J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2001 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /** |
| 25 | * @test |
| 26 | * @bug 4433616 |
| 27 | * @summary Test that packet discarding is done at impl level |
| 28 | */ |
| 29 | import java.net.*; |
| 30 | |
| 31 | public class CheckDiscard { |
| 32 | |
| 33 | CheckDiscard() throws Exception { |
| 34 | |
| 35 | DatagramSocket s = new DatagramSocket(); |
| 36 | |
| 37 | /* |
| 38 | * Create two sender threads |
| 39 | */ |
| 40 | Sender s1 = new Sender( s.getLocalPort() ); |
| 41 | Sender s2 = new Sender( s.getLocalPort() ); |
| 42 | |
| 43 | /* |
| 44 | * "connect" to sender 1 |
| 45 | */ |
| 46 | InetAddress ia = InetAddress.getLocalHost(); |
| 47 | s.connect( ia, s1.getLocalPort() ); |
| 48 | |
| 49 | /* |
| 50 | * Kick off the senders |
| 51 | */ |
| 52 | (new Thread(s1)).start(); |
| 53 | (new Thread(s2)).start(); |
| 54 | |
| 55 | /* |
| 56 | * Receive packets and verify that they came from the |
| 57 | * right sender |
| 58 | */ |
| 59 | byte b[] = new byte[512]; |
| 60 | DatagramPacket p = new DatagramPacket(b, b.length); |
| 61 | s.setSoTimeout(4000); |
| 62 | try { |
| 63 | for (int i=0; i<20; i++) { |
| 64 | s.receive(p); |
| 65 | if ((p.getPort() != s1.getLocalPort()) || |
| 66 | (!p.getAddress().equals(ia))) { |
| 67 | throw new Exception("Received packet from wrong sender"); |
| 68 | } |
| 69 | } |
| 70 | } catch (SocketTimeoutException e) { |
| 71 | } |
| 72 | |
| 73 | /* |
| 74 | * Finally check if either sender threw an exception |
| 75 | */ |
| 76 | Exception e; |
| 77 | e = s1.getException(); |
| 78 | if (e != null) throw e; |
| 79 | e = s2.getException(); |
| 80 | if (e != null) throw e; |
| 81 | } |
| 82 | |
| 83 | public static void main(String args[]) throws Exception { |
| 84 | new CheckDiscard(); |
| 85 | } |
| 86 | |
| 87 | |
| 88 | |
| 89 | public class Sender implements Runnable { |
| 90 | |
| 91 | Exception exc = null; |
| 92 | DatagramSocket s; |
| 93 | int port; |
| 94 | |
| 95 | Sender(int port) throws Exception { |
| 96 | s = new DatagramSocket(); |
| 97 | this.port = port; |
| 98 | } |
| 99 | |
| 100 | public int getLocalPort() { |
| 101 | return s.getLocalPort(); |
| 102 | } |
| 103 | |
| 104 | public void setException(Exception e) { |
| 105 | exc = e; |
| 106 | } |
| 107 | |
| 108 | public Exception getException() { |
| 109 | return exc; |
| 110 | } |
| 111 | |
| 112 | /* |
| 113 | * Send 10 packets to the receiver |
| 114 | */ |
| 115 | public void run() { |
| 116 | try { |
| 117 | |
| 118 | byte b[] = "Hello".getBytes(); |
| 119 | DatagramPacket p = new DatagramPacket(b, b.length); |
| 120 | p.setAddress( InetAddress.getLocalHost() ); |
| 121 | p.setPort( port ); |
| 122 | |
| 123 | for (int i=0; i<10; i++) { |
| 124 | s.send(p); |
| 125 | Thread.currentThread().sleep(1000); |
| 126 | } |
| 127 | |
| 128 | } catch (Exception e) { |
| 129 | setException(e); |
| 130 | } |
| 131 | |
| 132 | s.close(); |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | } |