[WinError 121] The semaphore timeout period has expired

[Aloki]

Such errors often appear in the output. However, this doesn't seem to affect the quality of the connection.
Windows 10 Build 17692, Python 3.7.0

Fatal read error on pipe transport
protocol: <asyncio.streams.StreamReaderProtocol object at 0x000002A9FF98A940>
transport: <_ProactorSocketTransport fd=748>
Traceback (most recent call last):
  File "C:\...\Python37\lib\asyncio\proactor_events.py", line 255, in _loop_reading
    data = fut.result()
  File "C:\...\Python37\lib\asyncio\windows_events.py", line 732, in _poll
    value = callback(transferred, key, ov)
  File "C:\...\Python37\lib\asyncio\windows_events.py", line 428, in finish_recv
    return ov.getresult()
OSError: [WinError 121] The semaphore timeout period has expired

[GoldenOne1]

Python 3.7 never worked for me
I tested on Windows 2008 2012 2016

I can connect just with Python 3.6.5

And Python 3.6.5 has loop problem (bug)
Maybe that bug solved in 3.7

[GoldenOne1]

@Aloki

Thats loop bug in Python,I reported this to alexsbers already

With this error you cant load photos is telegram

[alexbers]

Hi! If everything works, I think those timeouts can be ignored. They are likely because some clients silently lose the connections. I added the code to ignore those errors: 6f8bfdb

[Aloki]

Yes, everything works. Nice, thanks!