Windows 10: KeyError: 'A07498CA-AD5B-474E-940D-16F1FBE7E8CD' in server.py

[WouterJD]

The problem KeyError: 'A07498CA-AD5B-474E-940D-16F1FBE7E8CD'

Reproduction On windows 10: ..\examples\server.py

Expected behavior I would like to get acquainted with bless and hence try to run server.py, expecting it would run.

Screenshots

Z:\Github\kevincar\bless\wd-StartUp>..\examples\server.py
DEBUG:asyncio:Using proactor: IocpProactor
DEBUG:bless.backends.winrt.server:Creating a new service with uuid: A07498CA-AD5B-474E-940D-16F1FBE7E8CD
DEBUG:bless.backends.winrt.server:Adding service to server with uuid A07498CA-AD5B-474E-940D-16F1FBE7E8CD
Traceback (most recent call last):
  File "Z:\Github\kevincar\bless\examples\server.py", line 93, in <module>
    loop.run_until_complete(run(loop))
  File "C:\Users\Wouter Dubbeldam\AppData\Local\Programs\Python\Python38\lib\asyncio\base_events.py", line 612, in run_until_complete
    return future.result()
  File "Z:\Github\kevincar\bless\examples\server.py", line 67, in run
    await server.add_new_characteristic(
  File "C:\Users\Wouter Dubbeldam\AppData\Local\Programs\Python\Python38\lib\site-packages\bless\backends\winrt\server.py", line 196, in add_new_characteristic
    service: BlessGATTServiceWinRT = self.services[service_uuid]
KeyError: 'A07498CA-AD5B-474E-940D-16F1FBE7E8CD'

Desktop (please complete the following information):

• OS: Windows 10

Additional context No additional information, using server.py out of the box.

My name is Wouter Dubbeldam from the Netherlands and I am delighted that there is a library to create BLE-servers; it might be a great addition to FortiusAnt. Pointing me in the right direction would be really appreciated!

[WouterJD]

Hmmmm...

Changing

    my_service_uuid = "A07498CA-AD5B-474E-940D-16F1FBE7E8CD"
    my_char_uuid = "51FF12BB-3ED8-46E5-B4F9-D64E2FEC021B"

into

    my_service_uuid = "a07498ca-ad5b-474e-940d-16f1fbe7e8cd"
    my_char_uuid = "51ff12bb-3ed8-46e5-b4f9-d64e2fec021b"

solves the problem....

(Not that examples\server.py now works, but that may be another issue)

[WouterJD]

Perhaps def add_new_characteristic should add service_uuid = str(UUID(service_uuid))

like def update_value does

[kevincar]

Thanks @WouterJD!

Feel free to make a pull request for this if this solves the issue, otherwise I’ll see if I can get to this soon.

[WouterJD]

Will do. Thanks for reaction, struggling on windows 10...

[kevincar]

closing this since it has been merged to the develop branch