[issue25292] ssl socket gets into broken state when client exits during handshake

[Carl Bordum Hansen]

Carl Bordum Hansen  added the comment:

I have submitted a proposed solution

Just found this similar issue https://bugs.python.org/issue35840

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[issue25292] ssl socket gets into broken state when client exits during handshake

[Carl Bordum Hansen]

Change by Carl Bordum Hansen :


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keywords: +patch
nosy: +carlbordum
nosy_count: 5.0 -> 6.0
pull_requests: +21544
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/22541

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[issue25292] ssl socket gets into broken state when client exits during handshake

[Christian Heimes]

Christian Heimes added the comment:

This looks like a problem in asyncio. When the client closes the writer, the 
TLS and TCP connections are shut down. The server's writer still accept data 
although it is not written to the underlying ssl object:

(Pdb) writer.transport._ssl_protocol._extra['ssl_object'].pending()
0
(Pdb) writer.transport._ssl_protocol._in_shutdown
True
(Pdb) len(writer.transport._ssl_protocol._write_backlog)
2

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assignee: christian.heimes -> yselivanov
components:  -SSL
versions:  -Python 3.5

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[issue25292] ssl socket gets into broken state when client exits during handshake

[Yury Selivanov]

Yury Selivanov added the comment:

Christian, would you be able to look into this before b2?

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[issue25292] ssl socket gets into broken state when client exits during handshake

[Christian Heimes]

Changes by Christian Heimes :


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assignee:  -> christian.heimes
components: +SSL
nosy: +christian.heimes
type:  -> behavior
versions: +Python 3.6, Python 3.7

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[issue25292] ssl socket gets into broken state when client exits during handshake

[Oleg]

New submission from Oleg:

when i run the server in one terminal and the client in another

the server output wold be:

Serving on ('127.0.0.1', 8443)
my transport None
my backlog len 2
my backlog size 4200

that output proves that it is trying to write into socket, 
while there is no transport!

see attached example server+client mini apps.

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components: asyncio
files: example_files.tar.gz
messages: 252052
nosy: gvanrossum, haypo, ovex, yselivanov
priority: normal
severity: normal
status: open
title: ssl socket gets into broken state when client exits during handshake
versions: Python 3.5
Added file: http://bugs.python.org/file40652/example_files.tar.gz

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