sendPong method
Implementation
Future sendPong() async {
var pONG = Uint8List(7);
var pONGBODY = Uint8List(4);
pONGBODY[0] = 80;
pONGBODY[1] = 79;
pONGBODY[2] = 78;
pONGBODY[3] = 71;
pONG[0] = PONG_TYPE;
pONG[1] = (pONGBODY.length & 0xff);
pONG[2] = ((pONGBODY.length >> 8) & 0xff);
pONG.setRange(3, 6, pONGBODY);
socket!.add(pONG);
await socket!.flush();
if (timer.isActive()) {
timer.cancel();
}
}