J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2002 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 | /* @test |
| 25 | * @bug 4512028 |
| 26 | * @summary Check the tolerance on read timeouts. |
| 27 | */ |
| 28 | import java.net.*; |
| 29 | import java.io.*; |
| 30 | |
| 31 | public class AccurateTimeout { |
| 32 | |
| 33 | static final int TOLERANCE = 100; |
| 34 | |
| 35 | static boolean skipTest() { |
| 36 | String os = System.getProperty("os.name"); |
| 37 | if (os.equals("Windows 95") || |
| 38 | os.equals("Windows 98") || |
| 39 | os.equals("Windows Me")) { |
| 40 | |
| 41 | System.out.println("Due to an OS bug timeout tolerance cannot be tested on this OS"); |
| 42 | return true; |
| 43 | } |
| 44 | return false; |
| 45 | } |
| 46 | |
| 47 | public static void main(String args[]) throws Exception { |
| 48 | |
| 49 | if (skipTest()) { |
| 50 | return; |
| 51 | } |
| 52 | |
| 53 | int failures = 0; |
| 54 | int timeout; |
| 55 | |
| 56 | System.out.println(""); |
| 57 | System.out.println("Testing Socket.getInputStream().read() ..."); |
| 58 | System.out.println(""); |
| 59 | |
| 60 | ServerSocket ss = new ServerSocket(0); |
| 61 | Socket s1 = new Socket(InetAddress.getLocalHost(), ss.getLocalPort()); |
| 62 | Socket s2 = ss.accept(); |
| 63 | |
| 64 | InputStream in = s1.getInputStream(); |
| 65 | |
| 66 | timeout = 100; |
| 67 | while (timeout < 2500) { |
| 68 | s1.setSoTimeout(timeout); |
| 69 | |
| 70 | long startTime = System.currentTimeMillis(); |
| 71 | try { |
| 72 | in.read(); |
| 73 | } catch (SocketTimeoutException e) { |
| 74 | } |
| 75 | long actual = System.currentTimeMillis() - startTime; |
| 76 | |
| 77 | System.out.print("excepted: " + timeout + " actual: " + actual); |
| 78 | |
| 79 | if (Math.abs(actual-timeout) > TOLERANCE) { |
| 80 | System.out.print(" *** FAIL: outside tolerance"); |
| 81 | failures++; |
| 82 | } else { |
| 83 | System.out.print(" PASS."); |
| 84 | } |
| 85 | |
| 86 | System.out.println(""); |
| 87 | timeout += 200; |
| 88 | } |
| 89 | |
| 90 | s1.close(); |
| 91 | s2.close(); |
| 92 | ss.close(); |
| 93 | |
| 94 | |
| 95 | // ---------- |
| 96 | |
| 97 | |
| 98 | System.out.println(""); |
| 99 | System.out.println("Testing DatagramSocket.receive ..."); |
| 100 | System.out.println(""); |
| 101 | |
| 102 | byte b[] = new byte[8]; |
| 103 | DatagramPacket p = new DatagramPacket(b, b.length); |
| 104 | |
| 105 | DatagramSocket ds = new DatagramSocket(); |
| 106 | |
| 107 | timeout = 100; |
| 108 | while (timeout < 2500) { |
| 109 | ds.setSoTimeout(timeout); |
| 110 | |
| 111 | long startTime = System.currentTimeMillis(); |
| 112 | try { |
| 113 | ds.receive(p); |
| 114 | } catch (SocketTimeoutException e) { |
| 115 | } |
| 116 | long actual = System.currentTimeMillis() - startTime; |
| 117 | |
| 118 | System.out.print("excepted: " + timeout + " actual: " + actual); |
| 119 | |
| 120 | if (Math.abs(actual-timeout) > TOLERANCE) { |
| 121 | System.out.print(" *** FAIL: outside tolerance"); |
| 122 | failures++; |
| 123 | } else { |
| 124 | System.out.print(" PASS."); |
| 125 | } |
| 126 | |
| 127 | System.out.println(""); |
| 128 | timeout += 200; |
| 129 | } |
| 130 | |
| 131 | ds.close(); |
| 132 | |
| 133 | System.out.println(""); |
| 134 | |
| 135 | // --------- |
| 136 | |
| 137 | if (failures > 0) { |
| 138 | throw new Exception("Test failed: " + failures + |
| 139 | " test(s) outside tolerance"); |
| 140 | } |
| 141 | |
| 142 | } |
| 143 | |
| 144 | } |