Connection Issue - Did not receive a state packet from the Tello

[rushiljoshi-ml]

I'm trying to connect to the tello using:

from djitellopy import tello

me = tello.Tello()
me.connect()
print(me.battery())

I am getting the following error readout:

[INFO] tello.py - 106 - Tello instance was initialized. Host: '192.168.10.1'. Port: '8889'.
[INFO] tello.py - 421 - Send command: 'command'
Exception in thread Thread-2:
Traceback (most recent call last):
  File "/usr/local/Cellar/python@3.6/3.6.12_1/Frameworks/Python.framework/Versions/3.6/lib/python3.6/threading.py", line 916, in _bootstrap_inner
    self.run()
  File "/usr/local/Cellar/python@3.6/3.6.12_1/Frameworks/Python.framework/Versions/3.6/lib/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/local/lib/python3.6/site-packages/djitellopy/enforce_types.py", line 54, in wrapper
    return func(*args, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/djitellopy/tello.py", line 148, in udp_state_receiver
    state_socket.bind(("", Tello.STATE_UDP_PORT))
OSError: [Errno 48] Address already in use

[INFO] tello.py - 445 - Response command: 'ok'
Traceback (most recent call last):
  File "tello_camera.py", line 9, in <module>
    me.connect()
  File "/usr/local/lib/python3.6/site-packages/djitellopy/enforce_types.py", line 54, in wrapper
    return func(*args, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/djitellopy/tello.py", line 530, in connect
    raise Exception('Did not receive a state packet from the Tello')
Exception: Did not receive a state packet from the Tello

I am on a macbook pro with Big Sur, using Python 3.6.12. What could be causing this?

I have attempted pasting the following into /etc/pf.conf

pass in proto udp from any to any port 11111
pass in proto udp from any to any port 8889
pass in proto udp from any to any port 8890

and then running

sudo pfctl -d
sudo pfctl -E

with no luck.

[M4GNV5]

Hey, your error message OSError: [Errno 48] Address already in use means something is already listening on port 8890, i.e. another program is already running which uses the port Tellos use for state packets. You can list programs using netstat -ulpen to check which program uses port 8890. Are you trying to run your script twice? Or is it some other program?

[marcelovidigal]

I have the same problem, I tested the code on windows and it worked perfectly, but on macosx this problem appears (Did not receive a state packet from the Tello), in my case I totally disabled the firewall (solution presented here) and still the error persists. What can this be? Any advances specifically for macosx?

[M4GNV5]

Can you post your error message? Do you also get the Address already in use error? I described above the problem which causes this.

[marcelovidigal]

The error is the title message (Exception: Did not receive a state packet from the Tello), the same as other posts here, I believe it only happens on mac, and there was no message that the 'Address already in use'.

[marcelovidigal]

Testing with Python 3.8 worked perfectly, either using tello.connect(False) or tello.connect(), as I was using Python 3.9 I'm referring to some problem with Python versioning.

from djitellopy import Tello

tello = Tello()

tello.connect(False)
or
tello.connect()

print(tello.get_battery())

tello.takeoff()
tello.land()

The downgrade to version 3.8 solved the problem for me, although not ideal, it is now possible to control the drone of a mac osx big sur computer.

Thanks for the help.

[mgrallos]

Hi i am using an Ubuntu 20.04 VM 3.8 python and firewall disabled but the same error persists. Send help

[lafkpages]

I can reproduce this issue using Python 3.12.3 on macOS Sonoma 14.3.1. I do get an "address already in use" error, but I checked using lsof and before running the below code, nothing is listening on neither 8889 or 8890. While I run the code, it listens on 8889, and once it crashes there is again nothing listening on either of the ports.

Code:

from djitellopy import Tello
from time import sleep

tello = Tello()

tello.connect()
tello.takeoff()

sleep(5)

tello.land()

Output:

[INFO] tello.py - 129 - Tello instance was initialized. Host: '192.168.10.1'. Port: '8889'.
Exception in thread Thread-2 (udp_state_receiver):
Traceback (most recent call last):
  File "/opt/homebrew/Cellar/python@3.12/3.12.3/Frameworks/Python.framework/Versions/3.12/lib/python3.12/threading.py", line 1073, in _bootstrap_inner
    self.run()
  File "/opt/homebrew/Cellar/python@3.12/3.12.3/Frameworks/Python.framework/Versions/3.12/lib/python3.12/threading.py", line 1010, in run
    self._target(*self._args, **self._kwargs)
  File "/Users/luis/Documents/coding/dji-tello-test/lib/python3.12/site-packages/djitellopy/enforce_types.py", line 54, in wrapper
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^
  File "/Users/luis/Documents/coding/dji-tello-test/lib/python3.12/site-packages/djitellopy/tello.py", line 180, in udp_state_receiver
    state_socket.bind(("", Tello.STATE_UDP_PORT))
OSError: [Errno 48] Address already in use
[INFO] tello.py - 438 - Send command: 'command'
[INFO] tello.py - 462 - Response command: 'ok'
Traceback (most recent call last):
  File "/Users/luis/Documents/coding/dji-tello-test/main.py", line 6, in <module>
    tello.connect()
  File "/Users/luis/Documents/coding/dji-tello-test/lib/python3.12/site-packages/djitellopy/enforce_types.py", line 54, in wrapper
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^
  File "/Users/luis/Documents/coding/dji-tello-test/lib/python3.12/site-packages/djitellopy/tello.py", line 547, in connect
    raise TelloException('Did not receive a state packet from the Tello')
djitellopy.tello.TelloException: Did not receive a state packet from the Tello