unable to perform operation on <WriteUnixTransport closed=True reading=False 0x7f16825f8ba0

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#506 opened on Sep 28, 2022 3 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 4/5
Estimated time: 3-5 days
Newbie friendliness: 25/100

Issue type: Bug
Clarity: Needs clarification
Activity status: Stale
Tech stack: python
Domain: networking

Research direction

Start with the traceback in uvloop/handles/stream.pyx and uvloop/handles/handle.pyx, then compare the reported behavior with Python's asyncio streams. Reproduce the closed WriteUnixTransport failure using the provided uvloop, Python, and Ubuntu versions; done means the differing behavior is isolated and covered by a regression test.

Written by the indexing model from the issue text.

Description

uvloop version: 0.17.0
Python version: 3.10.7
Platform: ubuntu 20.04
Can you reproduce the bug with PYTHONASYNCIODEBUG in env?: yes
Does uvloop behave differently from vanilla asyncio? How?: yes

Traceback (most recent call last):
  File "/usr/local/lib/python3.10/dist-packages/pytgcalls/methods/groups/join_group_call.py", line 275, in internal_sender
    await self._binding.send(request)
  File "/usr/local/lib/python3.10/dist-packages/pytgcalls/binding.py", line 212, in send
    await self._send({
  File "/usr/local/lib/python3.10/dist-packages/pytgcalls/binding.py", line 221, in _send
    self._js_process.stdin.write(
  File "/usr/lib/python3.10/asyncio/streams.py", line 326, in write
    self._transport.write(data)
  File "uvloop/handles/stream.pyx", line 674, in uvloop.loop.UVStream.write
  File "uvloop/handles/handle.pyx", line 159, in uvloop.loop.UVHandle._ensure_alive
RuntimeError: unable to perform operation on <WriteUnixTransport closed=True reading=False 0x7f16825f8ba0>; the handler is closed

Dominant language: Cython
Stars: 11.9k
Forks: 615
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