[hardwaresofton]

Yup -- https://github.com/Antonito/gfile/blob/v0.1.0/internal/sessi...

There's no TURN server specified, and I'm not 100% sure whether the one that's specified there (Google's) does both (so if STUN didn't work, would it fail or attempt TURN?).

[lossolo]

Google only provides STUN server. Providing free, performant TURN server would require HUGE amount of resources.