this is what all proper network clients do... you can see examples of it in the bitcoin core and btcd p2p code as well front end devs are not often so well versed in the problems of socket networking, being used to HTTP APIs... websocket libraries don't give you any tools for this either

yeah nostrudel and coracle have both had this since i first used the beginning of this year... the client should keep a queue and a checklist of which relays it has got to and some sort of scheme for backing off one of the differences with web clients though is that queue is nixed when you refresh the page, and sometimes the page scripts are broken and make this refresh happen on clicks unintentionally