Unknown call done to "GET /graphql HTTP/1.1" with brand new project django 2.2.5

[Roberto Fernandez Diaz]

I created a new project from 0 using python 3.7.3 and the Django version is 2.2.5, macOS High Sierra 10.13.2

I just added a view for testing ( I discover this problem working in another project and in order to isolate it I started a brand new project call "untitled1")

urls.py

from untitled1.views import test

urlpatterns = [
    path('admin/', admin.site.urls),
    path('home/', test, name='home'),
]

views.py

from django.http import HttpResponse

def test(request):
    return HttpResponse("hello")

Every 60 s since I go to "localhost:8000/home" I see this error in the terminal:

[24/Sep/2019 15:02:32] "GET /graphql HTTP/1.1" 404 2081
Not Found: /graphql

After some time and without any additional navigation the error keeps appearing periodically and at some point in throws Exceptions :

[24/Sep/2019 15:02:32] "GET /graphql HTTP/1.1" 404 2081
Not Found: /graphql
[24/Sep/2019 15:03:04] "GET /graphql HTTP/1.1" 404 2081
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 55219)
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/socketserver.py", line 650, in process_request_thread
    self.finish_request(request, client_address)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/socketserver.py", line 360, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/socketserver.py", line 720, in __init__
    self.handle()
  File "/Users/robertofernandez/KMH/flowlemon_backend/untitled1/lib/python3.7/site-packages/django/core/servers/basehttp.py", line 171, in handle
    self.handle_one_request()
  File "/Users/robertofernandez/KMH/flowlemon_backend/untitled1/lib/python3.7/site-packages/django/core/servers/basehttp.py", line 179, in handle_one_request
    self.raw_requestline = self.rfile.readline(65537)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/socket.py", line 589, in readinto
    return self._sock.recv_into(b)
ConnectionResetError: [Errno 54] Connection reset by peer
----------------------------------------
Not Found: /graphql
[24/Sep/2019 15:03:45] "GET /graphql HTTP/1.1" 404 2081
Not Found: /graphql
[24/Sep/2019 15:04:26] "GET /graphql HTTP/1.1" 404 2081
Not Found: /graphql
[24/Sep/2019 15:05:08] "GET /graphql HTTP/1.1" 404 2081
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 55233)
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/socketserver.py", line 650, in process_request_thread
    self.finish_request(request, client_address)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/socketserver.py", line 360, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/socketserver.py", line 720, in __init__
    self.handle()
  File "/Users/robertofernandez/KMH/flowlemon_backend/untitled1/lib/python3.7/site-packages/django/core/servers/basehttp.py", line 171, in handle
    self.handle_one_request()
  File "/Users/robertofernandez/KMH/flowlemon_backend/untitled1/lib/python3.7/site-packages/django/core/servers/basehttp.py", line 179, in handle_one_request
    self.raw_requestline = self.rfile.readline(65537)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/socket.py", line 589, in readinto
    return self._sock.recv_into(b)
ConnectionResetError: [Errno 54] Connection reset by peer
----------------------------------------

[Claude Paroz]

That cannot be a Django problem, as Django never calls any graphql request. I suppose this is some leftover service worker on localhost (just a guess).

Please use support channels before opening tickets here:
https://code.djangoproject.com/wiki/TicketClosingReasons/UseSupportChannels

[Simon Charette]

Not sure if graphene is behind this /graphql endpoint but I encountered a really similar issue a while ago that was caused by the fact ​the promise library it uses is not thread safe and Django's development server uses threads by default. You can determine if that's the actual issue by ​temporarily disabling multi-threading in the development server.

As Claude said please seek advice from our support channels to confirm this is an actual issue with Django itself before submitting a bug report