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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  }