conduit/docs/turn.md

Setting up TURN/STURN

In order to make or receive calls, a TURN server is required. conduwuit suggests using Coturn for this purpose, which is also available as a Docker image.

Configuration

Create a configuration file called coturn.conf containing:

use-auth-secret
static-auth-secret=<a secret key>
realm=<your server domain>

A common way to generate a suitable alphanumeric secret key is by using pwgen -s 64 1.

These same values need to be set in conduwuit. See the example config in the TURN section for configuring these and restart conduwuit after.

Run

Run the Coturn image using

docker run -d --network=host -v $(pwd)/coturn.conf:/etc/coturn/turnserver.conf coturn/coturn

or docker-compose. For the latter, paste the following section into a file called docker-compose.yml and run docker compose up -d in the same directory.

version: 3
services:
    turn:
      container_name: coturn-server
      image: docker.io/coturn/coturn
      restart: unless-stopped
      network_mode: "host"
      volumes:
        - ./coturn.conf:/etc/coturn/turnserver.conf

To understand why the host networking mode is used and explore alternative configuration options, please visit Coturn's Docker documentation.

For security recommendations see Synapse's Coturn documentation.