Subject: Bug with Caldav - unable to sync with Calengoo client
I am using mailcow + sogo. This may be related to bug https://bugs.sogo.nu/view.php?id=5674 Caldav doesn’t seem to work with few clients that require stricter compliance. It works ok with Davx5 (Android) clients which are more forgiving. I am using a client called Calengoo which refuses to sync with Sogo. I opened a ticket with them saying it’s a bug on their part and also gave them access to my server to test. Here’s what they came back with … ``` The problem is, that your calendar is not a calendar, it is only a "collection": <D:resourcetype> <D:collection /> </D:resourcetype> Instead it should look like this: <d:resourcetype> <d:collection/> <c:calendar/> </d:resourcetype> You can find further explanations here: https://sabre.io/dav/building-a-caldav-client/ I.e. your server seems to have a bug. It does not correctly specify the calendar as a calendar. And when I try to load the events (ignoring that it is not a calendar) of the calendar either using "sync-collection" or "calendar-query" it always returns error "501 - Not implemented". So unfortunately it seems that your server is not a real CalDAV server. Maybe they are still developing it and will fix these problems in the future. If DAVx5 can handle this, then I would suggest to sync that way. CalenGoo requires CalDAV compliant servers to sync with, sorry. Actually I don't know how to load the events if your server always responds with "Not implemented". I have already tried to reduce the "sync-collection" and "calendar-query" commands to the bare minimum but nevertheless I could not receive my test events from your server. Something seems to be very wrong with the CalDAV part of your server, sorry! 😕 Maybe you should try "NextCloud" instead? That works fine as far as I know. Please don't hesitate to contact me again if you have further questions! ```
