[issue41345] Remote end closed connection without response
New submission from Michal Arbet :
Hi,
I'm not sure if this is really python bug, but I hope that you can check the
issue.
Issue is that from time to time i'm getting exception from python when sending
request to server which has http keepalive option turned on.
Requests send a request but in few miliseconds apache2 server is closing
persistent connection by sending FIN packet which generate traceback.
I can reproduce it by following simple script.
#!/usr/bin/python3
import requests
from time import sleep
import logging
logging.basicConfig(level=logging.DEBUG)
s = requests.Session()
s.verify = False # self-signed cert
counter = 0
txt = "test"
while True:
counter = counter + 1
s.post('http://localhost', data={counter:txt})
sleep(5)
Everything is working fine, but from time to time I get following traceback.
When FIN is received right after request was sent.
michalarbet@pixla:~/work$ ./request_test.py
DEBUG:urllib3.connectionpool:Starting new HTTP connection (1): localhost:80
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: localhost
DEBUG:urllib3.connectionpool:http://localhost:80 "POST / HTTP/1.1" 200 0
DEBUG:urllib3.connectionpool:Resetting dropped connection: loc
[issue41345] Remote end closed connection without response
Michal Arbet added the comment: I'm using Ubuntu 20.04 with dist apache2 and default settings : michalarbet@pixla:~/work$ dpkg -l | grep apache ii apache22.4.41-4ubuntu3 amd64Apache HTTP Server ii apache2-bin2.4.41-4ubuntu3 amd64Apache HTTP Server (modules and other binary files) ii apache2-data 2.4.41-4ubuntu3 all Apache HTTP Server (common files) ii apache2-utils 2.4.41-4ubuntu3 amd64Apache HTTP Server (utility programs for web servers) ii libapache2-mod-php 2:7.4+75 all server-side, HTML-embedded scripting language (Apache 2 module) (default) ii libapache2-mod-php7.4 7.4.3-4ubuntu2.2 amd64server-side, HTML-embedded scripting language (Apache 2 module) michalarbet@pixla:~/work$ uname -a Linux pixla 5.4.0-40-generic #44-Ubuntu SMP Tue Jun 23 00:01:04 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux When reproducing issue, be patient , you have to wait several iterations before it will fail. Some bug reports and discussion related to : https://bugs.python.org/issue41345 https://github.com/psf/requests/issues/4664 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=899406 po 20. 7. 2020 v 14:54 odesílatel Ilia Androshchuk napsal: > > Ilia Androshchuk added the comment: > > Hi Michal, > Which version of operating system and apache are you running? > I'll try to reproduce > > -- > nosy: +an7e > > ___ > Python tracker > <https://bugs.python.org/issue41345> > ___ > -- ___ Python tracker <https://bugs.python.org/issue41345> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue41345] Remote end closed connection without response
Michal Arbet added the comment: Hello, Thank you very much for help, I created pull request for urllib3 -> https://github.com/urllib3/urllib3/pull/1911 Can u just confirm that this could be fixed in urllib3 as it is in pull request ? Have I fixed it by good way ? Thanks. Michal Arbet ( kevko ) pá 24. 7. 2020 v 20:29 odesílatel Guido van Rossum napsal: > > Guido van Rossum added the comment: > > This surely is some application corner case. Closing. > > -- > nosy: +gvanrossum > resolution: -> not a bug > stage: -> resolved > status: open -> closed > > ___ > Python tracker > <https://bugs.python.org/issue41345> > ___ > -- ___ Python tracker <https://bugs.python.org/issue41345> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
