The main reason for making subrequests is that we're getting a bunch of WEBDAV requests bundled in the POSTed request. We don't want to handle those in perl, as mod_dav was built to do it. We are already using the $r->pnotes for passing the data from the handler to the input filter.

An other option would be using LWP - but that seems quite stupid, as we would loose the whole request environment.

A third option would be writing xs code for gluing perl to mod_dav. If one has that code handy already, I'd be more than interested in trying that way