[Galene] Re: Heads-up: built-in TURN server

[Juliusz Chroboczek <jch@irif.fr>]

>>> Is there any benefit to switching to the built-in one if I already have
>>> a working setup with an external TURN server?

>> None at all, and you'd lose IPv6 support.

> In that case, would it not be better to only start up the built-in TURN
> server if no explicit turn server config is present, instead of
> requiring a command-line option to turn it off?

If the built-in server is enabled, it will be injected at the end of the
ICE configuration, your external server will be used first, with fallback
to the built-in server if connectivity cannot be established through the
external server.

If the built-in server is enabled and uses the same port as your external
server, then the bind() call will fail (EADDRINUSE), you'll get a friendly
log message, and the built-in server will be disabled.

The only troublesome case is if the ports are the same, and Galène is
started before the external TURN server, in which case the external TURN
server won't be able to bind its ports.

I find the current behaviour simpler to explain than what you suggest, and
I'm trying to optimise for simplicity.  I'm open to different opinions,
though, especially if you find any catastrophic failure modes with the
current defaults.

-- Juliusz