Django channels, отклоненный запрос от клиента при добавлении нового заголовка к запросу
Мне нужно добавить новый заголовок к запросу websocket, но он отклоняется и отключается еще до выполнения метода connect в классе WebSocketConsumer :
class RecordConsumer(WebsocketConsumer):
def connect(self):
user = self.scope["user"]
print(user.is_authenticated)
header_name, header_value = self.scope["headers"][-1]
print(header_name, header_value)
print(header_name.decode("utf-8") ==
"issurvey" and header_value.decode("utf-8") == "true")
if user.is_authenticated:
self.room_group_name = "test"
async_to_sync(self.channel_layer.group_add)(
self.room_group_name,
self.channel_name
)
self.accept()
elif header_name.decode() == "issurvey" and header_value.decode() == "true":
self.room_group_name = "test"
async_to_sync(self.channel_layer.group_add)(
self.room_group_name,
self.channel_name
)
self.accept()
else:
self.close()
У меня есть пользовательское промежуточное ПО для аутентификации с помощью токена, чтобы иметь возможность подключаться с мобильного устройства :
from channels.auth import AuthMiddlewareStack
from channels.db import database_sync_to_async
from django.contrib.auth.models import AnonymousUser
from rest_framework.authtoken.models import Token
from urllib.parse import parse_qs
@database_sync_to_async
def get_user(token_key):
try:
token = Token.objects.get(key=token_key)
return token.user
except Token.DoesNotExist:
return AnonymousUser()
except KeyError:
return AnonymousUser()
class TokenAuthMiddleware:
def __init__(self, inner):
self.inner = inner
def __call__(self, scope):
return TokenAuthMiddlewareInstance(scope, self)
class TokenAuthMiddlewareInstance:
"""
Yeah, this is black magic:
https://github.com/django/channels/issues/1399
"""
def __init__(self, scope, middleware):
self.middleware = middleware
self.scope = dict(scope)
self.inner = self.middleware.inner
async def __call__(self, receive, send):
decoded_qs = parse_qs(self.scope["query_string"])
if b'token' in decoded_qs:
token = decoded_qs.get(b'token').pop().decode()
self.scope['user'] = await get_user(token)
return await self.inner(self.scope, receive, send)
def TokenAuthMiddlewareStack(inner): return TokenAuthMiddleware(
AuthMiddlewareStack(inner))
Я добавил это промежуточное ПО в файл asgi :
"""
ASGI config for detector project.
It exposes the ASGI callable as a module-level variable named ``application``.
For more information on this file, see
https://docs.djangoproject.com/en/3.2/howto/deployment/asgi/
"""
import os
from django.core.asgi import get_asgi_application
from channels.routing import ProtocolTypeRouter, URLRouter
from channels.auth import AuthMiddlewareStack
from records.token_auth import TokenAuthMiddleware
import records.routing
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'detector.settings')
application = ProtocolTypeRouter({
"http": get_asgi_application(),
"websocket":
TokenAuthMiddleware(
AuthMiddlewareStack(
URLRouter(
records.routing.websocket_urlpatterns
))
)
})
