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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    *   http://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.udt.echo.message;
17  
18  import io.netty.channel.ChannelHandler.Sharable;
19  import io.netty.channel.ChannelHandlerAdapter;
20  import io.netty.channel.ChannelHandlerContext;
21  import io.netty.channel.udt.nio.NioUdtProvider;
22  
23  /**
24   * Handler implementation for the echo server.
25   */
26  @Sharable
27  public class MsgEchoServerHandler extends ChannelHandlerAdapter {
28  
29      @Override
30      public void channelActive(final ChannelHandlerContext ctx) {
31          System.err.println("ECHO active " + NioUdtProvider.socketUDT(ctx.channel()).toStringOptions());
32      }
33  
34      @Override
35      public void channelRead(ChannelHandlerContext ctx, Object msg) {
36          ctx.write(msg);
37      }
38  
39      @Override
40      public void channelReadComplete(ChannelHandlerContext ctx) {
41          ctx.flush();
42      }
43  
44      @Override
45      public void exceptionCaught(final ChannelHandlerContext ctx, final Throwable cause) {
46          cause.printStackTrace();
47          ctx.close();
48      }
49  }