[Akonadi] [Bug 349581] Akonadi DAV Resource does not sync all calendars (at least on Communigate or ownCloud)

[Grégory Oestreicher]

https://bugs.kde.org/show_bug.cgi?id=349581

--- Comment #15 from Grégory Oestreicher <greg at kamago.net> ---
(In reply to Tim Eberhardt from comment #14)
> Hm... that's really bad news, because it renders Kontact unusable and I and
> some of my colleagues have to switch to Thunderbird.

Well, there's still the good new that it will work (confirmed here) with the
stable release coming after Applications/15.08.

> Is that query by time range a feature that was introduced some months ago in
> Akonadi?

Yes, this was added to lower the server load when retrieving big calendars for
which sync would often fail.

> Because it used to work for years now and suddenly stopped working
> while all other clients are still working (at least Android, iOS,
> Thunderbird)!

I took a look at Thunderbird source and they're using a PROPFIND to list all
items in the calendar while the resource uses a calendar-query REPORT (this is
due to some design constraints where the resource has to know the item
mime-type ahead of time). Both methods are valid.

> This is why it's hard to imagine that it should be only
> Communigates fault.

Well, it's the resource "fault" to use a calendar-query REPORT to list items
for certain types if you want to go this way. But adding in the time-range just
showed that Communigate doesn't support this. Maybe you can report this bug to
this product support team.

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