string(REGEX REPLACE "^v([0-9]+)\\..*" "\\1" VERSION_MAJOR "${VCS_TAG}")
-string(REGEX REPLACE "^v[0-9]+\\.([0-9]+).*" "\\1" VERSION_MINOR "${VCS_TAG}")
-string(REGEX REPLACE "^v[0-9]+\\.[0-9]+\\.([0-9]+).*" "\\1" VERSION_PATCH "${VCS_TAG}")
+# Extract major, minor, patch version from git tag
+string(REGEX REPLACE "^v([0-9]+)\\..*" "\\1" STELLAR_VERSION_MAJOR "${VCS_TAG}")
+string(REGEX REPLACE "^v[0-9]+\\.([0-9]+).*" "\\1" STELLAR_VERSION_MINOR "${VCS_TAG}")
+string(REGEX REPLACE "^v[0-9]+\\.[0-9]+\\.([0-9]+).*" "\\1" STELLAR_VERSION_PATCH "${VCS_TAG}")
+string(REGEX REPLACE "[T\\:\\+\\-]" "" STELLAR_VERSION_DATE "${VCS_DATE}")
 
-string(REGEX REPLACE "[T\\:\\+\\-]" "" VERSION_DATE "${VCS_DATE}")
-
-if(VERSION_DAILY_BUILD)
-	set(VERSION_PATCH ${VERSION_PATCH}.${VERSION_DATE})
+if(STELLAR_VERSION_DAILY_BUILD)
+	set(STELLAR_VERSION_PATCH ${STELLAR_VERSION_PATCH}.${STELLAR_VERSION_DATE})
 endif()
 
-
-if(NOT VERSION_MAJOR)
-    set(VERSION_MAJOR 1)
+if(NOT STELLAR_VERSION_MAJOR)
+	set(STELLAR_VERSION_MAJOR 3)
 endif()
 
-if(NOT VERSION_MINOR)
-    set(VERSION_MINOR 0)
+if(NOT STELLAR_VERSION_MINOR)
+	set(STELLAR_VERSION_MINOR 0)
 endif()
 
-if(NOT VERSION_PATCH)
-    set(VERSION_PATCH 0)
+if(NOT STELLAR_VERSION_PATCH)
+	set(STELLAR_VERSION_PATCH 0)
 endif()
 
-set(VERSION "${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH}")
-set(VERSION_BUILD "${VCS_SHORT_HASH}")
+set(STELLAR_DESCRIBE "${VCS_SHORT_HASH}")
+set(STELLAR_VERSION "${STELLAR_VERSION_MAJOR}.${STELLAR_VERSION_MINOR}.${STELLAR_VERSION_PATCH}")
+set(STELLAR_GIT_VERSION "${STELLAR_VERSION_MAJOR}.${STELLAR_VERSION_MINOR}.${STELLAR_VERSION_PATCH}-${STELLAR_DESCRIBE}")
 
-# print information
-message(STATUS "Version: ${VERSION}-${VERSION_BUILD}")
+# Replace .- with _
+string(REGEX REPLACE "[\\.\\-]" "_" STELLAR_VAR_VERSION "${STELLAR_GIT_VERSION}")
 
-option(DEFINE_GIT_VERSION "Set DEFINE_GIT_VERSION to TRUE or FALSE" TRUE)
-
-if(DEFINE_GIT_VERSION)
-
-set(GIT_VERSION "${VERSION}-${CMAKE_BUILD_TYPE}-${VERSION_BUILD}-${VCS_BRANCH}-${VCS_DATE}")
-message(STATUS "GIT_VERSION: ${GIT_VERSION}")
-string(REGEX REPLACE "[-:+/\\.]" "_" GIT_VERSION ${GIT_VERSION})
-
-add_definitions(-DGIT_VERSION=\"${GIT_VERSION}\")
-
-endif()
+# Print information
+message(STATUS "Welcome to stateful network function development platform, Version: ${STELLAR_GIT_VERSION}")
+add_definitions(-DSTELLAR_GIT_VERSION=\"${STELLAR_GIT_VERSION}\")
+add_definitions(-DSTELLAR_VAR_VERSION=${STELLAR_VAR_VERSION})
\ No newline at end of file
diff --git a/conf/CMakeLists.txt b/conf/CMakeLists.txt
new file mode 100644
index 0000000..d118a46
--- /dev/null
+++ b/conf/CMakeLists.txt
@@ -0,0 +1 @@
+install(DIRECTORY stellar DESTINATION conf COMPONENT Profile)
\ No newline at end of file
diff --git a/conf/stellar/stellar.conf b/conf/stellar/stellar.conf
new file mode 100644
index 0000000..e69de29
diff --git a/sdk/example/custom_event_plugin.cpp b/sdk/example/custom_event_plugin.cpp
index a1d4d03..dc56c0d 100644
--- a/sdk/example/custom_event_plugin.cpp
+++ b/sdk/example/custom_event_plugin.cpp
@@ -84,7 +84,7 @@ extern "C" void custom_event_plugin_tcp_entry(const struct stellar_session *sess
 		if (*per_tcp_session_pme == NULL)
 		{
 			struct tcp_session_pme *cur_ctx = tcp_session_pme_create();
-			snprintf(cur_ctx->data, 6, "tcp******");
+			memcpy(cur_ctx->data, "custom_event_plugin_tcp_entry", strlen("custom_event_plugin_tcp_entry"));
 			*per_tcp_session_pme = *&cur_ctx;
 		}
 	}
@@ -115,7 +115,7 @@ extern "C" void custom_event_plugin_custom_entry(const struct stellar_session *s
 		if (*per_custom_session_pme == NULL)
 		{
 			struct custom_session_pme *cur_ctx = custom_session_pme_create();
-			snprintf(cur_ctx->data, 6, "custom******");
+			memcpy(cur_ctx->data, "custom_event_plugin_custom_entry", strlen("custom_event_plugin_custom_entry"));
 			*per_custom_session_pme = *&cur_ctx;
 		}
 	}
diff --git a/sdk/example/http_event_plugin.cpp b/sdk/example/http_event_plugin.cpp
index 0cf5364..4f795d3 100644
--- a/sdk/example/http_event_plugin.cpp
+++ b/sdk/example/http_event_plugin.cpp
@@ -50,7 +50,7 @@ extern "C" void http_event_plugin_entry(const struct stellar_session *session, e
 		if (*per_http_session_pme == NULL)
 		{
 			struct http_session_pme *cur_ctx = http_session_pme_create();
-			snprintf(cur_ctx->data, 6, "http******");
+			memcpy(cur_ctx->data, "http_event_plugin_entry", strlen("http_event_plugin_entry"));
 			*per_http_session_pme = *&cur_ctx;
 		}
 	}
diff --git a/src/packet_io/test/CMakeLists.txt b/src/packet_io/test/CMakeLists.txt
index 94aca33..3c1503e 100644
--- a/src/packet_io/test/CMakeLists.txt
+++ b/src/packet_io/test/CMakeLists.txt
@@ -4,7 +4,7 @@ add_executable(gtest_packet_io
 
 target_link_libraries(
   gtest_packet_io
-  gtest_main
+  gtest
   packet_io
 )
 
diff --git a/src/plugin_manager/plugin_manager.cpp b/src/plugin_manager/plugin_manager.cpp
index 6baaad6..95f63b4 100644
--- a/src/plugin_manager/plugin_manager.cpp
+++ b/src/plugin_manager/plugin_manager.cpp
@@ -217,7 +217,7 @@ static int plugin_manager_init_plugins(struct plugin_manager *plug_mgr)
 			return -1;
 		}
 		double percentage = ((double)(i + 1)) / ((double)plug_mgr->used_module_num) * ((double)100);
-		plugin_manager_log(INFO, "Plugin initialization progress: [%.2f%]", percentage);
+		plugin_manager_log(INFO, "Plugin initialization progress: [%.2f%%]", percentage);
 	}
 
 	return 0;
@@ -419,7 +419,7 @@ void plugin_manager_dispatch(struct plugin_manager *plug_mgr, struct stellar_eve
 			plug_ctx = plugin_manager_create_plugin_ctx(plug_mgr, session_name);
 			if (plug_ctx == NULL)
 			{
-				plugin_manager_log(ERROR, "can't create runtime plugin ctx for session '%s', Please check whether the callback is registered in the current session");
+				plugin_manager_log(ERROR, "can't create runtime plugin ctx for session '%s', Please check whether the callback is registered in the current session", session_name);
 				return;
 			}
 			stellar_event_set_plugin_ctx(event, plug_ctx);
diff --git a/src/plugin_manager/plugin_manager_module.cpp b/src/plugin_manager/plugin_manager_module.cpp
index def9343..2ff7179 100644
--- a/src/plugin_manager/plugin_manager_module.cpp
+++ b/src/plugin_manager/plugin_manager_module.cpp
@@ -139,7 +139,7 @@ int plugin_manager_module_init(struct plugin_manager_module *module)
         return -1;
     }
 
-    long elapsed = (end.tv_sec - start.tv_sec) * 1000000 + (end.tv_nsec - start.tv_nsec) / 1000;
+    long long elapsed = (end.tv_sec - start.tv_sec) * 1000000 + (end.tv_nsec - start.tv_nsec) / 1000;
     plugin_manager_log(INFO, "plugin dynamic library '%s' init success, using '%lld' us", module->lib_path, elapsed);
 
     return 0;
@@ -157,7 +157,7 @@ void plugin_manager_module_exit(struct plugin_manager_module *module)
         clock_gettime(CLOCK_MONOTONIC, &end);
         module->exit_cb_ptr = NULL;
 
-        long elapsed = (end.tv_sec - start.tv_sec) * 1000000 + (end.tv_nsec - start.tv_nsec) / 1000;
+        long long elapsed = (end.tv_sec - start.tv_sec) * 1000000 + (end.tv_nsec - start.tv_nsec) / 1000;
         plugin_manager_log(INFO, "plugin dynamic library '%s' exit success, using '%lld' us", module->lib_path, elapsed);
     }
 }
diff --git a/src/plugin_manager/test/CMakeLists.txt b/src/plugin_manager/test/CMakeLists.txt
index 82bc6d6..e3ce81a 100644
--- a/src/plugin_manager/test/CMakeLists.txt
+++ b/src/plugin_manager/test/CMakeLists.txt
@@ -4,7 +4,7 @@ add_executable(gtest_plugin_manager
 
 target_link_libraries(
   gtest_plugin_manager
-  gtest_main
+  gtest
   plugin_manager
   session_manager
   toml
diff --git a/src/plugin_manager/test/gtest_plugin_manager.cpp b/src/plugin_manager/test/gtest_plugin_manager.cpp
index efc95b2..dbe267f 100644
--- a/src/plugin_manager/test/gtest_plugin_manager.cpp
+++ b/src/plugin_manager/test/gtest_plugin_manager.cpp
@@ -184,7 +184,7 @@ TEST(PLUGIN_MANAGER_TEST, plugin_mangager_config_CUSTOM)
 
 	EXPECT_STREQ(config->session_section[2].session_name, "CUSTOM");
 	EXPECT_STREQ(config->session_section[2].cb_func_name, "custom_event_plugin_custom_entry");
-	EXPECT_TRUE(config->session_section[2].event == (0x01 << 1) | (0x01 << 3) | (0x01 << 5));
+	EXPECT_TRUE(config->session_section[2].event == (enum session_event_type)((0x01 << 1) | (0x01 << 3) | (0x01 << 5)));
 
 	plugin_mangager_config_dump(config);
 	plugin_mangager_config_destory(config);
@@ -377,28 +377,28 @@ TEST(PLUGIN_MANAGER_TEST, plugin_manager_dispatch_TCP)
 	plugin_manager_dispatch(plug_mgr, &event);
 	pme = (struct tcp_session_pme *)pm_session_get_plugin_pme(&session);
 	EXPECT_TRUE(pme->flags == SESSION_EVENT_OPENING);
-	EXPECT_STREQ(pme->data, "tcp***");
+	EXPECT_STREQ(pme->data, "custom_event_plugin_tcp_entry");
 
 	// run evencb
 	event_data.type = SESSION_EVENT_RAWPKT;
 	plugin_manager_dispatch(plug_mgr, &event);
 	pme = (struct tcp_session_pme *)pm_session_get_plugin_pme(&session);
 	EXPECT_TRUE(pme->flags == SESSION_EVENT_RAWPKT);
-	EXPECT_STREQ(pme->data, "tcp***");
+	EXPECT_STREQ(pme->data, "custom_event_plugin_tcp_entry");
 
 	// run evencb
 	event_data.type = SESSION_EVENT_ORDPKT;
 	plugin_manager_dispatch(plug_mgr, &event);
 	pme = (struct tcp_session_pme *)pm_session_get_plugin_pme(&session);
 	EXPECT_TRUE(pme->flags == SESSION_EVENT_ORDPKT);
-	EXPECT_STREQ(pme->data, "tcp***");
+	EXPECT_STREQ(pme->data, "custom_event_plugin_tcp_entry");
 
 	// run evencb
 	event_data.type = SESSION_EVENT_META;
 	plugin_manager_dispatch(plug_mgr, &event);
 	pme = (struct tcp_session_pme *)pm_session_get_plugin_pme(&session);
 	EXPECT_TRUE(pme->flags == SESSION_EVENT_META);
-	EXPECT_STREQ(pme->data, "tcp***");
+	EXPECT_STREQ(pme->data, "custom_event_plugin_tcp_entry");
 
 	// run evencb
 	event_data.type = SESSION_EVENT_CLOSING;
diff --git a/src/plugin_manager/test/test_plugins/plugins_library/custom_event_plugin.cpp b/src/plugin_manager/test/test_plugins/plugins_library/custom_event_plugin.cpp
index fbeed57..dc34f1e 100644
--- a/src/plugin_manager/test/test_plugins/plugins_library/custom_event_plugin.cpp
+++ b/src/plugin_manager/test/test_plugins/plugins_library/custom_event_plugin.cpp
@@ -112,7 +112,7 @@ extern "C" void custom_event_plugin_tcp_entry(const struct stellar_session *sess
 		if (*per_tcp_session_pme == NULL)
 		{
 			struct tcp_session_pme *cur_ctx = tcp_session_pme_create();
-			memcpy(cur_ctx->data, "tcp***", 6);
+			memcpy(cur_ctx->data, "custom_event_plugin_tcp_entry", strlen("custom_event_plugin_tcp_entry"));
 			cur_ctx->flags = SESSION_EVENT_OPENING;
 			*per_tcp_session_pme = *&cur_ctx;
 		}
diff --git a/src/protocol_decoder/http/http.cpp b/src/protocol_decoder/http/http.cpp
index b24fffd..c7e3e79 100644
--- a/src/protocol_decoder/http/http.cpp
+++ b/src/protocol_decoder/http/http.cpp
@@ -1,8 +1,10 @@
+#include <stddef.h>
+
 #include "sdk/include/session.h"
 
 void http_decoder(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
 {
-	struct stellar_session_event_extras *info;
+	struct stellar_session_event_extras *info = NULL;
 	struct stellar_session *new_session = session_manager_session_derive(s, "HTTP");
 
 	session_manager_trigger_event(new_session, SESSION_EVENT_OPENING, info);
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 7cdc600..56d7b60 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -7,7 +7,7 @@ add_executable(gtest_stellar
 
 target_link_libraries(
   gtest_stellar
-  gtest_main
+  gtest
 )
 
 include(GoogleTest)
diff --git a/vendor/CMakeLists.txt b/vendor/CMakeLists.txt
index 5653577..6799ed0 100644
--- a/vendor/CMakeLists.txt
+++ b/vendor/CMakeLists.txt
@@ -1,10 +1,21 @@
-include(FetchContent)
-FetchContent_Declare(
-  googletest
-  #URL https://github.com/google/googletest/archive/609281088cfefc76f9d0ce82e1ff6c30cc3591e5.zip
-  URL ${CMAKE_CURRENT_SOURCE_DIR}/googletest-release-1.8.0.tar.gz
-  URL_MD5 16877098823401d1bf2ed7891d7dce36
-)
-# For Windows: Prevent overriding the parent project's compiler/linker settings
-set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
-FetchContent_MakeAvailable(googletest)
\ No newline at end of file
+include(ExternalProject)
+
+# GoogleTest
+ExternalProject_Add(googletest PREFIX googletest
+        URL ${CMAKE_CURRENT_SOURCE_DIR}/googletest-release-1.8.0.tar.gz
+        URL_MD5 16877098823401d1bf2ed7891d7dce36
+        CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR> -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE})
+
+ExternalProject_Get_Property(googletest INSTALL_DIR)
+file(MAKE_DIRECTORY ${INSTALL_DIR}/include)
+
+add_library(gtest STATIC IMPORTED GLOBAL)
+add_dependencies(gtest googletest)
+set_property(TARGET gtest PROPERTY IMPORTED_LOCATION ${INSTALL_DIR}/lib/libgtest.a)
+set_property(TARGET gtest PROPERTY INTERFACE_INCLUDE_DIRECTORIES ${INSTALL_DIR}/include)
+set_property(TARGET gtest PROPERTY INTERFACE_LINK_LIBRARIES pthread)
+
+add_library(gmock STATIC IMPORTED GLOBAL)
+add_dependencies(gmock googletest)
+set_property(TARGET gmock PROPERTY IMPORTED_LOCATION ${INSTALL_DIR}/lib/libgmock.a)
+set_property(TARGET gmock PROPERTY INTERFACE_INCLUDE_DIRECTORIES ${INSTALL_DIR}/include)
\ No newline at end of file

From fd2a67e0eb536f8c963b1035394c538ddaf3160f Mon Sep 17 00:00:00 2001
From: luwenpeng <luwenpeng@geedgenetworks.com>
Date: Fri, 5 Aug 2022 18:25:06 +0800
Subject: [PATCH 15/17] bugfix CI

---
 .gitlab-ci.yml         | 16 ++++++++--------
 cmake/PostInstall.in   |  1 +
 cmake/PostUninstall.in |  1 +
 cmake/PreUninstall.in  |  1 +
 src/CMakeLists.txt     |  4 +++-
 5 files changed, 14 insertions(+), 9 deletions(-)
 create mode 100644 cmake/PostInstall.in
 create mode 100644 cmake/PostUninstall.in
 create mode 100644 cmake/PreUninstall.in

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 0e52438..a3cf3a8 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -64,7 +64,7 @@ develop_build_debug_for_centos7:
   extends: .build_by_travis_for_centos7
   variables:
     TESTING_VERSION_BUILD: 1
-    UPLOAD_SYMBOL_FILES: 1
+    # UPLOAD_SYMBOL_FILES: 1
     BUILD_TYPE: Debug
     # ASAN_OPTION: ADDRESS
     PACKAGE: 1
@@ -82,7 +82,7 @@ develop_build_release_for_centos7:
   extends: .build_by_travis_for_centos7
   variables:
     TESTING_VERSION_BUILD: 1
-    UPLOAD_SYMBOL_FILES: 1
+    # UPLOAD_SYMBOL_FILES: 1
     # ASAN_OPTION: ADDRESS
     BUILD_TYPE: RelWithDebInfo
     PACKAGE: 1
@@ -98,7 +98,7 @@ develop_build_release_for_centos7:
 
 release_build_debug_for_centos7:
   variables:
-    UPLOAD_SYMBOL_FILES: 1
+    # UPLOAD_SYMBOL_FILES: 1
     BUILD_TYPE: Debug
     PACKAGE: 1
     PULP3_REPO_NAME: stellar-stable-x86_64.el7
@@ -114,7 +114,7 @@ release_build_debug_for_centos7:
 release_build_release_for_centos7:
   variables:
     BUILD_TYPE: RelWithDebInfo
-    UPLOAD_SYMBOL_FILES: 1
+    # UPLOAD_SYMBOL_FILES: 1
     PACKAGE: 1
     PULP3_REPO_NAME: stellar-stable-x86_64.el7
     PULP3_DIST_NAME: stellar-stable-x86_64.el7
@@ -152,7 +152,7 @@ develop_build_debug_for_centos8:
   extends: .build_by_travis_for_centos8
   variables:
     TESTING_VERSION_BUILD: 1
-    UPLOAD_SYMBOL_FILES: 1
+    # UPLOAD_SYMBOL_FILES: 1
     BUILD_TYPE: Debug
     # ASAN_OPTION: ADDRESS
     PACKAGE: 1
@@ -170,7 +170,7 @@ develop_build_release_for_centos8:
   extends: .build_by_travis_for_centos8
   variables:
     TESTING_VERSION_BUILD: 1
-    UPLOAD_SYMBOL_FILES: 1
+    # UPLOAD_SYMBOL_FILES: 1
     # ASAN_OPTION: ADDRESS
     BUILD_TYPE: RelWithDebInfo
     PACKAGE: 1
@@ -186,7 +186,7 @@ develop_build_release_for_centos8:
 
 release_build_debug_for_centos8:
   variables:
-    UPLOAD_SYMBOL_FILES: 1
+    # UPLOAD_SYMBOL_FILES: 1
     BUILD_TYPE: Debug
     PACKAGE: 1
     PULP3_REPO_NAME: stellar-stable-x86_64.el8
@@ -202,7 +202,7 @@ release_build_debug_for_centos8:
 release_build_release_for_centos8:
   variables:
     BUILD_TYPE: RelWithDebInfo
-    UPLOAD_SYMBOL_FILES: 1
+    # UPLOAD_SYMBOL_FILES: 1
     PACKAGE: 1
     PULP3_REPO_NAME: stellar-stable-x86_64.el8
     PULP3_DIST_NAME: stellar-stable-x86_64.el8
diff --git a/cmake/PostInstall.in b/cmake/PostInstall.in
new file mode 100644
index 0000000..d601599
--- /dev/null
+++ b/cmake/PostInstall.in
@@ -0,0 +1 @@
+/sbin/ldconfig
\ No newline at end of file
diff --git a/cmake/PostUninstall.in b/cmake/PostUninstall.in
new file mode 100644
index 0000000..d601599
--- /dev/null
+++ b/cmake/PostUninstall.in
@@ -0,0 +1 @@
+/sbin/ldconfig
\ No newline at end of file
diff --git a/cmake/PreUninstall.in b/cmake/PreUninstall.in
new file mode 100644
index 0000000..d601599
--- /dev/null
+++ b/cmake/PreUninstall.in
@@ -0,0 +1 @@
+/sbin/ldconfig
\ No newline at end of file
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 6b4ad06..bed233d 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -23,4 +23,6 @@ target_link_libraries(
 	http
 	toml
 	dl
-)
\ No newline at end of file
+)
+
+install(TARGETS stellar RUNTIME DESTINATION bin COMPONENT Program)
\ No newline at end of file

From 0f7468b9946e29e19cd8a6f8c63e6949e29b9b02 Mon Sep 17 00:00:00 2001
From: luwenpeng <luwenpeng@geedgenetworks.com>
Date: Mon, 8 Aug 2022 14:19:32 +0800
Subject: [PATCH 16/17] Refactored pm_session_dettach_others to
 pm_session_take_over

---
 readme.md                                     | 15 ++--
 sdk/example/custom_event_plugin.cpp           | 17 ----
 sdk/example/http_event_plugin.cpp             | 12 +--
 .../custom_event_plugin.inf                   |  1 -
 .../http_event_plugin/http_event_plugin.inf   |  1 -
 sdk/include/http.h                            |  3 +-
 sdk/include/plugin.h                          | 15 +++-
 sdk/include/session.h                         |  6 --
 src/main.cpp                                  |  2 +-
 src/plugin_manager/plugin_manager.cpp         | 89 ++++++++++++-------
 src/plugin_manager/plugin_manager.h           |  2 +-
 src/plugin_manager/plugin_manager_config.cpp  |  8 --
 src/plugin_manager/plugin_manager_config.h    |  1 -
 src/plugin_manager/plugin_manager_module.cpp  | 12 +--
 .../test/gtest_plugin_manager.cpp             |  8 +-
 .../custom_event_plugin.inf                   |  1 -
 .../http_event_plugin/http_event_plugin.inf   |  1 -
 .../plugins_library/custom_event_plugin.cpp   | 24 -----
 .../plugins_library/http_event_plugin.cpp     | 12 +--
 src/protocol_decoder/http/http.cpp            |  4 -
 20 files changed, 91 insertions(+), 143 deletions(-)

diff --git a/readme.md b/readme.md
index 5b375b8..b6d1023 100644
--- a/readme.md
+++ b/readme.md
@@ -42,17 +42,20 @@ Plugin Management APIs
 
 ```
 /*
- * The plugin manager just set the skip flag and don't call this event callback next.
+ * The pm_session_dettach_me just sets the flag to disable this plugin and no longer call this event callback.
  * Before calling pm_session_dettach_me, the current plugin must release related resources for the current session.
  */
 pm_session_dettach_me(session);
 
 /*
- * The plugin manager uses ERROR_EVENT_DETTACH to call other plugin error callbacks, 
- * and when the plugin error callback handler is called, 
- * the error callback handler must release the relevant resources for the current session.
+ * The current plugin takes over the current session, the pm_session_take_over setting flag disables other plugins,
+ * and the current session does not call other plugins except for the SESSION_EVENT_CLOSING event.
+ *
+ * The current plugin may be taken over while the session is open (SESSION_EVENT_OPENING),
+ * other plugins event_cb is not called, the session pme on other plugins is NULL,
+ * When the session is closed (SESSION_EVENT_CLOSING), call other plugin even_cb to destroy pme must check if pme is NULL.
  */
-pm_session_dettach_others(session);
+pm_session_take_over(session);
 ```
 
 ## Session Manager
@@ -82,7 +85,7 @@ plugin_entry(session, pme)
   ret=check_security_policy(session);
   if(ret==INTERCEPT)
   {
-    pm_session_dettach_others(session);
+    pm_session_take_over(session);
   }
   else if(ret==RATE_LIMIT)
   {
diff --git a/sdk/example/custom_event_plugin.cpp b/sdk/example/custom_event_plugin.cpp
index dc56c0d..8034d99 100644
--- a/sdk/example/custom_event_plugin.cpp
+++ b/sdk/example/custom_event_plugin.cpp
@@ -56,23 +56,6 @@ static void custom_session_pme_destory(struct custom_session_pme *pme)
 	}
 }
 
-extern "C" void custom_event_plugin_error(const struct stellar_session *session, enum error_event_type event, void **pme)
-{
-	if (strcmp(stellar_session_get_name(session), "TCP") == 0)
-	{
-		struct tcp_session_pme **per_tcp_session_pme = (struct tcp_session_pme **)pme;
-		printf("RUN custom_event_plugin_error, session_name: 'TCP', error_event_type: %d, pme->data: %s\n", event, (*per_tcp_session_pme) == NULL ? "NULL" : (*per_tcp_session_pme)->data);
-		tcp_session_pme_destory(*per_tcp_session_pme);
-	}
-
-	if (strcmp(stellar_session_get_name(session), "CUSTOM") == 0)
-	{
-		struct custom_session_pme **per_custom_session_pme = (struct custom_session_pme **)pme;
-		printf("RUN custom_event_plugin_error, session_name: 'CUSTOM', error_event_type: %d, pme->data: %s\n", event, (*per_custom_session_pme) == NULL ? "NULL" : (*per_custom_session_pme)->data);
-		custom_session_pme_destory(*per_custom_session_pme);
-	}
-}
-
 extern "C" void custom_event_plugin_tcp_entry(const struct stellar_session *session, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
 {
 	struct tcp_session_pme **per_tcp_session_pme = (struct tcp_session_pme **)pme;
diff --git a/sdk/example/http_event_plugin.cpp b/sdk/example/http_event_plugin.cpp
index 4f795d3..ef1e761 100644
--- a/sdk/example/http_event_plugin.cpp
+++ b/sdk/example/http_event_plugin.cpp
@@ -29,16 +29,6 @@ static void http_session_pme_destory(struct http_session_pme *pme)
 	}
 }
 
-extern "C" void http_event_plugin_error(const struct stellar_session *session, enum error_event_type event, void **pme)
-{
-	if (strcmp(stellar_session_get_name(session), "HTTP") == 0)
-	{
-		struct http_session_pme **per_http_session_pme = (struct http_session_pme **)pme;
-		printf("RUN http_event_plugin_error, session_name: 'HTTP', error_event_type: %d, pme->data: %s\n", event, (*per_http_session_pme) == NULL ? "NULL" : (*per_http_session_pme)->data);
-		http_session_pme_destory(*per_http_session_pme);
-	}
-}
-
 extern "C" void http_event_plugin_entry(const struct stellar_session *session, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
 {
 	struct http_session_pme **per_http_session_pme = (struct http_session_pme **)pme;
@@ -64,7 +54,7 @@ extern "C" void http_event_plugin_entry(const struct stellar_session *session, e
 	if (event & SESSION_EVENT_ORDPKT)
 	{
 		// TODO
-		pm_session_dettach_others(session);
+		pm_session_take_over(session);
 	}
 
 	if (event & SESSION_EVENT_META)
diff --git a/sdk/example/plugins/custom_event_plugin/custom_event_plugin.inf b/sdk/example/plugins/custom_event_plugin/custom_event_plugin.inf
index 3718be0..08c84a3 100644
--- a/sdk/example/plugins/custom_event_plugin/custom_event_plugin.inf
+++ b/sdk/example/plugins/custom_event_plugin/custom_event_plugin.inf
@@ -1,7 +1,6 @@
 [PLUGINFO]
 INIT_FUNC="custom_event_plugin_init"
 EXIT_FUNC="custom_event_plugin_exit"
-ERROR_FUNC="custom_event_plugin_error"
 LIBRARY_PATH="./plugins/custom_event_plugin/custom_event_plugin.so"
 
 # Support SESSION_EVENT_TYPE: "SESSION_EVENT_OPENING", "SESSION_EVENT_RAWPKT", "SESSION_EVENT_ORDPKT", "SESSION_EVENT_META", "SESSION_EVENT_CLOSING", "SESSION_EVENT_ALL"
diff --git a/sdk/example/plugins/http_event_plugin/http_event_plugin.inf b/sdk/example/plugins/http_event_plugin/http_event_plugin.inf
index e0f2704..a58a405 100644
--- a/sdk/example/plugins/http_event_plugin/http_event_plugin.inf
+++ b/sdk/example/plugins/http_event_plugin/http_event_plugin.inf
@@ -1,7 +1,6 @@
 [PLUGINFO]
 INIT_FUNC="http_event_plugin_init"
 EXIT_FUNC="http_event_plugin_exit"
-ERROR_FUNC="http_event_plugin_error"
 LIBRARY_PATH="./plugins/http_event_plugin/http_event_plugin.so"
 
 # Support SESSION_EVENT_TYPE: "SESSION_EVENT_OPENING", "SESSION_EVENT_RAWPKT", "SESSION_EVENT_ORDPKT", "SESSION_EVENT_META", "SESSION_EVENT_CLOSING", "SESSION_EVENT_ALL"
diff --git a/sdk/include/http.h b/sdk/include/http.h
index 4db1126..6250055 100644
--- a/sdk/include/http.h
+++ b/sdk/include/http.h
@@ -2,5 +2,4 @@
 
 #include "session.h"
 
-void http_decoder(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme);
-void http_error_cb(const struct stellar_session *s, enum error_event_type event, void **pme);
\ No newline at end of file
+void http_decoder(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme);
\ No newline at end of file
diff --git a/sdk/include/plugin.h b/sdk/include/plugin.h
index 0d6c346..301363a 100644
--- a/sdk/include/plugin.h
+++ b/sdk/include/plugin.h
@@ -15,8 +15,21 @@ typedef void plugin_exit_callback(void);
  * Public API For Plugin
  ******************************************************************************/
 
+/*
+ * The pm_session_dettach_me just sets the flag to disable this plugin and no longer call this event callback.
+ * Before calling pm_session_dettach_me, the current plugin must release related resources for the current session.
+ */
 void pm_session_dettach_me(const struct stellar_session *session);
-void pm_session_dettach_others(const struct stellar_session *session);
+
+/*
+ * The current plugin takes over the current session, the pm_session_take_over setting flag disables other plugins,
+ * and the current session does not call other plugins except for the SESSION_EVENT_CLOSING event.
+ *
+ * The current plugin may be taken over while the session is open (SESSION_EVENT_OPENING),
+ * other plugins event_cb is not called, the session pme on other plugins is NULL,
+ * When the session is closed (SESSION_EVENT_CLOSING), call other plugin even_cb to destroy pme must check if pme is NULL.
+ */
+void pm_session_take_over(const struct stellar_session *session);
 
 #ifdef __cpluscplus
 }
diff --git a/sdk/include/session.h b/sdk/include/session.h
index 8c4b25f..8ce3d26 100644
--- a/sdk/include/session.h
+++ b/sdk/include/session.h
@@ -40,14 +40,8 @@ enum session_event_type
 	SESSION_EVENT_ALL = (0x01 << 1 | 0x01 << 2 | 0x01 << 3 | 0x01 << 4 | 0x01 << 5),
 };
 
-enum error_event_type
-{
-	ERROR_EVENT_DETTACH = (0x1 << 10),
-};
-
 struct stellar_session_event_extras;
 
-typedef void(fn_session_error_callback)(const struct stellar_session *s, enum error_event_type event, void **pme);
 typedef void(fn_session_event_callback)(const struct stellar_session *s, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme);
 
 void session_manager_trigger_event(struct stellar_session *s, enum session_event_type type, struct stellar_session_event_extras *info);
diff --git a/src/main.cpp b/src/main.cpp
index 2b1d541..75f803c 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -59,7 +59,7 @@ int main(int argc, char ** argv)
 	struct plugin_manager *plug_mgr = plugin_manager_create();
 
 	// register build-in plugin
-	plugin_manager_register(plug_mgr, "HTTP", SESSION_EVENT_ALL, http_decoder, http_error_cb);
+	plugin_manager_register(plug_mgr, "HTTP", SESSION_EVENT_ALL, http_decoder);
 
 	// load external plugins
 	char file_path[] = "./plugs/plugins.inf";
diff --git a/src/plugin_manager/plugin_manager.cpp b/src/plugin_manager/plugin_manager.cpp
index 95f63b4..d90122c 100644
--- a/src/plugin_manager/plugin_manager.cpp
+++ b/src/plugin_manager/plugin_manager.cpp
@@ -10,14 +10,20 @@
  * CallBack Runtime (For Per Session)
  ******************************************************************************/
 
+enum plugin_status
+{
+	PLUGIN_STATUS_NORMAL = 0x00,
+	PLUGIN_STATUS_DETTACH_ME = 0x01,
+	PLUGIN_STATUS_TAKEN_OVER = 0x02, // Noitce: this is taken over not take over
+};
+
 struct callback_runtime
 {
-	int skip;
+	enum plugin_status status;
 	void *cb_args;
 
 	enum session_event_type event;
 	fn_session_event_callback *event_cb;
-	fn_session_error_callback *error_cb;
 };
 
 struct session_plugin_ctx
@@ -35,7 +41,6 @@ struct callback_static
 {
 	enum session_event_type event;
 	fn_session_event_callback *event_cb;
-	fn_session_error_callback *error_cb;
 };
 
 struct plugin_manager_eventcb
@@ -90,10 +95,9 @@ static struct session_plugin_ctx *plugin_manager_create_plugin_ctx(struct plugin
 
 		for (int i = 0; i < plug_ctx->callback_num; i++)
 		{
-			plug_ctx->callbacks[i].skip = 0;
+			plug_ctx->callbacks[i].status = PLUGIN_STATUS_NORMAL;
 			plug_ctx->callbacks[i].event = elem->callbacks[i].event;
 			plug_ctx->callbacks[i].event_cb = elem->callbacks[i].event_cb;
-			plug_ctx->callbacks[i].error_cb = elem->callbacks[i].error_cb;
 			plug_ctx->callbacks[i].cb_args = NULL;
 		}
 
@@ -336,7 +340,7 @@ void plugin_manager_destory(struct plugin_manager *plug_mgr)
 	}
 }
 
-int plugin_manager_register(struct plugin_manager *plug_mgr, const char *session_name, enum session_event_type event, fn_session_event_callback *event_cb, fn_session_error_callback *error_cb)
+int plugin_manager_register(struct plugin_manager *plug_mgr, const char *session_name, enum session_event_type event, fn_session_event_callback *event_cb)
 {
 	if (strlen(session_name) <= 0)
 	{
@@ -356,12 +360,6 @@ int plugin_manager_register(struct plugin_manager *plug_mgr, const char *session
 		return -1;
 	}
 
-	if (error_cb == NULL)
-	{
-		plugin_manager_log(ERROR, "invalid parameter, the error callback corresponding to the session name '%s' is null", session_name);
-		return -1;
-	}
-
 	struct plugin_manager_eventcb *elem;
 	HASH_FIND_STR(plug_mgr->evcb_htable, session_name, elem);
 	// session_name exists, add a new cb to the end of the callbacks dynamic array
@@ -371,7 +369,6 @@ int plugin_manager_register(struct plugin_manager *plug_mgr, const char *session
 
 		elem->callbacks[elem->callback_num].event = event;
 		elem->callbacks[elem->callback_num].event_cb = event_cb;
-		elem->callbacks[elem->callback_num].error_cb = error_cb;
 
 		elem->callback_num++;
 	}
@@ -385,7 +382,6 @@ int plugin_manager_register(struct plugin_manager *plug_mgr, const char *session
 
 		elem->callbacks[elem->callback_num].event = event;
 		elem->callbacks[elem->callback_num].event_cb = event_cb;
-		elem->callbacks[elem->callback_num].error_cb = error_cb;
 
 		elem->callback_num++;
 
@@ -431,17 +427,43 @@ void plugin_manager_dispatch(struct plugin_manager *plug_mgr, struct stellar_eve
 		for (int i = 0; i < plug_ctx->callback_num; i++)
 		{
 			struct callback_runtime *runtime = &plug_ctx->callbacks[i];
-			if (runtime->skip == 1)
+
+			if (runtime->status == PLUGIN_STATUS_DETTACH_ME)
 			{
-				plugin_manager_log(DEBUG, "dispatch, skip event_cb: %p, session: %s, event: (%d, %s)", runtime->event_cb, session_name, event_type, event_str_buffer);
+				plugin_manager_log(DEBUG, "dispatch, skip event_cb: %p, plugin status: 'dettach me', session: %s, event: (%d, %s)", runtime->event_cb, session_name, event_type, event_str_buffer);
 				continue;
 			}
-
-			if (runtime->event & event_type)
+			else if (runtime->status == PLUGIN_STATUS_TAKEN_OVER)
 			{
-				plug_ctx->callback_index = i;
-				plugin_manager_log(DEBUG, "dispatch, run event_cb: %p, session: %s, event: (%d, %s)", runtime->event_cb, session_name, event_type, event_str_buffer);
-				runtime->event_cb(seesion, event_type, packet, payload, payload_len, &runtime->cb_args);
+				/*
+				 * This plugin may be taken over when the session is open (SESSION_EVENT_OPENING),
+				 * and the pme may be NULL when event_cb() is run to free memory with the session is closed (SESSION_EVENT_CLOSING).
+				 * So, The plugin must check whether the pme is NULL before freeing memory.
+				 */
+				if (event_type & SESSION_EVENT_CLOSING)
+				{
+					plug_ctx->callback_index = i;
+					plugin_manager_log(DEBUG, "dispatch, run event_cb: %p, plugin status: 'taken over', session: %s, event: (%d, %s)", runtime->event_cb, session_name, event_type, event_str_buffer);
+					runtime->event_cb(seesion, SESSION_EVENT_CLOSING, packet, payload, payload_len, &runtime->cb_args);
+					continue;
+				}
+				else
+				{
+					plugin_manager_log(DEBUG, "dispatch, skip event_cb: %p, plugin status: 'taken over', session: %s, event: (%d, %s)", runtime->event_cb, session_name, event_type, event_str_buffer);
+				}
+			}
+			else if (runtime->status == PLUGIN_STATUS_NORMAL)
+			{
+				if (runtime->event & event_type)
+				{
+					plug_ctx->callback_index = i;
+					plugin_manager_log(DEBUG, "dispatch, run event_cb: %p, plugin status: 'normal', session: %s, event: (%d, %s)", runtime->event_cb, session_name, event_type, event_str_buffer);
+					runtime->event_cb(seesion, event_type, packet, payload, payload_len, &runtime->cb_args);
+				}
+				else
+				{
+					plugin_manager_log(DEBUG, "dispatch, skip event_cb: %p, plugin status: 'normal', session: %s, event: (%d, %s)", runtime->event_cb, session_name, event_type, event_str_buffer);
+				}
 			}
 		}
 	}
@@ -462,21 +484,29 @@ void plugin_manager_dispatch(struct plugin_manager *plug_mgr, struct stellar_eve
  * Public API For Plugin
  ******************************************************************************/
 
+/*
+ * pm_session_dettach_me just sets the flag to disable this plugin and no longer call this event callback.
+ * Before calling pm_session_dettach_me, the current plugin must release related resources for the current session.
+ */
 void pm_session_dettach_me(const struct stellar_session *session)
 {
 	struct session_plugin_ctx *plugin_ctx = stellar_session_get_plugin_ctx(session);
 	assert(plugin_ctx);
 	struct callback_runtime *runtime_me = &plugin_ctx->callbacks[plugin_ctx->callback_index];
 
-	/*
-	 * Just set the skip flag and don't call this event callback next.
-	 * The plugin is closed before calling pm_session_dettach_me.
-	 */
-	runtime_me->skip = 1;
+	runtime_me->status = PLUGIN_STATUS_DETTACH_ME;
 	plugin_manager_log(DEBUG, "%p dettach me, disable event_cb: %p, session: %s", runtime_me->event_cb, runtime_me->event_cb, stellar_session_get_name(session));
 }
 
-void pm_session_dettach_others(const struct stellar_session *session)
+/*
+ * The current plugin takes over the current session, the pm_session_take_over setting flag disables other plugins,
+ * and the current session does not call other plugins except for the SESSION_EVENT_CLOSING event.
+ *
+ * The current plugin may be taken over while the session is open (SESSION_EVENT_OPENING),
+ * other plugins event_cb is not called, the session pme on other plugins is NULL,
+ * When the session is closed (SESSION_EVENT_CLOSING), call other plugin even_cb to destroy pme must check if pme is NULL
+ */
+void pm_session_take_over(const struct stellar_session *session)
 {
 	struct session_plugin_ctx *plugin_ctx = stellar_session_get_plugin_ctx(session);
 	assert(plugin_ctx);
@@ -487,9 +517,8 @@ void pm_session_dettach_others(const struct stellar_session *session)
 		if (i != plugin_ctx->callback_index)
 		{
 			struct callback_runtime *runtime_other = &plugin_ctx->callbacks[i];
-			runtime_other->skip = 1;
-			plugin_manager_log(DEBUG, "%p dettach others, run error_cb: %p, session: %s", runtime_me->event_cb, runtime_other->error_cb, stellar_session_get_name(session));
-			runtime_other->error_cb(session, ERROR_EVENT_DETTACH, &runtime_other->cb_args);
+			runtime_other->status = PLUGIN_STATUS_TAKEN_OVER;
+			plugin_manager_log(DEBUG, "%p take over, disable event_cb: %p, session: %s", runtime_me->event_cb, runtime_other->event_cb, stellar_session_get_name(session));
 		}
 	}
 }
diff --git a/src/plugin_manager/plugin_manager.h b/src/plugin_manager/plugin_manager.h
index 2827483..b23e874 100644
--- a/src/plugin_manager/plugin_manager.h
+++ b/src/plugin_manager/plugin_manager.h
@@ -16,7 +16,7 @@ void plugin_manager_destory(struct plugin_manager *plug_mgr);
 int plugin_manager_load(struct plugin_manager *plug_mgr, const char *file);
 void plugin_manager_unload(struct plugin_manager *plug_mgr);
 
-int plugin_manager_register(struct plugin_manager *plug_mgr, const char *session_name, enum session_event_type event, fn_session_event_callback *event_cb, fn_session_error_callback *error_cb);
+int plugin_manager_register(struct plugin_manager *plug_mgr, const char *session_name, enum session_event_type event, fn_session_event_callback *event_cb);
 void plugin_manager_dispatch(struct plugin_manager *plug_mgr, struct stellar_event *event);
 
 // only use for gtest
diff --git a/src/plugin_manager/plugin_manager_config.cpp b/src/plugin_manager/plugin_manager_config.cpp
index 89dd39b..1772900 100644
--- a/src/plugin_manager/plugin_manager_config.cpp
+++ b/src/plugin_manager/plugin_manager_config.cpp
@@ -62,11 +62,6 @@ static int toml_parse_plugin_section(toml_table_t *root, struct plugin_manager_c
         return -1;
     }
 
-    if (toml_parse_string(plugin_section, "ERROR_FUNC", file, &config->plugin_section.error_func_name) == -1)
-    {
-        return -1;
-    }
-
     if (toml_parse_string(plugin_section, "LIBRARY_PATH", file, &config->plugin_section.lib_path) == -1)
     {
         return -1;
@@ -174,7 +169,6 @@ struct plugin_manager_config *plugin_mangager_config_create()
     config->session_section = NULL;
     config->plugin_section.init_func_name = NULL;
     config->plugin_section.exit_func_name = NULL;
-    config->plugin_section.error_func_name = NULL;
     config->plugin_section.lib_path = NULL;
 
     return config;
@@ -188,7 +182,6 @@ void plugin_mangager_config_destory(struct plugin_manager_config *config)
 
         safe_free(config->plugin_section.init_func_name);
         safe_free(config->plugin_section.exit_func_name);
-        safe_free(config->plugin_section.error_func_name);
         safe_free(config->plugin_section.lib_path);
 
         if (config->session_section)
@@ -213,7 +206,6 @@ void plugin_mangager_config_dump(struct plugin_manager_config *config)
         plugin_manager_log(DEBUG, "[CONFIG_FILE]            : %s", config->file_path);
         plugin_manager_log(DEBUG, "[PLUGINFO]->INIT_FUNC    : %s", config->plugin_section.init_func_name);
         plugin_manager_log(DEBUG, "[PLUGINFO]->EXIT_FUNC    : %s", config->plugin_section.exit_func_name);
-        plugin_manager_log(DEBUG, "[PLUGINFO]->ERROR_FUNC   : %s", config->plugin_section.error_func_name);
         plugin_manager_log(DEBUG, "[PLUGINFO]->LIBRARY_PATH : %s", config->plugin_section.lib_path);
 
         if (config->session_section)
diff --git a/src/plugin_manager/plugin_manager_config.h b/src/plugin_manager/plugin_manager_config.h
index 16a62ba..e028a15 100644
--- a/src/plugin_manager/plugin_manager_config.h
+++ b/src/plugin_manager/plugin_manager_config.h
@@ -20,7 +20,6 @@ struct plugin_section_config
 {
     char *init_func_name;
     char *exit_func_name;
-    char *error_func_name;
     char *lib_path;
 };
 
diff --git a/src/plugin_manager/plugin_manager_module.cpp b/src/plugin_manager/plugin_manager_module.cpp
index 2ff7179..7756da5 100644
--- a/src/plugin_manager/plugin_manager_module.cpp
+++ b/src/plugin_manager/plugin_manager_module.cpp
@@ -20,7 +20,6 @@ struct plugin_manager_module
 
     plugin_init_callback *init_cb_ptr;
     plugin_exit_callback *exit_cb_ptr;
-    fn_session_error_callback *error_cb_ptr;
 
     struct plugin_manager_module_evcb *evcbs;
     int evcbs_num;
@@ -85,14 +84,6 @@ struct plugin_manager_module *plugin_manager_module_open(struct plugin_manager_c
         goto err;
     }
 
-    module->error_cb_ptr = (fn_session_error_callback *)(dlsym(module->dl_handle, config->plugin_section.error_func_name));
-    if (module->error_cb_ptr == NULL)
-    {
-        plugin_manager_log(ERROR, "can't find symbol name of '%s' in dynamic library %s, %s",
-                           config->plugin_section.error_func_name, module->lib_path, dlerror());
-        goto err;
-    }
-
     if (config->session_section)
     {
         module->evcbs = safe_alloc(struct plugin_manager_module_evcb, config->session_section_num);
@@ -170,7 +161,7 @@ int plugin_manager_module_register(struct plugin_manager *plug_mgr, struct plugi
         {
             struct plugin_manager_module_evcb *event_cb = &module->evcbs[i];
 
-            if (plugin_manager_register(plug_mgr, event_cb->session_name, event_cb->event, event_cb->event_cb_ptr, module->error_cb_ptr) == -1)
+            if (plugin_manager_register(plug_mgr, event_cb->session_name, event_cb->event, event_cb->event_cb_ptr) == -1)
             {
                 plugin_manager_log(ERROR, "dynamic library '%s' failed to register the event callback function of session '%s'", module->lib_path, event_cb->session_name);
                 return -1;
@@ -188,7 +179,6 @@ void plugin_manager_module_dump(struct plugin_manager_module *module, struct plu
         plugin_manager_log(DEBUG, "[LIBRARY]    : %s, %p", config->plugin_section.lib_path, module->dl_handle);
         plugin_manager_log(DEBUG, "[INIT_FUNC]  : %s, %p", config->plugin_section.init_func_name, module->init_cb_ptr);
         plugin_manager_log(DEBUG, "[EXIT_FUNC]  : %s, %p", config->plugin_section.exit_func_name, module->exit_cb_ptr);
-        plugin_manager_log(DEBUG, "[ERROR_FUNC] : %s, %p", config->plugin_section.error_func_name, module->error_cb_ptr);
 
         for (int i = 0; i < module->evcbs_num; i++)
         {
diff --git a/src/plugin_manager/test/gtest_plugin_manager.cpp b/src/plugin_manager/test/gtest_plugin_manager.cpp
index dbe267f..6afd126 100644
--- a/src/plugin_manager/test/gtest_plugin_manager.cpp
+++ b/src/plugin_manager/test/gtest_plugin_manager.cpp
@@ -144,7 +144,6 @@ TEST(PLUGIN_MANAGER_TEST, plugin_mangager_config_HTTP)
 	EXPECT_STREQ(config->file_path, "./plugins_config/http_event_plugin/http_event_plugin.inf");
 	EXPECT_STREQ(config->plugin_section.init_func_name, "http_event_plugin_init");
 	EXPECT_STREQ(config->plugin_section.exit_func_name, "http_event_plugin_exit");
-	EXPECT_STREQ(config->plugin_section.error_func_name, "http_event_plugin_error");
 	EXPECT_STREQ(config->plugin_section.lib_path, "./test_plugins/plugins_library/http_event_plugin_test.so");
 
 	EXPECT_TRUE(config->session_section_num == 1);
@@ -170,7 +169,6 @@ TEST(PLUGIN_MANAGER_TEST, plugin_mangager_config_CUSTOM)
 	EXPECT_STREQ(config->file_path, "./plugins_config/custom_event_plugin/custom_event_plugin.inf");
 	EXPECT_STREQ(config->plugin_section.init_func_name, "custom_event_plugin_init");
 	EXPECT_STREQ(config->plugin_section.exit_func_name, "custom_event_plugin_exit");
-	EXPECT_STREQ(config->plugin_section.error_func_name, "custom_event_plugin_error");
 	EXPECT_STREQ(config->plugin_section.lib_path, "./test_plugins/plugins_library/custom_event_plugin_test.so");
 
 	EXPECT_TRUE(config->session_section_num == 3);
@@ -494,8 +492,8 @@ TEST(PLUGIN_MANAGER_TEST, plugin_manager_dispatch_HTTP_dettach_me)
 #endif
 
 #if 1
-// http_event_plugin_entry + SESSION_EVENT_ORDPKT ==> pm_session_dettach_others
-TEST(PLUGIN_MANAGER_TEST, plugin_manager_dispatch_HTTP_dettach_other)
+// http_event_plugin_entry + SESSION_EVENT_ORDPKT ==> pm_session_take_over
+TEST(PLUGIN_MANAGER_TEST, plugin_manager_dispatch_HTTP_take_over)
 {
 	/*
 	 * [SESSION_NAME.HTTP]
@@ -542,7 +540,7 @@ TEST(PLUGIN_MANAGER_TEST, plugin_manager_dispatch_HTTP_dettach_other)
 	EXPECT_TRUE(pme->flags == SESSION_EVENT_OPENING);
 	EXPECT_STREQ(pme->data, "custom_event_plugin_http_entry");
 
-	// http_event_plugin_entry + SESSION_EVENT_ORDPKT ==> pm_session_dettach_others
+	// http_event_plugin_entry + SESSION_EVENT_ORDPKT ==> pm_session_take_over
 	event_data.type = SESSION_EVENT_ORDPKT;
 	plugin_manager_dispatch(plug_mgr, &event);
 	pme = (struct http_session_pme *)pm_session_get_plugin_pme(&session);
diff --git a/src/plugin_manager/test/test_plugins/plugins_config/custom_event_plugin/custom_event_plugin.inf b/src/plugin_manager/test/test_plugins/plugins_config/custom_event_plugin/custom_event_plugin.inf
index 5df88aa..d3ff370 100644
--- a/src/plugin_manager/test/test_plugins/plugins_config/custom_event_plugin/custom_event_plugin.inf
+++ b/src/plugin_manager/test/test_plugins/plugins_config/custom_event_plugin/custom_event_plugin.inf
@@ -1,7 +1,6 @@
 [PLUGINFO]
 INIT_FUNC="custom_event_plugin_init"
 EXIT_FUNC="custom_event_plugin_exit"
-ERROR_FUNC="custom_event_plugin_error"
 LIBRARY_PATH="./test_plugins/plugins_library/custom_event_plugin_test.so"
 
 # Support SESSION_EVENT_TYPE: "SESSION_EVENT_OPENING", "SESSION_EVENT_RAWPKT", "SESSION_EVENT_ORDPKT", "SESSION_EVENT_META", "SESSION_EVENT_CLOSING", "SESSION_EVENT_ALL"
diff --git a/src/plugin_manager/test/test_plugins/plugins_config/http_event_plugin/http_event_plugin.inf b/src/plugin_manager/test/test_plugins/plugins_config/http_event_plugin/http_event_plugin.inf
index cf0d16b..1dd124b 100644
--- a/src/plugin_manager/test/test_plugins/plugins_config/http_event_plugin/http_event_plugin.inf
+++ b/src/plugin_manager/test/test_plugins/plugins_config/http_event_plugin/http_event_plugin.inf
@@ -1,7 +1,6 @@
 [PLUGINFO]
 INIT_FUNC="http_event_plugin_init"
 EXIT_FUNC="http_event_plugin_exit"
-ERROR_FUNC="http_event_plugin_error"
 LIBRARY_PATH="./test_plugins/plugins_library/http_event_plugin_test.so"
 
 # Support SESSION_EVENT_TYPE: "SESSION_EVENT_OPENING", "SESSION_EVENT_RAWPKT", "SESSION_EVENT_ORDPKT", "SESSION_EVENT_META", "SESSION_EVENT_CLOSING", "SESSION_EVENT_ALL"
diff --git a/src/plugin_manager/test/test_plugins/plugins_library/custom_event_plugin.cpp b/src/plugin_manager/test/test_plugins/plugins_library/custom_event_plugin.cpp
index dc34f1e..3757bbc 100644
--- a/src/plugin_manager/test/test_plugins/plugins_library/custom_event_plugin.cpp
+++ b/src/plugin_manager/test/test_plugins/plugins_library/custom_event_plugin.cpp
@@ -79,30 +79,6 @@ static void http_session_pme_destory(struct http_session_pme *pme)
 	}
 }
 
-extern "C" void custom_event_plugin_error(const struct stellar_session *session, enum error_event_type event, void **pme)
-{
-	if (strcmp(stellar_session_get_name(session), "TCP") == 0)
-	{
-		struct tcp_session_pme **per_tcp_session_pme = (struct tcp_session_pme **)pme;
-		printf("RUN custom_event_plugin_error, session_name: 'TCP', error_event_type: %d, pme->data: %s\n", event, (*per_tcp_session_pme) == NULL ? "NULL" : (*per_tcp_session_pme)->data);
-		tcp_session_pme_destory(*per_tcp_session_pme);
-	}
-
-	if (strcmp(stellar_session_get_name(session), "CUSTOM") == 0)
-	{
-		struct custom_session_pme **per_custom_session_pme = (struct custom_session_pme **)pme;
-		printf("RUN custom_event_plugin_error, session_name: 'CUSTOM', error_event_type: %d, pme->data: %s\n", event, (*per_custom_session_pme) == NULL ? "NULL" : (*per_custom_session_pme)->data);
-		custom_session_pme_destory(*per_custom_session_pme);
-	}
-
-	if (strcmp(stellar_session_get_name(session), "HTTP") == 0)
-	{
-		struct http_session_pme **per_http_session_pme = (struct http_session_pme **)pme;
-		printf("RUN custom_event_plugin_error, session_name: 'HTTP', error_event_type: %d, pme->data: %s\n", event, (*per_http_session_pme) == NULL ? "NULL" : (*per_http_session_pme)->data);
-		http_session_pme_destory(*per_http_session_pme);
-	}
-}
-
 extern "C" void custom_event_plugin_tcp_entry(const struct stellar_session *session, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
 {
 	struct tcp_session_pme **per_tcp_session_pme = (struct tcp_session_pme **)pme;
diff --git a/src/plugin_manager/test/test_plugins/plugins_library/http_event_plugin.cpp b/src/plugin_manager/test/test_plugins/plugins_library/http_event_plugin.cpp
index 487d6bf..939ef34 100644
--- a/src/plugin_manager/test/test_plugins/plugins_library/http_event_plugin.cpp
+++ b/src/plugin_manager/test/test_plugins/plugins_library/http_event_plugin.cpp
@@ -30,16 +30,6 @@ static void http_session_pme_destory(struct http_session_pme *pme)
 	}
 }
 
-extern "C" void http_event_plugin_error(const struct stellar_session *session, enum error_event_type event, void **pme)
-{
-	if (strcmp(stellar_session_get_name(session), "HTTP") == 0)
-	{
-		struct http_session_pme **per_http_session_pme = (struct http_session_pme **)pme;
-		printf("RUN http_event_plugin_error, session_name: 'HTTP', error_event_type: %d, pme->data: %s\n", event, (*per_http_session_pme) == NULL ? "NULL" : (*per_http_session_pme)->data);
-		http_session_pme_destory(*per_http_session_pme);
-	}
-}
-
 extern "C" void http_event_plugin_entry(const struct stellar_session *session, enum session_event_type event, struct stellar_packet *p, const char *payload, uint16_t len, void **pme)
 {
 	struct http_session_pme **per_http_session_pme = (struct http_session_pme **)pme;
@@ -72,7 +62,7 @@ extern "C" void http_event_plugin_entry(const struct stellar_session *session, e
 	{
 		// TODO
 		(*per_http_session_pme)->flags = SESSION_EVENT_ORDPKT;
-		pm_session_dettach_others(session);
+		pm_session_take_over(session);
 	}
 
 	if (event & SESSION_EVENT_META)
diff --git a/src/protocol_decoder/http/http.cpp b/src/protocol_decoder/http/http.cpp
index c7e3e79..cb8f0d9 100644
--- a/src/protocol_decoder/http/http.cpp
+++ b/src/protocol_decoder/http/http.cpp
@@ -9,8 +9,4 @@ void http_decoder(const struct stellar_session *s, enum session_event_type event
 
 	session_manager_trigger_event(new_session, SESSION_EVENT_OPENING, info);
 	session_manager_trigger_event(new_session, SESSION_EVENT_META, info);
-}
-
-void http_error_cb(const struct stellar_session *s, enum error_event_type event, void **pme)
-{
 }
\ No newline at end of file

From 9df6bf07af341a2878363302408102a6856c6bbc Mon Sep 17 00:00:00 2001
From: luwenpeng <luwenpeng@geedgenetworks.com>
Date: Tue, 9 Aug 2022 16:00:06 +0800
Subject: [PATCH 17/17] Modify the implementation of the plugin manager take
 over

    A plugin that is taken over, if the plugin was called before being taken over
    and has a registered SESSION_EVENT_CLOSING event,
    it will be called again when the SESSION_EVENT_CLOSING event comes.
    Otherwise, the plugin will not be called.
---
 readme.md                                    | 14 +++++++---
 sdk/include/plugin.h                         | 14 +++++++---
 src/plugin_manager/plugin_manager.cpp        | 28 +++++++++++---------
 src/plugin_manager/plugin_manager_config.cpp |  4 +++
 src/plugin_manager/plugin_manager_util.cpp   | 17 ++++++------
 src/plugin_manager/plugin_manager_util.h     |  9 +++++--
 6 files changed, 55 insertions(+), 31 deletions(-)

diff --git a/readme.md b/readme.md
index b6d1023..e889e1d 100644
--- a/readme.md
+++ b/readme.md
@@ -48,12 +48,18 @@ Plugin Management APIs
 pm_session_dettach_me(session);
 
 /*
- * The current plugin takes over the current session, the pm_session_take_over setting flag disables other plugins,
+ * The current plugin(cb2) takes over the current session, the pm_session_take_over setting flag disables other plugins,
  * and the current session does not call other plugins except for the SESSION_EVENT_CLOSING event.
  *
- * The current plugin may be taken over while the session is open (SESSION_EVENT_OPENING),
- * other plugins event_cb is not called, the session pme on other plugins is NULL,
- * When the session is closed (SESSION_EVENT_CLOSING), call other plugin even_cb to destroy pme must check if pme is NULL.
+ *                               +-----+   +-----+   +-----+   +-----+
+ * Plugin runtime callback list: | cb1 |-->| cb2 |-->| cb3 |-->| cb4 |
+ *                               +-----+   +-----+   +-----+   +-----+
+ *                                           /|\
+ *                                            |
+ *                         plugin cb2 run pm_session_take_over
+ * 
+ * A plugin(cb1/cb3/cb4) that is taken over, if the plugin was called before being taken over and has a registered SESSION_EVENT_CLOSING event,
+ * it will be called again when the SESSION_EVENT_CLOSING event comes. Otherwise, the plugin will not be called.
  */
 pm_session_take_over(session);
 ```
diff --git a/sdk/include/plugin.h b/sdk/include/plugin.h
index 301363a..7042bbe 100644
--- a/sdk/include/plugin.h
+++ b/sdk/include/plugin.h
@@ -22,12 +22,18 @@ typedef void plugin_exit_callback(void);
 void pm_session_dettach_me(const struct stellar_session *session);
 
 /*
- * The current plugin takes over the current session, the pm_session_take_over setting flag disables other plugins,
+ * The current plugin(cb2) takes over the current session, the pm_session_take_over setting flag disables other plugins,
  * and the current session does not call other plugins except for the SESSION_EVENT_CLOSING event.
  *
- * The current plugin may be taken over while the session is open (SESSION_EVENT_OPENING),
- * other plugins event_cb is not called, the session pme on other plugins is NULL,
- * When the session is closed (SESSION_EVENT_CLOSING), call other plugin even_cb to destroy pme must check if pme is NULL.
+ *                               +-----+   +-----+   +-----+   +-----+
+ * Plugin runtime callback list: | cb1 |-->| cb2 |-->| cb3 |-->| cb4 |
+ *                               +-----+   +-----+   +-----+   +-----+
+ *                                           /|\
+ *                                            |
+ *                         plugin cb2 run pm_session_take_over
+ * 
+ * A plugin(cb1/cb3/cb4) that is taken over, if the plugin was called before being taken over and has a registered SESSION_EVENT_CLOSING event,
+ * it will be called again when the SESSION_EVENT_CLOSING event comes. Otherwise, the plugin will not be called.
  */
 void pm_session_take_over(const struct stellar_session *session);
 
diff --git a/src/plugin_manager/plugin_manager.cpp b/src/plugin_manager/plugin_manager.cpp
index d90122c..88aae1e 100644
--- a/src/plugin_manager/plugin_manager.cpp
+++ b/src/plugin_manager/plugin_manager.cpp
@@ -19,11 +19,12 @@ enum plugin_status
 
 struct callback_runtime
 {
-	enum plugin_status status;
 	void *cb_args;
+	fn_session_event_callback *event_cb;
 
 	enum session_event_type event;
-	fn_session_event_callback *event_cb;
+	enum plugin_status status;
+	int is_be_called;
 };
 
 struct session_plugin_ctx
@@ -95,6 +96,7 @@ static struct session_plugin_ctx *plugin_manager_create_plugin_ctx(struct plugin
 
 		for (int i = 0; i < plug_ctx->callback_num; i++)
 		{
+			plug_ctx->callbacks[i].is_be_called = 0;
 			plug_ctx->callbacks[i].status = PLUGIN_STATUS_NORMAL;
 			plug_ctx->callbacks[i].event = elem->callbacks[i].event;
 			plug_ctx->callbacks[i].event_cb = elem->callbacks[i].event_cb;
@@ -435,12 +437,7 @@ void plugin_manager_dispatch(struct plugin_manager *plug_mgr, struct stellar_eve
 			}
 			else if (runtime->status == PLUGIN_STATUS_TAKEN_OVER)
 			{
-				/*
-				 * This plugin may be taken over when the session is open (SESSION_EVENT_OPENING),
-				 * and the pme may be NULL when event_cb() is run to free memory with the session is closed (SESSION_EVENT_CLOSING).
-				 * So, The plugin must check whether the pme is NULL before freeing memory.
-				 */
-				if (event_type & SESSION_EVENT_CLOSING)
+				if ((event_type & SESSION_EVENT_CLOSING) && (runtime->event & SESSION_EVENT_CLOSING) && runtime->is_be_called)
 				{
 					plug_ctx->callback_index = i;
 					plugin_manager_log(DEBUG, "dispatch, run event_cb: %p, plugin status: 'taken over', session: %s, event: (%d, %s)", runtime->event_cb, session_name, event_type, event_str_buffer);
@@ -459,6 +456,7 @@ void plugin_manager_dispatch(struct plugin_manager *plug_mgr, struct stellar_eve
 					plug_ctx->callback_index = i;
 					plugin_manager_log(DEBUG, "dispatch, run event_cb: %p, plugin status: 'normal', session: %s, event: (%d, %s)", runtime->event_cb, session_name, event_type, event_str_buffer);
 					runtime->event_cb(seesion, event_type, packet, payload, payload_len, &runtime->cb_args);
+					runtime->is_be_called = 1;
 				}
 				else
 				{
@@ -499,12 +497,18 @@ void pm_session_dettach_me(const struct stellar_session *session)
 }
 
 /*
- * The current plugin takes over the current session, the pm_session_take_over setting flag disables other plugins,
+ * The current plugin(cb2) takes over the current session, the pm_session_take_over setting flag disables other plugins,
  * and the current session does not call other plugins except for the SESSION_EVENT_CLOSING event.
  *
- * The current plugin may be taken over while the session is open (SESSION_EVENT_OPENING),
- * other plugins event_cb is not called, the session pme on other plugins is NULL,
- * When the session is closed (SESSION_EVENT_CLOSING), call other plugin even_cb to destroy pme must check if pme is NULL
+ *                               +-----+   +-----+   +-----+   +-----+
+ * Plugin runtime callback list: | cb1 |-->| cb2 |-->| cb3 |-->| cb4 |
+ *                               +-----+   +-----+   +-----+   +-----+
+ *                                           /|\
+ *                                            |
+ *                         plugin cb2 run pm_session_take_over
+ * 
+ * A plugin(cb1/cb3/cb4) that is taken over, if the plugin was called before being taken over and has a registered SESSION_EVENT_CLOSING event,
+ * it will be called again when the SESSION_EVENT_CLOSING event comes. Otherwise, the plugin will not be called.
  */
 void pm_session_take_over(const struct stellar_session *session)
 {
diff --git a/src/plugin_manager/plugin_manager_config.cpp b/src/plugin_manager/plugin_manager_config.cpp
index 1772900..b73fb8d 100644
--- a/src/plugin_manager/plugin_manager_config.cpp
+++ b/src/plugin_manager/plugin_manager_config.cpp
@@ -149,6 +149,10 @@ static int toml_parse_session_section(toml_table_t *root, struct plugin_manager_
             (config->session_section[config->session_section_num].event) = (enum session_event_type)((config->session_section[config->session_section_num].event) | type_int);
             safe_free(type_str.u.s);
         }
+        if ((config->session_section[config->session_section_num].event & SESSION_EVENT_CLOSING) == 0)
+        {
+            plugin_manager_log(WARN, "can't find 'SESSION_EVENT_CLOSING' value for 'SESSION_EVENT_TYPE' configuration item in '[SESSION_NAME.%s]' section of %s", session_name, file);
+        }
 
         config->session_section_num++;
     }
diff --git a/src/plugin_manager/plugin_manager_util.cpp b/src/plugin_manager/plugin_manager_util.cpp
index 08f903f..43de099 100644
--- a/src/plugin_manager/plugin_manager_util.cpp
+++ b/src/plugin_manager/plugin_manager_util.cpp
@@ -29,15 +29,14 @@ struct event_type_map
 	enum session_event_type type_int;
 };
 
-static struct event_type_map evtype_map[] =
-	{
-		{"SESSION_EVENT_UNKNOWN", SESSION_EVENT_UNKNOWN},
-		{"SESSION_EVENT_OPENING", SESSION_EVENT_OPENING},
-		{"SESSION_EVENT_RAWPKT", SESSION_EVENT_RAWPKT},
-		{"SESSION_EVENT_ORDPKT", SESSION_EVENT_ORDPKT},
-		{"SESSION_EVENT_META", SESSION_EVENT_META},
-		{"SESSION_EVENT_CLOSING", SESSION_EVENT_CLOSING},
-		{"SESSION_EVENT_ALL", SESSION_EVENT_ALL},
+static struct event_type_map evtype_map[] = {
+	{"SESSION_EVENT_UNKNOWN", SESSION_EVENT_UNKNOWN},
+	{"SESSION_EVENT_OPENING", SESSION_EVENT_OPENING},
+	{"SESSION_EVENT_RAWPKT", SESSION_EVENT_RAWPKT},
+	{"SESSION_EVENT_ORDPKT", SESSION_EVENT_ORDPKT},
+	{"SESSION_EVENT_META", SESSION_EVENT_META},
+	{"SESSION_EVENT_CLOSING", SESSION_EVENT_CLOSING},
+	{"SESSION_EVENT_ALL", SESSION_EVENT_ALL},
 };
 
 enum session_event_type session_event_type_str2int(const char *evtype_str)
diff --git a/src/plugin_manager/plugin_manager_util.h b/src/plugin_manager/plugin_manager_util.h
index 13b85db..890e61d 100644
--- a/src/plugin_manager/plugin_manager_util.h
+++ b/src/plugin_manager/plugin_manager_util.h
@@ -38,8 +38,9 @@ char *safe_dup(const char *str);
 enum plugin_manager_log_level
 {
     DEBUG = 0x11,
-    INFO = 0x12,
-    ERROR = 0x13,
+    WARN = 0x12,
+    INFO = 0x13,
+    ERROR = 0x14,
 };
 
 #ifndef plugin_manager_log
@@ -51,6 +52,10 @@ enum plugin_manager_log_level
             fprintf(stdout, "PLUGIN_MANAGER [DEBUG] " format "\n", ##__VA_ARGS__); \
             fflush(stdout);                                                        \
             break;                                                                 \
+        case WARN:                                                                 \
+            fprintf(stdout, "PLUGIN_MANAGER [WARN] " format "\n", ##__VA_ARGS__);  \
+            fflush(stdout);                                                        \
+            break;                                                                 \
         case INFO:                                                                 \
             fprintf(stdout, "PLUGIN_MANAGER [INFO] " format "\n", ##__VA_ARGS__);  \
             fflush(stdout);                                                        \