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/*
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* Copyright 2007 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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/*
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* @test
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* @bug 4742177
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* @summary Re-test IPv6 (and specifically MulticastSocket) with latest Linux & USAGI code
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*/
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import java.net.*;
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import java.util.concurrent.*;
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import java.util.*;
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public class SetOutgoingIf {
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private static int PORT = 9001;
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private static String osname;
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static boolean isWindows() {
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if (osname == null)
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osname = System.getProperty("os.name");
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return osname.contains("Windows");
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}
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private static boolean hasIPv6() throws Exception {
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List<NetworkInterface> nics = Collections.list(
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NetworkInterface.getNetworkInterfaces());
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for (NetworkInterface nic : nics) {
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List<InetAddress> addrs = Collections.list(nic.getInetAddresses());
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for (InetAddress addr : addrs) {
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if (addr instanceof Inet6Address)
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return true;
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}
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}
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return false;
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}
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public static void main(String[] args) throws Exception {
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if (isWindows()) {
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System.out.println("The test only run on non-Windows OS. Bye.");
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return;
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}
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if (!hasIPv6()) {
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System.out.println("No IPv6 available. Bye.");
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return;
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}
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// We need 2 or more network interfaces to run the test
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//
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List<NetworkInterface> nics = new ArrayList<NetworkInterface>();
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for (NetworkInterface nic : Collections.list(NetworkInterface.getNetworkInterfaces())) {
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// we should use only network interfaces with multicast support which are in "up" state
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if (!nic.isLoopback() && nic.supportsMulticast() && nic.isUp())
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nics.add(nic);
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}
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if (nics.size() <= 1) {
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System.out.println("Need 2 or more network interfaces to run. Bye.");
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return;
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}
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// We will send packets to one ipv4, one ipv4-mapped, and one ipv6
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// multicast group using each network interface :-
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// 224.1.1.1 --|
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// ::ffff:224.1.1.2 -----> using network interface #1
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// ff02::1:1 --|
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// 224.1.2.1 --|
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// ::ffff:224.1.2.2 -----> using network interface #2
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// ff02::1:2 --|
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// and so on.
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//
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List<InetAddress> groups = new ArrayList<InetAddress>();
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for (int i = 0; i < nics.size(); i++) {
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InetAddress groupv4 = InetAddress.getByName("224.1." + (i+1) + ".1");
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InetAddress groupv4mapped = InetAddress.getByName("::ffff:224.1." + (i+1) + ".2");
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InetAddress groupv6 = InetAddress.getByName("ff02::1:" + (i+1));
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groups.add(groupv4);
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groups.add(groupv4mapped);
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groups.add(groupv6);
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// use a separated thread to send to those 3 groups
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Thread sender = new Thread(new Sender(nics.get(i), groupv4, groupv4mapped, groupv6, PORT));
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sender.setDaemon(true); // we want sender to stop when main thread exits
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sender.start();
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}
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// try to receive on each group, then check if the packet comes
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// from the expected network interface
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//
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byte[] buf = new byte[1024];
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for (InetAddress group : groups) {
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MulticastSocket mcastsock = new MulticastSocket(PORT);
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mcastsock.setSoTimeout(5000); // 5 second
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DatagramPacket packet = new DatagramPacket(buf, 0, buf.length);
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mcastsock.joinGroup(new InetSocketAddress(group, PORT), nics.get(groups.indexOf(group) / 3));
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try {
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mcastsock.receive(packet);
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} catch (Exception e) {
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// test failed if any exception
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throw new RuntimeException(e);
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}
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// now check which network interface this packet comes from
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NetworkInterface from = NetworkInterface.getByInetAddress(packet.getAddress());
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NetworkInterface shouldbe = nics.get(groups.indexOf(group) / 3);
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if (!from.equals(shouldbe)) {
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System.out.println("Packets on group "
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+ group + " should come from "
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+ shouldbe.getName() + ", but came from "
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+ from.getName());
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//throw new RuntimeException("Test failed.");
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}
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mcastsock.leaveGroup(new InetSocketAddress(group, PORT), nics.get(groups.indexOf(group) / 3));
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}
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}
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}
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class Sender implements Runnable {
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private NetworkInterface nic;
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private InetAddress group1;
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private InetAddress group2;
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private InetAddress group3;
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private int port;
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public Sender(NetworkInterface nic,
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InetAddress groupv4, InetAddress groupv4mapped, InetAddress groupv6,
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int port) {
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this.nic = nic;
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group1 = groupv4;
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group2 = groupv4mapped;
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group3 = groupv6;
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this.port = port;
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}
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public void run() {
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try {
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MulticastSocket mcastsock = new MulticastSocket();
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mcastsock.setNetworkInterface(nic);
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byte[] buf = "hello world".getBytes();
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DatagramPacket packet1 = new DatagramPacket(buf, buf.length,
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new InetSocketAddress(group1, port));
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DatagramPacket packet2 = new DatagramPacket(buf, buf.length,
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new InetSocketAddress(group2, port));
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DatagramPacket packet3 = new DatagramPacket(buf, buf.length,
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new InetSocketAddress(group3, port));
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for (;;) {
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mcastsock.send(packet1);
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mcastsock.send(packet2);
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mcastsock.send(packet3);
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Thread.currentThread().sleep(1000); // sleep 1 second
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}
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} catch (Exception e) {
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throw new RuntimeException(e);
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}
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}
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}
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