Calendar gets synchronized, but Contacts don't (OC 7)

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Hello!

After updating to the latest version of DAVdroid, I’ve been having problems with my address book. While calendar synchronization works flawless, contacts just aren’t synchronized. Reinstalling DAVdroid did not resolve the issue. The server is running the latest version of ownCloud 7.

I’d appreciate any suggestions.

Let me post the log I got:

SYNCHRONIZATION INFO
Synchronization phase: 7
Account name: [name]
Authority: com.android.contacts

HTTP REQUEST:
REPORT https://[server]/remote.php/carddav/addressbooks/[name]/contacts/
Content-Length: 184
Content-Type: application/xml; charset=utf-8
Depth: 1

<?xml version='1.0' encoding='UTF-8' ?><CARD:addressbook-query xmlns="DAV:" xmlns:CARD="urn:ietf:params:xml:ns:carddav"><prop><getetag /></prop><CARD:filter /></CARD:addressbook-query>

HTTP RESPONSE:
http/1.1 500 Internal Server Error
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Connection: close
Content-Security-Policy: default-src 'self'; script-src 'self' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; frame-src *; img-src *; font-src 'self' data:; media-src *
Content-Type: text/html; charset=utf-8
Date: Thu, 22 Oct 2015 08:46:23 GMT
Expires: Thu, 19 Nov 1981 08:52:00 GMT
OkHttp-Received-Millis: 1445503583748
OkHttp-Selected-Protocol: http/1.1
OkHttp-Sent-Millis: 1445503581823
Pragma: no-cache
Server: Apache/2.2.22 (Ubuntu)
Set-Cookie: oca1b99cf975=d3baigk87kbe3vbd1jmg43k1c3; path=/; HttpOnly
Set-Cookie: oca1b99cf975=emffe91vhpj00655odh0aj1eg1; path=/; secure; HttpOnly
Strict-Transport-Security: max-age=63072000; includeSubDomains
Strict-Transport-Security: max-age=31536000
Vary: Accept-Encoding
X-Content-Type-Options: nosniff
X-Frame-Options: Sameorigin
X-Powered-By: PHP/5.3.10-1ubuntu3.20
X-Robots-Tag: none
X-XSS-Protection: 1; mode=block



STACK TRACE:
at.bitfire.dav4android.exception.HttpException: 500 Internal Server Error
at.bitfire.dav4android.exception.HttpException: 500 Internal Server Error
	at at.bitfire.dav4android.DavResource.checkStatus(DavResource.java:281)
	at at.bitfire.dav4android.DavResource.checkStatus(DavResource.java:286)
	at at.bitfire.dav4android.DavAddressBook.addressbookQuery(DavAddressBook.java:68)
	at at.bitfire.davdroid.syncadapter.ContactsSyncManager.listRemote(ContactsSyncManager.java:118)
	at at.bitfire.davdroid.syncadapter.SyncManager.performSync(SyncManager.java:169)
	at at.bitfire.davdroid.syncadapter.ContactsSyncAdapterService$ContactsSyncAdapter.onPerformSync(ContactsSyncAdapterService.java:52)
	at android.content.AbstractThreadedSyncAdapter$SyncThread.run(AbstractThreadedSyncAdapter.java:259)

SOFTWARE INFORMATION
DAVdroid version: 0.9.0.3 (81) Thu Oct 22 10:25:24 MESZ 2015
Installed from: Google Play Store
JB Workaround installed: no

CONFIGURATION
System-wide synchronization: automatically


SYSTEM INFORMATION
Android version: 5.1.1 (klte-userdebug 5.1.1 LMY48W f3b4ed107c test-keys)
Device: samsung / Samsung Galaxy S5 (klte)

[edited by admin: added ``` prefix/postfix so that logs are monospace]

Thanks in advance,
Parexus

I’ve got the same error.

Same DAVDroid Version, from Playstore.

Not shure about the OC version, but definitely 7 or even older.

Same for me : Calendar ok but Contact no sync…

Your OwnCloud is defect. Please update to a recent version.

Oups sorry I didn’t see it was about OwnCloud…
I don’t use it but I have the same problem since the last update, so I will open my own topid…

It can’t be that defect, as it worked very well for more a year. Or could you give us a hint about what’s wrong with our OC version?

I, too, would rather downgrade to an earlier DAVdroid version (which worked great) than upgrade ownCloud which I haven’t done yet for a couple of reasons…

Would you happen to have any other suggestions?

Or could you give us a hint about what’s wrong with our OC version?

As you can see from the debug logs, your server responds with 500 Internal Server Error to a REPORT addressbook-query request.

I, too, would rather downgrade to an earlier DAVdroid version (which worked great) than upgrade ownCloud which I haven’t done yet for a couple of reasons…

You’re of course free to use any DAVdroid version you want

Would you happen to have any other suggestions?

DAVdroid has an ugly fallback-hack that falls back to PROPFIND when a server responds with some defined HTTP error codes (like 400 Bad Request and 403 Forbidden) to REPORT addressbook-query. This ugly fallback-hack will now be activated for the following status codes (on REPORT addressbook-query

• 400 Bad Request – this is what a server sends when it thinks the REPORT is invalid
• 403 Forbidden – some servers refuse the empty <filter/> and say that it’s not a supported filter type, so the correct response code for that is 403
• 500 Internal Server Error – some servers (like yours) just don’t know what to do and return an “all-catch” error
• 501 Not Implemented – that would be the right error code for a server that knows it MUST support REPORT addressbook-query, but it’s not implemented nevertheless.

So, with this ugly fallback-hack in the next DAVdroid release, you will (hopefully) be able to sync again with your OwnCloud 7 installations – but that doesn’t change anything about the fact that they’re defect.

@rfc2822 thank you very much for this detailed explanation and for the bugfix.

Should have been worked around by DAVdroid 0.9.0.4, can you please confirm?

It works!

Thank you very much for the quick fix!

Doesn’t work for me yet…

[info ] Preparing synchronization
[info ] Querying capabilities
[debug] Received <response> for http://...../owncloud/remote.php/carddav/addressbooks/deep/default/, status: null, properties: [getctag(http://calendarserver.org/ns/): GetCTag(cTag=1540),
supported-address-data(urn:ietf:params:xml:ns:carddav): null]
[info ] Server advertises VCard/4 support: false
[info ] Processing locally deleted entries
[info ] Locally preparing dirty entries
[info ] Uploading dirty entries
[info ] Checking sync state
[info ] Manual sync, ignoring CTag
[info ] Listing local entries
[info ] Listing remote entries
[info ] Comparing local/remote entries
[info ] Downloading remote entries
[info ] Downloading 0 contacts (10 at once)
[info ] Saving sync state
[info ] Saving CTag=1540

Edit: added ``` to make logs monospace…

@studerap It seems that your server tells DAVdroid there are 0 contacts. Please take verbose logs and post them as a snippet or something similar.