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ActiveMQ example source code file (MulticastTransport.java)

This example ActiveMQ source code file (MulticastTransport.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - ActiveMQ tags/keywords

default_idle_time, inetaddress, inetsocketaddress, io, ioexception, ioexception, logger, multicastsocket, multicastsocket, multicasttransport, net, network, string, string, unknownhostexception, unknownhostexception, uri

The ActiveMQ MulticastTransport.java source code

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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 org.apache.activemq.transport.multicast;

import java.io.IOException;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.MulticastSocket;
import java.net.SocketAddress;
import java.net.SocketException;
import java.net.URI;
import java.net.UnknownHostException;

import org.apache.activemq.openwire.OpenWireFormat;
import org.apache.activemq.transport.udp.CommandChannel;
import org.apache.activemq.transport.udp.CommandDatagramSocket;
import org.apache.activemq.transport.udp.DatagramHeaderMarshaller;
import org.apache.activemq.transport.udp.UdpTransport;
import org.apache.activemq.util.ServiceStopper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * A multicast based transport.
 * 
 * 
 */
public class MulticastTransport extends UdpTransport {

    private static final Logger LOG = LoggerFactory.getLogger(MulticastTransport.class);

    private static final int DEFAULT_IDLE_TIME = 5000;

    private MulticastSocket socket;
    private InetAddress mcastAddress;
    private int mcastPort;
    private int timeToLive = 1;
    private boolean loopBackMode;
    private long keepAliveInterval = DEFAULT_IDLE_TIME;

    public MulticastTransport(OpenWireFormat wireFormat, URI remoteLocation) throws UnknownHostException, IOException {
        super(wireFormat, remoteLocation);
    }

    public long getKeepAliveInterval() {
        return keepAliveInterval;
    }

    public void setKeepAliveInterval(long keepAliveInterval) {
        this.keepAliveInterval = keepAliveInterval;
    }

    public boolean isLoopBackMode() {
        return loopBackMode;
    }

    public void setLoopBackMode(boolean loopBackMode) {
        this.loopBackMode = loopBackMode;
    }

    public int getTimeToLive() {
        return timeToLive;
    }

    public void setTimeToLive(int timeToLive) {
        this.timeToLive = timeToLive;
    }

    protected String getProtocolName() {
        return "Multicast";
    }

    protected String getProtocolUriScheme() {
        return "multicast://";
    }

    protected void bind(DatagramSocket socket, SocketAddress localAddress) throws SocketException {
    }

    protected void doStop(ServiceStopper stopper) throws Exception {
        super.doStop(stopper);
        if (socket != null) {
            try {
                socket.leaveGroup(getMulticastAddress());
            } catch (IOException e) {
                stopper.onException(this, e);
            }
            socket.close();
        }
    }

    protected CommandChannel createCommandChannel() throws IOException {
        socket = new MulticastSocket(mcastPort);
        socket.setLoopbackMode(loopBackMode);
        socket.setTimeToLive(timeToLive);

        LOG.debug("Joining multicast address: " + getMulticastAddress());
        socket.joinGroup(getMulticastAddress());
        socket.setSoTimeout((int)keepAliveInterval);

        return new CommandDatagramSocket(this, getWireFormat(), getDatagramSize(), getTargetAddress(), createDatagramHeaderMarshaller(), getSocket());
    }

    protected InetAddress getMulticastAddress() {
        return mcastAddress;
    }

    protected MulticastSocket getSocket() {
        return socket;
    }

    protected void setSocket(MulticastSocket socket) {
        this.socket = socket;
    }

    protected InetSocketAddress createAddress(URI remoteLocation) throws UnknownHostException, IOException {
        this.mcastAddress = InetAddress.getByName(remoteLocation.getHost());
        this.mcastPort = remoteLocation.getPort();
        return new InetSocketAddress(mcastAddress, mcastPort);
    }

    protected DatagramHeaderMarshaller createDatagramHeaderMarshaller() {
        return new MulticastDatagramHeaderMarshaller("udp://dummyHostName:" + getPort());
    }

}

Other ActiveMQ examples (source code examples)

Here is a short list of links related to this ActiveMQ MulticastTransport.java source code file:

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