1 /*
2 * junixsocket
3 *
4 * Copyright 2009-2024 Christian Kohlschütter
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18 package org.newsclub.net.unix.demo.netty;
19
20 import io.netty.channel.ChannelHandlerContext;
21 import io.netty.channel.ChannelInboundHandlerAdapter;
22
23 /**
24 * Handles a server-side channel.
25 * <p>
26 * Based on example code from <a href="https://netty.io/wiki/user-guide-for-4.x.html">Netty user
27 * guide for 4.x</a>
28 */
29 @SuppressWarnings("FutureReturnValueIgnored" /* errorprone */ )
30 class EchoServerHandler extends ChannelInboundHandlerAdapter { // (1)
31
32 @Override
33 public void channelRead(ChannelHandlerContext ctx, Object msg) {
34 ctx.write(msg); // (1)
35 ctx.flush(); // (2)
36 }
37
38 @Override
39 public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) { // (4)
40 // Close the connection when an exception is raised.
41 cause.printStackTrace();
42 ctx.close();
43 }
44 }