diff --git a/a8/tcpclient2.cc b/a8/tcpclient2.cc
index 95b1f4f..5636b1e 100644
--- a/a8/tcpclient2.cc
+++ b/a8/tcpclient2.cc
@@ -119,6 +119,7 @@ namespace a8
         if(socket_ == -1){
             return;
         }
+        #if 0
         if (!work_node_) {
             send_buffer_mutex_.lock();
             work_node_ = top_node_;
@@ -129,6 +130,7 @@ namespace a8
         if (work_node_) {
             AsyncSend();
         }
+        #endif
     }
 
     void TcpClient2::DoDisConnect()