I am having problems with a Meteor app. Some smartphones are not receiving data from subscriptions when they are connected via 3G/4G but they work properly when connecting via Wi-Fi. I think it is because Vodafone (a mobile network operator) is blocking websocket connections to port 80.
Is it possible to change the DDP port? Does anyone have a workaround to make it work?
I have tried changing the environment variable "DDP_DEFAULT_CONNECTION_URL": "ddp+sockjs://xxxxxx.com:443/sockjs" but it breaks the app for all devices and throws the following error:
GET http://0.0.1.187/sockjs/info?cb=23ctb533n5 net::ERR_ADDRESS_UNREACHABLE
Thank you very much for your help and time!
This should work out-of-the-box in Meteor, since the engine supposedly falls back to a backup technology (AJAX+JSON) if WebSockets fail. However, I had the same issue and still couldn't figure out why this wasn't automagic.
You can however force this behavior with
From here: http://www.meteorpedia.com/read/Websockets