send method
Implementation
Future<void> send(String message) async {
var DESTINATION_ADDRESS = InternetAddress("255.255.255.255");
RawDatagramSocket socket =
await RawDatagramSocket.bind(InternetAddress.anyIPv4, 10181);
socket.broadcastEnabled = true;
await socket.send(message.codeUnits, DESTINATION_ADDRESS, 10182);
await Future.delayed(Duration(seconds: 1));
await socket.send(message.codeUnits, DESTINATION_ADDRESS, 10182);
await Future.delayed(Duration(seconds: 1));
await socket.send(message.codeUnits, DESTINATION_ADDRESS, 10182);
socket.close();
}