My app is working fine in localhost with socket.io using websockets and xhr-polling and it's working with xhr-polling in heroku, but since heroku provided support for websocket I can´t make it work using websockets.
My Chrome console shows this message:
WebSocket connection to 'ws://<myherokuapp>.herokuapp.com/socket.io/1/websocket/HBWE2BFvHahlSWk5ppHP' failed: Unexpected response code: 503
I already enabled websocket labs.
Is there any working example of websocket using socket.io?
I had the same problem and just fixed it by reactivating the websockets on my app on heroku. It had just randomly switched over to XHR polling for some reason.
I used this command from heroku's site (@ https://devcenter.heroku.com/articles/heroku-labs-websockets) to reactivate it:
heroku labs:enable websockets -a myapp
I then restarted my server by pushing to heroku and having it rebuild (or using: heroku restart).
I also have a working copy of a very basic socket.io chat application (written by Smitha Milli) running at: http://calm-gorge-8474.herokuapp.com/ that you can test.
Hope this helps!
