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 com.liferay.portal.kernel.util.GetterUtil; 26 27 import java.net.DatagramPacket; 28 import java.net.InetAddress; 29 30 /** 31 * <a href="MulticastServerTool.java.html"><b><i>View Source</i></b></a> 32 * 33 * <p> 34 * A server that will send out heart beat messages until you kill it. This 35 * enables you to try and debug multicast issues. 36 * </p> 37 * 38 * @author Michael C. Han 39 * 40 */ 41 public class MulticastServerTool { 42 43 public static void main(String[] args) { 44 try { 45 int port = GetterUtil.getInteger(args[1]); 46 long interval = GetterUtil.getLong(args[2]); 47 48 DatagramHandler handler = new DatagramHandler() { 49 50 public void process(DatagramPacket packet) { 51 String s = new String( 52 packet.getData(), 0, packet.getLength()); 53 54 System.out.println(s); 55 } 56 57 public void errorReceived(Throwable t) { 58 t.printStackTrace(); 59 } 60 61 }; 62 63 MulticastTransport transport = new MulticastTransport( 64 handler, args[0], port); 65 66 transport.connect(); 67 68 String msg = 69 InetAddress.getLocalHost().getHostName() + ":" + port + 70 " heartbeat " ; 71 72 int i = 0; 73 74 while (true) { 75 transport.sendMessage(msg + i); 76 77 i++; 78 79 Thread.sleep(interval); 80 } 81 } 82 catch (Exception e) { 83 e.printStackTrace(); 84 85 System.err.println( 86 "Usage: java MulticastServerTool multicastAddress port " + 87 "interval"); 88 89 System.exit(1); 90 } 91 } 92 93 }