ContentsIndex
Example
LUDP::beginPacket Method (char *, uint16_t)
    udp.begin(1234);   // start UDP on port 1234
    udp.beginPacket("www.somewebsite.com", 56);  // start a packet sending to www.somewebsite.com on port 56.
    udp.write(0);  // write a byte of value 0 to the packet
    udp.endPacket();  // actually send the packet.