/**
* Copyright (C) 2009-2014 Typesafe Inc. <http://www.typesafe.com>
*/
package docs.io;
import akka.actor.ActorRef;
import akka.actor.ActorSystem;
import akka.actor.Props;
import akka.io.Udp;
import akka.testkit.JavaTestKit;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.Enumeration;
import java.util.Random;
public class JavaUdpMulticastTest {
static ActorSystem system;
@BeforeClass
public static void setup() {
system = ActorSystem.create("JavaUdpMulticastTest");
}
@Test
public void testUdpMulticast() throws Exception {
new JavaTestKit(system) {{
NetworkInterface ipv6Iface = null;
for (Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces(); interfaces.hasMoreElements() && ipv6Iface == null;) {
NetworkInterface interf = interfaces.nextElement();
for (Enumeration<InetAddress> addresses = interf.getInetAddresses(); addresses.hasMoreElements() && ipv6Iface == null;) {
InetAddress address = addresses.nextElement();
if (address instanceof Inet6Address) {
ipv6Iface = interf;
}
}
}
// host assigned link local multicast address http://tools.ietf.org/html/rfc3307#section-4.3.2
// generate a random 32 bit multicast address with the high order bit set
final String randomAddress = Long.toHexString(((long) Math.abs(new Random().nextInt())) | (1L << 31)).toUpperCase();
final StringBuilder groupBuilder = new StringBuilder("FF02:");
for (int i = 0; i < 2; i += 1) {
groupBuilder.append(":");
groupBuilder.append(randomAddress.subSequence(i * 4, i * 4 + 4));
}
final String group = groupBuilder.toString();
final Integer port = TestUtils.temporaryUdpIpv6Port(ipv6Iface);
final String msg = "ohi";
final ActorRef sink = getRef();
final String iface = ipv6Iface.getName();
final ActorRef listener = system.actorOf(Props.create(JavaUdpMulticast.Listener.class, iface, group, port, sink));
expectMsgClass(Udp.Bound.class);
final ActorRef sender = system.actorOf(Props.create(JavaUdpMulticast.Sender.class, iface, group, port, msg));
expectMsgEquals(msg);
// unbind
system.stop(listener);
}};
}
@AfterClass
public static void tearDown() {
JavaTestKit.shutdownActorSystem(system);
system = null;
}
}