/*

 * Copyright (c) 2004, 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 5087907

 * @summary  InetAddress.getAllByName does not obey setting of java.net.preferIPv6Addresses

 * @run main/othervm -Djava.net.preferIPv6Addresses=false B5087907

 * @run main/othervm -Djava.net.preferIPv6Addresses=true B5087907

 * @run main/othervm B5087907

 */

import java.net.*;

public class B5087907 {

    public static void main(String args[]) {

        InetAddress lh = null;

        InetAddress addrs[] = null;

        try {

            lh = InetAddress.getByName("localhost");

            addrs = InetAddress.getAllByName("localhost");

        } catch (UnknownHostException e) {

            System.out.println ("Cant lookup localhost. cant run test");

            return;

        }

        boolean hasIPv4Address = false;

        boolean hasIPv6Address = false;

        for (InetAddress addr: addrs) {

            if (addr instanceof Inet4Address) {

                hasIPv4Address = true;

            }

            if (addr instanceof Inet6Address) {

                hasIPv6Address = true;

            }

            if (hasIPv4Address && hasIPv6Address) {

                break;

            }

        }

        String prop = System.getProperty("java.net.preferIPv6Addresses");

        boolean preferIPv6Addresses = (prop == null) ? false : prop.equals("true");

        System.out.println("java.net.preferIPv6Addresses: " + preferIPv6Addresses);

        System.out.println("localhost resolves to:");

        for (InetAddress addr: addrs) {

            System.out.println("  " + addr);

        }

        System.out.println("InetAddres.getByName returned: " + lh);

        boolean failed = false;

        if (preferIPv6Addresses && hasIPv6Address) {

            if (!(lh instanceof Inet6Address)) failed = true;

        }

        if (!preferIPv6Addresses && hasIPv4Address) {

            if (!(lh instanceof Inet4Address)) failed = true;

        }

        if (failed) {

            throw new RuntimeException("Test failed!");

        }

    }

}