106 lines
3.8 KiB
Java
106 lines
3.8 KiB
Java
/*
|
|
* Copyright (c) 2002, 2018, 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.
|
|
*/
|
|
|
|
import javax.naming.CommunicationException;
|
|
import javax.naming.Context;
|
|
import javax.naming.directory.InitialDirContext;
|
|
|
|
/*
|
|
* @test
|
|
* @bug 8200151
|
|
* @summary Tests that when a DNS server is unreachable and an ICMP Destination
|
|
* Unreachable packet is received, we fail quickly and don't wait for
|
|
* the full timeout interval. This could be caused, for example, by a
|
|
* dead DNS server or a flakey router.
|
|
* @library ../lib/
|
|
* @modules java.base/sun.security.util
|
|
* @run main PortUnreachable
|
|
*/
|
|
|
|
public class PortUnreachable extends DNSTestBase {
|
|
|
|
// Port 25 is the SMTP port, used here to simulate a dead DNS server.
|
|
private static final int PORT = 25;
|
|
|
|
// Threshold in ms for elapsed time of request failed. Normally, it should
|
|
// be very quick, but consider to different platform and test machine
|
|
// performance, here we define 1000 ms as threshold which acceptable for
|
|
// this test.
|
|
private static final int THRESHOLD = 1000;
|
|
|
|
private long startTime;
|
|
|
|
public PortUnreachable() {
|
|
setLocalServer(false);
|
|
}
|
|
|
|
public static void main(String[] args) throws Exception {
|
|
new PortUnreachable().run(args);
|
|
}
|
|
|
|
/*
|
|
* Tests that when a DNS server is unreachable and an ICMP Destination
|
|
* Unreachable packet is received, we fail quickly and don't wait for
|
|
* the full timeout interval.
|
|
*/
|
|
@Override
|
|
public void runTest() throws Exception {
|
|
String deadServerUrl = "dns://localhost:" + PORT;
|
|
env().put(Context.PROVIDER_URL, deadServerUrl);
|
|
setContext(new InitialDirContext(env()));
|
|
|
|
// Any request should fail quickly.
|
|
startTime = System.currentTimeMillis();
|
|
context().getAttributes("");
|
|
|
|
// You're running a DNS server on your SMTP port?
|
|
throw new RuntimeException(
|
|
"Failed: getAttributes succeeded unexpectedly");
|
|
}
|
|
|
|
@Override
|
|
public boolean handleException(Exception e) {
|
|
if (e instanceof CommunicationException) {
|
|
long elapsedTime = System.currentTimeMillis() - startTime;
|
|
|
|
Throwable cause = ((CommunicationException) e).getRootCause();
|
|
if (!(cause instanceof java.net.PortUnreachableException)) {
|
|
DNSTestUtils.debug("Bug 7164518 can cause this failure on mac");
|
|
return false;
|
|
}
|
|
|
|
DNSTestUtils.debug("Elapsed (ms): " + elapsedTime);
|
|
|
|
// Check that elapsed time is less than defined threshold.
|
|
if (elapsedTime < THRESHOLD) {
|
|
return true;
|
|
}
|
|
|
|
throw new RuntimeException("Failed: call took " + elapsedTime
|
|
+ " ms, expected less than " + THRESHOLD + " ms");
|
|
}
|
|
|
|
return super.handleException(e);
|
|
}
|
|
}
|