import java.io.IOException;
import java.net.DatagramPacket;
import java.net.InetAddress;
import java.net.MulticastSocket;
import java.net.SocketException;
import java.net.UnknownHostException;
public class MulticastSniffer {
public static void main(String[] args) {
InetAddress ia = null;
byte[] buffer = new byte[65509];
DatagramPacket dp = new DatagramPacket(buffer, buffer.length);
int port = 0;
try {
try {
ia = InetAddress.getByName(args[0]);
}
catch (UnknownHostException e) {
//
}
port = Integer.parseInt(args[1]);
} // end try
catch (Exception e) {
System.err.println(e);
System.err.println("Usage: java MulticastSniffer MulticastAddress port");
System.exit(1);
}
try {
MulticastSocket ms = new MulticastSocket(port);
ms.joinGroup(ia);
while (true) {
ms.receive(dp);
String s = new String(dp.getData(), 0, 0, dp.getLength());
System.out.println(s);
}
}
catch (SocketException se) {
System.err.println(se);
}
catch (IOException ie) {
System.err.println(ie);
}
}
}