995828 - Cannot update Yahoo! calendars

Status: RESOLVED FIXED

(Firefox OS Graveyard :: Gaia::Calendar, defect)

Description

[Gareth Aye [:gaye] (back from PTO)]

Steps to reproduce:

1. Open calendar.
2. Sync a Yahoo! calendar and note that all of your events get fetched.
3. Open calendar.yahoo.com.
4. Create a new event using Yahoo's calendar ui.
5. Go back to the calendar app.
6. Click the calendar's sync button.
7. Observe that your event is missing :(.

Comment 1

[Gareth Aye [:gaye] (back from PTO)]

^^ Blocking a 1.3 blocker

Comment 2

[Gareth Aye [:gaye] (back from PTO)]

So after some investigation, my diagnosis is that this is a bug in Yahoo!'s "ctag" (like etag but for calendars) implementation. I believe this because

1. I fetch a Yahoo! calendar with the calendar app by sending a PROPFIND to https://caldav.calendar.yahoo.com/dav/boot2gecko/Calendar. This returns https://gist.github.com/gaye/686909863e54703db0ed.
2. I log into Yahoo!'s web, calendar ui and create an event.
3. I hit the manual sync button which sends another PROPFIND to https://caldav.calendar.yahoo.com/dav/boot2gecko/Calendar.
4. I get the exact same xml response https://gist.github.com/gaye/686909863e54703db0ed.

Since <CS:getctag>1-401</CS:getctag> has not changed and since the extension (see spec here http://svn.calendarserver.org/repository/calendarserver/CalendarServer/trunk/doc/Extensions/caldav-ctag.txt) states that the getctag property will change if changes (that clients should download) are made to my calendar, the calendar app rightly does not try to fetch updates from Yahoo! and does not do a REPORT.

Comment 3

[Gareth Aye [:gaye] (back from PTO)]

Pinged my contacts at Yahoo! to see if they can reproduce and fix this on their side.

Comment 4

[Dylan Oliver [:doliver]]

Confirmation from Yahoo:

> Yes, We are aware of a recurring issue with cache invalidation on couple
> of our hosts. Looks like it has happened again. This will be resolved in
> a day. Also, We are working on a better permanent fix, which might take few weeks.

Clearing the blocking flag on this one, leaving open to track until Yahoo is able to confirm a fix.

Comment 6

[Gareth Aye [:gaye] (back from PTO)]

Confirmed fixed.