## TURN service validation

Install package coturn (and stop and disable the service if unneeded).

Simple test anonymous insecure STUN service:

turnutils_stunclient -f turn1.debian.net

(seems that if it hangs, it is the server offering a bogus secondary IP)

Test anonymous insecure STUN service (udp and tcp:

turnutils_uclient turn1.debian.net -y
turnutils_uclient turn1.debian.net -t -y

(check for packet loss)



Alternatives STUN/TURN validation:
<https://stackoverflow.com/questions/28772212/stun-turn-server-connectivity-test>

STUN/TURN validation service:
<https://webrtc.github.io/samples/src/content/peerconnection/trickle-ice/>

<https://ip8.com/webrtc-test>
<https://testrtc.com/>
<https://networktest.twilio.com/>

Public STUN/TURN services:
https://github.com/DamonOehlman/freeice#current-list-of-servers

Nice explanation of turnutils_stunclient:
<https://gist.github.com/cameron-elliott/be1e581cb7b28f748e04bcabc249e6b6>

## TURN service REST interface

<https://stackoverflow.com/questions/35766382/coturn-how-to-use-turn-rest-api>