diff --git a/net/src/main/java/com/zfoo/net/core/tcp/TcpServer.java b/net/src/main/java/com/zfoo/net/core/tcp/TcpServer.java
index 62b5cfdc..3bb89dab 100644
--- a/net/src/main/java/com/zfoo/net/core/tcp/TcpServer.java
+++ b/net/src/main/java/com/zfoo/net/core/tcp/TcpServer.java
@@ -16,7 +16,7 @@ package com.zfoo.net.core.tcp;
 import com.zfoo.net.core.AbstractServer;
 import com.zfoo.net.core.HostAndPort;
 import com.zfoo.net.handler.ServerRouteHandler;
-import com.zfoo.net.handler.codec.tcp.TcpCodecHandler;
+import com.zfoo.net.handler.codec.tcp.TcpCodecServerHandler;
 import com.zfoo.net.handler.idle.ServerIdleHandler;
 import io.netty.channel.socket.SocketChannel;
 import io.netty.handler.timeout.IdleStateHandler;
@@ -34,7 +34,7 @@ public class TcpServer extends AbstractServer<SocketChannel> {
     protected void initChannel(SocketChannel channel) throws Exception {
         channel.pipeline().addLast(new IdleStateHandler(0, 0, 180));
         channel.pipeline().addLast(new ServerIdleHandler());
-        channel.pipeline().addLast(new TcpCodecHandler());
+        channel.pipeline().addLast(new TcpCodecServerHandler());
         channel.pipeline().addLast(new ServerRouteHandler());
     }
 }
diff --git a/net/src/main/java/com/zfoo/net/handler/codec/tcp/TcpCodecServerHandler.java b/net/src/main/java/com/zfoo/net/handler/codec/tcp/TcpCodecServerHandler.java
new file mode 100644
index 00000000..cf15316b
--- /dev/null
+++ b/net/src/main/java/com/zfoo/net/handler/codec/tcp/TcpCodecServerHandler.java
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2020 The zfoo Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed
+ * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and limitations under the License.
+ */
+
+package com.zfoo.net.handler.codec.tcp;
+
+import com.zfoo.net.packet.EncodedPacketInfo;
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.ChannelHandler;
+import io.netty.channel.ChannelHandlerContext;
+
+import java.util.List;
+
+/**
+ * header(4byte) + protocolId(2byte) + packet
+ * header = body(bytes.length) + protocolId.length(2byte)
+ *
+ * @author godotg
+ */
+@ChannelHandler.Sharable
+public class TcpCodecServerHandler extends TcpCodecHandler {
+
+    @Override
+    public void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) {
+        super.decode(ctx, in, out);
+    }
+
+    @Override
+    public void encode(ChannelHandlerContext ctx, EncodedPacketInfo packetInfo, ByteBuf out) {
+        super.encode(ctx, packetInfo, out);
+    }
+
+}