Thanks for the response, and sorry it’s not clear (it’s one of those projects that makes sense in your head but when you try to explain it…)
I think I have websockets working, but basically it needs to be able to send basic strings so that each side can get a specific view state ready. It’s an ipad open on the p5 client page, with a UI that’s just buttons. When the button is pressed (ipad), it tells processing (a monitor) to go get a new view ready, with a callback that it’s ready – then the ipad updates its state.
So, it’s seemingly easy and simple… but it hasn’t been. Been looking into spacebrew but seems perhaps overkill…