TURN docker service

[giarve]

I have been lately playing with custom TURN servers for when direct connection is not possible to be established in discuss for calls or videocalls.

A service like this can be used with env variables to make up for a relay server:

services:
  coturn:
    image: docker.io/coturn/coturn
    environment:
      - DETECT_EXTERNAL_IP=yes
      - DETECT_RELAY_IP=yes
    command: "--fingerprint --lt-cred-mech --user odooice:1234strongpass --realm odooprojectname"
    network_mode: "host"

Mind that the host will probably use more resources, but it allows connections that would not be possible in the past.

No need to use Twilio:
https://www.odoo.com/documentation/16.0/applications/productivity/discuss/ice_servers.html#define-a-list-of-custom-ice-servers

You can also test it with https://webrtc.github.io/samples/src/content/peerconnection/trickle-ice/

[pedrobaeza]

In which cases you can't set a direct connection?

[giarve]

In which cases you can't set a direct connection?

Well, you will know when it does not work :)

Usually it is on internal with limited resources, such as IP addresses, I think clients behind CG-NAT?.

When there is a firewall that prevents opening direct connections between two clients (even blocking hole punching using a connection middleman or other techniques) a relay server is used to continuously proxy the video and audio traffic from both peers (P2P connection with a relay in the middle, not so peer-to-peer...). This service is what enables this server to work.

To be honest, I am not sure if it is needed most of the time. I had a case where the connection rate was under 60% and it fixed it.

Unsure if it will be needed in the future or newest versions as some alternatives are being developed https://github.com/odoo/sfu (it seems they will try to replace meet or zoom) but I do not know if they will replace current P2P completely. You can just leave this issue open if you want.