diff --git a/src/packet/ipv4_helpers.h b/src/packet/ipv4_helpers.h
index 0ef1a09..c0d440d 100644
--- a/src/packet/ipv4_helpers.h
+++ b/src/packet/ipv4_helpers.h
@@ -129,6 +129,16 @@ static inline void ipv4_hdr_set_ipid(struct ip *hdr, uint16_t ipid)
     hdr->ip_id = htons(ipid);
 }
 
+static inline void ipv4_hdr_set_host_order_saddr(struct ip *hdr, uint32_t saddr)
+{
+    hdr->ip_src.s_addr = htonl(saddr);
+}
+
+static inline void ipv4_hdr_set_host_order_daddr(struct ip *hdr, uint32_t daddr)
+{
+    hdr->ip_dst.s_addr = htonl(daddr);
+}
+
 #ifdef __cpluscplus
 }
 #endif
diff --git a/src/session/session_manager.cpp b/src/session/session_manager.cpp
index 08f48a5..7d3788a 100644
--- a/src/session/session_manager.cpp
+++ b/src/session/session_manager.cpp
@@ -43,6 +43,11 @@ struct session_manager
      uint64_t udp_active_sess_num;
      uint64_t udp_closing_sess_num;
 
+     uint64_t tcp_overload_evict_old_sess_num;
+     uint64_t tcp_overload_evict_new_sess_num;
+     uint64_t udp_overload_evict_old_sess_num;
+     uint64_t udp_overload_evict_new_sess_num;
+
      // packet filter status
      uint64_t npkts_miss_l4_proto; // fast forward
 
@@ -196,6 +201,19 @@ static int session_manager_check_config(struct session_manager_config *config)
           return -1;
      }
 
+     // session overload
+     if (config->tcp_overload_evict_old_sess != 0 && config->tcp_overload_evict_old_sess != 1)
+     {
+          SESSION_LOG_ERROR("invalid tcp overload evict old session, support range: 0-1");
+          return -1;
+     }
+
+     if (config->udp_overload_evict_old_sess != 0 && config->udp_overload_evict_old_sess != 1)
+     {
+          SESSION_LOG_ERROR("invalid udp overload evict old session, support range: 0-1");
+          return -1;
+     }
+
      // TCP timeout config
      if (config->tcp_timeout_init < 1 || config->tcp_timeout_init > 60)
      {
@@ -797,11 +815,27 @@ static struct session *session_manager_new_tcp_session(struct session_manager *m
           return NULL;
      }
 
-     if (mgr->tcp_sess_num == mgr->config.max_tcp_session_num - 1)
+     if (mgr->tcp_sess_num >= mgr->config.max_tcp_session_num - 1)
      {
-          struct session *evicted_sess = session_table_find_least_recently_unused_session(mgr->tcp_sess_table);
-          assert(evicted_sess);
-          session_manager_evicte_session(mgr, evicted_sess);
+          if (mgr->config.tcp_overload_evict_old_sess)
+          {
+               struct session *evicted_sess = session_table_find_least_recently_unused_session(mgr->tcp_sess_table);
+               assert(evicted_sess);
+               session_manager_evicte_session(mgr, evicted_sess);
+               mgr->tcp_overload_evict_old_sess_num++;
+          }
+          else
+          {
+               if (mgr->tcp_sess_num >= mgr->config.max_tcp_session_num)
+               {
+                    mgr->tcp_overload_evict_new_sess_num++;
+                    return NULL;
+               }
+               else
+               {
+                    // continue;
+               }
+          }
      }
 
      struct session *sess = session_pool_alloc(mgr->sess_pool);
@@ -828,11 +862,27 @@ static struct session *session_manager_new_udp_session(struct session_manager *m
           return NULL;
      }
 
-     if (mgr->udp_sess_num == mgr->config.max_udp_session_num - 1)
+     if (mgr->udp_sess_num >= mgr->config.max_udp_session_num - 1)
      {
-          struct session *evicted_sess = session_table_find_least_recently_unused_session(mgr->udp_sess_table);
-          assert(evicted_sess);
-          session_manager_evicte_session(mgr, evicted_sess);
+          if (mgr->config.udp_overload_evict_old_sess)
+          {
+               struct session *evicted_sess = session_table_find_least_recently_unused_session(mgr->udp_sess_table);
+               assert(evicted_sess);
+               session_manager_evicte_session(mgr, evicted_sess);
+               mgr->udp_overload_evict_old_sess_num++;
+          }
+          else
+          {
+               if (mgr->udp_sess_num >= mgr->config.max_udp_session_num)
+               {
+                    mgr->udp_overload_evict_new_sess_num++;
+                    return NULL;
+               }
+               else
+               {
+                    // continue;
+               }
+          }
      }
 
      struct session *sess = session_pool_alloc(mgr->sess_pool);
@@ -1186,11 +1236,16 @@ void session_manager_get_session_counter(struct session_manager *mgr, struct ses
      out->udp_opening_sess_num = mgr->udp_opening_sess_num;
      out->udp_active_sess_num = mgr->udp_active_sess_num;
      out->udp_closing_sess_num = mgr->udp_closing_sess_num;
+
+     out->tcp_overload_evict_old_sess_num = mgr->tcp_overload_evict_old_sess_num;
+     out->tcp_overload_evict_new_sess_num = mgr->tcp_overload_evict_new_sess_num;
+     out->udp_overload_evict_old_sess_num = mgr->udp_overload_evict_old_sess_num;
+     out->udp_overload_evict_new_sess_num = mgr->udp_overload_evict_new_sess_num;
 }
 
 void session_manager_print_status(struct session_manager *mgr)
 {
-     printf("session status:\n");
+     printf("session manager status:\n");
 
      printf("tcp session number    : %lu\n", mgr->tcp_sess_num);
      printf("    opening number    : %lu\n", mgr->tcp_opening_sess_num);
@@ -1200,6 +1255,12 @@ void session_manager_print_status(struct session_manager *mgr)
      printf("    opening number    : %lu\n", mgr->udp_opening_sess_num);
      printf("    active number     : %lu\n", mgr->udp_active_sess_num);
      printf("    closing number    : %lu\n", mgr->udp_closing_sess_num);
+     printf("tcp overload evict    : \n");
+     printf("    old session number: %lu\n", mgr->tcp_overload_evict_old_sess_num);
+     printf("    new session number: %lu\n", mgr->tcp_overload_evict_new_sess_num);
+     printf("udp overload evict    : \n");
+     printf("    old session number: %lu\n", mgr->udp_overload_evict_old_sess_num);
+     printf("    new session number: %lu\n", mgr->udp_overload_evict_new_sess_num);
 
      printf("packet status:\n");
      printf("    miss l4 proto     : %lu  (bypass)\n", mgr->npkts_miss_l4_proto);
diff --git a/src/session/session_manager.h b/src/session/session_manager.h
index 7a6cac4..5e0fa30 100644
--- a/src/session/session_manager.h
+++ b/src/session/session_manager.h
@@ -23,6 +23,10 @@ struct session_manager_config
     uint64_t max_tcp_session_num;
     uint64_t max_udp_session_num;
 
+    // session overload
+    uint8_t tcp_overload_evict_old_sess; // 1: evict old session, 0: bypass new session
+    uint8_t udp_overload_evict_old_sess; // 1: evict old session, 0: bypass new session
+
     // TCP timeout
     uint64_t tcp_timeout_init;        // seconds, Range: 1-60
     uint64_t tcp_timeout_handshake;   // seconds, Range: 1-60
@@ -80,6 +84,11 @@ struct session_counter
     uint64_t udp_opening_sess_num;
     uint64_t udp_active_sess_num;
     uint64_t udp_closing_sess_num;
+
+    uint64_t tcp_overload_evict_old_sess_num;
+    uint64_t tcp_overload_evict_new_sess_num;
+    uint64_t udp_overload_evict_old_sess_num;
+    uint64_t udp_overload_evict_new_sess_num;
 };
 
 void session_manager_get_session_counter(struct session_manager *mgr, struct session_counter *out);
diff --git a/src/session/test/CMakeLists.txt b/src/session/test/CMakeLists.txt
index 324519e..48ca904 100644
--- a/src/session/test/CMakeLists.txt
+++ b/src/session/test/CMakeLists.txt
@@ -79,6 +79,16 @@ target_link_libraries(gtest_filter_tcp_dupkt session_manager gtest)
 add_executable(gtest_filter_udp_eviction gtest_filter_udp_eviction.cpp)
 target_link_libraries(gtest_filter_udp_eviction session_manager gtest)
 
+###############################################################################
+# gtest overload
+###############################################################################
+
+add_executable(gtest_overload_evict_tcp_sess gtest_overload_evict_tcp_sess.cpp)
+target_link_libraries(gtest_overload_evict_tcp_sess session_manager gtest)
+
+add_executable(gtest_overload_evict_udp_sess gtest_overload_evict_udp_sess.cpp)
+target_link_libraries(gtest_overload_evict_udp_sess session_manager gtest)
+
 ###############################################################################
 # gtest
 ###############################################################################
@@ -107,4 +117,7 @@ gtest_discover_tests(gtest_timeout_tcp_half_closed)
 gtest_discover_tests(gtest_timeout_udp_data)
 
 gtest_discover_tests(gtest_filter_tcp_dupkt)
-gtest_discover_tests(gtest_filter_udp_eviction)
\ No newline at end of file
+gtest_discover_tests(gtest_filter_udp_eviction)
+
+gtest_discover_tests(gtest_overload_evict_tcp_sess)
+gtest_discover_tests(gtest_overload_evict_udp_sess)
\ No newline at end of file
diff --git a/src/session/test/gtest_filter_tcp_dupkt.cpp b/src/session/test/gtest_filter_tcp_dupkt.cpp
index 69062c2..c909de2 100644
--- a/src/session/test/gtest_filter_tcp_dupkt.cpp
+++ b/src/session/test/gtest_filter_tcp_dupkt.cpp
@@ -44,16 +44,16 @@ TEST(TCP_DUPKT_FILTER_ENABLE, SYN_DUP)
     EXPECT_TRUE(session_get_dup_traffic_flag(sess) == DUP_TRAFFIC_YES);
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
 #endif
 
 #if 1
-TEST(TCP_DUPKT_FILTER_ENABLE, S2C_DUPKT)
+TEST(TCP_DUPKT_FILTER_ENABLE, S2C_DUP)
 {
     struct packet pkt;
     struct session *sess = NULL;
@@ -96,9 +96,9 @@ TEST(TCP_DUPKT_FILTER_ENABLE, S2C_DUPKT)
     EXPECT_TRUE(session_get_dup_traffic_flag(sess) == DUP_TRAFFIC_YES);
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -164,9 +164,9 @@ TEST(TCP_DUPKT_FILTER_ENABLE, SKIP_FILTER)
     EXPECT_TRUE(sess);
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -219,16 +219,16 @@ TEST(TCP_DUPKT_FILTER_DISABLE, C2S_DUPKT)
     EXPECT_TRUE(session_get_dup_traffic_flag(sess) == DUP_TRAFFIC_NO);
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
 #endif
 
 #if 1
-TEST(TCP_DUPKT_FILTER_DISABLE, S2C_DUPKT)
+TEST(TCP_DUPKT_FILTER_DISABLE, S2C_DUP)
 {
     struct packet pkt;
     struct session *sess = NULL;
@@ -274,9 +274,9 @@ TEST(TCP_DUPKT_FILTER_DISABLE, S2C_DUPKT)
     EXPECT_TRUE(session_get_dup_traffic_flag(sess) == DUP_TRAFFIC_NO);
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
diff --git a/src/session/test/gtest_filter_udp_eviction.cpp b/src/session/test/gtest_filter_udp_eviction.cpp
index 1adc5b6..dbd0d5a 100644
--- a/src/session/test/gtest_filter_udp_eviction.cpp
+++ b/src/session/test/gtest_filter_udp_eviction.cpp
@@ -21,9 +21,9 @@ TEST(UDP_EVICTION_FILTER_ENABLE, HIT_FILTER_THEN_EVICT_SESS)
     __session_dispatch(sess);
 
     // wait session timeout
-    __session_manager_check_counter(mgr, 0, 0, 0, 1, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     // C2S REQ Packet
     printf("=> packet parse: UDP C2S REQ packet\n");
@@ -61,9 +61,9 @@ TEST(UDP_EVICTION_FILTER_ENABLE, MISS_FILTER_THEN_NEW_SESS)
     __session_dispatch(sess);
 
     // wait session timeout
-    __session_manager_check_counter(mgr, 0, 0, 0, 1, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     // wait udp eviction filter timeout
     sleep(_config.udp_eviction_filter_timeout);
@@ -77,9 +77,9 @@ TEST(UDP_EVICTION_FILTER_ENABLE, MISS_FILTER_THEN_NEW_SESS)
     EXPECT_TRUE(sess); // add new udp session
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 0, 0, 1, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -109,9 +109,9 @@ TEST(UDP_EVICTION_FILTER_DISABLE, MISS_FILTER_THEN_NEW_SESS)
     __session_dispatch(sess);
 
     // wait session timeout
-    __session_manager_check_counter(mgr, 0, 0, 0, 1, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     // C2S REQ Packet
     printf("=> packet parse: UDP C2S REQ packet\n");
@@ -121,9 +121,9 @@ TEST(UDP_EVICTION_FILTER_DISABLE, MISS_FILTER_THEN_NEW_SESS)
     EXPECT_TRUE(sess); // add new udp session
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 0, 0, 1, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
diff --git a/src/session/test/gtest_overload_evict_tcp_sess.cpp b/src/session/test/gtest_overload_evict_tcp_sess.cpp
new file mode 100644
index 0000000..dea8abc
--- /dev/null
+++ b/src/session/test/gtest_overload_evict_tcp_sess.cpp
@@ -0,0 +1,156 @@
+#include "test_utils.h"
+
+static void overwrite_ipv4_saddr(struct packet *pkt, uint32_t saddr)
+{
+    const struct layer_record *ipv4_layer = packet_get_innermost_layer(pkt, LAYER_TYPE_IPV4);
+    EXPECT_TRUE(ipv4_layer);
+    const struct ip *hdr = (const struct ip *)ipv4_layer->hdr_ptr;
+    ipv4_hdr_set_host_order_saddr((struct ip *)hdr, saddr);
+}
+
+#if 1
+TEST(OVERLOAD, EVICT_TCP_OLD_SESS)
+{
+    struct tuple6 key;
+    struct packet pkt;
+    struct session *sess = NULL;
+    struct session_manager *mgr = NULL;
+    char buffer[1500] = {0};
+
+    timestamp_update();
+
+    mgr = session_manager_create(&config);
+    EXPECT_TRUE(mgr != NULL);
+
+    for (uint64_t i = 0; i < config.max_tcp_session_num; i++)
+    {
+        // C2S SYN Packet
+        printf("\n====================== new session (%lu) ======================\n\n", i + 1);
+        printf("=> packet parse: TCP C2S SYN packet\n");
+        memcpy(buffer, tcp_pkt1_c2s_syn, sizeof(tcp_pkt1_c2s_syn));
+        packet_parse(&pkt, (const char *)buffer, sizeof(tcp_pkt1_c2s_syn));
+        overwrite_ipv4_saddr(&pkt, i + 1);
+        printf("<= packet parse\n\n");
+        sess = session_manager_update_session(mgr, &pkt);
+        EXPECT_TRUE(sess);
+
+        __session_dispatch(sess);
+        session_manager_print_status(mgr);
+
+        if (i == config.max_tcp_session_num - 1)
+        {
+            __session_manager_check_counter(mgr,
+                                            i, 0, 1, // tcp_opening_sess_num, tcp_active_sess_num, tcp_closing_sess_num,
+                                            0, 0, 0, // udp_opening_sess_num, udp_active_sess_num, udp_closing_sess_num,
+                                            0, 1,    // tcp_overload_evict_new_sess_num, tcp_overload_evict_old_sess_num,
+                                            0, 0);   // udp_overload_evict_new_sess_num, udp_overload_evict_old_sess_num,
+        }
+        else
+        {
+            __session_manager_check_counter(mgr,
+                                            i + 1, 0, 0, // tcp_opening_sess_num, tcp_active_sess_num, tcp_closing_sess_num,
+                                            0, 0, 0,     // udp_opening_sess_num, udp_active_sess_num, udp_closing_sess_num,
+                                            0, 0,        // tcp_overload_evict_new_sess_num, tcp_overload_evict_old_sess_num,
+                                            0, 0);       // udp_overload_evict_new_sess_num, udp_overload_evict_old_sess_num,
+        }
+    }
+    printf("\n====================== evicted session ======================\n\n");
+    // evicted oldest session
+    sess = session_manager_get_evicted_session(mgr);
+    EXPECT_TRUE(sess);
+    EXPECT_TRUE(session_get_state(sess) == SESSION_STATE_CLOSING);
+    EXPECT_TRUE(session_get_closing_reasion(sess) == CLOSING_BY_EVICTED);
+
+    packet_parse(&pkt, (const char *)tcp_pkt1_c2s_syn, sizeof(tcp_pkt1_c2s_syn));
+    overwrite_ipv4_saddr(&pkt, 1);
+    memset(&key, 0, sizeof(struct tuple6));
+    packet_get_innermost_tuple6(&pkt, &key);
+    EXPECT_TRUE(tuple6_cmp(session_get0_key(sess), &key) == 0);
+    __session_dispatch(sess);
+    session_manager_print_status(mgr);
+
+    printf("\n====================== expired session ======================\n\n");
+    __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
+    __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
+
+    printf("\n====================== end status ======================\n\n");
+    session_manager_print_status(mgr);
+    __session_manager_check_counter(mgr,
+                                    0, 0, 0, // tcp_opening_sess_num, tcp_active_sess_num, tcp_closing_sess_num,
+                                    0, 0, 0, // udp_opening_sess_num, udp_active_sess_num, udp_closing_sess_num,
+                                    0, 1,    // tcp_overload_evict_new_sess_num, tcp_overload_evict_old_sess_num,
+                                    0, 0);   // udp_overload_evict_new_sess_num, udp_overload_evict_old_sess_num,
+    session_manager_destroy(mgr);
+}
+#endif
+
+#if 1
+TEST(OVERLOAD, EVICT_TCP_NEW_SESS)
+{
+    struct packet pkt;
+    struct session *sess = NULL;
+    struct session_manager *mgr = NULL;
+    char buffer[1500] = {0};
+    struct session_manager_config _config;
+    memcpy(&_config, &config, sizeof(struct session_manager_config));
+    _config.tcp_overload_evict_old_sess = 0;
+
+    timestamp_update();
+
+    mgr = session_manager_create(&_config);
+    EXPECT_TRUE(mgr != NULL);
+
+    for (uint64_t i = 0; i <= _config.max_tcp_session_num; i++)
+    {
+        // C2S SYN Packet
+        printf("\n====================== new session (%lu) ======================\n\n", i + 1);
+        printf("=> packet parse: TCP C2S SYN packet\n");
+        memcpy(buffer, tcp_pkt1_c2s_syn, sizeof(tcp_pkt1_c2s_syn));
+        packet_parse(&pkt, (const char *)buffer, sizeof(tcp_pkt1_c2s_syn));
+        overwrite_ipv4_saddr(&pkt, i + 1);
+        printf("<= packet parse\n\n");
+        sess = session_manager_update_session(mgr, &pkt);
+
+        if (i == _config.max_tcp_session_num)
+        {
+            EXPECT_TRUE(sess == NULL);
+            __session_manager_check_counter(mgr,
+                                            i, 0, 0, // tcp_opening_sess_num, tcp_active_sess_num, tcp_closing_sess_num,
+                                            0, 0, 0, // udp_opening_sess_num, udp_active_sess_num, udp_closing_sess_num,
+                                            1, 0,    // tcp_overload_evict_new_sess_num, tcp_overload_evict_old_sess_num,
+                                            0, 0);   // udp_overload_evict_new_sess_num, udp_overload_evict_old_sess_num,
+        }
+        else
+        {
+            EXPECT_TRUE(sess);
+            __session_manager_check_counter(mgr,
+                                            i + 1, 0, 0, // tcp_opening_sess_num, tcp_active_sess_num, tcp_closing_sess_num,
+                                            0, 0, 0,     // udp_opening_sess_num, udp_active_sess_num, udp_closing_sess_num,
+                                            0, 0,        // tcp_overload_evict_new_sess_num, tcp_overload_evict_old_sess_num,
+                                            0, 0);       // udp_overload_evict_new_sess_num, udp_overload_evict_old_sess_num,
+        }
+
+        __session_dispatch(sess);
+        session_manager_print_status(mgr);
+    }
+
+    printf("\n====================== expired session ======================\n\n");
+    __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
+    __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
+
+    printf("\n====================== end status ======================\n\n");
+    session_manager_print_status(mgr);
+    __session_manager_check_counter(mgr,
+                                    0, 0, 0, // tcp_opening_sess_num, tcp_active_sess_num, tcp_closing_sess_num,
+                                    0, 0, 0, // udp_opening_sess_num, udp_active_sess_num, udp_closing_sess_num,
+                                    1, 0,    // tcp_overload_evict_new_sess_num, tcp_overload_evict_old_sess_num,
+                                    0, 0);   // udp_overload_evict_new_sess_num, udp_overload_evict_old_sess_num,
+    session_manager_destroy(mgr);
+}
+#endif
+
+int main(int argc, char **argv)
+{
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}
\ No newline at end of file
diff --git a/src/session/test/gtest_overload_evict_udp_sess.cpp b/src/session/test/gtest_overload_evict_udp_sess.cpp
new file mode 100644
index 0000000..8123131
--- /dev/null
+++ b/src/session/test/gtest_overload_evict_udp_sess.cpp
@@ -0,0 +1,19 @@
+#include "test_utils.h"
+
+#if 1
+TEST(OVERLOAD, EVICT_UDP_OLD_SESS)
+{
+}
+#endif
+
+#if 1
+TEST(OVERLOAD, EVICT_UDP_NEW_SESS)
+{
+}
+#endif
+
+int main(int argc, char **argv)
+{
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}
\ No newline at end of file
diff --git a/src/session/test/gtest_state_tcp_active_to_closing.cpp b/src/session/test/gtest_state_tcp_active_to_closing.cpp
index af3a33a..5053316 100644
--- a/src/session/test/gtest_state_tcp_active_to_closing.cpp
+++ b/src/session/test/gtest_state_tcp_active_to_closing.cpp
@@ -37,7 +37,7 @@ static void build_active_tcp_session(struct session_manager *mgr, struct session
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -71,7 +71,7 @@ static void build_active_tcp_session(struct session_manager *mgr, struct session
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -126,7 +126,7 @@ TEST(TCP_ACTIVE_TO_CLOSING, BY_FIN_FIN)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -160,9 +160,9 @@ TEST(TCP_ACTIVE_TO_CLOSING, BY_FIN_FIN)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_CLIENT_FIN);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -224,9 +224,9 @@ TEST(TCP_ACTIVE_TO_CLOSING, BY_C2S_RST)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_CLIENT_RST);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -288,9 +288,9 @@ TEST(TCP_ACTIVE_TO_CLOSING, BY_S2C_RST)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_SERVER_RST);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -314,9 +314,9 @@ TEST(TCP_ACTIVE_TO_CLOSING, BY_DATA_TIMEOUT)
     // C2S SYN Packet & C2S DATA Packet
     build_active_tcp_session(mgr, sess);
 
-    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -371,9 +371,9 @@ TEST(TCP_ACTIVE_TO_CLOSING, BY_C2S_HALF_CLOSED_TIMEOUT)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_CLIENT_FIN);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -428,9 +428,9 @@ TEST(TCP_ACTIVE_TO_CLOSING, BY_S2C_HALF_CLOSED_TIMEOUT)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_SERVER_FIN);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
diff --git a/src/session/test/gtest_state_tcp_init_to_opening.cpp b/src/session/test/gtest_state_tcp_init_to_opening.cpp
index 49eb0bd..02502e8 100644
--- a/src/session/test/gtest_state_tcp_init_to_opening.cpp
+++ b/src/session/test/gtest_state_tcp_init_to_opening.cpp
@@ -49,9 +49,9 @@ TEST(TCP_INIT_TO_OPENING, BY_SYN)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -104,9 +104,9 @@ TEST(TCP_INIT_TO_OPENING, BY_SYNACK)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -159,7 +159,7 @@ TEST(TCP_INIT_TO_OPENING, BY_SYN_SYNACK)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -194,9 +194,9 @@ TEST(TCP_INIT_TO_OPENING, BY_SYN_SYNACK)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -249,7 +249,7 @@ TEST(TCP_INIT_TO_OPENING, BY_SYN_SYNACK_ACK)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -284,7 +284,7 @@ TEST(TCP_INIT_TO_OPENING, BY_SYN_SYNACK_ACK)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -318,9 +318,9 @@ TEST(TCP_INIT_TO_OPENING, BY_SYN_SYNACK_ACK)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -375,7 +375,7 @@ TEST(TCP_INIT_TO_OPENING, BY_SYN_RETRANSMISSION)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -416,9 +416,9 @@ TEST(TCP_INIT_TO_OPENING, BY_SYN_RETRANSMISSION)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -473,7 +473,7 @@ TEST(TCP_INIT_TO_OPENING, BY_SYNACK_RETRANSMISSION)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -514,9 +514,9 @@ TEST(TCP_INIT_TO_OPENING, BY_SYNACK_RETRANSMISSION)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -569,7 +569,7 @@ TEST(TCP_INIT_TO_OPENING, BY_C2S_ASMMETRIC)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -604,9 +604,9 @@ TEST(TCP_INIT_TO_OPENING, BY_C2S_ASMMETRIC)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -659,7 +659,7 @@ TEST(TCP_INIT_TO_OPENING, BY_S2C_ASMMETRIC)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -694,9 +694,9 @@ TEST(TCP_INIT_TO_OPENING, BY_S2C_ASMMETRIC)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
diff --git a/src/session/test/gtest_state_tcp_init_to_opening_to_active_to_closing_to_closed.cpp b/src/session/test/gtest_state_tcp_init_to_opening_to_active_to_closing_to_closed.cpp
index 1e884bf..c83020f 100644
--- a/src/session/test/gtest_state_tcp_init_to_opening_to_active_to_closing_to_closed.cpp
+++ b/src/session/test/gtest_state_tcp_init_to_opening_to_active_to_closing_to_closed.cpp
@@ -46,7 +46,7 @@ TEST(TCP_INIT_TO_OPENING_TO_ACTIVE_TO_CLOSING_TO_CLOSED, TEST)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -81,7 +81,7 @@ TEST(TCP_INIT_TO_OPENING_TO_ACTIVE_TO_CLOSING_TO_CLOSED, TEST)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -116,7 +116,7 @@ TEST(TCP_INIT_TO_OPENING_TO_ACTIVE_TO_CLOSING_TO_CLOSED, TEST)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -151,7 +151,7 @@ TEST(TCP_INIT_TO_OPENING_TO_ACTIVE_TO_CLOSING_TO_CLOSED, TEST)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -186,7 +186,7 @@ TEST(TCP_INIT_TO_OPENING_TO_ACTIVE_TO_CLOSING_TO_CLOSED, TEST)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -221,7 +221,7 @@ TEST(TCP_INIT_TO_OPENING_TO_ACTIVE_TO_CLOSING_TO_CLOSED, TEST)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -256,7 +256,7 @@ TEST(TCP_INIT_TO_OPENING_TO_ACTIVE_TO_CLOSING_TO_CLOSED, TEST)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -291,7 +291,7 @@ TEST(TCP_INIT_TO_OPENING_TO_ACTIVE_TO_CLOSING_TO_CLOSED, TEST)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -326,7 +326,7 @@ TEST(TCP_INIT_TO_OPENING_TO_ACTIVE_TO_CLOSING_TO_CLOSED, TEST)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -361,7 +361,7 @@ TEST(TCP_INIT_TO_OPENING_TO_ACTIVE_TO_CLOSING_TO_CLOSED, TEST)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -396,9 +396,9 @@ TEST(TCP_INIT_TO_OPENING_TO_ACTIVE_TO_CLOSING_TO_CLOSED, TEST)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_CLIENT_FIN);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
diff --git a/src/session/test/gtest_state_tcp_opening_to_active.cpp b/src/session/test/gtest_state_tcp_opening_to_active.cpp
index 944fba8..28f84ca 100644
--- a/src/session/test/gtest_state_tcp_opening_to_active.cpp
+++ b/src/session/test/gtest_state_tcp_opening_to_active.cpp
@@ -49,7 +49,7 @@ TEST(TCP_OPENING_TO_ACTIVE, BY_SYN_C2S_DATA)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -83,9 +83,9 @@ TEST(TCP_OPENING_TO_ACTIVE, BY_SYN_C2S_DATA)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -138,7 +138,7 @@ TEST(TCP_OPENING_TO_ACTIVE, BY_SYNACK_S2C_DATA)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -172,9 +172,9 @@ TEST(TCP_OPENING_TO_ACTIVE, BY_SYNACK_S2C_DATA)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
diff --git a/src/session/test/gtest_state_tcp_opening_to_closing.cpp b/src/session/test/gtest_state_tcp_opening_to_closing.cpp
index 96c38db..f67a5a1 100644
--- a/src/session/test/gtest_state_tcp_opening_to_closing.cpp
+++ b/src/session/test/gtest_state_tcp_opening_to_closing.cpp
@@ -37,7 +37,7 @@ static void build_opening_tcp_session(struct session_manager *mgr, struct sessio
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -92,7 +92,7 @@ TEST(TCP_OPENING_TO_CLOSING, BY_FIN_FIN)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -126,9 +126,9 @@ TEST(TCP_OPENING_TO_CLOSING, BY_FIN_FIN)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_CLIENT_FIN);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -190,9 +190,9 @@ TEST(TCP_OPENING_TO_CLOSING, BY_C2S_RST)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_CLIENT_RST);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -254,9 +254,9 @@ TEST(TCP_OPENING_TO_CLOSING, BY_S2C_RST)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_SERVER_RST);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -280,9 +280,9 @@ TEST(TCP_OPENING_TO_CLOSING, BY_INIT_TIMEOUT)
     // C2S SYN Packet
     build_opening_tcp_session(mgr, sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -338,9 +338,9 @@ TEST(TCP_OPENING_TO_CLOSING, BY_HANDSHAKE_TIMEOUT)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -396,7 +396,7 @@ TEST(TCP_OPENING_TO_CLOSING, BY_DATA_TIMEOUT)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -430,9 +430,9 @@ TEST(TCP_OPENING_TO_CLOSING, BY_DATA_TIMEOUT)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -487,9 +487,9 @@ TEST(TCP_OPENING_TO_CLOSING, BY_C2S_HALF_CLOSED_TIMEOUT)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_CLIENT_FIN);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -544,9 +544,9 @@ TEST(TCP_OPENING_TO_CLOSING, BY_S2C_HALF_CLOSED_TIMEOUT)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_SERVER_FIN);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
diff --git a/src/session/test/gtest_state_udp_init_to_opening_to_active_to_closing.cpp b/src/session/test/gtest_state_udp_init_to_opening_to_active_to_closing.cpp
index a32fdfa..fc4d2e7 100644
--- a/src/session/test/gtest_state_udp_init_to_opening_to_active_to_closing.cpp
+++ b/src/session/test/gtest_state_udp_init_to_opening_to_active_to_closing.cpp
@@ -53,7 +53,7 @@ TEST(UDP_INIT_TO_OPENING_TO_ACTIVE_TO_CLOSING, TEST)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 0, 0, 1, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0);
 
     sleep(1);
     timestamp_update();
@@ -87,9 +87,9 @@ TEST(UDP_INIT_TO_OPENING_TO_ACTIVE_TO_CLOSING, TEST)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 1, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
diff --git a/src/session/test/gtest_state_udp_init_to_opening_to_closing.cpp b/src/session/test/gtest_state_udp_init_to_opening_to_closing.cpp
index b1f86ca..a79ca54 100644
--- a/src/session/test/gtest_state_udp_init_to_opening_to_closing.cpp
+++ b/src/session/test/gtest_state_udp_init_to_opening_to_closing.cpp
@@ -51,9 +51,9 @@ TEST(UDP_INIT_TO_OPENING_TO_CLOSING, BY_C2S)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 0, 0, 1, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -108,9 +108,9 @@ TEST(UDP_INIT_TO_OPENING_TO_CLOSING, BY_S2C)
 
     __session_dispatch(sess);
 
-    __session_manager_check_counter(mgr, 0, 0, 0, 1, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0);
     __session_manager_wait(mgr, CLOSING_BY_TIMEOUT);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
diff --git a/src/session/test/gtest_timeout_tcp_data.cpp b/src/session/test/gtest_timeout_tcp_data.cpp
index d724e3e..2dd0a7e 100644
--- a/src/session/test/gtest_timeout_tcp_data.cpp
+++ b/src/session/test/gtest_timeout_tcp_data.cpp
@@ -26,12 +26,12 @@ TEST(TIMEOUT, TCP_TIMEOUT_DATA)
     sess = session_manager_update_session(mgr, &pkt);
     EXPECT_TRUE(sess);
 
-    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0);
 
     __session_manager_check_tcp_timeout_data(mgr, &config);
     __session_manager_check_tcp_timeout_time_wait(mgr, &config);
 
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
diff --git a/src/session/test/gtest_timeout_tcp_half_closed.cpp b/src/session/test/gtest_timeout_tcp_half_closed.cpp
index 3a81051..0dcc0d0 100644
--- a/src/session/test/gtest_timeout_tcp_half_closed.cpp
+++ b/src/session/test/gtest_timeout_tcp_half_closed.cpp
@@ -26,12 +26,12 @@ TEST(TIMEOUT, TCP_TIMEOUT_HALF_CLOSED1)
     sess = session_manager_update_session(mgr, &pkt);
     EXPECT_TRUE(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     __session_manager_check_tcp_timeout_half_closed(mgr, &config, SESSION_STATE_OPENING);
     __session_manager_check_tcp_timeout_time_wait(mgr, &config);
 
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -70,12 +70,12 @@ TEST(TIMEOUT, TCP_TIMEOUT_HALF_CLOSED2)
     sess = session_manager_update_session(mgr, &pkt);
     EXPECT_TRUE(sess);
 
-    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0);
 
     __session_manager_check_tcp_timeout_half_closed(mgr, &config, SESSION_STATE_ACTIVE);
     __session_manager_check_tcp_timeout_time_wait(mgr, &config);
 
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
diff --git a/src/session/test/gtest_timeout_tcp_handshake.cpp b/src/session/test/gtest_timeout_tcp_handshake.cpp
index 1b87f47..1831bbd 100644
--- a/src/session/test/gtest_timeout_tcp_handshake.cpp
+++ b/src/session/test/gtest_timeout_tcp_handshake.cpp
@@ -19,12 +19,12 @@ TEST(TIMEOUT, TCP_TIMEOUT_HANDSHAKE)
     sess = session_manager_update_session(mgr, &pkt);
     EXPECT_TRUE(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     __session_manager_check_tcp_timeout_handshake(mgr, &config);
     __session_manager_check_tcp_timeout_time_wait(mgr, &config);
 
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
diff --git a/src/session/test/gtest_timeout_tcp_init.cpp b/src/session/test/gtest_timeout_tcp_init.cpp
index 2a7f98f..b0c9de3 100644
--- a/src/session/test/gtest_timeout_tcp_init.cpp
+++ b/src/session/test/gtest_timeout_tcp_init.cpp
@@ -19,12 +19,12 @@ TEST(TIMEOUT, TCP_TIMEOUT_INIT1)
     sess = session_manager_update_session(mgr, &pkt);
     EXPECT_TRUE(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     __session_manager_check_tcp_timeout_init(mgr, &config);
     __session_manager_check_tcp_timeout_time_wait(mgr, &config);
 
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -49,12 +49,12 @@ TEST(TIMEOUT, TCP_TIMEOUT_INIT2)
     sess = session_manager_update_session(mgr, &pkt);
     EXPECT_TRUE(sess);
 
-    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     __session_manager_check_tcp_timeout_init(mgr, &config);
     __session_manager_check_tcp_timeout_time_wait(mgr, &config);
 
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
diff --git a/src/session/test/gtest_timeout_udp_data.cpp b/src/session/test/gtest_timeout_udp_data.cpp
index 6fbab5f..734fd35 100644
--- a/src/session/test/gtest_timeout_udp_data.cpp
+++ b/src/session/test/gtest_timeout_udp_data.cpp
@@ -19,12 +19,12 @@ TEST(TIMEOUT, UDP_TIMEOUT_DATA1)
     sess = session_manager_update_session(mgr, &pkt);
     EXPECT_TRUE(sess);
 
-    __session_manager_check_counter(mgr, 0, 0, 0, 1, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0);
 
     __session_manager_check_udp_timeout_data(mgr, &config, SESSION_STATE_OPENING);
 
     EXPECT_TRUE(session_manager_get_expired_session(mgr) == NULL);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
@@ -56,12 +56,12 @@ TEST(TIMEOUT, UDP_TIMEOUT_DATA2)
     sess = session_manager_update_session(mgr, &pkt);
     EXPECT_TRUE(sess);
 
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 1, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0);
 
     __session_manager_check_udp_timeout_data(mgr, &config, SESSION_STATE_ACTIVE);
 
     EXPECT_TRUE(session_manager_get_expired_session(mgr) == NULL);
-    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+    __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 
     session_manager_destroy(mgr);
 }
diff --git a/src/session/test/test_utils.h b/src/session/test/test_utils.h
index 1825a1d..6211a19 100644
--- a/src/session/test/test_utils.h
+++ b/src/session/test/test_utils.h
@@ -20,6 +20,10 @@ struct session_manager_config config = {
     .max_tcp_session_num = 3,
     .max_udp_session_num = 3,
 
+    // session overload
+    .tcp_overload_evict_old_sess = 1, // 1: evict old session, 0: bypass new session
+    .udp_overload_evict_old_sess = 1, // 1: evict old session, 0: bypass new session
+
     // tcp timeout
     .tcp_timeout_init = 2,
     .tcp_timeout_handshake = 2,
@@ -85,7 +89,9 @@ __attribute__((unused)) static void __session_manager_wait(struct session_manage
 
 __attribute__((unused)) static void __session_manager_check_counter(struct session_manager *mgr,
                                                                     uint64_t tcp_opening_sess_num, uint64_t tcp_active_sess_num, uint64_t tcp_closing_sess_num,
-                                                                    uint64_t udp_opening_sess_num, uint64_t udp_active_sess_num, uint64_t udp_closing_sess_num)
+                                                                    uint64_t udp_opening_sess_num, uint64_t udp_active_sess_num, uint64_t udp_closing_sess_num,
+                                                                    uint64_t tcp_overload_evict_new_sess_num, uint64_t tcp_overload_evict_old_sess_num,
+                                                                    uint64_t udp_overload_evict_new_sess_num, uint64_t udp_overload_evict_old_sess_num)
 {
     struct session_counter counter;
     session_manager_get_session_counter(mgr, &counter);
@@ -99,6 +105,11 @@ __attribute__((unused)) static void __session_manager_check_counter(struct sessi
     EXPECT_TRUE(counter.udp_opening_sess_num == udp_opening_sess_num);
     EXPECT_TRUE(counter.udp_active_sess_num == udp_active_sess_num);
     EXPECT_TRUE(counter.udp_closing_sess_num == udp_closing_sess_num);
+
+    EXPECT_TRUE(counter.tcp_overload_evict_new_sess_num == tcp_overload_evict_new_sess_num);
+    EXPECT_TRUE(counter.tcp_overload_evict_old_sess_num == tcp_overload_evict_old_sess_num);
+    EXPECT_TRUE(counter.udp_overload_evict_new_sess_num == udp_overload_evict_new_sess_num);
+    EXPECT_TRUE(counter.udp_overload_evict_old_sess_num == udp_overload_evict_old_sess_num);
 }
 
 __attribute__((unused)) static void __session_manager_check_tcp_timeout_init(struct session_manager *mgr, struct session_manager_config *config)
@@ -119,7 +130,7 @@ __attribute__((unused)) static void __session_manager_check_tcp_timeout_init(str
             printf("timeout_time: %lu, curr_time: %lu, session expired\n",
                    timeout_time, timestamp_get_sec());
 
-            __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0);
+            __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
             EXPECT_TRUE(sess != NULL);
             break;
         }
@@ -129,7 +140,7 @@ __attribute__((unused)) static void __session_manager_check_tcp_timeout_init(str
                    timeout_time, timestamp_get_sec(), interval);
 
             EXPECT_TRUE(interval <= config->tcp_timeout_init);
-            __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+            __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
             EXPECT_TRUE(sess == NULL);
         }
         sleep(1);
@@ -155,7 +166,7 @@ __attribute__((unused)) static void __session_manager_check_tcp_timeout_handshak
             printf("timeout_time: %lu, curr_time: %lu, session expired\n",
                    timeout_time, timestamp_get_sec());
 
-            __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0);
+            __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
             EXPECT_TRUE(sess != NULL);
             break;
         }
@@ -165,7 +176,7 @@ __attribute__((unused)) static void __session_manager_check_tcp_timeout_handshak
                    timeout_time, timestamp_get_sec(), interval);
 
             EXPECT_TRUE(interval <= config->tcp_timeout_handshake);
-            __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+            __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
             EXPECT_TRUE(sess == NULL);
         }
         sleep(1);
@@ -191,7 +202,7 @@ __attribute__((unused)) static void __session_manager_check_tcp_timeout_data(str
             printf("timeout_time: %lu, curr_time: %lu, session expired\n",
                    timeout_time, timestamp_get_sec());
 
-            __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0);
+            __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
             EXPECT_TRUE(sess != NULL);
             break;
         }
@@ -201,7 +212,7 @@ __attribute__((unused)) static void __session_manager_check_tcp_timeout_data(str
                    timeout_time, timestamp_get_sec(), interval);
 
             EXPECT_TRUE(interval <= config->tcp_timeout_data);
-            __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0);
+            __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0);
             EXPECT_TRUE(sess == NULL);
         }
         sleep(1);
@@ -229,7 +240,7 @@ __attribute__((unused)) static void __session_manager_check_tcp_timeout_half_clo
             printf("timeout_time: %lu, curr_time: %lu, session expired\n",
                    timeout_time, timestamp_get_sec());
 
-            __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0);
+            __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
             EXPECT_TRUE(sess != NULL);
             break;
         }
@@ -241,11 +252,11 @@ __attribute__((unused)) static void __session_manager_check_tcp_timeout_half_clo
             EXPECT_TRUE(interval <= config->tcp_timeout_half_closed);
             if (curr_state == SESSION_STATE_OPENING)
             {
-                __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0);
+                __session_manager_check_counter(mgr, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
             }
             if (curr_state == SESSION_STATE_ACTIVE)
             {
-                __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0);
+                __session_manager_check_counter(mgr, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0);
             }
             EXPECT_TRUE(sess == NULL);
         }
@@ -272,7 +283,7 @@ __attribute__((unused)) static void __session_manager_check_tcp_timeout_time_wai
             printf("timeout_time: %lu, curr_time: %lu, session expired\n",
                    timeout_time, timestamp_get_sec());
 
-            __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0);
+            __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
             EXPECT_TRUE(sess == NULL);
             break;
         }
@@ -282,7 +293,7 @@ __attribute__((unused)) static void __session_manager_check_tcp_timeout_time_wai
                    timeout_time, timestamp_get_sec(), interval);
 
             EXPECT_TRUE(interval <= config->tcp_timeout_init);
-            __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0);
+            __session_manager_check_counter(mgr, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
             EXPECT_TRUE(sess == NULL);
         }
         sleep(1);
@@ -310,7 +321,7 @@ __attribute__((unused)) static void __session_manager_check_udp_timeout_data(str
             printf("timeout_time: %lu, curr_time: %lu, session expired\n",
                    timeout_time, timestamp_get_sec());
 
-            __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 1);
+            __session_manager_check_counter(mgr, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0);
             EXPECT_TRUE(sess != NULL);
             break;
         }
@@ -322,11 +333,11 @@ __attribute__((unused)) static void __session_manager_check_udp_timeout_data(str
             EXPECT_TRUE(interval <= config->udp_timeout_data);
             if (curr_state == SESSION_STATE_OPENING)
             {
-                __session_manager_check_counter(mgr, 0, 0, 0, 1, 0, 0);
+                __session_manager_check_counter(mgr, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0);
             }
             if (curr_state == SESSION_STATE_ACTIVE)
             {
-                __session_manager_check_counter(mgr, 0, 0, 0, 0, 1, 0);
+                __session_manager_check_counter(mgr, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0);
             }
 
             EXPECT_TRUE(sess == NULL);