/*

 * Copyright (c) 2001, 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 4488458

 * @summary IPv4 and IPv6 multicasting broken on Linux

 */

import java.net.*;

import java.io.IOException;

import java.util.Enumeration;

public class Test {

    static int count = 0;

    static int failures = 0;

    void doTest(String address) throws Exception {

        boolean failed = false;

        InetAddress ia = InetAddress.getByName(address);

        count++;

        System.out.println("**********************");

        System.out.println("Test " + count + ": " + ia);

        MulticastSocket mc = new MulticastSocket();

        int port = mc.getLocalPort();

        DatagramSocket s1 = new DatagramSocket();

        byte msg[] = "Hello".getBytes();

        DatagramPacket p = new DatagramPacket(msg, msg.length);

        mc.setSoTimeout(2000);

        try {

            for (int i=0; i<2; i++) {

                System.out.println("Join: " + ia);

                mc.joinGroup(ia);

                /* packets should be received */

                for (int j=0; j<2; j++) {

                    p.setAddress(ia);

                    p.setPort(port);

                    System.out.println("Send packet to: " + ia);

                    s1.send(p);

                    try {

                        mc.receive(p);

                        System.out.println("Got packet! - Good.");

                    } catch (SocketTimeoutException e) {

                        failed = true;

                        System.out.println("Failed: No packet received within timeout!!!");

                    }

                }

                System.out.println("Leave: " + ia);

                mc.leaveGroup(ia);

                /*

                 * If there are multiple interface we might be a couple of

                 * copies still in our queue

                 */

                try {

                    while (true) {

                        mc.receive(p);

                    }

                } catch (SocketTimeoutException e) { }

                /* packets should not be received */

                p.setAddress(ia);

                p.setPort(port);

                s1.send(p);

                try {

                    mc.receive(p);

                    System.out.println("Failed: Got packet after leaving group!!!");

                    failed = true;

                } catch (SocketTimeoutException e) {

                    System.out.println("No packet received within timeout! - Good.");

                }

            }

         } catch (IOException ioe) {

            System.out.println("Failed: Unexpected exception thrown: ");

            ioe.printStackTrace();

            failed = true;

        }

        mc.close();

        s1.close();

        if (failed) {

            failures++;

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

        } else {

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

        }

    }

    void allTests() throws Exception {

        /*

         * Assume machine has IPv4 address

         */

        doTest("224.80.80.80");

        /*

         * Check if IPv6 is enabled and the scope of the addresses

         */

        boolean has_ipv6 = false;

        boolean has_siteaddress = false;

        boolean has_linklocaladdress = false;

        boolean has_globaladdress = false;

        Enumeration nifs = NetworkInterface.getNetworkInterfaces();

        while (nifs.hasMoreElements()) {

            NetworkInterface ni = (NetworkInterface)nifs.nextElement();

            Enumeration addrs = ni.getInetAddresses();

            while (addrs.hasMoreElements()) {

                InetAddress ia = (InetAddress)addrs.nextElement();

                if (ia instanceof Inet6Address) {

                    has_ipv6 = true;

                    if (ia.isLinkLocalAddress()) has_linklocaladdress = true;

                    if (ia.isSiteLocalAddress()) has_siteaddress = true;

                    if (!ia.isLinkLocalAddress() &&

                        !ia.isSiteLocalAddress() &&

                        !ia.isLoopbackAddress()) {

                        has_globaladdress = true;

                    }

                }

            }

        }

        /*

         * If IPv6 is enabled perform multicast tests with various scopes

         */

        if (has_ipv6) {

            doTest("ff01::a");

        }

        if (has_linklocaladdress) {

            doTest("ff02::a");

        }

        if (has_siteaddress) {

            doTest("ff05::a");

        }

        if (has_globaladdress) {

            doTest("ff0e::a");

        }

    }

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

        Test t = new Test();

        if (args.length == 0) {

            t.allTests();

        } else {

            for (int i=0; i<args.length; i++) {

                t.doTest(args[i]);

            }

        }

        System.out.println("**********************");

        System.out.println(count + " test(s) executed. " + failures +

                           " test(s) failed.");

        if (failures > 0) {

            throw new Exception("Test failed - see log file for details");

        }

    }

}