So I've been working on an application on Windows that hooks into the WebClient service and Office applications on one end, and SharePoint on the other end, to do some advanced compression and such. Everything works fine most of the time with WebDAV and with the normal Office downloads when the WebClient service is completely disabled.
But every once in a while in Word 2007 when WebDAV is enabled, it just seems to completely ignore WebDAV and use the old Vermeer RPC communication instead.
I have so far been completely unable to reliably replicate this, so it makes it extremely difficult to test the functionality of my application when this protocol is being used.
So I was wondering if anybody knew under what circumstances Word 2007 would use Vermeer RPC for the handling of checking out and downloading documents from SharePoint. Does Word decide, or does SharePoint decide how and when to use it?