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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.objectecho;
17  
18  import io.netty.bootstrap.Bootstrap;
19  import io.netty.channel.ChannelInitializer;
20  import io.netty.channel.ChannelPipeline;
21  import io.netty.channel.EventLoopGroup;
22  import io.netty.channel.nio.NioEventLoopGroup;
23  import io.netty.channel.socket.SocketChannel;
24  import io.netty.channel.socket.nio.NioSocketChannel;
25  import io.netty.example.echo.EchoClient;
26  import io.netty.handler.codec.serialization.ClassResolvers;
27  import io.netty.handler.codec.serialization.ObjectDecoder;
28  import io.netty.handler.codec.serialization.ObjectEncoder;
29  import io.netty.handler.ssl.SslContext;
30  import io.netty.handler.ssl.util.InsecureTrustManagerFactory;
31  
32  /**
33   * Modification of {@link EchoClient} which utilizes Java object serialization.
34   */
35  public final class ObjectEchoClient {
36  
37      static final boolean SSL = System.getProperty("ssl") != null;
38      static final String HOST = System.getProperty("host", "127.0.0.1");
39      static final int PORT = Integer.parseInt(System.getProperty("port", "8007"));
40      static final int SIZE = Integer.parseInt(System.getProperty("size", "256"));
41  
42      public static void main(String[] args) throws Exception {
43          // Configure SSL.
44          final SslContext sslCtx;
45          if (SSL) {
46              sslCtx = SslContext.newClientContext(InsecureTrustManagerFactory.INSTANCE);
47          } else {
48              sslCtx = null;
49          }
50  
51          EventLoopGroup group = new NioEventLoopGroup();
52          try {
53              Bootstrap b = new Bootstrap();
54              b.group(group)
55               .channel(NioSocketChannel.class)
56               .handler(new ChannelInitializer<SocketChannel>() {
57                  @Override
58                  public void initChannel(SocketChannel ch) throws Exception {
59                      ChannelPipeline p = ch.pipeline();
60                      if (sslCtx != null) {
61                          p.addLast(sslCtx.newHandler(ch.alloc(), HOST, PORT));
62                      }
63                      p.addLast(
64                              new ObjectEncoder(),
65                              new ObjectDecoder(ClassResolvers.cacheDisabled(null)),
66                              new ObjectEchoClientHandler());
67                  }
68               });
69  
70              // Start the connection attempt.
71              b.connect(HOST, PORT).sync().channel().closeFuture().sync();
72          } finally {
73              group.shutdownGracefully();
74          }
75      }
76  }