Show HN: Goof – Easily offer a file/directory over a network

Hey HN! I've been practicing with Go, and actually built something that me and a couple other people have been using on a day-to-day basis.

I'm looking forward to feedback and observations. Any suggestions on how to make the code more idiomatic Golang-like, as well as pointers on the best way to get started with writing tests are especially encouraged!