145 lines
4.6 KiB
Java
145 lines
4.6 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 OneExceptionOnly {
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static void doTest(InetAddress ia, int port, boolean testSend) 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(" - Send 10 datagrams to bad destination");
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System.out.println(" - <wait a wee while>");
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if (testSend) {
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System.out.println(" - Send another datagram - should throw PUE or timeout");
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} else {
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System.out.println(" - Receive another datagram - should throw PUE or timeout");
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}
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System.out.println(" - Receive another receive - a SocketTimeoutException expected");
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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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DatagramSocket s1 = new DatagramSocket();
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s1.connect(ia, port);
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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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int outstanding = 0;
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for (int i=0; i<20; i++) {
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try {
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s1.send(p);
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outstanding++;
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} catch (PortUnreachableException e) {
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/* PUE throw => assume none outstanding now */
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outstanding = 0;
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}
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if (outstanding > 1) {
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break;
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}
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}
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if (outstanding < 1) {
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System.out.println("Insufficient exceptions outstanding - Test Skipped (Passed).");
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s1.close();
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return;
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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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/*
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* The next send or receive should cause a PUE to be thrown
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*/
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boolean gotPUE = false;
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boolean gotTimeout = false;
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s1.setSoTimeout(2000);
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try {
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if (testSend) {
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s1.send(p);
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} else {
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s1.receive(p);
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}
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} catch (PortUnreachableException pue) {
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gotPUE = true;
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System.out.println("Expected PortUnreachableException thrown - good!");
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} catch (SocketTimeoutException exc) {
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}
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/*
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* The next receive should timeout
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*/
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if (gotPUE) {
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try {
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s1.receive(p);
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} catch (PortUnreachableException pue) {
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throw new Exception("Unexpected PUE received - assumed that PUs would be consumed");
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} catch (SocketTimeoutException exc) {
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System.out.println("Expected SocketTimeoutException thrown - excellent! - Test Passed.");
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}
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} else {
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System.out.println("Expected PUE not thrown - packets probably discarded (Passed).");
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}
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s1.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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doTest(ia, port, true);
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doTest(ia, port, false);
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}
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}
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