Asyncio errors in bleak

[sqall01]

Hi,

I do not know if this issue is related to some of the already open ones since I do not use eq3cli. However, the underlying issue could be the same.

Since the switch to bleak, I can no longer connect to my thermostats. I can simply reproduce the error by executing:

from eq3bt import Thermostat
test = Thermostat("00:1a:22:12:26:ee")
test.update()

The output is the following:

>>> from eq3bt import Thermostat

>>> test = Thermostat("00:1a:22:12:26:ee")

>>> test.update()
Task exception was never retrieved
future: <Task finished name='Task-9' coro=<BleakConnection.on_notification() done, defined at /home/sqall/syncfolder/projekte/alertR/thermostat_service/venv_bleak/lib/python3.8/site-packages/eq3bt/bleakconnection.py:77> exception=TypeError("unsupported operand type(s) for +: 'BleakGATTCharacteristicBlueZDBus' and 'int'")>
Traceback (most recent call last):
  File "/home/sqall/syncfolder/projekte/alertR/thermostat_service/venv_bleak/lib/python3.8/site-packages/eq3bt/bleakconnection.py", line 119, in make_request
    self._loop.run_until_complete(self.wait_for_response(timeout))
  File "/usr/lib/python3.8/asyncio/base_events.py", line 616, in run_until_complete
    return future.result()
  File "/home/sqall/syncfolder/projekte/alertR/thermostat_service/venv_bleak/lib/python3.8/site-packages/eq3bt/bleakconnection.py", line 101, in wait_for_response
    await asyncio.wait_for(self._notifyevent.wait(), timeout)
  File "/usr/lib/python3.8/asyncio/tasks.py", line 494, in wait_for
    return fut.result()
  File "/usr/lib/python3.8/asyncio/locks.py", line 309, in wait
    await fut
RuntimeError: Task <Task pending name='Task-7' coro=<Event.wait() running at /usr/lib/python3.8/asyncio/locks.py:309> cb=[_release_waiter(<Future pendi...8e2f51700>()]>)() at /usr/lib/python3.8/asyncio/tasks.py:429]> got Future <Future pending> attached to a different loop

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/sqall/syncfolder/projekte/alertR/thermostat_service/venv_bleak/lib/python3.8/site-packages/eq3bt/bleakconnection.py", line 80, in on_notification
    handle = handle + 1
TypeError: unsupported operand type(s) for +: 'BleakGATTCharacteristicBlueZDBus' and 'int'
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/sqall/syncfolder/projekte/alertR/thermostat_service/venv_bleak/lib/python3.8/site-packages/eq3bt/eq3btsmart.py", line 217, in update
    self._conn.make_request(PROP_WRITE_HANDLE, value)
  File "/home/sqall/syncfolder/projekte/alertR/thermostat_service/venv_bleak/lib/python3.8/site-packages/eq3bt/bleakconnection.py", line 119, in make_request
    self._loop.run_until_complete(self.wait_for_response(timeout))
  File "/usr/lib/python3.8/asyncio/base_events.py", line 616, in run_until_complete
    return future.result()
  File "/home/sqall/syncfolder/projekte/alertR/thermostat_service/venv_bleak/lib/python3.8/site-packages/eq3bt/bleakconnection.py", line 101, in wait_for_response
    await asyncio.wait_for(self._notifyevent.wait(), timeout)
  File "/usr/lib/python3.8/asyncio/tasks.py", line 494, in wait_for
    return fut.result()
  File "/usr/lib/python3.8/asyncio/locks.py", line 309, in wait
    await fut
RuntimeError: Task <Task pending name='Task-7' coro=<Event.wait() running at /usr/lib/python3.8/asyncio/locks.py:309> cb=[_release_waiter(<Future pendi...8e2f51700>()]>)() at /usr/lib/python3.8/asyncio/tasks.py:429]> got Future <Future pending> attached to a different loop

I am running a xubuntu 20.04 machine with Python 3.8.10 (default, Jun 22 2022, 20:18:18) and have the following packages installed in my python environment:

Package       Version
------------- -------
async-timeout 4.0.2  
bleak         0.18.1 
click         8.1.3  
construct     2.10.68
dbus-fast     1.17.0 
pip           20.0.2 
pkg-resources 0.0.0  
python-eq3bt  0.2    
setuptools    44.0.0 
wheel         0.34.2

Everything works fine if I downgrade to version 0.1.12 which uses bluepy.

Well, since I thought this was a problem in bleak, I got involved in this issue https://github.com/hbldh/bleak/issues/946 However, the maintainer says this is a problem in the asyncio loop of the python-eq3bt library (see here: https://github.com/hbldh/bleak/issues/946#issuecomment-1264696635 ).

Thanks!