@Cyborg
You can mount your WebDAV share with the webdav-handler beta. The version I'm using thinks files that don't exist exist, so be careful - especially when deleting files - as I don't remember what state the public one is in (may be the same)
http-handler only accesses files hosted on HTTP and HTTPS, it doesn't work as a browsable filesystem.
Conversely, you can't use webdav-handler to access random HTTP locations, it will only connect to configured WebDAV shares.
The reason they are part of the same project is because originally I planned to (and, in fact, did) add WebDAV support to http-handler. The resultant buggy mess ended up getting scrapped and re-written purely for WebDAV use, leaving the original http-handler on the old pre-WebDAV code base.
Incidentally this is why webdav-handler is v3.x rather than 1.x
(2.x was the earlier one I abandoned)
If somebody wants to take this over and fix it up, let me know. I don't have much motivation to do anything with it as I tend to use a local Samba share these days.