[
    {
        "urls": [
            "turn:__DOMAIN__:__TURNSERVER_PORT__",
            "turn:__DOMAIN__:__TURNSERVER_PORT__?transport=tcp",
            "turn:__DOMAIN__:__TURNSERVER_PORT__?transport=udp"
        ],
        "username": "__APP__",
        "credential": "__TURNSERVER_PWD__"
    }
]