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	Mon, 03 May 2021 22:42:42 -0700 (PDT)
Subject:	Re: python > 3.5: Issue with unix domain sockets
To:	cygwin AT cygwin DOT com
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	<2cde4128-6a3d-7431-6608-a2184d23964a AT cornell DOT edu>
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Date:	Tue, 4 May 2021 07:42:40 +0200
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From:	Marco Atzeri via Cygwin <cygwin AT cygwin DOT com>
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On 04.05.2021 06:41, Mark Geisert wrote:
> Ken Brown via Cygwin wrote:
>> On 5/3/2021 8:57 AM, Maximilian.Blenk--- via Cygwin wrote:
>>> Incorrect Behavior:
>>> Server:
>>> $ python3.7 server.py
>>> starting up on ./uds_socket
>>> waiting for a connection
>>> Traceback (most recent call last):
>>>    File "server.py", line 27, in <module>
>>>      connection, client_address = sock.accept()
>>>    File "/usr/lib/python3.7/socket.py", line 214, in accept
>>>      sock = socket(self.family, self.type, self.proto, fileno=fd)
>>>    File "/usr/lib/python3.7/socket.py", line 151, in __init__
>>>      _socket.socket.__init__(self, family, type, proto, fileno)
>>> SystemError: <slot wrapper '__init__' of '_socket.socket' objects> 
>>> returned NULL without setting an error
>>>
>>> Client:
>>> $ python3.7 client.py
>>> connecting to ./uds_socket
>>> sending b'This is the message.  It will be repeated.'
>>> closing socket
>>> Traceback (most recent call last):
>>>    File "client.py", line 27, in <module>
>>>      data = sock.recv(16)
>>> ConnectionResetError: [Errno 104] Connection reset by peer
>>
>> I wonder if this has the same cause as the problem reported here:
>>
>>    https://cygwin.com/pipermail/cygwin/2021-February/247884.html
>>
>> Mark, can you check that?
> 
> Hmm, the correlation between failing Python versions and patch 
> placements is troubling.  I've reproduced the OP's findings and will dig 
> further.
> 
> ..mark
> 

3.5 has not your patch for asyncio, as I am not updating it.

all the others have it. It will be nice to solve this problem and avoid 
the freeze that your patch solved.





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