int port = 37;
if (args.length > 0) {
try {
port = Integer.parseInt(args[1]);
if (port <= 0 || port > 65535) port = DEFAULT_PORT;;
}
catch (Exception ex){
}
}
ByteBuffer in = ByteBuffer.allocate(8192);
ByteBuffer out = ByteBuffer.allocate(8);
out.order(ByteOrder.BIG_ENDIAN);
SocketAddress address = new InetSocketAddress(port);
DatagramChannel channel = DatagramChannel.open();
DatagramSocket socket = channel.socket();
socket.bind(address);
System.err.println("bound to " + address);
while (true) {
try {
in.clear();
SocketAddress client = channel.receive(in);
System.err.println(client);
long secondsSince1900 = getTime();
out.clear();
out.putLong(secondsSince1900);
out.flip();
// skip over the first four bytes to make this an unsigned int
out.position(4);
channel.send(out, client);
}
catch (Exception ex) {
System.err.println(ex);
}
}
