407588 - All repeating events moved from WebDav to CalDav disappear after November 2008

Status: RESOLVED INVALID

(Calendar :: Provider: CalDAV, defect)

Description

[dekkerdreyer]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.11) Gecko/20071127 Firefox/2.0.0.11
Build Identifier: Lightning 0.7 release on Thunderbird 2.0.0.9 (20071031)

All my repeating events stop repeating after November 2008.  This appears to only be an issue with a CalDav server.  Lightning, connected to Darwin Calendar Server, doesn't show repeating events past November 2008.  The same event, saved on a WebDav, works fine.

It is unknown if this is a problem with Darwin Calendar Server or Lightning, but the Mulberry calendar program connected to the same CalDav calendar does show the repeating event beyond November 2008 as expected.

Reproducible: Always

Steps to Reproduce:
1. Create a repeating event on a CalDav (such as Darwin Calendar Server)

Actual Results:  
Event repeats through November 2008, then stops.

Expected Results:  
Event repeats without stopping.

This is a subversion checkout of the latest Darwin Calendar Server.  Mulberry calendar client does not exhibit same issue.

If the event created is a daily or weekly event, it is visible in "Month" view for November 2008 but not for December 2008.  When the view is changed to "Multiweek", the view for "Weeks 48-52" (starting with November 23rd, 2008) shows the repeating event every week (including visible part of December 2008 up through the 27th).  Changing the view to "Weeks 49-1" (starting with November 30th, 2008) causes the previously displayed events to disappear.

Comment 1

[dekkerdreyer]

Attachment: Multiweek view, weeks 48-52

Comment 2

[dekkerdreyer]

Attachment: Multiweek view, weeks 49-1

Comment 3

[Bruno Browning]

I can confirm that this happens with Apple CalendarServer, but also that it does *not* happen with Bedework, Chandler Server, nor DAViCal. Wiresharking one of the requests described above shows CalendarServer returning an emply multistatus; it looks to me very much like CalendarServer is not expanding recurring events farther than about a year in the future. Since that's described as a MUST in para 7.4 of the spec I'm thinking this is probably an Apple bug rather than a Mozilla one. Leaving this one open for now, though, pending further investigation.

Comment 4

[Bruno Browning]

Glancing at the CalendarServer source, it by default expands recurring events 356 days in the future, but should still be expanding them past that as needed for specific queries. So it looks to me like the bug here is an Apple bug rather than a Mozilla one, and I'm closing the Mozilla one. Please re-open if you find reasons to think that I'm wrong.

->INVALID