diff --git a/client/tp_assist_macos/src/csrc/ts_http_rpc.cpp b/client/tp_assist_macos/src/csrc/ts_http_rpc.cpp
index 65220e2..df8706f 100644
--- a/client/tp_assist_macos/src/csrc/ts_http_rpc.cpp
+++ b/client/tp_assist_macos/src/csrc/ts_http_rpc.cpp
@@ -609,7 +609,7 @@ void TsHttpRpc::_rpc_func_run_client(const ex_astr& func_args, ex_astr& buf)
 		// SSH
 		//==============================================
 
-		if (pro_sub == TP_PROTOCOL_SUB_TYPE_SSH)
+		if (pro_sub == TP_PROTOCOL_TYPE_SSH_SHELL)
 		{
 			char szCmd[1024] = {0};
 			ex_strformat(szCmd, 1023, "ssh %s@%s -p %d", sid.c_str(), teleport_ip.c_str(), teleport_port);
diff --git a/server/tp_core/core/ts_main.cpp b/server/tp_core/core/ts_main.cpp
index 686dc6d..15af5d2 100644
--- a/server/tp_core/core/ts_main.cpp
+++ b/server/tp_core/core/ts_main.cpp
@@ -85,7 +85,6 @@ bool tpp_session_begin(const TPP_CONNECT_INFO* info, int* db_id)
 	sinfo.conn_port = info->conn_port;
 	sinfo.protocol_type = info->protocol_type;
 	sinfo.protocol_sub_type = info->protocol_sub_type;
-	//sinfo.protocol_flag = info->protocol_flag;
 	sinfo.auth_type = info->auth_type;
 
 	return ts_web_rpc_session_begin(sinfo, *db_id);
diff --git a/server/tp_core/core/ts_session.h b/server/tp_core/core/ts_session.h
index efc9040..8d39af5 100644
--- a/server/tp_core/core/ts_session.h
+++ b/server/tp_core/core/ts_session.h
@@ -8,6 +8,9 @@
 
 typedef struct TS_CONNECT_INFO
 {
+	// TODO:
+	//TPP_CONNECT_INFO conn;
+
 	ex_astr sid;
 
 	// 与此连接信息相关的三个要素的ID
@@ -36,7 +39,7 @@ typedef struct TS_CONNECT_INFO
 	ex_u64 ticket_start;// 此连接信息的创建时间（用于超时未使用就销毁的功能）
 }TS_CONNECT_INFO;
 
-typedef std::map<ex_astr, TS_CONNECT_INFO*> ts_connections;
+typedef std::map<ex_astr, TS_CONNECT_INFO*> ts_connections;  // sid -> TS_CONNECT_INFO
 
 class TsSessionManager : public ExThreadBase
 {
@@ -44,8 +47,21 @@ public:
 	TsSessionManager();
 	~TsSessionManager();
 
+	// generate a sid for connection info.
 	bool request_session(ex_astr& sid, TS_CONNECT_INFO* info);
 
+	// +ref for connection-info.
+	bool session_connect(const ex_astr& sid, TPP_CONNECT_INFO** info);
+
+	// free connection-info created by session_connect().
+	bool free_connect_info(TPP_CONNECT_INFO* info);
+
+	// -ref for connecton-info, and release it when ref is 0.
+	bool session_end(const ex_astr& sid);
+
+	// TODO:
+	void timer();
+
 	// 根据sid得到session信息
 	bool get_connect_info(const ex_astr& sid, TS_CONNECT_INFO& info);
 
diff --git a/server/tp_core/protocol/ssh/ssh_proxy.cpp b/server/tp_core/protocol/ssh/ssh_proxy.cpp
index 3bb731e..789080e 100644
--- a/server/tp_core/protocol/ssh/ssh_proxy.cpp
+++ b/server/tp_core/protocol/ssh/ssh_proxy.cpp
@@ -25,7 +25,7 @@ SshProxy::~SshProxy()
 	m_sftp_sessions.clear();
 }
 
-bool SshProxy::init(void)
+bool SshProxy::init()
 {
 	m_host_ip = g_ssh_env.bind_ip;
 	m_host_port = g_ssh_env.bind_port;
@@ -69,9 +69,8 @@ bool SshProxy::init(void)
 	return true;
 }
 
-void SshProxy::timer(void) {
+void SshProxy::timer() {
 	// be called per one second.
-	// EXLOGV("[ssh] on-timer.\n");
 	m_timer_counter++;
 	if(m_timer_counter < 5)
 		return;
@@ -86,14 +85,14 @@ void SshProxy::timer(void) {
 	}
 }
 
-void SshProxy::_thread_loop(void)
+void SshProxy::_thread_loop()
 {
 	EXLOGV("[ssh] TeleportServer-SSH ready on %s:%d\n", m_host_ip.c_str(), m_host_port);
 	_run();
 	EXLOGV("[ssh] main-loop end.\n");
 }
 
-void SshProxy::_set_stop_flag(void)
+void SshProxy::_set_stop_flag()
 {
 	m_stop_flag = true;
 
@@ -108,8 +107,8 @@ void SshProxy::_set_stop_flag(void)
 		ssh_options_set(_session, SSH_OPTIONS_HOST, host_ip.c_str());
 		ssh_options_set(_session, SSH_OPTIONS_PORT, &m_host_port);
 
-		int _timeout_us = 100000;
-		ssh_options_set(_session, SSH_OPTIONS_TIMEOUT_USEC, &_timeout_us);
+		int _timeout_us = 10;
+		ssh_options_set(_session, SSH_OPTIONS_TIMEOUT, &_timeout_us);
 		ssh_connect(_session);
 		ssh_free(_session);
 	}
@@ -117,7 +116,7 @@ void SshProxy::_set_stop_flag(void)
 	m_thread_mgr.stop_all();
 }
 
-void SshProxy::_run(void)
+void SshProxy::_run()
 {
 	for (;;)
 	{
@@ -172,7 +171,7 @@ void SshProxy::_run(void)
 	m_thread_mgr.stop_all();
 }
 
-void SshProxy::_dump_sftp_sessions(void)
+void SshProxy::_dump_sftp_sessions()
 {
 	ts_sftp_sessions::iterator it = m_sftp_sessions.begin();
 	for (; it != m_sftp_sessions.end(); ++it)
diff --git a/server/tp_core/protocol/ssh/ssh_proxy.h b/server/tp_core/protocol/ssh/ssh_proxy.h
index 3452bb7..5d0cff0 100644
--- a/server/tp_core/protocol/ssh/ssh_proxy.h
+++ b/server/tp_core/protocol/ssh/ssh_proxy.h
@@ -25,8 +25,8 @@ public:
 	SshProxy();
 	~SshProxy();
 
-	bool init(void);
-	void timer(void);
+	bool init();
+	void timer();
 
 	void add_sftp_session_info(
 		const ex_astr& sid,
@@ -42,13 +42,13 @@ public:
 	void session_finished(SshSession* sess);
 
 protected:
-	void _thread_loop(void);
-	void _set_stop_flag(void);
+	void _thread_loop();
+	void _set_stop_flag();
 
-	void _run(void);
+	void _run();
 
 private:
-	void _dump_sftp_sessions(void);
+	void _dump_sftp_sessions();
 
 private:
 	ssh_bind m_bind;