126 lines
3.9 KiB
Java
126 lines
3.9 KiB
Java
/*
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* Copyright (c) 2001, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 4431020
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* @summary On Windows 2000 we observed behaviour that reflects the underlying
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* implementation :-
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* 1. PortUnreachableException throw per underlying reset
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* 2. No PUE throw for DatagramSocket.send
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*/
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import java.net.*;
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public class Concurrent implements Runnable {
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DatagramSocket s;
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public void run() {
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try {
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byte b[] = new byte[512];
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DatagramPacket p = new DatagramPacket(b, b.length);
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int pue_count = 0;
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while (true) {
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try {
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System.out.println("receive...");
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s.receive(p);
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} catch (PortUnreachableException pue) {
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System.out.println("receive threw PortUnreachableException");
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pue_count++;
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}
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System.out.println("receiver sleeping");
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Thread.currentThread().sleep(100*pue_count);
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}
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} catch (Exception e) { }
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}
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Concurrent(InetAddress ia, int port) throws Exception {
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System.out.println("");
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System.out.println("***");
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System.out.println("Test Description:");
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System.out.println(" - Block reader thread on receive");
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System.out.println(" - Send datagrams to bad destination with wee pauses");
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System.out.println(" - Observe which thread gets the PUE");
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System.out.println("");
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/*
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* Create the datagram and connect it to destination
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*/
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s = new DatagramSocket();
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s.connect(ia, port);
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s.setSoTimeout(60000);
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/*
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* Start the reader thread
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*/
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Thread thr = new Thread(this);
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thr.start();
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Thread.currentThread().sleep(2000);
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byte b[] = new byte[512];
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DatagramPacket p = new DatagramPacket(b, b.length);
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/*
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* Send a bunch of packets to the destination
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*/
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for (int i=0; i<10; i++) {
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try {
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System.out.println("Sending...");
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s.send(p);
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} catch (PortUnreachableException e) {
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System.out.println("send threw PortUnreachableException");
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}
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Thread.currentThread().sleep(100);
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}
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/*
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* Give time for ICMP port unreachables to return
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*/
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Thread.currentThread().sleep(5000);
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s.close();
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}
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public static void main(String args[]) throws Exception {
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InetAddress ia;
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int port;
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if (args.length >= 2) {
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ia = InetAddress.getByName(args[0]);
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port = Integer.parseInt(args[1]);
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} else {
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ia = InetAddress.getLocalHost();
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DatagramSocket s1 = new DatagramSocket();
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port = s1.getLocalPort();
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s1.close();
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}
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new Concurrent(ia, port);
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}
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}
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