/* * Copyright (c) 2002, 2022, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions.
*/
/* * @test * @bug 8200151 8265309 * @summary Tests that we can set the initial UDP timeout interval and the * number of retries. * @library ../lib/ /test/lib * @modules java.base/sun.security.util * @run main Timeout
*/
publicclass Timeout extends DNSTestBase { // initial timeout = 1/4 sec privatestaticfinalint TIMEOUT = 250; // try 5 times per server privatestaticfinalint RETRIES = 5;
private Instant startTime;
public Timeout() {
setLocalServer(false);
}
publicstaticvoid main(String[] args) throws Exception { new Timeout().run(args);
}
/* * Tests that we can set the initial UDP timeout interval and the * number of retries.
*/
@Override publicvoid runTest() throws Exception { // Create a DatagramSocket and bind it to the loopback address to simulate // UDP DNS server that doesn't respond try (DatagramSocket ds = new DatagramSocket( new InetSocketAddress(InetAddress.getLoopbackAddress(), 0))) {
String allQuietUrl = URIBuilder.newBuilder()
.scheme("dns")
.loopback()
.port(ds.getLocalPort())
.build()
.toString();
env().put(Context.PROVIDER_URL, allQuietUrl);
env().put("com.sun.jndi.dns.timeout.initial", String.valueOf(TIMEOUT));
env().put("com.sun.jndi.dns.timeout.retries", String.valueOf(RETRIES));
setContext(new InitialDirContext(env()));
// Any request should fail after timeouts have expired.
startTime = Instant.now();
context().getAttributes("");
// Check that elapsed time is as long as expected, and // not more than 50% greater. if (elapsedTime.compareTo(expectedTime) >= 0 &&
elapsedTime.multipliedBy(2)
.compareTo(expectedTime.multipliedBy(3)) <= 0) {
System.out.println("elapsed time is as long as expected."); returntrue;
} thrownew RuntimeException( "Failed: timeout in " + elapsedTime.toMillis()
+ " ms, expected" + expectedTime.toMillis() + "ms");
}
returnsuper.handleException(e);
}
}
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