Fails on WebSocket disconnect in aiohttp

[voronin-opensoft]

Hello. Python-engineio fails on Websocket disconnect in https://github.com/miguelgrinberg/python-engineio/blob/v1.5.2/engineio/async_aiohttp.py#L111
cause incorrect data type (integer 1001).
It affects 1.5 version only

[miguelgrinberg]

@voronin-opensoft can you add a complete stack trace of the error please? Thanks.

[miguelgrinberg]

I was able to reproduce this, here is the stack trace:

Task exception was never retrieved
future: <Task finished coro=<WebSocket.wait() done, defined at /python-engineio/engineio/async_aiohttp.py:107> exception=OSError()>
Traceback (most recent call last):
  File "/usr/lib/python3.5/asyncio/tasks.py", line 239, in _step
    result = coro.send(None)
  File "/python-engineio/engineio/async_aiohttp.py", line 112, in wait
    raise IOError()
OSError

[miguelgrinberg]

This turned out to be a bug in asyncio. Here is the bug report I filed.

I will add a workaround in the mean time.