It's handy to have a program, easily compiled for multiple platforms, that can be told to simply serve a given directory, with optional HTTPS support, and no config files or dependencies—just cross-compile to the target arch/OS, scp it over, and run.
Without, you know, having to write it, even if Go's libraries make it fairly easy to do so.
My go-to (haha) for this is Goserve[1]. I'm not sure why I'd switch to this, except that it may now have more eyes on it after today's publicity (it's already got more stars than Goserve—a little advertising goes a long way)
Static file serving is a great tutorial project in Go. I wrote mine (https://github.com/biorisk/httpfolder) to include a file upload option too, but did not add some of the nicer features, e.g., https, in your project.
Not sure why you think this server was written to integrate into apps. If you can't think of a use for it, that's fine. But lots of other people do have uses for simple static web servers. Including people who don't have the knowledge, time, or patience to hand code a 20 line Go program every time they want to use one.
By integrate I meant interacting with your program, whatever that may be. With the go server, you get everything this program has without the concern of the code going stale or dying should the author abandon it.
Not necessarily. In addition, this kind of program can be really useful for development.
I use "python3 -m http.server" a lot when I'm just testing a bit of HTML/JS and don't want to setup a whole virtual host within Nginx/Apache. It just starts a static file server, on any platform.
