Baikal "doesn't provide required carddav service"

[naman-dixit]

I am using DAVx5 2.5.5-gplay with Baikal 0.6.0, installed using this Docker container behind a Traefik 1.7.6 reverse proxy. When I try to add https://dav.namandixit.net/dav.php/ with proper user credentials, it gives an error saying “Couldn’t find CalDAV or CardDAV service”, with the log saying

2019-10-19 02:07:15 2311 [ui.setup.DavResourceFinder] https://dav.namandixit.net/dav.php/principals/naman/ doesn't provide required carddav service

Here is the log file when the login fails: davx5-info.txt

I have been trying all permutations of configurations that I can figure out, and nothing seems to work. Can someone please help?

[rfc2822]

Hi,

DAVx⁵ checks /dav.php/principals/naman/ for CalDAV/CardDAV:

2019-10-19 02:07:15 2311 [HttpClient] --> OPTIONS https://dav.namandixit.net/dav.php/principals/naman/
2019-10-19 02:07:15 2311 [HttpClient] --> END OPTIONS
2019-10-19 02:07:15 2311 [HttpClient] <-- 204 https://dav.namandixit.net/dav.php/principals/naman/ (67ms)
2019-10-19 02:07:15 2311 [HttpClient] access-control-allow-headers: User-Agent,Authorization,Content-type,Depth,If-match,If-None-Match,Lock-Token,Timeout,Destination,Overwrite,Prefer,X-client,X-Requested-With
2019-10-19 02:07:15 2311 [HttpClient] access-control-allow-methods: GET, POST, OPTIONS, PROPFIND, PROPPATCH, REPORT, PUT, MOVE, DELETE, LOCK, UNLOCK
2019-10-19 02:07:15 2311 [HttpClient] access-control-allow-origin: *
2019-10-19 02:07:15 2311 [HttpClient] access-control-expose-headers: Etag,Preference-Applied
2019-10-19 02:07:15 2311 [HttpClient] access-control-max-age: 1728000
2019-10-19 02:07:15 2311 [HttpClient] content-type: text/plain; charset=utf-8
2019-10-19 02:07:15 2311 [HttpClient] date: Fri, 18 Oct 2019 20:37:15 GMT
2019-10-19 02:07:15 2311 [HttpClient] server: nginx/1.17.3
2019-10-19 02:07:15 2311 [HttpClient] content-length: 0
2019-10-19 02:07:15 2311 [HttpClient] <-- END HTTP (0-byte body)

and expects DAV: calendar-access for CalDAV or DAV: addressbook for CardDAV: https://gitlab.com/bitfireAT/davx5-ose/blob/cd9518c6194752d172d06f2bb12e2ec802419f2a/app/src/main/java/at/bitfire/davdroid/ui/setup/DavResourceFinder.kt#L296

In your case, those headers are not sent for /dav.php/principals/naman/, so DAVx⁵ wont’t detect/use that URL. (Note that your server sends the correct headers for /dav.php/, but that’s not enough.) Normally, Baïkal sends those headers correctly.

Does that help?

[naman-dixit]

@rfc2822 I see, thank you for the help. Do you know why this might be happening, or where should I look into for debugging this?

[rfc2822]

@naman-dixit I guess it’s related to your proxy configuration. Can you access the server and maybe try curl -vX OPTIONS https://dav.namandixit.net/dav.php/principals/naman/ directly?

[naman-dixit]

@rfc2822 Sure, here is the output of curl -vX OPTIONS http://dav.namandixit.net/dav.php/principals/naman/

*   Trying 139.59.36.199:80...
* TCP_NODELAY set
* Connected to dav.namandixit.net (139.59.36.199) port 80 (#0)
> OPTIONS /dav.php/principals/naman/ HTTP/1.1
> Host: dav.namandixit.net
> User-Agent: curl/7.65.3
> Accept: */*
> 
* Mark bundle as not supporting multiuse
< HTTP/1.1 204 No Content
< Access-Control-Allow-Headers: User-Agent,Authorization,Content-type,Depth,If-match,If-None-Match,Lock-Token,Timeout,Destination,Overwrite,Prefer,X-client,X-Requested-With
< Access-Control-Allow-Methods: GET, POST, OPTIONS, PROPFIND, PROPPATCH, REPORT, PUT, MOVE, DELETE, LOCK, UNLOCK
< Access-Control-Allow-Origin: *
< Access-Control-Expose-Headers: Etag,Preference-Applied
< Access-Control-Max-Age: 1728000
< Content-Type: text/plain; charset=utf-8
< Date: Sun, 20 Oct 2019 12:24:23 GMT
< Server: nginx/1.17.3
< X-Cache: MISS from nm11.iitb.ac.in
< X-Cache-Lookup: MISS from nm11.iitb.ac.in:80
< Via: 1.1 nm11.iitb.ac.in (squid/3.3.9)
< Connection: close
< 
* Closing connection 0

I really appreciate you trying to help me, I am at my wit’s ends here.

[rfc2822]

@naman-dixit Ok, so curl gets the same result as DAVx⁵. Can you do this command from inside the container, to bypass the proxy? For some reason, the DAV header is omitted in the response.

[naman-dixit]

@rfc2822 I replaced “baikal:nginx” docker image with “baikal:0.6.0-apache”, and it now seems to work. I am way too fed up to debug what is wrong with the nginx config, but I am documenting this here in case someone hits the same issue. The apache image is quite a way bigger in size, but at least it works.

[rfc2822]

Thanks for the update!