diff --git a/third_party/f8/f8/internal/asiotcpclient.cc b/third_party/f8/f8/internal/asiotcpclient.cc
index bbd2152..7022dd0 100644
--- a/third_party/f8/f8/internal/asiotcpclient.cc
+++ b/third_party/f8/f8/internal/asiotcpclient.cc
@@ -71,7 +71,7 @@ namespace f8
             return connected_;
         }
 
-        void AsioTcpClient::SendBuff(const char* buff, unsigned int bufflen)
+        void AsioTcpClient::SendBuff(const char* buff, int bufflen)
         {
             //a8::XPrintf("SendBuff bufflen:%d\n", {bufflen});
             if (bufflen > 0) {
@@ -149,8 +149,8 @@ namespace f8
                  [this](std::error_code ec, std::size_t bytes_transferred)
                  {
                      if (!ec) {
-                         if (on_socketread) {
-                             on_socketread(this, buffer_.data(), bytes_transferred);
+                         if (on_read) {
+                             on_read(this, buffer_.data(), bytes_transferred);
                          }
                          DoRead();
                      } else {
@@ -214,4 +214,5 @@ asio::buffer(buf, buf_len),
          }
 
     }
+
 }
diff --git a/third_party/f8/f8/internal/asiotcpclient.h b/third_party/f8/f8/internal/asiotcpclient.h
index 2a44f81..64a4339 100644
--- a/third_party/f8/f8/internal/asiotcpclient.h
+++ b/third_party/f8/f8/internal/asiotcpclient.h
@@ -15,7 +15,7 @@ namespace f8
             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;
+            std::function<void (f8::internal::AsioTcpClient*, char*, int)> on_read;
 
             AsioTcpClient(std::shared_ptr<asio::io_context> io_context,
                           const std::string& remote_ip,
@@ -29,7 +29,7 @@ namespace f8
             void Close();
             bool IsActive();
             bool Connected();
-            void SendBuff(const char* buff, unsigned int bufflen);
+            void SendBuff(const char* buff, int bufflen);
 
         private:
             void Init(std::shared_ptr<asio::io_context> io_context,
diff --git a/third_party/f8/f8/tcpclient.cc b/third_party/f8/f8/tcpclient.cc
index 107d5c6..1159651 100644
--- a/third_party/f8/f8/tcpclient.cc
+++ b/third_party/f8/f8/tcpclient.cc
@@ -9,6 +9,34 @@ namespace f8
     TcpClient::TcpClient(const std::string& remote_ip, int remote_port)
     {
         impl_ = std::make_shared<TcpClientImpl>(remote_ip, remote_port);
+        impl_->on_error =
+            [this] (f8::internal::AsioTcpClient*, int err_code)
+            {
+                if (on_error) {
+                    on_error(this, err_code);
+                }
+            };
+        impl_->on_connect =
+            [this] (f8::internal::AsioTcpClient*)
+            {
+                if (on_connect) {
+                    on_connect(this);
+                }
+            };
+        impl_->on_disconnect =
+            [this] (f8::internal::AsioTcpClient*, int err_code)
+            {
+                if (on_disconnect) {
+                    on_disconnect(this, err_code);
+                }
+            };
+        impl_->on_read =
+            [this] (f8::internal::AsioTcpClient*, char* buff, int buff_len)
+            {
+                if (on_read) {
+                    on_read(this, buff, buff_len);
+                }
+            };
     }
 
     TcpClient::~TcpClient()
@@ -31,7 +59,7 @@ namespace f8
         return impl_->Connected();
     }
 
-    void TcpClient::SendBuff(const char* buff, unsigned int bufflen)
+    void TcpClient::SendBuff(const char* buff, int bufflen)
     {
         impl_->SendBuff(buff, bufflen);
     }
diff --git a/third_party/f8/f8/tcpclient.h b/third_party/f8/f8/tcpclient.h
index bc61d48..2cb492f 100644
--- a/third_party/f8/f8/tcpclient.h
+++ b/third_party/f8/f8/tcpclient.h
@@ -19,7 +19,7 @@ namespace f8
         std::function<void (f8::TcpClient*, int)> on_error;
         std::function<void (f8::TcpClient*)> on_connect;
         std::function<void (f8::TcpClient*, int)> on_disconnect;
-        std::function<void (f8::TcpClient*, char*, unsigned int)> on_socketread;
+        std::function<void (f8::TcpClient*, char*, int)> on_read;
 
         TcpClient(const std::string& remote_ip, int remote_port);
         virtual ~TcpClient();
@@ -29,7 +29,7 @@ namespace f8
         void Open();
         void Close();
         bool Connected();
-        void SendBuff(const char* buff, unsigned int bufflen);
+        void SendBuff(const char* buff, int bufflen);
 
     private:
         std::shared_ptr<TcpClientImpl> impl_;