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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.sctp;
17  
18  import io.netty.bootstrap.ServerBootstrap;
19  import io.netty.channel.ChannelFuture;
20  import io.netty.channel.ChannelInitializer;
21  import io.netty.channel.ChannelOption;
22  import io.netty.channel.EventLoopGroup;
23  import io.netty.channel.nio.NioEventLoopGroup;
24  import io.netty.channel.sctp.SctpChannel;
25  import io.netty.channel.sctp.nio.NioSctpServerChannel;
26  import io.netty.handler.logging.LogLevel;
27  import io.netty.handler.logging.LoggingHandler;
28  
29  /**
30   * Echoes back any received data from a SCTP client.
31   */
32  public final class SctpEchoServer {
33  
34      static final int PORT = Integer.parseInt(System.getProperty("port", "8007"));
35  
36      public static void main(String[] args) throws Exception {
37          // Configure the server.
38          EventLoopGroup bossGroup = new NioEventLoopGroup(1);
39          EventLoopGroup workerGroup = new NioEventLoopGroup();
40          final SctpEchoServerHandler serverHandler = new SctpEchoServerHandler();
41          try {
42              ServerBootstrap b = new ServerBootstrap();
43              b.group(bossGroup, workerGroup)
44               .channel(NioSctpServerChannel.class)
45               .option(ChannelOption.SO_BACKLOG, 100)
46               .handler(new LoggingHandler(LogLevel.INFO))
47               .childHandler(new ChannelInitializer<SctpChannel>() {
48                   @Override
49                   public void initChannel(SctpChannel ch) throws Exception {
50                       ch.pipeline().addLast(
51                               //new LoggingHandler(LogLevel.INFO),
52                               serverHandler);
53                   }
54               });
55  
56              // Start the server.
57              ChannelFuture f = b.bind(PORT).sync();
58  
59              // Wait until the server socket is closed.
60              f.channel().closeFuture().sync();
61          } finally {
62              // Shut down all event loops to terminate all threads.
63              bossGroup.shutdownGracefully();
64              workerGroup.shutdownGracefully();
65          }
66      }
67  }