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1   /*******************************************************************************
2    * Copyright (c) 2011 Michael Mimo Moratti.
3    *
4    * Michael Mimo Moratti licenses this file to you under the Apache License, version 2.0
5    * (the "License"); you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at:
7    *     http://www.apache.org/licenses/LICENSE-2.0
8    * Unless required by applicable law or agreed to in writing, software
9    * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
10   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
11   * License for the specific language governing permissions and limitations
12   * under the License.
13   *******************************************************************************/
14  package ch.mimo.netty.example.icap.simple;
15  
16  import java.net.InetSocketAddress;
17  import java.util.concurrent.Executors;
18  
19  import org.jboss.netty.bootstrap.ClientBootstrap;
20  import org.jboss.netty.buffer.ChannelBuffers;
21  import org.jboss.netty.channel.Channel;
22  import org.jboss.netty.channel.ChannelFuture;
23  import org.jboss.netty.channel.socket.oio.OioClientSocketChannelFactory;
24  import org.jboss.netty.handler.codec.http.DefaultHttpRequest;
25  import org.jboss.netty.handler.codec.http.HttpHeaders;
26  import org.jboss.netty.handler.codec.http.HttpMethod;
27  import org.jboss.netty.handler.codec.http.HttpRequest;
28  import org.jboss.netty.handler.codec.http.HttpVersion;
29  
30  import ch.mimo.netty.handler.codec.icap.DefaultIcapRequest;
31  import ch.mimo.netty.handler.codec.icap.IcapMethod;
32  import ch.mimo.netty.handler.codec.icap.IcapRequest;
33  import ch.mimo.netty.handler.codec.icap.IcapVersion;
34  
35  /**
36   * Simple ICAP client that send a REQMOD request with a HTTP POST request and body
37   * to a server and prints the answer.
38   * 
39   * @author Michael Mimo Moratti (mimo@mimo.ch)
40   *
41   */
42  public class IcapClient {
43  
44  	public static void main(String[] args) {
45  			int port = 8099;
46  			String host = "localhost";
47  			
48  	        // Configure the client.
49  	        ClientBootstrap bootstrap = new ClientBootstrap(
50  	                new OioClientSocketChannelFactory(
51  	                        Executors.newCachedThreadPool()));
52  
53  	        // Set up the event pipeline factory.
54  	        bootstrap.setPipelineFactory(new IcapClientChannelPipeline());
55  
56  	        // Start the connection attempt.
57  	        ChannelFuture future = bootstrap.connect(new InetSocketAddress(host,port));
58  
59  	        // Wait until the connection attempt succeeds or fails.
60  	        Channel channel = future.awaitUninterruptibly().getChannel();
61  	        if (!future.isSuccess()) {
62  	            future.getCause().printStackTrace();
63  	            bootstrap.releaseExternalResources();
64  	            return;
65  	        }
66  
67  	        // Prepare the ICAP request.
68  	        IcapRequest request = new DefaultIcapRequest(IcapVersion.ICAP_1_0,IcapMethod.REQMOD,"/simple","localhost");     
69  	        HttpRequest httpRequest = new DefaultHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.POST,"/some/servers/uri");
70  	        httpRequest.setHeader(HttpHeaders.Names.HOST,host);
71  	        httpRequest.setHeader(HttpHeaders.Names.CONNECTION, HttpHeaders.Values.CLOSE);
72  	        httpRequest.setHeader(HttpHeaders.Names.ACCEPT_ENCODING, HttpHeaders.Values.GZIP);
73  	        httpRequest.setContent(ChannelBuffers.wrappedBuffer("This is the message body that contains all the necessary data to answer the ultimate question...".getBytes()));
74  	        request.setHttpRequest(httpRequest);
75  	        
76  	        // Send the ICAP request.
77  	        channel.write(request);
78  
79  	        // Wait for the server to close the connection.
80  	        channel.getCloseFuture().awaitUninterruptibly();
81  
82  	        // Shut down executor threads to exit.
83  	        bootstrap.releaseExternalResources();
84  	}
85  }