Hi Ken, we use the same approach as Apple ... yes, it is not required, but usually it works. JM On May 10, 2013, at 1:15 AM, Ken Murchison <murch@andrew.cmu.edu> wrote:

Hello,

I see that the client tries to store its settings with a PROPPATCH on DAV:current-user-principal. Per RFC 3744, a server isn't required to support PROPPATCH on principal resources, which the client can probably deduce from DAV:current-user-privilege-set. I wonder if doing the PROPPATCH on CALDAV:calendar-home-set would make more sense.

-- Kenneth Murchison Principal Systems Software Engineer Carnegie Mellon University