122 lines
4.4 KiB
Java
122 lines
4.4 KiB
Java
/*
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* Copyright (c) 2002, 2022, 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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import javax.naming.CommunicationException;
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import javax.naming.Context;
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import javax.naming.directory.InitialDirContext;
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import java.net.DatagramSocket;
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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import java.net.SocketTimeoutException;
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import java.time.Duration;
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import java.time.Instant;
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import jdk.test.lib.net.URIBuilder;
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/*
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* @test
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* @bug 8200151 8265309
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* @summary Tests that we can set the initial UDP timeout interval and the
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* number of retries.
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* @library ../lib/ /test/lib
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* @modules java.base/sun.security.util
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* @run main Timeout
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*/
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public class Timeout extends DNSTestBase {
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// initial timeout = 1/4 sec
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private static final int TIMEOUT = 250;
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// try 5 times per server
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private static final int RETRIES = 5;
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private Instant startTime;
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public Timeout() {
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setLocalServer(false);
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}
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public static void main(String[] args) throws Exception {
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new Timeout().run(args);
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}
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/*
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* Tests that we can set the initial UDP timeout interval and the
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* number of retries.
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*/
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@Override
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public void runTest() throws Exception {
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// Create a DatagramSocket and bind it to the loopback address to simulate
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// UDP DNS server that doesn't respond
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try (DatagramSocket ds = new DatagramSocket(
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new InetSocketAddress(InetAddress.getLoopbackAddress(), 0))) {
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String allQuietUrl = URIBuilder.newBuilder()
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.scheme("dns")
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.loopback()
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.port(ds.getLocalPort())
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.build()
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.toString();
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env().put(Context.PROVIDER_URL, allQuietUrl);
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env().put("com.sun.jndi.dns.timeout.initial", String.valueOf(TIMEOUT));
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env().put("com.sun.jndi.dns.timeout.retries", String.valueOf(RETRIES));
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setContext(new InitialDirContext(env()));
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// Any request should fail after timeouts have expired.
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startTime = Instant.now();
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context().getAttributes("");
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throw new RuntimeException(
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"Failed: getAttributes succeeded unexpectedly");
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}
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}
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@Override
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public boolean handleException(Exception e) {
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if (e instanceof CommunicationException) {
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Duration elapsedTime = Duration.between(startTime, Instant.now());
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if (!(((CommunicationException) e)
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.getRootCause() instanceof SocketTimeoutException)) {
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return false;
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}
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Duration expectedTime = Duration.ofMillis(TIMEOUT)
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.multipliedBy((1 << RETRIES) - 1);
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DNSTestUtils.debug("Elapsed (ms): " + elapsedTime.toMillis());
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DNSTestUtils.debug("Expected (ms): " + expectedTime.toMillis());
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// Check that elapsed time is as long as expected, and
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// not more than 50% greater.
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if (elapsedTime.compareTo(expectedTime) >= 0 &&
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elapsedTime.multipliedBy(2)
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.compareTo(expectedTime.multipliedBy(3)) <= 0) {
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System.out.println("elapsed time is as long as expected.");
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return true;
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}
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throw new RuntimeException(
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"Failed: timeout in " + elapsedTime.toMillis()
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+ " ms, expected" + expectedTime.toMillis() + "ms");
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}
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return super.handleException(e);
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}
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}
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