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/*
* Copyright (c) 2007, 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.
*/
/* @test
* @bug 6598160
* @summary Windows IPv6 Socket implementation doesn't set the handle to not inherit
* @author Chris Hegarty
* @run main InheritHandle
* @run main/othervm -Djava.net.preferIPv4Stack=true InheritHandle
*/
import java.net.BindException;
import java.net.ServerSocket;
import java.io.File;
import java.io.IOException;
/**
* This test is only really applicable to Windows machines that are running IPv6, but
* it should still pass on other platforms so we can just run it.
*/
public class InheritHandle
{
static String java = System.getProperty("java.home") + File.separator +
"bin" + File.separator + "java";
public static void main(String[] args) {
if (args.length == 1) {
doWait();
} else {
startTest();
}
}
static void startTest() {
ServerSocket ss;
int port;
Process process;
// create a ServerSocket listening on any port
try {
ss = new ServerSocket(0);
port = ss.getLocalPort();
System.out.println("First ServerSocket listening on port " + port);
} catch (IOException e) {
System.out.println("Cannot create ServerSocket");
e.printStackTrace();
return;
}
// create another java process that simply waits. If the bug is present this
// process will inherit the native IPv6 handle for ss and cause the second
// ServerSocket constructor to throw a BindException
try {
process = Runtime.getRuntime().exec(java + " InheritHandle -doWait");
} catch (IOException ioe) {
System.out.println("Cannot create process");
ioe.printStackTrace();
try {
ss.close();
} catch (IOException e) {
e.printStackTrace();
}
return;
}
// Allow some time for the process to get started
try {
System.out.println("waiting...");
Thread.sleep(2 * 1000);
System.out.println("Now close the socket and try to create another" +
" one listening on the same port");
ss.close();
int retries = 0;
while (retries < 5) {
try (ServerSocket s = new ServerSocket(port);) {
System.out.println("Second ServerSocket created successfully");
break;
} catch (BindException e) {
System.out.println("BindException \"" + e.getMessage() + "\", retrying...");
Thread.sleep(100L);
retries ++;
continue;
}
}
} catch (InterruptedException ie) {
} catch (IOException ioe) {
throw new RuntimeException("Failed: " + ioe);
} finally {
process.destroy();
}
System.out.println("OK");
}
static void doWait() {
try {
Thread.sleep(200 * 1000);
} catch (InterruptedException ie) {
}
}
}
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