feature: add debug_plugin for development debugging

src/session/session_utils.h

@@ -6,6 +6,7 @@ extern "C"
 #endif
 
 #include <stdint.h>
+#include <stdio.h>
 
 #include "stellar/session.h"
 
@@ -131,8 +132,16 @@ const char *session_state_to_str(enum session_state state);
 const char *session_type_to_str(enum session_type type);
 const char *flow_direction_to_str(enum flow_direction dir);
 
-int session_to_json(struct session *sess, char *buff, int size);
-void session_print(struct session *sess);
+// bref : 1, output session bref info
+// bref : 0, output session detail info
+int session_to_str(const struct session *sess, int bref, char *buff, int size);
+
+static inline void session_print(const struct session *sess)
+{
+    char buff[4096];
+    session_to_str(sess, 0, buff, sizeof(buff));
+    printf("%s\n", buff);
+}
 
 #ifdef __cplusplus
 }