145 lines
4.0 KiB
Java
145 lines
4.0 KiB
Java
/*
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* Copyright 2002 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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/* @test
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* @bug 4512028
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* @summary Check the tolerance on read timeouts.
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*/
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import java.net.*;
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import java.io.*;
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public class AccurateTimeout {
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static final int TOLERANCE = 100;
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static boolean skipTest() {
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String os = System.getProperty("os.name");
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if (os.equals("Windows 95") ||
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os.equals("Windows 98") ||
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os.equals("Windows Me")) {
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System.out.println("Due to an OS bug timeout tolerance cannot be tested on this OS");
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return true;
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}
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return false;
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}
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public static void main(String args[]) throws Exception {
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if (skipTest()) {
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return;
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}
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int failures = 0;
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int timeout;
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System.out.println("");
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System.out.println("Testing Socket.getInputStream().read() ...");
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System.out.println("");
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ServerSocket ss = new ServerSocket(0);
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Socket s1 = new Socket(InetAddress.getLocalHost(), ss.getLocalPort());
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Socket s2 = ss.accept();
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InputStream in = s1.getInputStream();
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timeout = 100;
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while (timeout < 2500) {
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s1.setSoTimeout(timeout);
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long startTime = System.currentTimeMillis();
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try {
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in.read();
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} catch (SocketTimeoutException e) {
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}
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long actual = System.currentTimeMillis() - startTime;
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System.out.print("excepted: " + timeout + " actual: " + actual);
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if (Math.abs(actual-timeout) > TOLERANCE) {
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System.out.print(" *** FAIL: outside tolerance");
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failures++;
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} else {
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System.out.print(" PASS.");
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}
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System.out.println("");
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timeout += 200;
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}
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s1.close();
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s2.close();
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ss.close();
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// ----------
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System.out.println("");
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System.out.println("Testing DatagramSocket.receive ...");
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System.out.println("");
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byte b[] = new byte[8];
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DatagramPacket p = new DatagramPacket(b, b.length);
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DatagramSocket ds = new DatagramSocket();
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timeout = 100;
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while (timeout < 2500) {
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ds.setSoTimeout(timeout);
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long startTime = System.currentTimeMillis();
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try {
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ds.receive(p);
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} catch (SocketTimeoutException e) {
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}
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long actual = System.currentTimeMillis() - startTime;
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System.out.print("excepted: " + timeout + " actual: " + actual);
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if (Math.abs(actual-timeout) > TOLERANCE) {
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System.out.print(" *** FAIL: outside tolerance");
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failures++;
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} else {
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System.out.print(" PASS.");
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}
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System.out.println("");
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timeout += 200;
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}
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ds.close();
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System.out.println("");
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// ---------
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if (failures > 0) {
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throw new Exception("Test failed: " + failures +
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" test(s) outside tolerance");
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}
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}
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}
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