Datagram packet = udpCon.newDatagram(buf, buf.length);
udpCon.send(packet);
// Get response
packet = udpCon.newDatagram(buf, buf.length);
udpCon.receive(packet);
// Display response
final String message =
new String(packet.getData(), 0, packet.getLength());
displayMessage(_connectionName + " " + message);