code: def send_discovery_packet(self):
          
          if self.port is None:
              return
  
          self.transport.sendto(
              QRTDiscoveryP1.pack(
                  QRTDiscoveryPacketSize, QRTPacketType.PacketDiscover.value
              )
              + QRTDiscoveryP2.pack(self.port),
              ("<broadcast>", 22226),
          )
docs: Send discovery packet for QTM to respond to