Oddbean new post about login | logout https://datatracker.ietf.org/doc/rfc9220/ this might be interesting too... it's basically reworking websockets to work over QUIC transports (which is UDP @ChipTuner @Michael J )
yeah, it's basically the same as TCP except, mostly, the rigmerole of handshake and disconnect, and that you can send either binary or text frames, everything else is optional... maintaining a ping to detect loss of connection is application level, but conventional