Reject unauthenticated users + exponential wait time

Signed-off-by: Emmy D'Anello <emmy.danello@animath.fr>

draw/consumers.py

@@ -47,6 +47,10 @@ class DrawConsumer(AsyncJsonWebsocketConsumer):
 
         # Fetch the registration of the current user
         user = self.scope['user']
+        if user.is_anonymous:
+            # User is not authenticated
+            await self.close()
+            return
         reg = await Registration.objects.aget(user_id=user.id)
         self.registration = reg