1 /*
2 * $Header: /home/cvs/jakarta-commons/httpclient/src/test/org/apache/commons/httpclient/server/TransparentProxyRequestHandler.java,v 1.1.2.1 2003/12/05 21:02:52 oglueck Exp $
3 * $Revision: 1.1.2.1 $
4 * $Date: 2003/12/05 21:02:52 $
5 *
6 * ====================================================================
7 *
8 * The Apache Software License, Version 1.1
9 *
10 * Copyright (c) 1999-2003 The Apache Software Foundation. All rights
11 * reserved.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 *
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 *
20 * 2. Redistributions in binary form must reproduce the above copyright
21 * notice, this list of conditions and the following disclaimer in
22 * the documentation and/or other materials provided with the
23 * distribution.
24 *
25 * 3. The end-user documentation included with the redistribution, if
26 * any, must include the following acknowlegement:
27 * "This product includes software developed by the
28 * Apache Software Foundation (http://www.apache.org/)."
29 * Alternately, this acknowlegement may appear in the software itself,
30 * if and wherever such third-party acknowlegements normally appear.
31 *
32 * 4. The names "The Jakarta Project", "Commons", and "Apache Software
33 * Foundation" must not be used to endorse or promote products derived
34 * from this software without prior written permission. For written
35 * permission, please contact apache@apache.org.
36 *
37 * 5. Products derived from this software may not be called "Apache"
38 * nor may "Apache" appear in their names without prior written
39 * permission of the Apache Group.
40 *
41 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
42 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
43 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
44 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
45 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
46 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
47 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
48 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
49 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
50 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
51 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * SUCH DAMAGE.
53 * ====================================================================
54 *
55 * This software consists of voluntary contributions made by many
56 * individuals on behalf of the Apache Software Foundation. For more
57 * information on the Apache Software Foundation, please see
58 * <http://www.apache.org/>.
59 *
60 * [Additional notices, if required by prior licensing conditions]
61 *
62 */
63
64 package org.apache.commons.httpclient.server;
65
66 import java.io.IOException;
67 import java.io.InputStream;
68 import java.io.OutputStream;
69 import java.io.OutputStreamWriter;
70 import java.io.UnsupportedEncodingException;
71 import java.io.Writer;
72 import java.net.Socket;
73
74 import org.apache.commons.httpclient.Header;
75 import org.apache.commons.httpclient.HttpConstants;
76 import org.apache.commons.httpclient.HttpURL;
77 import org.apache.commons.httpclient.URI;
78
79 /***
80 * This request handler can handle the CONNECT method. It does
81 * nothing for any other HTTP methods.
82 *
83 * @author Ortwin Glueck
84 */
85 public class TransparentProxyRequestHandler implements HttpRequestHandler {
86
87 /* (non-Javadoc)
88 * @see org.apache.commons.httpclient.server.HttpRequestHandler#processRequest(org.apache.commons.httpclient.server.SimpleHttpServerConnection)
89 */
90 public boolean processRequest(SimpleHttpServerConnection conn) throws IOException {
91 RequestLine line = conn.getRequestLine();
92 String method = line.getMethod();
93 if (!"CONNECT".equalsIgnoreCase(method)) return false;
94 URI url = new HttpURL(line.getUri());
95 handshake(conn, url);
96 return true;
97 }
98
99 private void handshake(SimpleHttpServerConnection conn, URI url) throws IOException {
100 Socket targetSocket = new Socket(url.getHost(), url.getPort());
101 InputStream sourceIn = conn.getInputStream();
102 OutputStream sourceOut = conn.getOutputStream();
103 InputStream targetIn = targetSocket.getInputStream();
104 OutputStream targetOut = targetSocket.getOutputStream();
105
106 ResponseWriter out = conn.getWriter();
107 out.println("HTTP/1.1 200 Connection established");
108 out.flush();
109
110 BidiStreamProxy bdsp = new BidiStreamProxy(sourceIn, sourceOut, targetIn, targetOut);
111 bdsp.start();
112 try {
113 bdsp.block();
114 } catch (InterruptedException e) {
115 throw new IOException(e.toString());
116 }
117 }
118
119 private void sendHeaders(Header[] headers, OutputStream os) throws IOException {
120 Writer out;
121 try {
122 out = new OutputStreamWriter(os, HttpConstants.HTTP_ELEMENT_CHARSET);
123 } catch (UnsupportedEncodingException e) {
124 throw new RuntimeException(e.toString());
125 }
126 for (int i=0; i<headers.length; i++) {
127 out.write(headers[i].toExternalForm());
128 }
129 }
130 }
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