Something I encountered last week.
- wanted to test running caddy without https and without being open to the world, to turn off automatic https.
- Googled and came up with auto_https off documentation that I read.
- It did not work, http still did not work
- Googled more and landed on forum page that explained why auto_https is not working and that it needs explicitly stated
http:\\or port:80in the address. Otherwise caddy will listen by default for only https.
It was no biggie, that forum post is literally the second google result for auto_https and does good job, but you asked and I have it fresh in memory...