Since I have spent about 15 minutes today trying to figure out why my WebSockets are not updating in development, I have decided to put quick fix here, hopefully this will be useful.

Issue:

Let me help you!

Hey, I am Anatoly, founder of this blog. I would love to help you! I have 6+ years experience in Web Development and IT Leadership. Lets work together on your project! Leave me your email and I will schedule a FREE Consultation!

LETS TALK!

When I started ActionCable I got this error:

Request origin not allowed: http://0.0.0.0:3000
Failed to upgrade to WebSocket (REQUEST_METHOD: GET, HTTP_CONNECTION: Upgrade, HTTP_UPGRADE: websocket)
Finished "/cable/" [WebSocket] for 127.0.0.1 at 2016-08-01 14:23:38 -0700

Solution:

1.  Go to

   development.rb

2.  Add following line:

   config.action_cable.allowed_request_origins = ['http://0.0.0.0:3000']

3. Restart Web Server
4. Enjoy!

Click Subscribe to stay tuned for some cool Rails 5 ActionCable examples!

Cheers,

Anatoly

Thanks for installing the Bottom of every post plugin by Corey Salzano. Contact me if you need custom WordPress plugins or website design.