Hi.
I'm using client, which doesn't support discovery and need full URL.
Some how-to suggest using
/dav.php/addressbooks/user/default
and other
/card.php/addressbooks/user/default
What the difference?
Also installation guide
http://sabre.io/baikal/install/ in web server config sample contains
RewriteRule /.well-known/carddav /dav.php [R,L]
why not
RewriteRule /.well-known/carddav /card.php [R,L]