AbleLib, so awesome

// Scan for nearby devices
AbleManager.shared.scan { result ->
  result.onSuccess { 
    // handle the devices set
  }.onFailure {
    // an exception has occurred
  }
}

comm.actions
  .connect()
  .discoverServices([myServiceUUID])
  .discoverCharacteristics([myCharUUID])
  .readCharacteristic { char in
    print("Char value: \(char.value)")
  }
  .run()

L2capSocket(secure = true, device, psm).run {
  try {
     connect()
     send(data)
     close()
  } catch (e: AbleSocketException) { }
}