Cannot sync NC Calendar with Google Calendar

[GillesMoyse]

Context

I've got 3 calendars attached to my user. Some are shared with other users on my NC (thomas and melchior), some are shared publicly. "Gilles (Récital)" and "Gilles (perso)" belong to the user "gilles" and "Récital (Calendar)" is shared by another user.

I want to share "Gilles (perso)" with a Google Calendar user.

Steps to reproduce

1. Get the link for "Gilles (perso)"

2. In Google Calendar, copy the link in Other Calendars / Add by URL

3. Error "Could not fetch the URL" in Google Calendar

Expected behaviour

The shared calendar should appear in Google Calendar

Actual behaviour

It does not

Server configuration

Nextcloud version: (see Nextcloud admin page)
NextCloud v11.0.3, Calendar App v1.5.3

Integrity test :

No errors have been found.

Are you using encryption: yes

Are you using an external user-backend: no

Client configuration

Browser: Firefox 53.0.2

Operating system: Windows 10 version 1703 OS Build 15063.296

[EMiT57]

Hi,

The share is https://framagenda.org/index.php/apps/calendar/p/xxxxxxxxxxxxxxxxx
and if you use this link in in G Calendar -> no error, but no result :(

But on this share adress they are a button with and other link like webcal://framagenda.org/remote.php/dav/public-calendars/xxxxxxxxxxxxxxxx?export
and if you use this link in G Calendar, all work fine

Regards

[GillesMoyse]

Hi,

thanks for the tip, unfortunately I still have the same error on Google Calendar...

[MorrisJobke]

@georgehrke Any idea?

[georgehrke]

You have to publicly share the calendar and ics link you can find on the public sharing site.

The link u used is only meant for you and can only be accessed with your username / password

[georgehrke]

Can you manually access the dav public calendars link?

Are there any error logs in the server when you add it to google?

[prky]

I had the same issue, and discovered that the URL Google Calendar requires, is a modification of the webcal URL to replace webcal:// with https:// (or http:// if you're not using SSL).

So, what worked for me in Google Calendar to add as a URL was:

https://domain.com/remote.php/dav/public-calendars/xxxxxxxxxxxxxxxx?export

[GillesMoyse]

My NextCloud instance is hosted, so I can't access to the logs or DB.

I tried every address I could fetch from the calendar app:

• Primary CalDAV address: https://cloud.recital.ai/remote.php/dav/
• Link under the calendar: https://cloud.recital.ai/remote.php/dav/calendars/gilles/gilles-perso/
• OS/OS X CalDAV address: https://cloud.recital.ai/remote.php/dav/principals/users/gilles/
• Address next to "Public access": https://cloud.recital.ai/index.php/apps/calendar/p/AA1LMYCH8xxxxxxx

None of them work. It is killing me, but I'll go back to Google. I can't afford to spend so much time configuring basic functionalities.

[georgehrke]

https://cloud.recital.ai/remote.php/dav/public-calendars/AA1LMYCH8xxxxxxx?export works, as described by @prky

[GillesMoyse]

Very strange, it does not work, neither for me nor for my girlfriend. When we "Add by URL" the address we still have the error "We could not parse the calendar at the URL requested.". Does it work for you on your Google Agenda?

[georgehrke]

The url itself is correct, but i can't use it in google calendar either.

I guess its related to this: https://support.google.com/calendar/answer/45654?vid=0-672238030094-1504364668494&visit_id=1-636399614749886905-461172282&rd=1

Google Calendar only works with files that are one megabyte (1MB) or smaller.

Your file is 3.35MB

[GillesMoyse]

I also tried this option, exporting the whole calendar and import it in Google, but faced the 1MB limit too. What I'd like to do though is to sync the calendar - but the link does not work either. @prky, does the full link I provided work on your Google agenda, i.e. can you retrieve my events from your google agenda?

[prky]

@GillesMoyse If I try and add your calendar by URL (https://your.domain.com/remote.php/dav/public-calendars/XXXXXXXXXXXXXXXX?export) it attempts to load the calendar, then responds "We could not parse the calendar at the URL requested" - presumably due to it being 3.5MB with over 7000 entries in it.

Unfortunately that's a limitation on the Google side (1MB limit) not NextCloud.

If you want to import, perhaps try splitting it into multiple files as suggested at https://productforums.google.com/forum/?hl=en#!category-topic/calendar/calendar-not-loading/EqOUPboHrmU ?

[GillesMoyse]

Ok, thanks a lot, it's working! I first tried with another smaller calendar and it worked, so I removed older events using my desktop email client and it's working now.

By the way, could you please remove the calendar links form your previous comments, so that my calendar access is not accessible from anywhere...:)

[georgehrke]

By the way, could you please remove the calendar links form your previous comments, so that my calendar access is not accessible from anywhere...:)

Done, but you might still want to consider unpublishing and publishing the calendar again, so it gets a new token.

[GillesMoyse]

Thanks a lot, I didn't know we could change the token this way...

[Brice187]

@georgehrke does your subscribed NC-Calendar gets updated on google, if you create a new event? I think after the initial sync there is no further synchronization. :-(

[benyanke]

Maybe I'm missing something, but is there any solution other than setting to public? that's not something I'm willing to do...

I also have the issue of the one-time sync, and not updating after that. Perhaps a cache header is being set wrong, or is it google's issue?

[Brice187]

i have no solution, therefore i am using google till this issue may get fixed.

[torstenfabricius]

As far as I see it, there are issues on the Google side and not on the NC side.
Google likely has no interest to fix this type of issues, when users deside to use Google until Google stops breaking things.
Google is not payed by your wallet, but with your data.
Rather think about not using Google until Google fix the issue ...

Just my 2 ct.