How to bind to Unix domain socket instead of localhost

[flux77]

Is it possible to bind Radicale to a Unix domain socket instead of localhost? I tried this in my configuration file:

[server]
hosts = /tmp/radicale.sock

But Radicale refuses to start. It gives this error message:

Invalid configuration: Invalid list_of_ip_address value for option 'hosts' in section 'server' in config file '/usr/local/etc/radicale/config': '/tmp/radicale.sock'

Is there a correct way to do this?

[pbiering]

"radicale" is a network service, what would be the purpose for using a "unix domain socket"?

[Unrud]

The built-in WSGI server is minimalistic and doesn't support it. You have to use something like uWSGI or Gunicorn.

@pbiering For example, it can be useful in combination with a local reverse proxy. You don't need to expose a port on the loopback interface.

[pbiering]

Again what learnt, found also that Apache is supporting it:

https://stackoverflow.com/questions/51243332/apache-proxy-pass-to-unix-domain-socket

Can be helpful to prevent at least sniffing on loopback interface e.g. with ngrep for potentially unencrypted content. But potentially the SELinux policy must be adjusted beside adding support in radicale