public static void main(String args[]) {
int port;
String host;
if (args.length == 1) {
try {
port = Integer.parseInt(args[0]);
doEcho(port);
} catch (IOException io_ex) {
io_ex.printStackTrace();
System.exit(1);
} catch (NumberFormatException num_ex) {
num_ex.printStackTrace();
System.exit(1);
}
} else if (args.length == 2) {
try {
host = args[0];
port = Integer.parseInt(args[1]);
UDPEcho ut = new UDPEcho(host, port);
Thread thread = new Thread(ut);
thread.start();
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
String s;
System.out.print("Enter datagram:");
s = in.readLine();
while (s != null) {
ut.send(s);
try {
Thread.currentThread().sleep(100);
} catch (InterruptedException i_ex) {
}
System.out.print("Enter datagram:");
s = in.readLine();
}
System.exit(1);
} catch (IOException io_ex) {
io_ex.printStackTrace();
System.exit(1);
} catch (NumberFormatException num_ex) {
num_ex.printStackTrace();
System.exit(1);
}
} else {
usage();
}
}
