Cannot connect to Tapo P100

[buzzdx]

Hey there, today we got our first Tapo P100 smartplug. Before buying it I looked into controlling it via Python and found this library. I setup the plug via the app and everything works fine, however when trying to use your example code I always get the following error:

File "#PATH#", line 133, in handshake
encryptedKey = r.json()["result"]["key"]
KeyError: 'result'

I printed out the return value (r.json()) of the post method in your code and get this result:

{"error_code":1003}

The App shows the following information about the plug:

Hardware Version 2
Firmware 1.2.1 Build 230804 Rel. 190922

Since I'm using your example code (with my credentials and ip of course) I don't think it's a usage problem. Did the API maybe change and the code needs to be updated? I hope someone can help =)

[almottier]

Duplicate of #123

[kebos00]

For me the handshake problem with the P100 has arisen after the change of firmware from 1.1.0 to 1.2.1 to fix a security bug. This is a shame as I had just started using these functions with a P100 and was amazed that it worked so well until I did a firmware update. I'm now holding off updating my other P100s which are still OK for now. I do hope someone can find a fix.

[almottier]

@kebos00 try this fork: https://github.com/almottier/TapoP100 , it works for P100 version 1.2.1

[kebos00]

That's great! I didn't know if I had to uninstall the previous Py100 but as I wasn't sure how to I just installed your fork anyway.
Installing your link failed the first time but worked when I used pip3. Now the P100 is controllable again thanks.
Note to anyone else that using the fork will no longer support firmware before 1.2.1.

[almottier]

Hello @kebos00 , I added support for old firmware using a fallback to the old authentification mechanism.

[kebos00]

I installed your new code but if I use it on old firmware I get the following error. It could be me doing something wrong of course but it still works fine on the latest firmware.

raise Exception(f"Failed to initialize device: {e}")

Exception: Failed to initialize device: Failed to authenticate

[almottier]

@kebos00 I think you are still using the old version.
Could you try running this command to re-install the package:

pip install --force-reinstall git+https://github.com/almottier/TapoP100.git@main

[kebos00]

Thanks. I've done that.
I now find that the first time I create the P100 plug object I get an error as below but then it continues and operates the P100 correctly with subsequent P100.turnOn() and P100.turnOff() commands.
I guess that after the initial fail which it reports, it then tries the old authentication which then works.

Failed to initialize protocol AuthProtocol
Traceback (most recent call last):
File "/home/pi/.local/lib/python3.7/site-packages/PyP100/PyP100.py", line 23, in _initialize
protocol.Initialize()
File "/home/pi/.local/lib/python3.7/site-packages/PyP100/auth_protocol.py", line 109, in Initialize
raise Exception("Failed to authenticate")
Exception: Failed to authenticate

[almottier]

Yes, the error message is expected as it will first try the new authentication protocol. It could be avoided by using an optional parameter passing the protocol to use.

[kebos00]

Thank you very much. Your fix is much appreciated!

[hams-i]

Hi dude @almottier thank you for new fork, how did you fix it? can you explain?

[almottier]

Hello @hams-i ,
It is explained in the forks README. I took the code from another project supporting the new auth and adapted it to be retro-compatible with TapoP100.
I may create a new pip package as the maintainer @fishbigger looks no longer active.

[RFNO]

Hello, I still have an result error. I'm using handshake and login otherwise I get an errot ('P100' object has no attribute 'token'), but these methods are deprecated, how to replace them ?

[almottier]

Hi @RFNO
Did you try to install the fork like this?

pip install --force-reinstall git+https://github.com/almottier/TapoP100.git@main

You should not need to call login or handshake. If you still have a problem, please open an Issue in the fork with the error details.

[RFNO]

No, so I try ... The install get no error but ... Still 'P100' object has no attribute 'token'

Nevertheless, it works with library tapo (but harder to use)

[RFNO]

I tried again but the command doesn't work with windows...

ERROR: Error [WinError 2] Le fichier spécifié est introuvable while executing command git version
ERROR: Cannot find command 'git' - do you have 'git' installed and in your PATH?

It works with git installed, and now your library works too. Thank you for your work.

[baishi]

I confirm @almottier 's fix works for me. Thanks for the contribution @almottier !

[Eserim]

Many thanks for this - I've had to resort to this as the official control app wouldn't allow me to create an automation with a quick on then off in order to control a fish tank light that uses that to toggle the mode.

[mrx23dot]

So I was stupid enough to update the firmware on Tapo L510 light bulb to v1.3.1.

This branch works for me:
https://github.com/almottier/TapoP100

I use it as a sunrise simulator before the alarm clock goes off, it became essential in winter.