/*
* Copyright 2012 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.testsuite.transport.socket;
import io.netty.bootstrap.Bootstrap;
import io.netty.buffer.Unpooled;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelOption;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.channel.socket.DatagramChannel;
import io.netty.channel.socket.DatagramPacket;
import io.netty.channel.socket.oio.OioDatagramChannel;
import io.netty.util.NetUtil;
import org.junit.Test;
import java.net.InetSocketAddress;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import static org.junit.Assert.*;
public class DatagramMulticastTest extends AbstractDatagramTest {
@Test
public void testMulticast() throws Throwable {
run();
}
public void testMulticast(Bootstrap sb, Bootstrap cb) throws Throwable {
MulticastTestHandler mhandler = new MulticastTestHandler();
sb.handler(new SimpleChannelInboundHandler<Object>() {
@Override
public void messageReceived(ChannelHandlerContext ctx, Object msg) throws Exception {
// Nothing will be sent.
}
});
cb.handler(mhandler);
sb.option(ChannelOption.IP_MULTICAST_IF, NetUtil.LOOPBACK_IF);
sb.option(ChannelOption.SO_REUSEADDR, true);
cb.option(ChannelOption.IP_MULTICAST_IF, NetUtil.LOOPBACK_IF);
cb.option(ChannelOption.SO_REUSEADDR, true);
cb.localAddress(addr.getPort());
Channel sc = sb.bind().sync().channel();
if (sc instanceof OioDatagramChannel) {
// skip the test for OIO, as it fails because of
// No route to host which makes no sense.
// Maybe a JDK bug ?
sc.close().awaitUninterruptibly();
return;
}
DatagramChannel cc = (DatagramChannel) cb.bind().sync().channel();
String group = "230.0.0.1";
InetSocketAddress groupAddress = new InetSocketAddress(group, addr.getPort());
cc.joinGroup(groupAddress, NetUtil.LOOPBACK_IF).sync();
sc.writeAndFlush(new DatagramPacket(Unpooled.copyInt(1), groupAddress)).sync();
assertTrue(mhandler.await());
// leave the group
cc.leaveGroup(groupAddress, NetUtil.LOOPBACK_IF).sync();
// sleep a second to make sure we left the group
Thread.sleep(1000);
// we should not receive a message anymore as we left the group before
sc.writeAndFlush(new DatagramPacket(Unpooled.copyInt(1), groupAddress)).sync();
mhandler.await();
sc.close().awaitUninterruptibly();
cc.close().awaitUninterruptibly();
}
private static final class MulticastTestHandler extends SimpleChannelInboundHandler<DatagramPacket> {
private final CountDownLatch latch = new CountDownLatch(1);
private boolean done;
private volatile boolean fail;
@Override
protected void messageReceived(ChannelHandlerContext ctx, DatagramPacket msg) throws Exception {
if (done) {
fail = true;
}
assertEquals(1, msg.content().readInt());
latch.countDown();
// mark the handler as done as we only are supposed to receive one message
done = true;
}
public boolean await() throws Exception {
boolean success = latch.await(10, TimeUnit.SECONDS);
if (fail) {
// fail if we receive an message after we are done
fail();
}
return success;
}
}
}