[OT] file transfer over http?

["Benjamin J. Weiss" <benjamin weiss name>]

Okay, this is off topic, but I haven't found it on the internet (or if I
did, it wasn't the answer I was looking for, LOL)

If I put a file on my apache web server and then put a link to that file on
a web page, then somebody clicks on the link and downloads the file, is it
over ftp or http?  I could have sworn it's over http, but can't find the rfc
that defines file transfer over http.  I've looked at rfc 1945 and 2068, but
I can't see where they talk about file transfers (though they are LONG
documents and I might have missed it).

Anybody know which it is, and have a reference to back it up?

Thanks!

Ben