Advertise WebCal calendar URLs (feature request)

[belidzs]

According to this a CalDav server can advertise Webcal calendars. These are typically used to access read-only, shared calendars.

DAVdroid recognizes Webcal calendars in the calendar home set which are published with resourcetype: subscribed and shows them in the DAVdroid account activity. If you select such a Webcal collection for synchronization, DAVdroid passes the URL to an installed Webcal-capable app like ICSdroid so that this app can subscribe to the calendar.

It would be nice if I could add these calendar URLs to my account so DAVdroid and other clients would display those extra calendars automagically.

[ialokim]

Would be really great to see this functionality added!

Some research (e.g. here) showed me the "advertisement" should at least contain the following xml:

 <d:response>
  <d:href>/<user>/<calendar-name>/</d:href>
  <d:propstat>
   <d:prop>
    <d:resourcetype>
     <d:collection/>
     <cs:subscribed/>
    </d:resourcetype>
    <cs:source>
     <d:href>http://www.somesite.com/public-calendar.ics</d:href>
    </cs:source>
   </d:prop>
   <d:status>HTTP/1.1 200 OK</d:status>
  </d:propstat>
 </d:response>

So, instead of <c:calendar/>, it should contain <cs:subscribed/> and an <cs:source> tag for specifying the (public) ics file. (Where 'cs' would be the calendarserver namespace, e.g. xmlns:cs="http://calendarserver.org/ns/".)

[leso-kn]

The subscribed calendars could be stored inside a single .props file in the root of each collection (e.g. .subscriptions.props).

Like this each user could have their own subscriptions in a multi user instance - given that each collection refers to one user.

[leso-kn]

Any update on this? @Kozea

[dorchain]

I second the request.

[MrPixelized]

I, too, second the request.

[miklcct]

Any update on this?

[maartenweyns]

Came here to leave a comment, this feature would be highly appreciated!

[tunbridgep]

I would also really like this feature.

[leso-kn]

Update: This issue has been open for a while and I finally found some time to look into it again. I'd like to present a proposed implementation over at PR #1229.

Note: For the moment webcal subscriptions have to be added manually. The PR adds the relevant backend functionality for Radicale to advertise webcal subscriptions, internally stored as collections. A second step would be to add a more user-friendly way to add those subscriptions (e.g. via the Radicale web interface).

[MrPixelized]

Wow! I'm really shocked to see that the changes are that simple. Great work! :D

[mmBesar]

This is the only feature missing, for me, in this great project.

[JadeVane]

I second the request. There are still many people waiting for this feature after such a long time, I believe this feature needs to be put on the agenda.

[6801318d8d]

@Kozea can we at least merge the PR leso-kn #1229?

I second this FR

[pbiering]

#1229 merged into 3.2-devel