/*
    * 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.ClientBootstrap;
  import org.jboss.netty.channel.ChannelFuture;
  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.NioClientSocketChannelFactory;
  import org.jboss.netty.handler.ssl.SslContext;
  import org.jboss.netty.handler.ssl.util.InsecureTrustManagerFactory;
  
  import java.net.InetSocketAddress;
  import java.util.concurrent.Executors;
  
  /**
   * Sends one message when a connection is open and echoes back any received
   * data to the server.  Simply put, the echo client initiates the ping-pong
   * traffic between the echo client and server by sending the first message to
   * the server.
   */
  public final class EchoClient {
  
      static final boolean SSL = System.getProperty("ssl") != null;
      static final String HOST = System.getProperty("host", "127.0.0.1");
      static final int PORT = Integer.parseInt(System.getProperty("port", "8007"));
      static final int SIZE = Integer.parseInt(System.getProperty("size", "256"));
  
      public static void main(String[] args) throws Exception {
          // Configure SSL.git
          final SslContext sslCtx;
          if (SSL) {
              sslCtx = SslContext.newClientContext(InsecureTrustManagerFactory.INSTANCE);
          } else {
              sslCtx = null;
          }
  
          // Configure the bootstrap.
          ClientBootstrap bootstrap = new ClientBootstrap(
                  new NioClientSocketChannelFactory(
                          Executors.newCachedThreadPool(),
                          Executors.newCachedThreadPool()));
  
          try {
              bootstrap.setPipelineFactory(new ChannelPipelineFactory() {
                  public ChannelPipeline getPipeline() {
                      ChannelPipeline p = Channels.pipeline();
                      if (sslCtx != null) {
                          p.addLast("ssl", sslCtx.newHandler(HOST, PORT));
                      }
                      p.addLast("echo", new EchoClientHandler());
                      return p;
                  }
              });
              bootstrap.setOption("tcpNoDelay", true);
              bootstrap.setOption("receiveBufferSize", 1048576);
              bootstrap.setOption("sendBufferSize", 1048576);
  
              // Start the connection attempt.
              ChannelFuture future = bootstrap.connect(new InetSocketAddress(HOST, PORT));
  
              // Wait until the connection is closed or the connection attempt fails.
              future.getChannel().getCloseFuture().sync();
          } finally {
              // Shut down thread pools to exit.
              bootstrap.releaseExternalResources();
          }
      }
  }