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 }