Re: List of jackd startup and named instance questions

Ethan Funk <[email protected]> Sat, 09 Mar 2019 11:00:00 -0700

Newsgroups	gmane.comp.audio.jackit
Organization	Red Mountain Radio LLC
Message-ID	<2e88fb607369119d998551d3951983905a6a27a8.camel@redmountainradio.com>

Thanks Thomas.

Needing to set the JackServerName option bit flag for
jack_client_open() when passing a server name into the function is what
I was missing when trying to connect to a named jackd server. And along
that same line, the JackNoStartServer flag also solves my server auto-
start problem from my client.  It's good to know that the environmental
variables referenced in the jackd man-page are also used by the client
API.  That wasn't apparent to me.

Thanks... you save me a lot of time looking through the jack source
code!

Ethan...

On Sat, 2019-03-09 at 15:12 +0100, Thomas Brand wrote:
> On Fri, March 8, 2019 19:12, Ethan Funk wrote:
> Hello all.
> 
> 
> Some notes taken from jackd manpage that cover a few of the topics in your
> mail here:
> 
> Every JACK client reads environment variables under the hood that can
> control some of the aspects you refer to.
> 
> $JACK_DEFAULT_SERVER specifies the default server name.
> As an example:
> JACKD_DEFAULT_SERVER=nondefault jack_lsp
> 
> jack_lsp doesn't need special code for handling for that.
> 
> $JACK_NO_START_SERVER specifies to not start a server when none is running
> (with given name).
> As Nettingsmeier pointed out, you really want to start the server
> separately with defined parameters and not rely on a client to do it.
> 
> Clients can control server name and autostartup behavior in code
> explicitly by passing jack_options_t to the jack_client_open() function.
> 
> $JACK_PROMISCUOUS_SERVER allows for relaxed permissions, "allowing clients
> from different users to talk with the same server"
> 
> Finally you can always wrap the server or client startups in a script or
> have a small daemon that will do it iff the other approaches aren't good
> enough.
> 
> Greetings
> Thomas
> 
> 
>

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