What is port 3033 used for?

[OzzieOrca]

I've self hosted this only exposing port 3000 and everything seems to work. Is port 3033 supposed to be for websocket communication between Interval server and the client SDK? Or between Interval server and Interval's frontend? Both the client and server seem to work fine without it being exposed. Am I missing out on anything?

[OzzieOrca]

Based on https://github.com/interval/server/pull/20/files#diff-b335630551682c19a781afebcf4d07bf978fb1f8ac04c6bf87428ed5106870f5L65 which removed it from the readme, I'm assuming it's not used? Or used to be used for something?