Open files without mounting webdav fs

[karpovr]

Hi!
Is it possible to use the library for opening files (r/w) by clients directly from webdav server without mounting it as remote file system?
My task is to provide an user of a web-application a link to a file on webdav server for editing using native application (i.e. LibreOffice Writer). This client supports webdav protocol, however it fails to open files from dav-server (on actix_web).