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Case study: having 2 rooms, every with max 5 users, they only need 10 ports to be forwarded so the range can be 59000-59009.

All clients visit https://neko-rooms/room-name/. Once they logged in, they get one of the ports allocated where the RTC data flows. It happens inside SDP negotiation and is completly transparent to the clients. Therefore those ports needs to remain open, but they will never be actually visited directly in the browser.

NEKO_ROOMS_NAT1TO1 must be the IP where the mentioned UDP ports are forwarded. If this setting is not present, it will get automatically servers public IP at start of every room that will be sent to clients.

Connection timeout

Neko room loads but you don't see the screen and it gives you connection timeout or disconnected error? Validate that your UDP ports are reachable.