During updates, the server sends expected checksums to the client as
XML attributes. See these in revision 4429:
libsvn_ra_dav/fetch.c: start_element(), the ELEM_add_file case
mod_dav_svn/update.c: insert_checksum_attributes() and its callers
Checkouts, however, send the result_checksum as a new liveprop, see
these, also in revision 4429:
libsvn_ra_dav/fetch.c: svn_ra_dav__get_file()
mod_dav_svn/liveprops.c: dav_svn_insert_prop()
Updates should be getting their result_checksums the same way as
checkouts, since the liveprop is there anyway. So that attribute will
disappear, though the base-checksum stays (it wouldn't make any sense
for file foo to record its own base_checksums, as that's about the
base text for this particular update, not about foo itself).
However, one of the things we had to do before adding this live prop
to update responses was make the client tolerate it. See the same
revision's change to
libsvn_ra_dav/fetch.c: validate_element()
for how we did that. When that change has had a chance to propagate
to users, we can enable the live prop on the server and change the
client code to actually use the prop.
Bug
Major