/*
* Copyright 2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.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.concurrent.*;
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<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 (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<NetworkInterface> nics = new ArrayList<NetworkInterface>();
for (NetworkInterface nic : Collections.list(NetworkInterface.getNetworkInterfaces())) {
if (!nic.isLoopback())
nics.add(nic);
}
if (nics.size() <= 1) {
System.out.println("Need 2 or more network interfaces to run. Bye.");
return;
}
// We will send packets to one ipv4, one ipv4-mapped, and one ipv6
// multicast group using each network interface :-
// 224.1.1.1 --|
// ::ffff:224.1.1.2 -----> using network interface #1
// ff02::1:1 --|
// 224.1.2.1 --|
// ::ffff:224.1.2.2 -----> using network interface #2
// ff02::1:2 --|
// and so on.
//
List<InetAddress> groups = new ArrayList<InetAddress>();
for (int i = 0; i < nics.size(); i++) {
InetAddress groupv4 = InetAddress.getByName("224.1." + (i+1) + ".1");
InetAddress groupv4mapped = InetAddress.getByName("::ffff:224.1." + (i+1) + ".2");
InetAddress groupv6 = InetAddress.getByName("ff02::1:" + (i+1));
groups.add(groupv4);
groups.add(groupv4mapped);
groups.add(groupv6);
// use a separated thread to send to those 3 groups
Thread sender = new Thread(new Sender(nics.get(i), groupv4, groupv4mapped, groupv6, 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 (InetAddress group : groups) {
MulticastSocket mcastsock = new MulticastSocket(PORT);
mcastsock.setSoTimeout(5000); // 5 second
DatagramPacket packet = new DatagramPacket(buf, 0, buf.length);
mcastsock.joinGroup(new InetSocketAddress(group, PORT), nics.get(groups.indexOf(group) / 3));
try {
mcastsock.receive(packet);
} 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 = nics.get(groups.indexOf(group) / 3);
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), nics.get(groups.indexOf(group) / 3));
}
}
}
class Sender implements Runnable {
private NetworkInterface nic;
private InetAddress group1;
private InetAddress group2;
private InetAddress group3;
private int port;
public Sender(NetworkInterface nic,
InetAddress groupv4, InetAddress groupv4mapped, InetAddress groupv6,
int port) {
this.nic = nic;
group1 = groupv4;
group2 = groupv4mapped;
group3 = groupv6;
this.port = port;
}
public void run() {
try {
MulticastSocket mcastsock = new MulticastSocket();
mcastsock.setNetworkInterface(nic);
byte[] buf = "hello world".getBytes();
DatagramPacket packet1 = new DatagramPacket(buf, buf.length,
new InetSocketAddress(group1, port));
DatagramPacket packet2 = new DatagramPacket(buf, buf.length,
new InetSocketAddress(group2, port));
DatagramPacket packet3 = new DatagramPacket(buf, buf.length,
new InetSocketAddress(group3, port));
for (;;) {
mcastsock.send(packet1);
mcastsock.send(packet2);
mcastsock.send(packet3);
Thread.currentThread().sleep(1000); // sleep 1 second
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}