I built a robot using Blynk on IOS and a local Blynk server running on a Rasp Pi last summer. This uses Node-Red with Websockets running on a network that is not connected to the internet. Worked great!
Tried to use recently and could not connect from the I-Phone. Upgraded the Blynk Server to version 0.31.0-java8. IOS will now connect to the server but Node-Red goes nuts with errors. Several posts suggest that the websockets port has changed from 8081, but depending on the post I find different answers.
What is the correct websocket port?