I thought I understood the WSGI specification. So I’m looking at this Django module https://github.com/django/django/blob/master/django/middleware/locale.py and I just don’t see how it’s an implementation of a wsgi middleware as pep0333 explains it.
I was expecting a signature somewhere, such as
def __call__(self, environ, start_response)
as well as a small routine that would call another application and handle its returned value.
Could someone explain where’s the server bit and where’s the application in this middleware?
Django middleware is a little different then what you are thinking. It sits inside of the django stack. Through django middleware you have access to each step of the request and response a user makes/recieves.
https://docs.djangoproject.com/en/dev/topics/http/middleware/?from=olddocs
This just takes place within django. WSGI handles processing the request and returning the response but django gives you hooks to modify it once it hits django.