This version has real rooms, real chat, and real peer-to-peer video, but only when started with npm start. Do not open this HTML file directly or with Live Server. On different Wi-Fi networks, you may need a TURN server, because routers were designed by gremlins.
Invite Link
Share the LAN link with someone on the same Wi-Fi. Localhost only works on your own computer, because browsers are dramatic little border guards.