Thunderbird Lightning caldav sync doesn't show any data/events

Question

when i try to synchronize my caldav server implementation with Thunderbird 45.4.0 and Lightning 4.7.4 (one particular calendar collection) it doesnt show any data or events in the calendar though the last call of the sequence provided the data.

In the Thunderbird error log i can see one error:

Zeitstempel: 07.11.16, 14:21:12
Fehler: [calCachedCalendar] replay action failed: null,
uri=http://127.0.0.1:8003/sap/sports/webdav/appsvc/webdav/services/
server.xsjs/cal/_D043133/, result=2147500037, op=[xpconnect wrapped
calIOperation]
Quelldatei:
file:///Users/d043133/Library/Thunderbird/Profiles/hfbvuk9f.default/
extensions/%7Be2fda1a4-762b-4020-b5ad-a41df1933103%7D/calendar-
js/calCachedCalendar.js
Zeile: 327

the call sequence is as follows (detailed content via gist-links):

1. Propfind Request - Response
2. Options Request - Response
3. Propfind Request - Response
4. Report Request - Response - Response Raw

The synchronization with other clients like macOS-calendar and ios-calendar works in principle and shows the data. Does anyone has a clue what is going wrong here?

Answer 1

i was able to find the cause of the above issue by debugging Thunderbird as propsed by Philipp. The Report Response has http status code 200, but as it is a multistatus response Thunderbird/Lightning expects status code 207 ;-)

Thanks for the hints!

Answer 2

Not sure whether that is the cause but I can see two incorrect things:

a) Your <href/> property has trailing spaces:

<d:href>/sap/sports/webdav/appsvc/webdav/services/server.xsjs/cal/_D043133/EVENT%3A070768ba5dd78ff15458f1985cdaabb1.ics
</d:href>

b) your ORGANIZER property is not a valid URI

ORGANIZER:_D043133