Ignores SESSION_ENGINE setting

[misli]

• django-private-chat version: 0.2.2

Description

I use SESSION_ENGINE = 'django.contrib.sessions.backends.cache' setting in my projects.
django-private-chat however fails with django.contrib.sessions.models.DoesNotExist: Session matching query does not exist., which means that it uses django.contrib.sessions.models.Session directly, ignoring the configured session engine.

[delneg]

Please submit an example of proper usage of session engine

[ledzgio]

Same issue here, any update?

UPDATE:
a quick fix is to change the get_user_from_session in utils.py into the following:

`
async def get_user_from_session(session_key):

session_key = "django.contrib.sessions.cache{}".format(session_key)
session = cache.get(session_key)
if session:
    uid = session['_auth_user_id']
    user = get_user_model().objects.filter(id=uid).first()  # get object or none
    return user
else:
    return None

`