Reload on SIGHUP

[sirex]

It would be useful to have a possibility to reload uvicorn manually with SIGHUP signal.

Daemon programs sometimes use SIGHUP as a signal to restart themselves, the most common reason for this being to re-read a configuration file that has been changed.
-- https://en.wikipedia.org/wiki/SIGHUP

For example if I change some configuration files, I would like to do:

$ kill -HUP $PID

Now terminate uvicorn and start it again.

[T-101]

+1 for this, this is the way I do things with gunicorn. It's a delightfully easy way to hotreload latest commits to a dockerized application by just saying docker exec app kill -HUP 1

[vvanglro]

The new process manager already supports this feature. #2183

You can update uvicorn to >=0.30.0.

kill -SIGHUP $PID