/*
    * Copyright 2012 The Netty Project
    *
    * The Netty Project licenses this file to you under the Apache License,
    * version 2.0 (the "License"); you may not use this file except in compliance
    * with the License. You may obtain a copy of the License at:
    *
    *   http://www.apache.org/licenses/LICENSE-2.0
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
   * License for the specific language governing permissions and limitations
   * under the License.
   */
  package org.jboss.netty.example.echo;
  
  import org.jboss.netty.bootstrap.ServerBootstrap;
  import org.jboss.netty.channel.ChannelPipeline;
  import org.jboss.netty.channel.ChannelPipelineFactory;
  import org.jboss.netty.channel.Channels;
  import org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory;
  import org.jboss.netty.handler.ssl.SslContext;
  import org.jboss.netty.handler.ssl.util.SelfSignedCertificate;
  
  import java.net.InetSocketAddress;
  import java.util.concurrent.Executors;
  
  /**
   * Echoes back any received data from a client.
   */
  public final class EchoServer {
  
      static final boolean SSL = System.getProperty("ssl") != null;
      static final int PORT = Integer.parseInt(System.getProperty("port", "8007"));
  
      public static void main(String[] args) throws Exception {
          // Configure SSL.
          final SslContext sslCtx;
          if (SSL) {
              SelfSignedCertificate ssc = new SelfSignedCertificate();
              sslCtx = SslContext.newServerContext(ssc.certificate(), ssc.privateKey());
          } else {
              sslCtx = null;
          }
  
          // Configure the bootstrap.
          ServerBootstrap bootstrap = new ServerBootstrap(
                  new NioServerSocketChannelFactory(
                          Executors.newCachedThreadPool(),
                          Executors.newCachedThreadPool()));
  
          bootstrap.setPipelineFactory(new ChannelPipelineFactory() {
              public ChannelPipeline getPipeline() {
                  ChannelPipeline p = Channels.pipeline();
                  if (sslCtx != null) {
                      p.addLast("ssl", sslCtx.newHandler());
                  }
                  p.addLast("echo", new EchoServerHandler());
                  return p;
              }
          });
  
          bootstrap.setOption("child.tcpNoDelay", true);
          bootstrap.setOption("child.receiveBufferSize", 1048576);
          bootstrap.setOption("child.sendBufferSize", 1048576);
  
          // Bind and start to accept incoming connections.
          bootstrap.bind(new InetSocketAddress(PORT));
      }
  }