InetAddress ia = null;
byte[] buffer = new byte[65535];
DatagramPacket dp = new DatagramPacket(buffer, buffer.length);
int port = 0;
// read the address from the command line
try {
try {
ia = InetAddress.getByName(args[0]);
} catch (UnknownHostException e) {
System.err.println(e);
}
port = Integer.parseInt(args[1]);
} catch (Exception e) {
System.err.println(e);
System.err.println("Usage: java MulticastSniffer mcast-addr port");
System.exit(1);
}
System.out.println("About to join " + ia);
try {
MulticastSocket ms = new MulticastSocket(port);
ms.joinGroup(ia);
while (true) {
System.out.println("About to receive...");
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);
}
