Does Varnish support unix domain socket files?

Does varnish support unix socket files?

I'd like to accelerate my website by adding a varnish reverse proxy (HTTP accelerator/cache) before my web server. My web server's virtual host is currently configured to listen for connections on a "UNIX-domain socket". For more info on this config, see the "path" argument for the "listen" directive in NGINX:

• https://nginx.org/en/docs/http/ngx_http_core_module.html#listen

Is it possible for varnish to communicate to my existing nginx server's config over a unix domain socket file as its backend?

And is it possible for varnish to also itself listen on a domain socket?

Varnish has had support for Unix Domain Sockets (UDS) for both clients and backend servers since Varnish 6.0 was released in March 2018.

You can define a backend to use a UDS using the .path field in the backend declaration. Or by using the -b argument in varnishd.

Varnish itself can listen on a UDS using the -a argument when starting varnishd