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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 org.jboss.netty.example.echo;
17  
18  import java.net.InetSocketAddress;
19  import java.util.concurrent.Executors;
20  
21  import org.jboss.netty.bootstrap.ServerBootstrap;
22  import org.jboss.netty.channel.ChannelPipeline;
23  import org.jboss.netty.channel.ChannelPipelineFactory;
24  import org.jboss.netty.channel.Channels;
25  import org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory;
26  
27  /**
28   * Echoes back any received data from a client.
29   */
30  public class EchoServer {
31  
32      private final int port;
33  
34      public EchoServer(int port) {
35          this.port = port;
36      }
37  
38      public void run() {
39          // Configure the server.
40          ServerBootstrap bootstrap = new ServerBootstrap(
41                  new NioServerSocketChannelFactory(
42                          Executors.newCachedThreadPool(),
43                          Executors.newCachedThreadPool()));
44  
45          // Set up the pipeline factory.
46          bootstrap.setPipelineFactory(new ChannelPipelineFactory() {
47              public ChannelPipeline getPipeline() throws Exception {
48                  return Channels.pipeline(new EchoServerHandler());
49              }
50          });
51  
52          // Bind and start to accept incoming connections.
53          bootstrap.bind(new InetSocketAddress(port));
54      }
55  
56      public static void main(String[] args) throws Exception {
57          int port;
58          if (args.length > 0) {
59              port = Integer.parseInt(args[0]);
60          } else {
61              port = 8080;
62          }
63          new EchoServer(port).run();
64      }
65  }