Sunday, October 12, 2014

Lightning and CalDav

While the title of this [post is CALDav and Lightning,  most of the space is going to be taken up with Googles implementation as it is problematical and Google are all over the place with their documentation.  It has taken hours of trawling through Google help and support articles as well as support forums to finally put together all of the necessary bits for Google.  Yahoo on the other hand mange is in about 10 lines on one page.

Traditionally Mozilla have recommended the use of the gdata provider with Goggle calendars to create read write access to those calendars using XML. This process pre-dates Googles adoption of CalDavand requires the Gdata provider add-on as well as Lightning.   CalDav read write synchronisation requires no third party data provider and just works and works the same for other CalDav.

To create a CalDav connection to your Goggle calendars, first you need to establish your personal CalDav URL for connection to the calendar.  If you have a single calendar the calid is your email address.

  • In this example if your email address is then the URL is
  • Additional calendars have a calid issued by Google so using the base URL replace the calid with the correct Id for your calendar.


Enable CalDav synchronization.

Even though it is not referenced anywhere else the page says Select calendars to sync to your iPhone/iPad/iCal* following the asterisk shows or any other CalDAV device.So in typical style the option in there, but well navigate to and enable CalDav.

Note:- I had trouble with my CalDav Calendars on Google and found that I needed to use the config editor to change the preference network.http.spdy.enabled.http2draft to False  

Note that there are other network.http.spdy.enabled. preferences but only the http2draft appears to affect he outcome.  Bug 1081613 refers

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