/* * Copyright (c) 2007, 2010, 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 4742177 * @summary Re-test IPv6 (and specifically MulticastSocket) with latest Linux & USAGI code */ import java.net.*; import java.util.*; public class SetOutgoingIf { private static int PORT = 9001; private static String osname; static boolean isWindows() { if (osname == null) osname = System.getProperty("os.name"); return osname.contains("Windows"); } private static boolean hasIPv6() throws Exception { List nics = Collections.list( NetworkInterface.getNetworkInterfaces()); for (NetworkInterface nic : nics) { List 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 (isWindows()) { System.out.println("The test only run on non-Windows OS. Bye."); return; } if (!hasIPv6()) { System.out.println("No IPv6 available. Bye."); return; } // We need 2 or more network interfaces to run the test // List netIfs = new ArrayList(); int index = 1; for (NetworkInterface nic : Collections.list(NetworkInterface.getNetworkInterfaces())) { // we should use only network interfaces with multicast support which are in "up" state if (!nic.isLoopback() && nic.supportsMulticast() && nic.isUp()) { NetIf netIf = NetIf.create(nic); // now determine what (if any) type of addresses are assigned to this interface for (InetAddress addr : Collections.list(nic.getInetAddresses())) { if (addr.isAnyLocalAddress()) continue; System.out.println(" addr " + addr); if (addr instanceof Inet4Address) { netIf.ipv4Address(true); } else if (addr instanceof Inet6Address) { netIf.ipv6Address(true); } } if (netIf.ipv4Address() || netIf.ipv6Address()) { netIf.index(index++); netIfs.add(netIf); debug("Using: " + nic); } } } if (netIfs.size() <= 1) { System.out.println("Need 2 or more network interfaces to run. Bye."); return; } // We will send packets to one ipv4, and one ipv6 // multicast group using each network interface :- // 224.1.1.1 --| // ff02::1:1 --|--> using network interface #1 // 224.1.2.1 --| // ff02::1:2 --|--> using network interface #2 // and so on. // for (NetIf netIf : netIfs) { int NetIfIndex = netIf.index(); List groups = new ArrayList(); if (netIf.ipv4Address()) { InetAddress groupv4 = InetAddress.getByName("224.1." + NetIfIndex + ".1"); groups.add(groupv4); } if (netIf.ipv6Address()) { InetAddress groupv6 = InetAddress.getByName("ff02::1:" + NetIfIndex); groups.add(groupv6); } debug("Adding " + groups + " groups for " + netIf.nic().getName()); netIf.groups(groups); // use a separated thread to send to those 2 groups Thread sender = new Thread(new Sender(netIf, groups, PORT)); sender.setDaemon(true); // we want sender to stop when main thread exits sender.start(); } // try to receive on each group, then check if the packet comes // from the expected network interface // byte[] buf = new byte[1024]; for (NetIf netIf : netIfs) { NetworkInterface nic = netIf.nic(); for (InetAddress group : netIf.groups()) { MulticastSocket mcastsock = new MulticastSocket(PORT); mcastsock.setSoTimeout(5000); // 5 second DatagramPacket packet = new DatagramPacket(buf, 0, buf.length); // the interface supports the IP multicast group debug("Joining " + group + " on " + nic.getName()); mcastsock.joinGroup(new InetSocketAddress(group, PORT), nic); try { mcastsock.receive(packet); debug("received packet on " + packet.getAddress()); } catch (Exception e) { // test failed if any exception throw new RuntimeException(e); } // now check which network interface this packet comes from NetworkInterface from = NetworkInterface.getByInetAddress(packet.getAddress()); NetworkInterface shouldbe = nic; if (!from.equals(shouldbe)) { System.out.println("Packets on group " + group + " should come from " + shouldbe.getName() + ", but came from " + from.getName()); //throw new RuntimeException("Test failed."); } mcastsock.leaveGroup(new InetSocketAddress(group, PORT), nic); } } } private static boolean debug = true; static void debug(String message) { if (debug) System.out.println(message); } } class Sender implements Runnable { private NetIf netIf; private List groups; private int port; public Sender(NetIf netIf, List groups, int port) { this.netIf = netIf; this.groups = groups; this.port = port; } public void run() { try { MulticastSocket mcastsock = new MulticastSocket(); mcastsock.setNetworkInterface(netIf.nic()); List packets = new LinkedList(); byte[] buf = "hello world".getBytes(); for (InetAddress group : groups) { packets.add(new DatagramPacket(buf, buf.length, new InetSocketAddress(group, port))); } for (;;) { for (DatagramPacket packet : packets) mcastsock.send(packet); Thread.sleep(1000); // sleep 1 second } } catch (Exception e) { throw new RuntimeException(e); } } } @SuppressWarnings("unchecked") class NetIf { private boolean ipv4Address; //false private boolean ipv6Address; //false private int index; List groups = Collections.EMPTY_LIST; private final NetworkInterface nic; private NetIf(NetworkInterface nic) { this.nic = nic; } static NetIf create(NetworkInterface nic) { return new NetIf(nic); } NetworkInterface nic() { return nic; } boolean ipv4Address() { return ipv4Address; } void ipv4Address(boolean ipv4Address) { this.ipv4Address = ipv4Address; } boolean ipv6Address() { return ipv6Address; } void ipv6Address(boolean ipv6Address) { this.ipv6Address = ipv6Address; } int index() { return index; } void index(int index) { this.index = index; } List groups() { return groups; } void groups(List groups) { this.groups = groups; } }