| MulticastServerTool.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23 package com.liferay.util.transport;
24
25 import java.net.DatagramPacket;
26 import java.net.InetAddress;
27
28 /**
29 * <a href="MulticastServerTool.java.html"><b><i>View Source</i></b></a>
30 *
31 * <p>
32 * A server that will send out heart beat messages until you kill it. This
33 * enables you to try and debug multicast issues.
34 * </p>
35 *
36 * @author Michael C. Han
37 */
38 public class MulticastServerTool {
39
40 public static void main(String[] args) {
41 try {
42 int port = Integer.parseInt(args[1]);
43 long interval = Long.parseLong(args[2]);
44
45 DatagramHandler handler = new DatagramHandler() {
46
47 public void process(DatagramPacket packet) {
48 String s = new String(
49 packet.getData(), 0, packet.getLength());
50
51 System.out.println(s);
52 }
53
54 public void errorReceived(Throwable t) {
55 t.printStackTrace();
56 }
57
58 };
59
60 MulticastTransport transport = new MulticastTransport(
61 handler, args[0], port);
62
63 transport.connect();
64
65 String msg =
66 InetAddress.getLocalHost().getHostName() + ":" + port +
67 " heartbeat " ;
68
69 int i = 0;
70
71 while (true) {
72 transport.sendMessage(msg + i);
73
74 i++;
75
76 Thread.sleep(interval);
77 }
78 }
79 catch (Exception e) {
80 e.printStackTrace();
81
82 System.err.println(
83 "Usage: java MulticastServerTool multicastAddress port " +
84 "interval");
85
86 System.exit(1);
87 }
88 }
89
90 }