Sending messages to channels via celery

[caronc]

I'm experiencing a very similar problem to this one in my Django Development/Testing environment with the following configuration:

# settings.py
CHANNEL_LAYERS = {
    "default": {
        # This example app uses the Redis channel layer implementation
        # asgi_inmemory
        "BACKEND": "asgiref.inmemory.ChannelLayer",
        "ROUTING": "mytest.routing.channel_routing",
    },
}

My Problem: A scheduled (Celery) task can not send a web socket request through channels. However, it works great in views and other locations. The symptoms are present both with the immediately=True setting and without it. There is no error or anything; the web socket request is just simply not passed along. However having a signal generated from within a model/view works awesome (so i know my setup is good - or so i think).

# from within a celery task (this will just silently fail and not fire to the client):
Group("test").send({
    "text": json.dumps({
        'type': 'test',
    })
}, immediately=True)

# nothing gets sent to the user at this point

I'm launching a celery worker (before starting Django) like so:

   DJANGO_SETTINGS_MODULE=myapp.settings celery --app=myapp worker --beat \
      -l debug \
      --concurrency=1 \
      -Q celery,testqueueA,testqueueB \
      --pidfile for_killing_later.pid &

Was just curious if there was something i was missing here? My package versions are:

• Django==1.10.7
• channels==1.1.3
• asgi-redis==1.4.0
• asgi-ipc==1.4.0
• daphne==1.2.0
• asgiref==1.1.2
• celery==3.2.1

Any help and/or advice would be most welcome!

[andrewgodwin]

Are you running inside of Docker?

[andrewgodwin]

Oh, wait, I've just seen you are using the inmemory channel layer - this does not work between processes (and you've also got the wrong repo anyway). Switch to the IPC or Redis layers and you'll be able to talk between processes.

[caronc]

i feel stupid now 😊 ; asgi_ipc is working as expected. Thank you for such a fast reply and pointing out my mistake!