diff --git a/a8/ioloop.h b/a8/ioloop.h
index 25730c4..10e4806 100644
--- a/a8/ioloop.h
+++ b/a8/ioloop.h
@@ -1,6 +1,9 @@
 #ifndef A8_IOLOOP_H
 #define A8_IOLOOP_H
 
+#include <a8/a8.h>
+#include <a8/types.h>
+
 namespace a8
 {
 
@@ -13,13 +16,13 @@ namespace a8
     public:
         void Init();
         void UnInit();
+        volatile int epoll_fd = a8::INVALID_FD;
 
     private:
         void WorkerThreadProc();
 
     private:
         int max_client_num_ = 1000;
-        volatile int epoll_fd = a8::INVALID_FD;
         volatile bool worker_thread_shutdown_ = false;
         std::thread* worker_thread_ = nullptr;
     };
diff --git a/a8/tcpclient2.cc b/a8/tcpclient2.cc
index 5636b1e..b4fb83c 100644
--- a/a8/tcpclient2.cc
+++ b/a8/tcpclient2.cc
@@ -12,6 +12,7 @@
 
 #include <a8/a8.h>
 #include <a8/tcpclient2.h>
+#include <a8/ioloop.h>
 
 static const int DEFAULT_MAX_PACKET_LEN = 1024 * 10;
 static const int DEFAULT_MAX_RECV_BUFFERSIZE = 1024 * 64;
@@ -21,6 +22,7 @@ namespace a8
     TcpClient2::TcpClient2()
     {
         send_buffer_mutex_ = new std::mutex();
+        epoll_fd = a8::IoLoop::Instance()->epoll_fd;
     }
 
     TcpClient2::~TcpClient2()
@@ -116,21 +118,24 @@ namespace a8
 
     void TcpClient2::DoSend()
     {
+        if (!connected_) {
+            if (on_connect) {
+                on_connect(this);
+            }
+        }
         if(socket_ == -1){
             return;
         }
-        #if 0
         if (!work_node_) {
-            send_buffer_mutex_.lock();
+            send_buffer_mutex_->lock();
             work_node_ = top_node_;
             top_node_ = nullptr;
             bot_node_ = nullptr;
-            send_buffer_mutex_.unlock();
+            send_buffer_mutex_->unlock();
         }
         if (work_node_) {
             AsyncSend();
         }
-        #endif
     }
 
     void TcpClient2::DoDisConnect()
@@ -214,13 +219,56 @@ namespace a8
     void TcpClient2::NotifyEpollSend()
     {
         sending_ = true;
-        #if 0
         struct epoll_event ev;
         ev.data.fd = socket_;
         ev.events = EPOLLIN | EPOLLOUT | EPOLLRDHUP;
         ev.data.ptr = this;
         ::epoll_ctl(epoll_fd, EPOLL_CTL_MOD, socket_, &ev);
-        #endif
+    }
+
+    void TcpClient2::AsyncSend()
+    {
+        while (work_node_) {
+            int sentbytes = ::send(socket_,
+                                   work_node_->buff + work_node_->sent_bytes,
+                                   work_node_->bufflen - work_node_->sent_bytes,
+                                   0);
+            if (sentbytes <= 0) {
+                auto err_code = errno;
+                if (err_code == EAGAIN || err_code == EWOULDBLOCK) {
+                    break;
+                } else {
+                    Close();
+                    break;
+                }
+            }
+            work_node_->sent_bytes += sentbytes;
+            if (work_node_->sent_bytes >= work_node_->bufflen) {
+                a8::SendQueueNode *pdelnode = work_node_;
+                work_node_ = work_node_->next;
+                if (!work_node_) {
+                    send_buffer_mutex_->lock();
+                    if (top_node_) {
+                        work_node_ = top_node_;
+                        top_node_ = nullptr;
+                        bot_node_ = nullptr;
+                    }
+                    if (!work_node_) {
+                        sending_ = false;
+                        struct epoll_event ev;
+                        ev.data.fd = socket_;
+                        ev.events = EPOLLIN | EPOLLRDHUP;
+                        ev.data.ptr = this;
+                        ::epoll_ctl(epoll_fd, EPOLL_CTL_MOD, socket_, &ev);
+                    }
+                    send_buffer_mutex_->unlock();
+                }
+                if (pdelnode->buff) {
+                    free(pdelnode->buff);
+                }
+                free(pdelnode);
+            }
+        }
     }
 
 }
diff --git a/a8/tcpclient2.h b/a8/tcpclient2.h
index 2db684e..8a61f6e 100644
--- a/a8/tcpclient2.h
+++ b/a8/tcpclient2.h
@@ -28,17 +28,20 @@ namespace a8
         void DoDisConnect();
 
     private:
+        volatile int epoll_fd = a8::INVALID_FD;
         volatile int socket_ = a8::INVALID_SOCKET;
         volatile bool sending_ = false;
         volatile bool connected_ = false;
         std::mutex* send_buffer_mutex_ = nullptr;
         SendQueueNode *top_node_ = nullptr;
         SendQueueNode *bot_node_ = nullptr;
+        SendQueueNode *work_node_ = nullptr;
 
         void SetActive(bool active);
         bool ActiveStart();
         void ActiveStop();
         void NotifyEpollSend();
+        void AsyncSend();
     };
 }