String hostname;
int port;
int len;
if (args.length > 0) {
hostname = args[0];
}
else {
hostname = "localhost";
port = defaultPort;
len = bufferLength;
}
try {
port = Integer.parseInt(args[1]);
}
catch (Exception e) {
port = defaultPort;
}
try {
len = Integer.parseInt(args[2]);
}
catch (Exception e) {
len = bufferLength;
}
try {
DatagramSocket ds = new DatagramSocket(0);
InetAddress ia = InetAddress.getByName(hostname);
DatagramPacket outgoing = new DatagramPacket(new byte[512], 1, ia, port);
DatagramPacket incoming = new DatagramPacket(new byte[len], len);
ds.send(outgoing);
ds.receive(incoming);
System.out.println(new String(incoming.getData(), 0, 0, incoming.getLength()));
} // end try
catch (UnknownHostException e) {
System.err.println(e);
} // end catch
catch (SocketException e) {
System.err.println(e);
} // end catch
catch (IOException e) {
System.err.println(e);
} // end catch
