#31091: ConnectionResetError: [Errno 104] Connection reset by peer with a simple
GET call.
-------------------------------------+-------------------------------------
Reporter: Baptiste | Owner: nobody
Vandenborght |
Type: Bug | Status: closed
Component: HTTP handling | Version: master
Severity: Normal | Resolution: wontfix
Keywords: | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Changes (by felixxm):
* status: new => closed
* cc: Florian Apolloner (added)
* version: 2.2 => master
* resolution: => wontfix
Old description:
> Hello,
>
> I have this pretty simple GET api method (I use djangorestframework, but
> the issue is still related to Django itself, see all my explanations):
>
> {{{
> from rest_framework import generics, status
> from rest_framework.response import Response
> from django.conf import settings
>
> class Monitoring(generics.RetrieveAPIView):
> def retrieve(self, request, *args, **kwargs):
> return Response({
> "app_build": settings.APP_BUILD_NUMBER,
> }, status=status.HTTP_200_OK
> )
> }}}
>
> I was using Django **Version 2.1.1**, everything was working perfectly
> fine.
>
> Then, I upgraded to version **Django 2.2.8**, and I suddenly get the
> following error (for all my API call, but I took the simplest as an
> example) :
>
> {{{
> [14/Dec/2019 23:18:29] "GET /monitoring HTTP/1.1" 200 38
> ----------------------------------------
> Exception happened during processing of request from ('x.y.z.x', 53609)
> Traceback (most recent call last):
> File "/opt/rh/rh-python36/root/usr/lib64/python3.6/socketserver.py",
> line 654, in process_request_thread
> self.finish_request(request, client_address)
> File "/opt/rh/rh-python36/root/usr/lib64/python3.6/socketserver.py",
> line 364, in finish_request
> self.RequestHandlerClass(request, client_address, self)
> File "/opt/rh/rh-python36/root/usr/lib64/python3.6/socketserver.py",
> line 724, in __init__
> self.handle()
> File "/opt/rh/rh-python36/root/usr/lib/python3.6/site-
> packages/django/core/servers/basehttp.py", line 153, in handle
> self.handle_one_request()
> File "/opt/rh/rh-python36/root/usr/lib/python3.6/site-
> packages/django/core/servers/basehttp.py", line 161, in
> handle_one_request
> self.raw_requestline = self.rfile.readline(65537)
> File "/opt/rh/rh-python36/root/usr/lib64/python3.6/socket.py", line
> 586, in readinto
> return self._sock.recv_into(b)
> ConnectionResetError: [Errno 104] Connection reset by peer
> ----------------------------------------
> }}}
>
> FYI, I'm using **Python 2.6.9** version
>
> By the way, these APIs are sending me the response as expected, these
> errors are just printed on Django console, so I guess it's not critical
> nor preventing Django to work as expected, but it's still annoying to get
> these errors everytime now.
>
> I just did one thing: Tried different versions of Django (using pip3.6),
> and here the result I got :
> - **Django 2.1.1:** Working as expected
> - **Django 2.1.3:** Working as expected
> - **Django 2.1.4:** Error
> - **Django 2.1.5:** Error
> - **Django 2.1.15:** Error
> - **Django 2.2.0:** Error
> - **Django 2.2.8:** Error
>
> So I guess something happened between Django 2.1.3 and 2.1.4 but can't
> figure what.
>
> Thanks for the help!
> Kindly
New description:
Hello,
I have this pretty simple GET api method (I use djangorestframework, but
the issue is still related to Django itself, see all my explanations):
{{{
from rest_framework import generics, status
from rest_framework.response import Response
from django.conf import settings
class Monitoring(generics.RetrieveAPIView):
def retrieve(self, request, *args, **kwargs):
return Response({
"app_build": settings.APP_BUILD_NUMBER,
}, status=status.HTTP_200_OK
)
}}}
I was using Django **Version 2.1.1**, everything was working perfectly
fine.
Then, I upgraded to version **Django 2.2.8**, and I suddenly get the
following error (for all my API call, but I took the simplest as an
example) :
{{{
[14/Dec/2019 23:18:29] "GET /monitoring HTTP/1.1" 200 38
----------------------------------------
Exception happened during processing of request from ('x.y.z.x', 53609)
Traceback (most recent call last):
File "/opt/rh/rh-python36/root/usr/lib64/python3.6/socketserver.py",
line 654, in process_request_thread
self.finish_request(request, client_address)
File "/opt/rh/rh-python36/root/usr/lib64/python3.6/socketserver.py",
line 364, in finish_request
self.RequestHandlerClass(request, client_address, self)
File "/opt/rh/rh-python36/root/usr/lib64/python3.6/socketserver.py",
line 724, in __init__
self.handle()
File "/opt/rh/rh-python36/root/usr/lib/python3.6/site-
packages/django/core/servers/basehttp.py", line 153, in handle
self.handle_one_request()
File "/opt/rh/rh-python36/root/usr/lib/python3.6/site-
packages/django/core/servers/basehttp.py", line 161, in handle_one_request
self.raw_requestline = self.rfile.readline(65537)
File "/opt/rh/rh-python36/root/usr/lib64/python3.6/socket.py", line 586,
in readinto
return self._sock.recv_into(b)
ConnectionResetError: [Errno 104] Connection reset by peer
----------------------------------------
}}}
FYI, I'm using **Python 2.6.9** version
By the way, these APIs are sending me the response as expected, these
errors are just printed on Django console, so I guess it's not critical
nor preventing Django to work as expected, but it's still annoying to get
these errors everytime now.
I just did one thing: Tried different versions of Django (using pip3.6),
and here the result I got :
- **Django 2.1.1:** Working as expected
- **Django 2.1.3:** Working as expected
- **Django 2.1.4:** Error
- **Django 2.1.5:** Error
- **Django 2.1.15:** Error
- **Django 2.2.0:** Error
- **Django 2.2.8:** Error
So I guess something happened between Django 2.1.3 and 2.1.4 but can't
figure what.
Thanks for the help!
Kindly
--
Comment:
Thanks for this report, however I cannot reproduce this issue with Python
3.6.9 and Django 2.2.8.
This can be a side effect of 934acf1126995f6e6ccba5947ec8f7561633c27f
(ticket #29849), see a commit message:
> The combination of those two fixes resulted in yet another problem:
> HTTP/1.1 by default allows a client to assume that keep-alive is
> supported unless the server disables it via 'Connection: close' -- see
> RFC2616 8.1.2.1 for details on persistent connection negotiation. Now if
> the client receives a response from Django without 'Connection: close'
> and immediately sends a new request (on the same tcp connection) before
> our server closes the tcp connection, it will error out at some point
> because the connection does get closed a few milli seconds later.
but I don't think that there is anything we can improve in Django.
--
Ticket URL: <https://code.djangoproject.com/ticket/31091#comment:1>
Django <https://code.djangoproject.com/>
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