diff --git a/a8/asiotcpclient.cc b/a8/asiotcpclient.cc
index f9e2d0e..5233a21 100644
--- a/a8/asiotcpclient.cc
+++ b/a8/asiotcpclient.cc
@@ -26,7 +26,6 @@ namespace a8
              );
         send_buffer_mutex_ = std::make_shared<std::mutex>();
         io_context_ = std::make_shared<asio::io_context>();
-        resolver_ = std::make_shared<asio::ip::tcp::resolver>(*io_context_);
         socket_ = std::make_shared<asio::ip::tcp::socket>(*io_context_);
         new std::thread(&AsioTcpClient::WorkerThreadProc, this);
     }
@@ -98,15 +97,12 @@ namespace a8
     {
         actived_ = true;
         connected_ = false;
-
-        #if 0
-        asio::async_connect(*socket_, endpoints,
-                            [this] (const asio::error_code& ec,
-                                    const tcp::endpoint& endpoint)
-                            {
-                                HandleConnect(ec, endpoint);
-                            });
-        #endif
+        socket_->async_connect
+            (*endpoint_,
+             [this] (const asio::error_code& ec)
+             {
+                 HandleConnect(ec);
+             });
     }
 
     void AsioTcpClient::ActiveStop()
@@ -115,7 +111,7 @@ namespace a8
         connected_ = false;
     }
 
-    void AsioTcpClient::HandleConnect(const asio::error_code& err, const tcp::endpoint& endpoint)
+    void AsioTcpClient::HandleConnect(const asio::error_code& err)
     {
         if (err) {
             actived_ = false;
@@ -193,6 +189,7 @@ namespace a8
         while (true) {
             try {
                 io_context_->run();
+                io_context_->reset();
                 int i = 0;
             }  catch (std::exception& e) {
                 std::cerr << "Exception: " << e.what() << "\n";
diff --git a/a8/asiotcpclient.h b/a8/asiotcpclient.h
index 8197a90..a676003 100644
--- a/a8/asiotcpclient.h
+++ b/a8/asiotcpclient.h
@@ -28,7 +28,7 @@ namespace a8
         void SendBuff(const char* buff, unsigned int bufflen);
 
     private:
-        void HandleConnect(const asio::error_code& err, const tcp::endpoint& endpoint);
+        void HandleConnect(const asio::error_code& err);
         void DoRead();
         void DoSend();
         void WorkerThreadProc();
@@ -39,7 +39,6 @@ namespace a8
 
         std::shared_ptr<asio::ip::tcp::endpoint> endpoint_;
         std::shared_ptr<asio::io_context> io_context_;
-        std::shared_ptr<asio::ip::tcp::resolver> resolver_;
         std::shared_ptr<asio::ip::tcp::socket> socket_;
         volatile bool actived_ = false;
         volatile bool connected_ = false;