http://jsourcery.com/output/sourceforge/cyberlink/1.7.0/org/cybergarage/upnp/ssdp/HTTPMUSocket.source.html
0 /**
1 *
2 * CyberLink for Java
3 *
4 * Copyright (C) Satoshi Konno 2002-2004
5 *
6 * File: HTTPMU.java
7 *
8 * Revision;
9 *
10 * 11/18/02
11 * - first revision.
12 * 09/03/03
13 * - Changed to open the socket using setReuseAddress().
14 * 12/10/03
15 * - Fixed getLocalAddress() to return a valid interface address.
16 * 02/28/04
17 * - Added getMulticastInetAddress(), getMulticastAddress().
18 * 11/19/04
19 * - Theo Beisch <[email protected]>
20 * - Changed send() to set the TTL as 4.
21 *
22 */
23 package org.cybergarage.upnp.ssdp;
24 import java.net.*;
25
26 import java.util.*;
27
28 import org.cybergarage.http.*;
29
30 import org.cybergarage.util.*;
31
32
33 public class HTTPMUSocket {
34
35 private InetSocketAddress ssdpMultiGroup = null;
36 private MulticastSocket ssdpMultiSock = null;
37 private NetworkInterface ssdpMultiIf = null;
38
39 public HTTPMUSocket() {
40 super();
41 }
42
43 public HTTPMUSocket(String addr, int port, String bindAddr) {
44 super();
45 open(addr, port, bindAddr);
46 }
47
48 protected void finalize() {
49 close();
50 }
51
52 public String getLocalAddress() {
53 InetAddress mcastAddr = ssdpMultiGroup.getAddress();
54 Enumeration addrs = ssdpMultiIf.getInetAddresses();
55 while (addrs.hasMoreElements()) {
56 InetAddress addr = (InetAddress)addrs.nextElement();
57 if (mcastAddr instanceof Inet6Address && addr instanceof Inet6Address) return addr.getHostAddress();
58 if (mcastAddr instanceof Inet4Address && addr instanceof Inet4Address) return addr.getHostAddress();
59 }
60 return "";
61 }
62
63 public InetAddress getMulticastInetAddress() {
64 return ssdpMultiGroup.getAddress();
65 }
66
67 public String getMulticastAddress() {
68 return getMulticastInetAddress().getHostAddress();
69 }
70
71 public boolean open(String addr, int port, String bindAddr) {
72 try {
73 ssdpMultiSock = new MulticastSocket(null);
74 ssdpMultiSock.setReuseAddress(true);
75 InetSocketAddress bindSockAddr = new InetSocketAddress(port);
76 ssdpMultiSock.bind(bindSockAddr);
77 ssdpMultiGroup = new InetSocketAddress(InetAddress.getByName(addr), port);
78 ssdpMultiIf = NetworkInterface.getByInetAddress(InetAddress.getByName(bindAddr));
79 ssdpMultiSock.joinGroup(ssdpMultiGroup, ssdpMultiIf);
80 } catch (Exception e) {
81 Debug.warning(e);
82 return false;
83 }
84 return true;
85 }
86
87 public boolean close() {
88 if (ssdpMultiSock == null) return true;
89 try {
90 ssdpMultiSock.leaveGroup(ssdpMultiGroup, ssdpMultiIf);
91 ssdpMultiSock = null;
92 } catch (Exception e) {
93 return false;
94 }
95 return true;
96 }
97
98 public boolean send(String msg, String bindAddr, int bindPort) {
99 try {
100 MulticastSocket msock;
101 if ((bindAddr) != null && (0 < bindPort)) {
102 msock = new MulticastSocket(null);
103 msock.bind(new InetSocketAddress(bindAddr, bindPort));
104 } else msock = new MulticastSocket();
105 DatagramPacket dgmPacket = new DatagramPacket(msg.getBytes(), msg.length(), ssdpMultiGroup);
106 msock.setTimeToLive(4);
107 msock.send(dgmPacket);
108 msock.close();
109 } catch (Exception e) {
110 Debug.warning(e);
111 return false;
112 }
113 return true;
114 }
115
116 public boolean send(String msg) {
117 return send(msg, null, -1);
118 }
119
120 public boolean post(HTTPRequest req, String bindAddr, int bindPort) {
121 return send(req.toString(), bindAddr, bindPort);
122 }
123
124 public boolean post(HTTPRequest req) {
125 return send(req.toString(), null, -1);
126 }
127
128 public SSDPPacket receive() {
129 byte[] ssdvRecvBuf = new byte[SSDP.RECV_MESSAGE_BUFSIZE];
130 SSDPPacket recvPacket = new SSDPPacket(ssdvRecvBuf, ssdvRecvBuf.length);
131 recvPacket.setLocalAddress(getLocalAddress());
132 try {
133 ssdpMultiSock.receive(recvPacket.getDatagramPacket());
134 recvPacket.setTimeStamp(System.currentTimeMillis());
135 } catch (Exception e) {
136 }
137 return recvPacket;
138 }
139 }
Copyright 2005 eSystemTech Inc.
--
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