Expose subscribed webcal calendars via CalDAV

[grafenhofer]

The calendar app has recently gained support for subscribing to third party webcal calendars (see owncloud/calendar#132). It would be great to expose these imported calendars via CalDAV (e.g. to mobile clients). Nextcloud would act as a kind of proxy service. One usecase is increased privacy for (mobile) users (only the Nextcloud server connection gets exposed to the original webcal provider).

Related owncloud issue: owncloud/core#26193

[raimund-schluessler]

Implementing a server side handling of WebCal would also allow to query a subscribed calendar in certain intervals, e.g. monthly or once a year. This would reduce the server load on public WebCal servers as requested e.g. on http://www.ifeiertage.de/

[marmeladema]

I am also interrested in this feature.
My use case is that i have some friends sharing their google calendar with me and i don't want to rely on anotherr app on every devices and subscribe to all their ics calendars on all my devices.

Thank you !

[georgehrke]

Please refrain from commenting when you can't add anything new. Use Github Reactions instead. :)