simplemulticastclient.java

来自「这是一个以JAVA编写的程序,本人还没有试过,是一个简单的温度控制系统」· Java 代码 · 共 44 行

package net.sf.dz.pnp.custom;

import java.io.IOException;
import java.net.DatagramPacket;
import java.net.InetAddress;
import java.net.MulticastSocket;

import org.freehold.jukebox.logger.LogChannel;
import net.sf.dz.pnp.MulticastClient;
import net.sf.dz.pnp.MulticastEvent;
import net.sf.dz.util.MessageDigestFactory;

/**
 * @author Copyright &copy; <a href="mailto:[e-mail]">Vadim Tkachenko</a> 2004
 * @version $Id: SimpleMulticastClient.java,v 1.2 2004/06/28 20:35:49 vtt Exp $
 */
public class SimpleMulticastClient extends DatagramClient {

    public static final LogChannel CH_SMC = new LogChannel("SimpleMulticastClient");
    
    private MulticastSocket socket;
    private InetAddress group;

    protected void startup() throws Throwable {
    
        group = InetAddress.getByName("239.192.0.1");
        socket = new MulticastSocket(5001);
        
        socket.joinGroup(group);
        
        complain(LOG_INFO, CH_SMC, "Listening on " + group + ":5001");
    }

    protected void receive(DatagramPacket packet) throws IOException {
    
        socket.receive(packet);
    }
    
    protected void shutdown(Throwable cause) throws Throwable {
    
        socket.leaveGroup(group);
    }
}