Hello.
I have some servers running PHP applications on Nginx via PHP-FPM. Each server uses a named socket in the filesystem. Nginx can often pass its configuration test but the server does not function as expected if the named socket file is not there (i.e. PHP-FPM is not running as expected).

Is it possible to integrate a check for the existence of that socket file in the `nginx -t` process? I am able to create a shell script to check for the socket and then run `nginx -t`, but I am wondering if there is a native route to check.

The server configs can have additional directives added outside of the PHP-speciflc `location` blocks, if that makes it more viable.

Thank you, and best wishes.

Pete