diff --git a/server/wsproxy/mastersvr.cc b/server/wsproxy/mastersvr.cc
index 2073b66..fe9c160 100644
--- a/server/wsproxy/mastersvr.cc
+++ b/server/wsproxy/mastersvr.cc
@@ -6,6 +6,8 @@
 #include "ss_msgid.pb.h"
 #include "mastersvr.h"
 #include <a8/tcpclient.h>
+#include <a8/asynctcpclient.h>
+#include <a8/ioloop.h>
 #include <a8/udplog.h>
 #include <a8/timer.h>
 #include "app.h"
@@ -21,7 +23,11 @@ void MasterSvr::Init(int instance_id, const std::string& remote_ip, int remote_p
     recv_bufflen_ = 0;
     last_pong_tick = a8::XGetTickCount();
     recv_buff_ = (char*) malloc(PACK_MAX * 2);
+#if ASYNC_TCPCLIENT
+    tcp_client_ = a8::IoLoop::Instance()->CreateAsyncTcpClient();
+#else
     tcp_client_ = new a8::TcpClient();
+#endif
     tcp_client_->remote_address = remote_ip;
     tcp_client_->remote_port = remote_port;
     tcp_client_->on_error = std::bind(&MasterSvr::on_error, this, std::placeholders::_1, std::placeholders::_2);
@@ -42,7 +48,11 @@ void MasterSvr::UnInit()
     a8::Timer::Instance()->DeleteTimer(timer_);
     timer_ = nullptr;
     tcp_client_->Close();
+#if ASYNC_TCPCLIENT
+    a8::IoLoop::Instance()->DestoryAsyncTcpClient(tcp_client_);
+#else
     delete tcp_client_;
+#endif
     tcp_client_ = nullptr;
     recv_bufflen_ = 0;
     free(recv_buff_);
@@ -64,7 +74,11 @@ bool MasterSvr::Connected()
     return tcp_client_->Connected();
 }
 
+#if ASYNC_TCPCLIENT
+void MasterSvr::on_error(a8::AsyncTcpClient* sender, int errorId)
+#else
 void MasterSvr::on_error(a8::TcpClient* sender, int errorId)
+#endif
 {
     a8::UdpLog::Instance()->Error("MasterSvr errorid=%d remote_ip:%s remote_port:%d",
                                   {
@@ -74,13 +88,21 @@ void MasterSvr::on_error(a8::TcpClient* sender, int errorId)
                                   });
 }
 
+#if ASYNC_TCPCLIENT
+void MasterSvr::on_connect(a8::AsyncTcpClient* sender)
+#else
 void MasterSvr::on_connect(a8::TcpClient* sender)
+#endif
 {
     recv_bufflen_ = 0;
     a8::UdpLog::Instance()->Info("masterserver connected", {});
 }
 
+#if ASYNC_TCPCLIENT
+void MasterSvr::on_disconnect(a8::AsyncTcpClient* sender)
+#else
 void MasterSvr::on_disconnect(a8::TcpClient* sender)
+#endif
 {
     recv_bufflen_ = 0;
     a8::UdpLog::Instance()->Info("masterserver %d disconnected after 10s later reconnect", {instance_id});
@@ -90,7 +112,11 @@ void MasterSvr::on_disconnect(a8::TcpClient* sender)
                               );
 }
 
+#if ASYNC_TCPCLIENT
+void MasterSvr::on_socketread(a8::AsyncTcpClient* sender, char* buf, unsigned int len)
+#else
 void MasterSvr::on_socketread(a8::TcpClient* sender, char* buf, unsigned int len)
+#endif
 {
     #if 0
     ++App::Instance()->perf.read_count;
diff --git a/server/wsproxy/mastersvr.h b/server/wsproxy/mastersvr.h
index 49d445b..ef9be25 100644
--- a/server/wsproxy/mastersvr.h
+++ b/server/wsproxy/mastersvr.h
@@ -5,6 +5,7 @@
 namespace a8
 {
     class TcpClient;
+    class AsyncTcpClient;
 }
 
 struct timer_list;
@@ -32,16 +33,27 @@ class MasterSvr
     }
 
  private:
+    #if ASYNC_TCPCLIENT
+    void on_error(a8::AsyncTcpClient* sender, int errorId);
+    void on_connect(a8::AsyncTcpClient* sender);
+    void on_disconnect(a8::AsyncTcpClient* sender);
+    void on_socketread(a8::AsyncTcpClient* sender, char* buf, unsigned int len);
+    #else
     void on_error(a8::TcpClient* sender, int errorId);
     void on_connect(a8::TcpClient* sender);
     void on_disconnect(a8::TcpClient* sender);
     void on_socketread(a8::TcpClient* sender, char* buf, unsigned int len);
+    #endif
 
     void CheckAlive();
 
  private:
     char *recv_buff_ = nullptr;
     unsigned int recv_bufflen_ = 0;
+    #if ASYNC_TCPCLIENT
+    a8::AsyncTcpClient* tcp_client_ = nullptr;
+    #else
     a8::TcpClient* tcp_client_ = nullptr;
+    #endif
     timer_list* timer_ = nullptr;
 };
diff --git a/third_party/a8engine b/third_party/a8engine
index f9f17a6..6735810 160000
--- a/third_party/a8engine
+++ b/third_party/a8engine
@@ -1 +1 @@
-Subproject commit f9f17a60fbef4174c2dd8ae406f742371b62421f
+Subproject commit 67358105a4e2301c48f351d02fde1c59ef8a4a3e
diff --git a/third_party/framework b/third_party/framework
index 6210196..9ba2696 160000
--- a/third_party/framework
+++ b/third_party/framework
@@ -1 +1 @@
-Subproject commit 6210196bcda13489e2f691aa001de042ae61d9cb
+Subproject commit 9ba2696e52664c9f5b7a1e09a4a5516359d330b0