1 /***
2 * Redistribution and use of this software and associated documentation
3 * ("Software"), with or without modification, are permitted provided
4 * that the following conditions are met:
5 *
6 * 1. Redistributions of source code must retain copyright
7 * statements and notices. Redistributions must also contain a
8 * copy of this document.
9 *
10 * 2. Redistributions in binary form must reproduce the
11 * above copyright notice, this list of conditions and the
12 * following disclaimer in the documentation and/or other
13 * materials provided with the distribution.
14 *
15 * 3. The name "Exolab" must not be used to endorse or promote
16 * products derived from this Software without prior written
17 * permission of Exoffice Technologies. For written permission,
18 * please contact info@exolab.org.
19 *
20 * 4. Products derived from this Software may not be called "Exolab"
21 * nor may "Exolab" appear in their names without prior written
22 * permission of Exoffice Technologies. Exolab is a registered
23 * trademark of Exoffice Technologies.
24 *
25 * 5. Due credit should be given to the Exolab Project
26 * (http://www.exolab.org/).
27 *
28 * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
29 * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
30 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
31 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
32 * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
33 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
34 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
35 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
37 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
39 * OF THE POSSIBILITY OF SUCH DAMAGE.
40 *
41 * Copyright 2004-2005 (C) Exoffice Technologies Inc. All Rights Reserved.
42 *
43 * $Id: HTTPMultiplexer.java,v 1.4 2005/07/22 23:40:36 tanderson Exp $
44 */
45 package org.exolab.jms.net.http;
46
47 import java.io.DataInputStream;
48 import java.io.DataOutputStream;
49 import java.io.IOException;
50 import java.security.Principal;
51
52 import org.exolab.jms.net.connector.Authenticator;
53 import org.exolab.jms.net.connector.ResourceException;
54 import org.exolab.jms.net.connector.SecurityException;
55 import org.exolab.jms.net.multiplexer.Endpoint;
56 import org.exolab.jms.net.multiplexer.Multiplexer;
57 import org.exolab.jms.net.multiplexer.MultiplexerListener;
58 import org.exolab.jms.net.uri.URI;
59 import org.exolab.jms.net.uri.URIHelper;
60
61
62 /***
63 * Multiplexes data over an HTTP connection.
64 *
65 * @author <a href="mailto:tma@netspace.net.au">Tim Anderson</a>
66 * @version $Revision: 1.4 $ $Date: 2005/07/22 23:40:36 $
67 */
68 class HTTPMultiplexer extends Multiplexer {
69
70 /***
71 * The client URI.
72 */
73 private URI _clientURI;
74
75
76 /***
77 * Construct a new client-side <code>HTTPMultiplexer</code>.
78 *
79 * @param listener the multiplexer listener
80 * @param endpoint the endpoint to multiplex messages over
81 * @param clientURI the local address that the connection is bound to
82 * @param principal the security principal
83 * @throws IOException if an I/O error occurs
84 * @throws SecurityException if connection is refused by the server
85 */
86 public HTTPMultiplexer(MultiplexerListener listener, Endpoint endpoint,
87 URI clientURI, Principal principal)
88 throws IOException, SecurityException {
89 if (clientURI == null) {
90 throw new IllegalArgumentException("Argument 'clientURI' is null");
91 }
92 _clientURI = clientURI;
93 initialise(listener, endpoint, true);
94 authenticate(principal);
95 }
96
97 /***
98 * Construct a new server-side <code>HTTPMultiplexer</code>.
99 *
100 * @param listener the multiplexer listener
101 * @param endpoint the endpoint to multiplex messages over
102 * @param authenticator the connection authetnicator
103 * @throws IOException if an I/O error occurs
104 * @throws ResourceException if the authenticator cannot authenticate
105 */
106 public HTTPMultiplexer(MultiplexerListener listener, Endpoint endpoint,
107 Authenticator authenticator)
108 throws IOException, ResourceException {
109 super(listener, endpoint, authenticator);
110 }
111
112 /***
113 * Returns the client URI.
114 *
115 * @return the client URI
116 */
117 public URI getClientURI() {
118 return _clientURI;
119 }
120
121 /***
122 * Perform handshaking on initial connection, to verify protocol, and
123 * establish the client URI.
124 *
125 * @param out the endpoint's output stream
126 * @param in the endpoint's input stream
127 * @throws IOException for any I/O error
128 */
129 protected void handshake(DataOutputStream out, DataInputStream in)
130 throws IOException {
131 super.handshake(out, in);
132 if (isClient()) {
133 out.writeUTF(_clientURI.toString());
134 } else {
135 String uri = in.readUTF();
136 _clientURI = URIHelper.parse(uri);
137 }
138 }
139
140 }