Configurable listen host

[tglman]

Hi,

I was trying this nice project, and I noticed that the listening host is not configurable, as it is hard-coded to 0.0.0.0 here it would be cool if this would be configurable, as often the service would be run behind a proxy, and in this case is better to hardening the receiving connections to a specific IP (like 127.0.0.1 or the ip of the proxy host).

Thank you for the nice job

[explodingcamera]

good idea 👍 will be part of the next release