channels/DatagramChannel/MulticastSendReceiveTests.java

	MulticastSendReceiveTests.java revision 2362
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉/*
0c27b3fe77ac1d5094ba3521e8142d9e7973133fMark Andrews * Copyright (c) 2007, 2008, Oracle and/or its affiliates. All rights reserved.
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0c27b3fe77ac1d5094ba3521e8142d9e7973133fMark Andrews *
0c27b3fe77ac1d5094ba3521e8142d9e7973133fMark Andrews * This code is free software; you can redistribute it and/or modify it
0c27b3fe77ac1d5094ba3521e8142d9e7973133fMark Andrews * under the terms of the GNU General Public License version 2 only, as
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉 * published by the Free Software Foundation.
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉 *
28a8f5b0de57d269cf2845c69cb6abe18cbd3b3aMark Andrews * This code is distributed in the hope that it will be useful, but WITHOUT
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉 * version 2 for more details (a copy is included in the LICENSE file that
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉 * accompanied this code).
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉 *
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉 * You should have received a copy of the GNU General Public License version
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉 * 2 along with this work; if not, write to the Free Software Foundation,
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉 *
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉 * or visit www.oracle.com if you need additional information or have any
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉 * questions.
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉 */
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉/* @test
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉 * @bug 4527345
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉 * @summary Unit test for DatagramChannel's multicast support
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman * @build MulticastSendReceiveTests NetworkConfiguration
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman * @run main MulticastSendReceiveTests
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman */
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉import java.nio.ByteBuffer;
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉import java.nio.channels.*;
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉import java.net.*;
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Huntimport java.util.*;
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Huntimport java.io.IOException;
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Huntpublic class MulticastSendReceiveTests {
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman    static Random rand = new Random();
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt    /**
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman     * Send datagram from given local address to given multicast
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman     * group.
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman     */
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt    static int sendDatagram(InetAddress local,
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt                            NetworkInterface nif,
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt                            InetAddress group,
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt                            int port)
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt        throws IOException
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt    {
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt        ProtocolFamily family = (group instanceof Inet6Address) ?
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt            StandardProtocolFamily.INET6 : StandardProtocolFamily.INET;
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt        DatagramChannel dc = DatagramChannel.open(family)
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt            .bind(new InetSocketAddress(local, 0))
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt            .setOption(StandardSocketOption.IP_MULTICAST_IF, nif);
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt        int id = rand.nextInt();
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt        byte[] msg = Integer.toString(id).getBytes("UTF-8");
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt        ByteBuffer buf = ByteBuffer.wrap(msg);
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt        System.out.format("Send message from %s -> group %s (id=0x%x)\n",
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt            local.getHostAddress(), group.getHostAddress(), id);
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt        dc.send(buf, new InetSocketAddress(group, port));
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt        dc.close();
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt        return id;
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt    }
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt    /**
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt     * Wait (with timeout) for datagram.
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt     *
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt     * @param   expectedSender - expected sender address, or
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt     *                           null if no datagram expected
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt     * @param   id - expected id of datagram
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman     */
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉    static void receiveDatagram(DatagramChannel dc,
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman                                InetAddress expectedSender,
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman                                int id)
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman        throws IOException
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉    {
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        Selector sel = Selector.open();
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        dc.configureBlocking(false);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        dc.register(sel, SelectionKey.OP_READ);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        ByteBuffer buf = ByteBuffer.allocateDirect(100);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman        try {
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman            for (;;) {
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman                System.out.println("Waiting to receive message");
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman                sel.select(5*1000);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                SocketAddress sa = dc.receive(buf);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman                // no datagram received
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                if (sa == null) {
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                    if (expectedSender != null) {
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman                        throw new RuntimeException("Expected message not recieved");
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman                    }
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman                    System.out.println("No message received (correct)");
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                    return;
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                }
99056063905a9273ec59cf477ae747e0490182b7Mukund Sivaraman
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                // datagram received
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                InetAddress sender = ((InetSocketAddress)sa).getAddress();
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                buf.flip();
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                byte[] bytes = new byte[buf.remaining()];
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                buf.get(bytes);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                int receivedId = Integer.parseInt(new String(bytes));
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                System.out.format("Received message from %s (id=0x%x)\n",
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                    sender, receivedId);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                if (expectedSender == null) {
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                    if (receivedId == id)
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                        throw new RuntimeException("Message not expected");
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt                    System.out.println("Message ignored (has wrong id)");
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                } else {
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                    if (sender.equals(expectedSender)) {
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                        System.out.println("Message expected");
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                        return;
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                    }
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                    System.out.println("Message ignored (wrong sender)");
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                }
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                sel.selectedKeys().clear();
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                buf.rewind();
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            }
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        } finally {
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            sel.close();
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        }
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉    }
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉    /**
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉     * Exercise multicast send/receive on given group/interface
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉     */
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉    static void test(NetworkInterface nif, InetAddress group, InetAddress source)
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        throws IOException
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉    {
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        ProtocolFamily family = (group instanceof Inet6Address) ?
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            StandardProtocolFamily.INET6 : StandardProtocolFamily.INET;
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        System.out.format("create channel to %s socket\n", family.name());
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        DatagramChannel dc = DatagramChannel.open(family)
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            .setOption(StandardSocketOption.SO_REUSEADDR, true)
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            .bind(new InetSocketAddress(0));
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        // join group
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        System.out.format("join %s @ %s\n", group.getHostAddress(),
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            nif.getName());
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        MembershipKey key = dc.join(group, nif);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        // send message to group
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        int port = ((InetSocketAddress)dc.getLocalAddress()).getPort();
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        int id = sendDatagram(source, nif, group, port);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        // receive message and check id matches
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        receiveDatagram(dc, source, id);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        // exclude-mode filtering
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        try {
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt            System.out.format("block %s\n", source.getHostAddress());
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            // may throw UOE
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            key.block(source);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            id = sendDatagram(source, nif, group, port);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            receiveDatagram(dc, null, id);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            // unblock source, send message, message should be received
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            System.out.format("unblock %s\n", source.getHostAddress());
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            key.unblock(source);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            id = sendDatagram(source, nif, group, port);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            receiveDatagram(dc, source, id);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        } catch (UnsupportedOperationException x) {
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            System.out.println("Exclude-mode filtering not supported!");
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        }
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        key.drop();
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        // include-mode filtering
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
821ff5e8fa1df2e09fea157ee3e298eef6cf4ec9Evan Hunt        InetAddress bogus = (group instanceof Inet6Address) ?
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            InetAddress.getByName("fe80::1234") :
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            InetAddress.getByName("1.2.3.4");
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        System.out.format("join %s @ %s only-source %s\n", group.getHostAddress(),
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            nif.getName(), bogus.getHostAddress());
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        try {
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            // may throw UOE
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            key = dc.join(group, nif, bogus);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            id = sendDatagram(source, nif, group, port);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            receiveDatagram(dc, null, id);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            System.out.format("join %s @ %s only-source %s\n", group.getHostAddress(),
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉                nif.getName(), source.getHostAddress());
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            key = dc.join(group, nif, source);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            id = sendDatagram(source, nif, group, port);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            receiveDatagram(dc, source, id);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        } catch (UnsupportedOperationException x) {
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            System.out.println("Include-mode filtering not supported!");
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        }
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        // done
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        dc.close();
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉    }
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉    public static void main(String[] args) throws IOException {
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        NetworkConfiguration config = NetworkConfiguration.probe();
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        // multicast groups used for the test
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        InetAddress ip4Group = InetAddress.getByName("225.4.5.6");
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        InetAddress ip6Group = InetAddress.getByName("ff02::a");
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        for (NetworkInterface nif: config.ip4Interfaces()) {
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            InetAddress source = config.ip4Addresses(nif).iterator().next();
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            test(nif, ip4Group, source);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        }
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        for (NetworkInterface nif: config.ip6Interfaces()) {
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            InetAddress source = config.ip6Addresses(nif).iterator().next();
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉            test(nif, ip6Group, source);
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉        }
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉    }
d9059b0c38bd630c367d81424d72b1308cd74b04Tatuya JINMEI 神明達哉}
10dd5f62f27b050c0e51d85cbd97e2f5925eb9acMukund Sivaraman