diff --git a/a8/ioloop.cc b/a8/ioloop.cc
index 7e7c1ec..a251f91 100644
--- a/a8/ioloop.cc
+++ b/a8/ioloop.cc
@@ -12,19 +12,22 @@
 
 #include <a8/ioloop.h>
 
-void IoLoop::Init()
+namespace a8
 {
-    epoll_fd = ::epoll_create(10000);
-    assert(epoll_fd != a8::INVALID_FD);
-}
+    void IoLoop::Init()
+    {
+        epoll_fd = ::epoll_create(10000);
+        assert(epoll_fd != a8::INVALID_FD);
+    }
 
-void IoLoop::UnInit()
-{
-    ::close(epoll_fd);
-    epoll_fd = a8::INVALID_FD;
-}
+    void IoLoop::UnInit()
+    {
+        ::close(epoll_fd);
+        epoll_fd = a8::INVALID_FD;
+    }
 
-void IoLoop::Update()
-{
+    void IoLoop::Update()
+    {
 
+    }
 }
diff --git a/a8/tcpclient2.cc b/a8/tcpclient2.cc
index 1342e38..550b104 100644
--- a/a8/tcpclient2.cc
+++ b/a8/tcpclient2.cc
@@ -51,7 +51,7 @@ namespace a8
 
     bool TcpClient2::IsActive()
     {
-        return socket__ != a8::INVALID_SOCKET;
+        return socket_ != a8::INVALID_SOCKET;
     }
 
     bool TcpClient2::Connected()
diff --git a/a8/tcpclient2.h b/a8/tcpclient2.h
index 783b9cf..4a91ab2 100644
--- a/a8/tcpclient2.h
+++ b/a8/tcpclient2.h
@@ -6,15 +6,15 @@ namespace a8
     class TcpClient2
     {
     public:
-        std::function<void (a8::TcpClient*, int)> on_error;
-        std::function<void (a8::TcpClient*)> on_connect;
-        std::function<void (a8::TcpClient*)> on_disconnect;
-        std::function<void (a8::TcpClient*, char*, unsigned int)> on_socketread;
+        std::function<void (a8::TcpClient2*, int)> on_error;
+        std::function<void (a8::TcpClient2*)> on_connect;
+        std::function<void (a8::TcpClient2*)> on_disconnect;
+        std::function<void (a8::TcpClient2*, char*, unsigned int)> on_socketread;
         std::string remote_address;
         int remote_port = 0;
 
-        TcpClient();
-        virtual ~TcpClient();
+        TcpClient2();
+        virtual ~TcpClient2();
 
         void Open();
         void Close();
@@ -25,6 +25,7 @@ namespace a8
     private:
         volatile int socket_ = a8::INVALID_SOCKET;
         volatile bool connected_ = false;
+        std::mutex* send_buffer_mutex_ = nullptr;
         SendQueueNode *top_node_ = nullptr;
         SendQueueNode *bot_node_ = nullptr;
         std::mutex *send_cond_mutex_ = nullptr;
@@ -33,6 +34,7 @@ namespace a8
         void SetActive(bool active);
         bool ActiveStart();
         void ActiveStop();
+        void NotifySendCond();
     };
 }