is the oven reachable?

a built-in trickle-ice: asks your coturn for host / srflx / relay candidates, then pushes a datachannel through the relay. nothing third-party is contacted.

Network Utility
press "run test".
candidates.csv
typeprotoaddressport
  • host candidates (lan)
  • srflx: stun on your coturn
  • relay: turn allocation
  • datachannel through turn

tip: open /r/<room>?relay=1 to force a real call through turn.