STUN / TURN server

Thanks @ibc, I will try it. Can I also confirm that the client will only use the TURN server other (e.g. UDP) communication isn’t availble? As a failover. I’m not sure if that would be based on logic in the mediasoup client or underlying libraries.
And we can have some clients using the TURN server, and others not using it, in the same conference? Presumably, like you say, the clients/server would not know or care.