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Copy pathHeartBeat.java
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34 lines (30 loc) · 929 Bytes
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//file: HeartBeat.java
import java.net.*;
import java.io.*;
public class HeartBeat extends java.applet.Applet {
String myHost;
int myPort;
public void init( ) {
myHost = getCodeBase().getHost( );
myPort = Integer.parseInt( getParameter("myPort") );
}
private void sendMessage( String message ) {
try {
byte [] data = message.getBytes("UTF-8");
InetAddress addr = InetAddress.getByName( myHost );
DatagramPacket pack =
new DatagramPacket( data, data.length, addr, myPort );
DatagramSocket ds = new DatagramSocket();
ds.send( pack );
ds.close();
} catch ( IOException e ) {
System.out.println( e ); // Error creating socket
}
}
public void start( ) {
sendMessage("Arrived");
}
public void stop( ) {
sendMessage("Departed");
}
}