diff --git a/third_party/f8/f8/CMakeLists.txt b/third_party/f8/f8/CMakeLists.txt
index fb18b62..190bdb4 100644
--- a/third_party/f8/f8/CMakeLists.txt
+++ b/third_party/f8/f8/CMakeLists.txt
@@ -28,4 +28,8 @@ aux_source_directory(.
   F8_SRC_LIST
 )
 
+aux_source_directory(./internal
+  F8_SRC_LIST
+)
+
 add_library(f8 STATIC ${F8_SRC_LIST})
diff --git a/third_party/f8/f8/internal/asiotcpclient.cc b/third_party/f8/f8/internal/asiotcpclient.cc
new file mode 100644
index 0000000..bbd2152
--- /dev/null
+++ b/third_party/f8/f8/internal/asiotcpclient.cc
@@ -0,0 +1,217 @@
+#include <f8/internal/pch.h>
+
+#include <string.h>
+#include <assert.h>
+
+#include <f8/internal/asiotcpclient.h>
+#include <f8/iomgr.h>
+
+const int MAX_RECV_BUFFERSIZE = 1024 * 64;
+
+namespace f8
+{
+
+    namespace internal
+    {
+
+        AsioTcpClient::AsioTcpClient(std::shared_ptr<asio::io_context> io_context,
+                                     const std::string& remote_ip,
+                                     int remote_port)
+        {
+            Init(io_context, remote_ip, remote_port);
+        }
+
+        AsioTcpClient::AsioTcpClient(const std::string& remote_ip, int remote_port)
+        {
+            Init(f8::IoMgr::Instance()->GetIoContext(0), remote_ip, remote_port);
+        }
+
+        void AsioTcpClient::Init(std::shared_ptr<asio::io_context> io_context,
+                                 const std::string& remote_ip,
+                                 int remote_port)
+        {
+            io_context_ = io_context;
+            remote_address_ = remote_ip;
+            remote_port_ = remote_port;
+            endpoint_ = std::make_shared<asio::ip::tcp::endpoint>
+                (
+                 asio::ip::address::from_string(remote_address_),
+                 remote_port_
+                 );
+            send_buffer_mutex_ = std::make_shared<std::mutex>();
+            socket_ = std::make_shared<asio::ip::tcp::socket>(*io_context);
+        }
+
+        AsioTcpClient::~AsioTcpClient()
+        {
+            Close();
+        }
+
+        void AsioTcpClient::Open()
+        {
+            if (!IsActive()) {
+                SetActive(true);
+            }
+        }
+
+        void AsioTcpClient::Close()
+        {
+            if (IsActive()) {
+                SetActive(false);
+            }
+        }
+
+        bool AsioTcpClient::IsActive()
+        {
+            return actived_;
+        }
+
+        bool AsioTcpClient::Connected()
+        {
+            return connected_;
+        }
+
+        void AsioTcpClient::SendBuff(const char* buff, unsigned int bufflen)
+        {
+            //a8::XPrintf("SendBuff bufflen:%d\n", {bufflen});
+            if (bufflen > 0) {
+                a8::SendQueueNode* p = (a8::SendQueueNode*)malloc(sizeof(a8::SendQueueNode));
+                memset(p, 0, sizeof(a8::SendQueueNode));
+                p->buff = (char*)malloc(bufflen);
+                memmove(p->buff, buff, bufflen);
+                p->bufflen = bufflen;
+                send_buffer_mutex_->lock();
+                if (bot_node_) {
+                    bot_node_->next = p;
+                    bot_node_ = p;
+                }else{
+                    top_node_ = p;
+                    bot_node_ = p;
+                }
+                send_buffer_mutex_->unlock();
+                DoSend();
+            }
+        }
+
+        void AsioTcpClient::SetActive(bool active)
+        {
+            if (active) {
+                if (!IsActive()) {
+                    ActiveStart();
+                }
+            } else {
+                if (IsActive()) {
+                    ActiveStop();
+                }
+            }
+        }
+
+        void AsioTcpClient::ActiveStart()
+        {
+            actived_ = true;
+            connected_ = false;
+            socket_->async_connect
+                (*endpoint_,
+                 [this] (const asio::error_code& ec)
+                 {
+                     HandleConnect(ec);
+                 });
+        }
+
+        void AsioTcpClient::ActiveStop()
+        {
+            actived_ = true;
+            connected_ = false;
+        }
+
+        void AsioTcpClient::HandleConnect(const asio::error_code& err)
+        {
+            if (err) {
+                actived_ = false;
+                connected_ = false;
+                if (on_error) {
+                    on_error(this, err.value());
+                }
+                return;
+            } else {
+                connected_ = true;
+                if (on_connect) {
+                    on_connect(this);
+                }
+                DoRead();
+            }
+        }
+
+        void AsioTcpClient::DoRead()
+        {
+            socket_->async_read_some
+                (asio::buffer(buffer_),
+                 [this](std::error_code ec, std::size_t bytes_transferred)
+                 {
+                     if (!ec) {
+                         if (on_socketread) {
+                             on_socketread(this, buffer_.data(), bytes_transferred);
+                         }
+                         DoRead();
+                     } else {
+                         a8::XPrintf("DoRead error %s\n", {ec.message()});
+                         actived_ = false;
+                         connected_ = false;
+                         if (on_disconnect) {
+                             on_disconnect(this, ec.value());
+                         }
+                     }
+                 });
+        }
+
+        void AsioTcpClient::DoSend()
+        {
+            if (!work_node_) {
+                send_buffer_mutex_->lock();
+                work_node_ = top_node_;
+                top_node_ = nullptr;
+                bot_node_ = nullptr;
+                send_buffer_mutex_->unlock();
+            }
+            if (work_node_ && !sending_) {
+                sending_ = true;
+                char* buf = work_node_->buff + work_node_->sent_bytes;
+                int buf_len = work_node_->bufflen - work_node_->sent_bytes;
+                asio::async_write
+                    (*socket_,
+asio::buffer(buf, buf_len),
+                                         [this] (const asio::error_code& ec, std::size_t bytes_transferred)
+                                         {
+                                             if (!ec) {
+                                                 send_buffer_mutex_->lock();
+                                                 if (work_node_) {
+                                                     work_node_->sent_bytes += bytes_transferred;
+                                                     if (work_node_->sent_bytes >= work_node_->bufflen) {
+                                                         auto pdelnode = work_node_;
+                                                         work_node_ = work_node_->next;
+                                                         free(pdelnode->buff);
+                                                         free((void*)pdelnode);
+                                                     }
+                                                     if (!work_node_) {
+                                                         sending_ = false;
+                                                     }
+                                                     send_buffer_mutex_->unlock();
+                                                     DoSend();
+                                                     return;
+                                                 }
+                                                 send_buffer_mutex_->unlock();
+                                             } else {
+                                                 a8::XPrintf("DoSend error %s\n", {ec.message()});
+                                                 actived_ = false;
+                                                 connected_ = false;
+                                                 if (on_disconnect) {
+                                                     on_disconnect(this, ec.value());
+                                                 }
+                                             }
+                                         });
+
+          }
+         }
+
+    }
+}
diff --git a/third_party/f8/f8/internal/asiotcpclient.h b/third_party/f8/f8/internal/asiotcpclient.h
new file mode 100644
index 0000000..2a44f81
--- /dev/null
+++ b/third_party/f8/f8/internal/asiotcpclient.h
@@ -0,0 +1,65 @@
+#pragma once
+
+#include <asio.hpp>
+
+using asio::ip::tcp;
+
+namespace f8
+{
+    namespace internal
+    {
+
+        class AsioTcpClient
+        {
+        public:
+            std::function<void (f8::internal::AsioTcpClient*, int)> on_error;
+            std::function<void (f8::internal::AsioTcpClient*)> on_connect;
+            std::function<void (f8::internal::AsioTcpClient*, int)> on_disconnect;
+            std::function<void (f8::internal::AsioTcpClient*, char*, unsigned int)> on_socketread;
+
+            AsioTcpClient(std::shared_ptr<asio::io_context> io_context,
+                          const std::string& remote_ip,
+                          int remote_port);
+            AsioTcpClient(const std::string& remote_ip, int remote_port);
+            virtual ~AsioTcpClient();
+            const std::string& GetRemoteAddress() { return remote_address_; }
+            int GetRemotePort() { return remote_port_; }
+
+            void Open();
+            void Close();
+            bool IsActive();
+            bool Connected();
+            void SendBuff(const char* buff, unsigned int bufflen);
+
+        private:
+            void Init(std::shared_ptr<asio::io_context> io_context,
+                      const std::string& remote_ip,
+                      int remote_port);
+            void HandleConnect(const asio::error_code& err);
+            void DoRead();
+            void DoSend();
+
+        private:
+            std::shared_ptr<asio::io_context> io_context_;
+            std::string remote_address_;
+            int remote_port_ = 0;
+
+            std::shared_ptr<asio::ip::tcp::endpoint> endpoint_;
+            std::shared_ptr<asio::ip::tcp::socket> socket_;
+            volatile bool actived_ = false;
+            volatile bool connected_ = false;
+            std::shared_ptr<std::mutex> send_buffer_mutex_;
+            a8::SendQueueNode *top_node_ = nullptr;
+            a8::SendQueueNode *bot_node_ = nullptr;
+            volatile a8::SendQueueNode *work_node_ = nullptr;
+            volatile bool sending_ = false;
+            std::array<char, 1024 * 64> buffer_;
+
+            void SetActive(bool active);
+            void ActiveStart();
+            void ActiveStop();
+        };
+
+    }
+
+}
diff --git a/third_party/f8/f8/iomgr.h b/third_party/f8/f8/iomgr.h
index 88cad8c..6e230d8 100644
--- a/third_party/f8/f8/iomgr.h
+++ b/third_party/f8/f8/iomgr.h
@@ -13,9 +13,9 @@ namespace f8
         void Init();
         void UnInit();
         void Update();
+        std::shared_ptr<asio::io_context> GetIoContext(int type);
 
     private:
-        std::shared_ptr<asio::io_context> GetIoContext(int type);
         void WorkerThreadProc(std::shared_ptr<asio::io_context> io_context);
 
     private:
diff --git a/third_party/f8/f8/libf8.a b/third_party/f8/f8/libf8.a
index 32b00d7..34f9d7c 100644
Binary files a/third_party/f8/f8/libf8.a and b/third_party/f8/f8/libf8.a differ
diff --git a/third_party/f8/f8/tcpclient.cc b/third_party/f8/f8/tcpclient.cc
index 28520f3..107d5c6 100644
--- a/third_party/f8/f8/tcpclient.cc
+++ b/third_party/f8/f8/tcpclient.cc
@@ -1,213 +1,39 @@
 #include <f8/internal/pch.h>
 
-#include <string.h>
-#include <assert.h>
-
 #include <f8/tcpclient.h>
-#include <f8/iomgr.h>
-
-const int MAX_RECV_BUFFERSIZE = 1024 * 64;
+#include <f8/internal/asiotcpclient.h>
 
 namespace f8
 {
 
-    TcpClient::TcpClient(std::shared_ptr<asio::io_context> io_context,
-                         const std::string& remote_ip,
-                         int remote_port)
-    {
-        Init(io_context, remote_ip, remote_port);
-    }
-
     TcpClient::TcpClient(const std::string& remote_ip, int remote_port)
     {
-        Init(f8::IoMgr::Instance()->GetIoContext(0), remote_ip, remote_port);
-    }
-
-    void TcpClient::Init(std::shared_ptr<asio::io_context> io_context,
-                         const std::string& remote_ip,
-                         int remote_port)
-    {
-        io_context_ = io_context;
-        remote_address_ = remote_ip;
-        remote_port_ = remote_port;
-        endpoint_ = std::make_shared<asio::ip::tcp::endpoint>
-            (
-             asio::ip::address::from_string(remote_address_),
-             remote_port_
-             );
-        send_buffer_mutex_ = std::make_shared<std::mutex>();
-        socket_ = std::make_shared<asio::ip::tcp::socket>(*io_context);
+        impl_ = std::make_shared<TcpClientImpl>(remote_ip, remote_port);
     }
 
     TcpClient::~TcpClient()
     {
-        Close();
+        impl_->Close();
     }
 
     void TcpClient::Open()
     {
-        if (!IsActive()) {
-            SetActive(true);
-        }
+        impl_->Open();
     }
 
     void TcpClient::Close()
     {
-        if (IsActive()) {
-            SetActive(false);
-        }
-    }
-
-    bool TcpClient::IsActive()
-    {
-        return actived_;
+        impl_->Close();
     }
 
     bool TcpClient::Connected()
     {
-        return connected_;
+        return impl_->Connected();
     }
 
     void TcpClient::SendBuff(const char* buff, unsigned int bufflen)
     {
-        //a8::XPrintf("SendBuff bufflen:%d\n", {bufflen});
-        if (bufflen > 0) {
-            a8::SendQueueNode* p = (a8::SendQueueNode*)malloc(sizeof(a8::SendQueueNode));
-            memset(p, 0, sizeof(a8::SendQueueNode));
-            p->buff = (char*)malloc(bufflen);
-            memmove(p->buff, buff, bufflen);
-            p->bufflen = bufflen;
-            send_buffer_mutex_->lock();
-            if (bot_node_) {
-                bot_node_->next = p;
-                bot_node_ = p;
-            }else{
-                top_node_ = p;
-                bot_node_ = p;
-            }
-            send_buffer_mutex_->unlock();
-            DoSend();
-        }
-    }
-
-    void TcpClient::SetActive(bool active)
-    {
-        if (active) {
-            if (!IsActive()) {
-                ActiveStart();
-            }
-        } else {
-            if (IsActive()) {
-                ActiveStop();
-            }
-        }
-    }
-
-    void TcpClient::ActiveStart()
-    {
-        actived_ = true;
-        connected_ = false;
-        socket_->async_connect
-            (*endpoint_,
-             [this] (const asio::error_code& ec)
-             {
-                 HandleConnect(ec);
-             });
-    }
-
-    void TcpClient::ActiveStop()
-    {
-        actived_ = true;
-        connected_ = false;
-    }
-
-    void TcpClient::HandleConnect(const asio::error_code& err)
-    {
-        if (err) {
-            actived_ = false;
-            connected_ = false;
-            if (on_error) {
-                on_error(this, err.value());
-            }
-            return;
-        } else {
-            connected_ = true;
-            if (on_connect) {
-                on_connect(this);
-            }
-            DoRead();
-        }
-    }
-
-    void TcpClient::DoRead()
-    {
-        socket_->async_read_some
-            (asio::buffer(buffer_),
-             [this](std::error_code ec, std::size_t bytes_transferred)
-             {
-                 if (!ec) {
-                     if (on_socketread) {
-                         on_socketread(this, buffer_.data(), bytes_transferred);
-                     }
-                     DoRead();
-                 } else {
-                     a8::XPrintf("DoRead error %s\n", {ec.message()});
-                     actived_ = false;
-                     connected_ = false;
-                     if (on_disconnect) {
-                         on_disconnect(this, ec.value());
-                     }
-                 }
-             });
-    }
-
-    void TcpClient::DoSend()
-    {
-        if (!work_node_) {
-            send_buffer_mutex_->lock();
-            work_node_ = top_node_;
-            top_node_ = nullptr;
-            bot_node_ = nullptr;
-            send_buffer_mutex_->unlock();
-        }
-        if (work_node_ && !sending_) {
-            sending_ = true;
-            char* buf = work_node_->buff + work_node_->sent_bytes;
-            int buf_len = work_node_->bufflen - work_node_->sent_bytes;
-            asio::async_write
-                (*socket_,
-                 asio::buffer(buf, buf_len),
-                 [this] (const asio::error_code& ec, std::size_t bytes_transferred)
-                 {
-                     if (!ec) {
-                         send_buffer_mutex_->lock();
-                         if (work_node_) {
-                             work_node_->sent_bytes += bytes_transferred;
-                             if (work_node_->sent_bytes >= work_node_->bufflen) {
-                                 auto pdelnode = work_node_;
-                                 work_node_ = work_node_->next;
-                                 free(pdelnode->buff);
-                                 free((void*)pdelnode);
-                             }
-                             if (!work_node_) {
-                                 sending_ = false;
-                             }
-                             send_buffer_mutex_->unlock();
-                             DoSend();
-                             return;
-                         }
-                         send_buffer_mutex_->unlock();
-                     } else {
-                         a8::XPrintf("DoSend error %s\n", {ec.message()});
-                         actived_ = false;
-                         connected_ = false;
-                         if (on_disconnect) {
-                             on_disconnect(this, ec.value());
-                         }
-                     }
-                 });
-
-        }
+        impl_->SendBuff(buff, bufflen);
     }
 
 }
diff --git a/third_party/f8/f8/tcpclient.h b/third_party/f8/f8/tcpclient.h
index 734089c..bc61d48 100644
--- a/third_party/f8/f8/tcpclient.h
+++ b/third_party/f8/f8/tcpclient.h
@@ -1,11 +1,17 @@
 #pragma once
 
-#include <asio.hpp>
-
-using asio::ip::tcp;
-
 namespace f8
 {
+    namespace internal
+    {
+        class AsioTcpClient;
+    }
+}
+
+namespace f8
+{
+
+    using TcpClientImpl = f8::internal::AsioTcpClient;
 
     class TcpClient
     {
@@ -15,47 +21,19 @@ namespace f8
         std::function<void (f8::TcpClient*, int)> on_disconnect;
         std::function<void (f8::TcpClient*, char*, unsigned int)> on_socketread;
 
-        TcpClient(std::shared_ptr<asio::io_context> io_context,
-                  const std::string& remote_ip,
-                  int remote_port);
         TcpClient(const std::string& remote_ip, int remote_port);
         virtual ~TcpClient();
-        const std::string& GetRemoteAddress() { return remote_address_; }
-        int GetRemotePort() { return remote_port_; }
+        const std::string& GetRemoteAddress();
+        int GetRemotePort();
 
         void Open();
         void Close();
-        bool IsActive();
         bool Connected();
         void SendBuff(const char* buff, unsigned int bufflen);
 
     private:
-        void Init(std::shared_ptr<asio::io_context> io_context,
-                  const std::string& remote_ip,
-                  int remote_port);
-        void HandleConnect(const asio::error_code& err);
-        void DoRead();
-        void DoSend();
+        std::shared_ptr<TcpClientImpl> impl_;
 
-    private:
-        std::shared_ptr<asio::io_context> io_context_;
-        std::string remote_address_;
-        int remote_port_ = 0;
-
-        std::shared_ptr<asio::ip::tcp::endpoint> endpoint_;
-        std::shared_ptr<asio::ip::tcp::socket> socket_;
-        volatile bool actived_ = false;
-        volatile bool connected_ = false;
-        std::shared_ptr<std::mutex> send_buffer_mutex_;
-        a8::SendQueueNode *top_node_ = nullptr;
-        a8::SendQueueNode *bot_node_ = nullptr;
-        volatile a8::SendQueueNode *work_node_ = nullptr;
-        volatile bool sending_ = false;
-        std::array<char, 1024 * 64> buffer_;
-
-        void SetActive(bool active);
-        void ActiveStart();
-        void ActiveStop();
     };
 
 }