/*

 * Copyright (c) 2012 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.

 */

/*

 * Portions Copyright (c) 2012 IBM Corporation

 */

/* @test

 * @bug 7163874

 * @summary InetAddress.isReachable is returning false

 *          for InetAdress 0.0.0.0 and ::0

 * @run main PingThis

 * @run main/othervm -Djava.net.preferIPv4Stack=true PingThis

 */

import java.net.Inet6Address;

import java.net.InetAddress;

import java.net.NetworkInterface;

import java.util.ArrayList;

import java.util.Collections;

import java.util.Iterator;

import java.util.List;

public class PingThis {

    private static boolean hasIPv6() throws Exception {

        List<NetworkInterface> nics = Collections.list(NetworkInterface

                .getNetworkInterfaces());

        for (NetworkInterface nic : nics) {

            List<InetAddress> addrs = Collections.list(nic.getInetAddresses());

            for (InetAddress addr : addrs) {

                if (addr instanceof Inet6Address)

                    return true;

            }

        }

        return false;

    }

    public static void main(String args[]) throws Exception {

        if (System.getProperty("os.name").startsWith("Windows")) {

            return;

        }

        boolean preferIPv4Stack = "true".equals(System

                .getProperty("java.net.preferIPv4Stack"));

        List<String> addrs = new ArrayList<String>();

        InetAddress inetAddress = null;

        addrs.add("0.0.0.0");

        if (!preferIPv4Stack) {

            if (hasIPv6()) {

                addrs.add("::0");

            }

        }

        for (String addr : addrs) {

            inetAddress = InetAddress.getByName(addr);

            System.out.println("The target ip is "

                    + inetAddress.getHostAddress());

            boolean isReachable = inetAddress.isReachable(3000);

            System.out.println("the target is reachable: " + isReachable);

            if (isReachable) {

                System.out.println("Test passed ");

            } else {

                System.out.println("Test failed ");

                throw new Exception("address " + inetAddress.getHostAddress()

                        + " can not be reachable!");

            }

        }

    }

}