Does Ignition 8 support Websocket using STOMP (i.e. stomp.js and sock.js)?
No, not natively. If you wanted to build in support, it would be fairly easy to write a module that would bundle the required JS libraries, although how you would expose that to users/designers is up to you.
You could use Java/Jython code to create a websocket connection and manually address the protocol fairly easily, also.
Thanks I have an API from HMS/ewon that uses websockets and STOMP. Any help would be much appreciated on the required steps