1 /*
2 * Copyright 2012 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package io.netty.example.echo;
17
18 import io.netty.channel.ChannelHandler.Sharable;
19 import io.netty.channel.ChannelHandlerContext;
20 import io.netty.channel.ChannelInboundHandlerAdapter;
21
22 /**
23 * Handler implementation for the echo server.
24 */
25 @Sharable
26 public class EchoServerHandler extends ChannelInboundHandlerAdapter {
27
28 @Override
29 public void channelRead(ChannelHandlerContext ctx, Object msg) {
30 ctx.write(msg);
31 }
32
33 @Override
34 public void channelReadComplete(ChannelHandlerContext ctx) {
35 ctx.flush();
36 }
37
38 @Override
39 public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
40 // Close the connection when an exception is raised.
41 cause.printStackTrace();
42 ctx.close();
43 }
44 }