signalserver in combination with coturn

[fre391]

First I have installed the flutter-webrtc-server (without coturn) and it was running fine in most scenarios with flutter-webrtc on mobile. I followed the instruction at: https://larrylisky.com/2020/05/22/implementing-flutter-webrtc-client-and-server/

As a next step I installed coturn (on the same machine). I also tested my Coturn instance successfully with Trickle ICE and it seems to run fine. I followed the instructions at https://meetrix.io/blog/webrtc/coturn/installation.html

But I can no more start the flutter-webrtc-server now. It says it failed to create TURN server listener:
PNC Failed to create TURN server listener: listen udp4 0.0.0.0:3478: bind: address already in use
panic: Failed to create TURN server listener: listen udp4 0.0.0.0:3478: bind: address already in use

I can confirm that I use the following configurations:
For flutter-webrtc-server in config.ini:
...
bind=0.0.0.0
port=8086
...

For Coturn in turnserver.conf:
...
listening-ip=0.0.0.0
listening-port=3478
...

It would be great if anybody could help me out and point me in the right direction. What do I miss here?

Thank you so much for your project..I enjoy it very much exploring webrtc...

[supermuesli]

your udp port 3478 is already in use since coturn uses it. i'm assuming you set your flutter-webrtc-server turn port to 3478 as well, did you not? in that case, choosing a different turn port (in config.ini) should solve your issue. note that flutter-webrtc-server starts its own turn server (pion/turn) on the port that you provide in config.ini.

[fre391]

Yeay, thanks for letting me know. It works like a charm. Thank you so much again!