http/2 and mail.de not working with DAVdroid 1.0.8

Weze

Hi,
after upgrading to 1.0.8, my connection to my mail.de calender/contacts were broken.
I removed all the app data and app itself and after a clean install, I tried to add a new account using email/password of my (mail.de account).
My problem looks quite similar to the one here.
But I can’t force mail.de to modify their installation to shut off http/2
This is what I get:

LOGS:
2016-05-07 10:30:41 1 [ui.setup.DavResourceFinder] Finding initial carddav service configuration
2016-05-07 10:30:41 1 [ui.setup.DavResourceFinder] No principal found at user-given URL, trying to discover
2016-05-07 10:30:41 1 [ui.setup.DavResourceFinder] Looking up SRV records for _carddavs._tcp.mail.de
2016-05-07 10:30:41 1 [ui.setup.DavResourceFinder] Found carddav service at https://adressbuch.mail.de:443
2016-05-07 10:30:41 1 [ui.setup.DavResourceFinder] Trying to determine principal from initial context path=https://adressbuch.mail.de/.well-known/carddav
2016-05-07 10:30:41 1 [HttpClient$1] --> PROPFIND https://adressbuch.mail.de/.well-known/carddav http/1.1
2016-05-07 10:30:41 1 [HttpClient$1] Content-Type: application/xml; charset=utf-8
2016-05-07 10:30:41 1 [HttpClient$1] Content-Length: 198
2016-05-07 10:30:41 1 [HttpClient$1] Depth: 0
2016-05-07 10:30:41 1 [HttpClient$1] 
2016-05-07 10:30:41 1 [HttpClient$1] <?xml version='1.0' encoding='UTF-8' ?><propfind xmlns="DAV:" xmlns:CAL="urn:ietf:params:xml:ns:caldav" xmlns:CARD="urn:ietf:params:xml:ns:carddav"><prop><current-user-principal /></prop></propfind>
2016-05-07 10:30:41 1 [HttpClient$1] --> END PROPFIND (198-byte body)
2016-05-07 10:31:11 1 [ui.setup.DavResourceFinder] carddav service discovery failed
EXCEPTION java.net.SocketTimeoutException: timeout
        at okhttp3.internal.framed.FramedStream$StreamTimeout.newTimeoutException(FramedStream.java:600)
        at okhttp3.internal.framed.FramedStream$StreamTimeout.exitAndThrowIfTimedOut(FramedStream.java:608)
        at okhttp3.internal.framed.FramedStream$FramedDataSink.emitDataFrame(FramedStream.java:505)
        at okhttp3.internal.framed.FramedStream$FramedDataSink.close(FramedStream.java:545)
        at okio.RealBufferedSink.close(RealBufferedSink.java:241)
        at okhttp3.internal.http.HttpEngine$NetworkInterceptorChain.proceed(HttpEngine.java:705)
        at at.bitfire.davdroid.HttpClient$PreemptiveAuthenticationInterceptor.intercept(HttpClient.java:153)
        at okhttp3.internal.http.HttpEngine$NetworkInterceptorChain.proceed(HttpEngine.java:681)
        at at.bitfire.davdroid.HttpClient$UserAgentInterceptor.intercept(HttpClient.java:139)
        at okhttp3.internal.http.HttpEngine$NetworkInterceptorChain.proceed(HttpEngine.java:681)
        at okhttp3.internal.http.HttpEngine.readResponse(HttpEngine.java:563)
        at okhttp3.RealCall.getResponse(RealCall.java:241)
        at okhttp3.RealCall$ApplicationInterceptorChain.proceed(RealCall.java:198)
        at okhttp3.logging.HttpLoggingInterceptor.intercept(HttpLoggingInterceptor.java:203)
        at okhttp3.RealCall$ApplicationInterceptorChain.proceed(RealCall.java:187)
        at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:160)
        at okhttp3.RealCall.execute(RealCall.java:57)
        at at.bitfire.dav4android.DavResource.propfind(DavResource.java:264)
        at at.bitfire.davdroid.ui.setup.DavResourceFinder.getCurrentUserPrincipal(DavResourceFinder.java:329)
        at at.bitfire.davdroid.ui.setup.DavResourceFinder.discoverPrincipalUrl(DavResourceFinder.java:311)
        at at.bitfire.davdroid.ui.setup.DavResourceFinder.findInitialConfiguration(DavResourceFinder.java:137)
        at at.bitfire.davdroid.ui.setup.DavResourceFinder.findInitialConfiguration(DavResourceFinder.java:87)
        at at.bitfire.davdroid.ui.setup.DetectConfigurationFragment$ServerConfigurationLoader.loadInBackground(DetectConfigurationFragment.java:143)
        at at.bitfire.davdroid.ui.setup.DetectConfigurationFragment$ServerConfigurationLoader.loadInBackground(DetectConfigurationFragment.java:126)
        at android.support.v4.content.AsyncTaskLoader.onLoadInBackground(AsyncTaskLoader.java:296)
        at android.support.v4.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:54)
        at android.support.v4.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:42)
        at android.support.v4.content.ModernAsyncTask$2.call(ModernAsyncTask.java:128)
        at java.util.concurrent.FutureTask.run(FutureTask.java:237)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
        at java.lang.Thread.run(Thread.java:818)

2016-05-07 10:31:11 1 [ui.setup.DavResourceFinder] Finding initial caldav service configuration
2016-05-07 10:31:11 1 [ui.setup.DavResourceFinder] No principal found at user-given URL, trying to discover
2016-05-07 10:31:11 1 [ui.setup.DavResourceFinder] Looking up SRV records for _caldavs._tcp.mail.de
2016-05-07 10:31:11 1 [ui.setup.DavResourceFinder] Found caldav service at https://kalender.mail.de:443
2016-05-07 10:31:11 1 [ui.setup.DavResourceFinder] Trying to determine principal from initial context path=https://kalender.mail.de/.well-known/caldav
2016-05-07 10:31:11 1 [HttpClient$1] --> PROPFIND https://kalender.mail.de/.well-known/caldav http/1.1
2016-05-07 10:31:11 1 [HttpClient$1] Content-Type: application/xml; charset=utf-8
2016-05-07 10:31:11 1 [HttpClient$1] Content-Length: 198
2016-05-07 10:31:11 1 [HttpClient$1] Depth: 0
2016-05-07 10:31:11 1 [HttpClient$1] 
2016-05-07 10:31:11 1 [HttpClient$1] <?xml version='1.0' encoding='UTF-8' ?><propfind xmlns="DAV:" xmlns:CAL="urn:ietf:params:xml:ns:caldav" xmlns:CARD="urn:ietf:params:xml:ns:carddav"><prop><current-user-principal /></prop></propfind>
2016-05-07 10:31:11 1 [HttpClient$1] --> END PROPFIND (198-byte body)
2016-05-07 10:31:12 1 [ui.setup.DavResourceFinder] caldav service discovery failed
EXCEPTION java.io.IOException: stream was reset: REFUSED_STREAM
        at okhttp3.internal.framed.FramedStream.getResponseHeaders(FramedStream.java:145)
        at okhttp3.internal.http.Http2xStream.readResponseHeaders(Http2xStream.java:149)
        at okhttp3.internal.http.HttpEngine.readNetworkResponse(HttpEngine.java:723)
        at okhttp3.internal.http.HttpEngine.access$200(HttpEngine.java:81)
        at okhttp3.internal.http.HttpEngine$NetworkInterceptorChain.proceed(HttpEngine.java:708)
        at at.bitfire.davdroid.HttpClient$PreemptiveAuthenticationInterceptor.intercept(HttpClient.java:153)
        at okhttp3.internal.http.HttpEngine$NetworkInterceptorChain.proceed(HttpEngine.java:681)
        at at.bitfire.davdroid.HttpClient$UserAgentInterceptor.intercept(HttpClient.java:139)
        at okhttp3.internal.http.HttpEngine$NetworkInterceptorChain.proceed(HttpEngine.java:681)
        at okhttp3.internal.http.HttpEngine.readResponse(HttpEngine.java:563)
        at okhttp3.RealCall.getResponse(RealCall.java:241)
        at okhttp3.RealCall$ApplicationInterceptorChain.proceed(RealCall.java:198)
        at okhttp3.logging.HttpLoggingInterceptor.intercept(HttpLoggingInterceptor.java:203)
        at okhttp3.RealCall$ApplicationInterceptorChain.proceed(RealCall.java:187)
        at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:160)
        at okhttp3.RealCall.execute(RealCall.java:57)
        at at.bitfire.dav4android.DavResource.propfind(DavResource.java:264)
        at at.bitfire.davdroid.ui.setup.DavResourceFinder.getCurrentUserPrincipal(DavResourceFinder.java:329)
        at at.bitfire.davdroid.ui.setup.DavResourceFinder.discoverPrincipalUrl(DavResourceFinder.java:311)
        at at.bitfire.davdroid.ui.setup.DavResourceFinder.findInitialConfiguration(DavResourceFinder.java:137)
        at at.bitfire.davdroid.ui.setup.DavResourceFinder.findInitialConfiguration(DavResourceFinder.java:88)
        at at.bitfire.davdroid.ui.setup.DetectConfigurationFragment$ServerConfigurationLoader.loadInBackground(DetectConfigurationFragment.java:143)
        at at.bitfire.davdroid.ui.setup.DetectConfigurationFragment$ServerConfigurationLoader.loadInBackground(DetectConfigurationFragment.java:126)
        at android.support.v4.content.AsyncTaskLoader.onLoadInBackground(AsyncTaskLoader.java:296)
        at android.support.v4.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:54)
        at android.support.v4.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:42)
        at android.support.v4.content.ModernAsyncTask$2.call(ModernAsyncTask.java:128)
        at java.util.concurrent.FutureTask.run(FutureTask.java:237)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
        at java.lang.Thread.run(Thread.java:818)



SOFTWARE INFORMATION
DAVdroid version: 1.0.8 (99) Wed Apr 27 09:44:38 MESZ 2016
Installed from: org.fdroid.fdroid
JB Workaround installed: no

CONFIGURATION
System-wide synchronization: automatically

SQLITE DUMP
android_metadata
        |  locale |
        |  de_DE |
----------
settings
        |  setting | value |
        |  hint_OpenTasksNotInstalled | 0 |
----------
services
        |  _id | accountName | service | principal |
----------
sqlite_sequence
        |  name | seq |
----------
homesets
        |  _id | serviceID | url |
----------
collections
        |  _id | serviceID | url | readOnly | displayName | description | color | timezone | supportsVEVENT | supportsVTODO | sync |
----------

SYSTEM INFORMATION
Android version: 5.1.1 (LMY49H)
Device: Zuk Z1 (Z1)

So now my contacts/calendars on my cell phone are useless / non-functioning any more. Grrrr.
What to do now?

Bernd

mindbreaker

Hi,

Since 3rd may, my mail.de accounts expired the same problem with DAVdroid.
After successfully connected to mail.de calendar with Evolution under Linux, i get in contact with mail.de support team.
They now deactivated HTTP/2 and the issue is solved temporary. Its no problem on mail.de side!

They pointed to these bitfire threats:
https://forums.bitfire.at/topic/1082/owncloud-9-nginx-syncing-stopped
https://github.com/square/okhttp/issues/2506
https://forums.bitfire.at/topic/1083/http-2-and-mail-de-not-working-with-davdroid-1-0-8

So can we expect the issue will be solved by bitfire in the next releases?

regards

rfc2822

Please follow up in nginx HTTP/2 incompatible with okhttp.

http/2 and mail.de not working with DAVdroid 1.0.8

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