Thank you for the report.However this is a bug in OC whch has to do with asomehow weird format of saving image data. Please follow up there:
Can't find calendars on server with "SSL proxy"
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Some webhosters don’t allow the user to use SSL certificates in cheaper webhosting packages, instead using an ssl proxy were content is accessed via another domain, e.g. http://ssl.webpack.de/ (for Hosteurope). The URL dav.myserver.tld/cal.php would become http://ssl.webpack.de/dav.myserver.tld/cal.php if accessed via the SSL proxy.
I could access the calendar on my server (Baïkal) via the HTTP URL, but if I want to access it via the SSL proxy URL, Davdroid complains about missing DAV capabilities (no CalDAV/CardDAV service available at this location)
Debug log for failure (HTTPS server):
06-28 13:50:38.163 14736-14736/at.bitfire.davdroid:sync I/davdroid.QueryServer﹕ onCreateLoader 06-28 13:50:38.203 14736-17292/at.bitfire.davdroid:sync I/davdroid.ResourceFinder﹕ *** Starting CardDAV resource detection 06-28 13:50:38.244 14736-17292/at.bitfire.davdroid:sync D/davdroid.ResourceFinder﹕ Looking up SRV records for _carddavs._tcp.ssl.webpack.de 06-28 13:50:38.304 14736-14736/at.bitfire.davdroid:sync W/EGL_emulation﹕ eglSurfaceAttrib not implemented 06-28 13:50:38.514 14736-17292/at.bitfire.davdroid:sync I/davdroid.ResourceFinder﹕ Looking up principal URL for service carddav; initial context: https://ssl.webpack.de/dav.myserver.tld/cal.php/calendars/myuser/default 06-28 13:50:38.583 14736-17292/at.bitfire.davdroid:sync V/davdroid.URIUtils﹕ Normalized URL /.well-known/carddav -> /.well-known/carddav 06-28 13:50:41.224 14736-17292/at.bitfire.davdroid:sync D/davdroid.ResourceFinder﹕ Well-known carddav service detection failed with HTTP error at.bitfire.davdroid.webdav.HttpException: 502 Bad Gateway at at.bitfire.davdroid.webdav.WebDavResource.checkResponse(WebDavResource.java:430) at at.bitfire.davdroid.webdav.WebDavResource.checkResponse(WebDavResource.java:404) at at.bitfire.davdroid.webdav.WebDavResource.propfind(WebDavResource.java:285) at at.bitfire.davdroid.resource.DavResourceFinder.getCurrentUserPrincipal(DavResourceFinder.java:278) at at.bitfire.davdroid.resource.DavResourceFinder.findResources(DavResourceFinder.java:61) at at.bitfire.davdroid.ui.setup.QueryServerDialogFragment$ServerInfoLoader.loadInBackground(QueryServerDialogFragment.java:117) at at.bitfire.davdroid.ui.setup.QueryServerDialogFragment$ServerInfoLoader.loadInBackground(QueryServerDialogFragment.java:95) at android.content.AsyncTaskLoader.onLoadInBackground(AsyncTaskLoader.java:301) at android.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:68) at android.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:56) at android.os.AsyncTask$2.call(AsyncTask.java:287) at java.util.concurrent.FutureTask.run(FutureTask.java:234) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) at java.lang.Thread.run(Thread.java:856) 06-28 13:50:41.234 14736-17292/at.bitfire.davdroid:sync D/davdroid.ResourceFinder﹕ Well-known service detection failed, trying initial context path https://ssl.webpack.de/dav.myserver.tld/cal.php/calendars/myuser/default 06-28 13:50:42.123 14736-14740/at.bitfire.davdroid:sync D/dalvikvm﹕ GC_CONCURRENT freed 1172K, 16% free 6617K/7852K, paused 7ms+25ms, total 278ms 06-28 13:50:46.234 14736-17292/at.bitfire.davdroid:sync V/davdroid.URIUtils﹕ Normalized URL /cal.php/calendars/myuser/default/ -> /cal.php/calendars/myuser/default/ 06-28 13:50:46.234 14736-17292/at.bitfire.davdroid:sync D/davdroid.WebDavResource﹕ Processing multi-status element: https://ssl.webpack.de/cal.php/calendars/myuser/default/ 06-28 13:50:46.264 14736-17292/at.bitfire.davdroid:sync D/davdroid.URIUtils﹕ Appended trailing slash to collection https://ssl.webpack.de/dav.myserver.tld/cal.php/calendars/myuser/default -> https://ssl.webpack.de/dav.myserver.tld/cal.php/calendars/myuser/default/ 06-28 13:50:46.284 14736-17292/at.bitfire.davdroid:sync I/davdroid.ResourceFinder﹕ Couldn't find current-user-principal for service carddav, assuming initial context path is principal path 06-28 13:50:49.234 14736-14740/at.bitfire.davdroid:sync D/dalvikvm﹕ GC_CONCURRENT freed 1293K, 17% free 6626K/7984K, paused 7ms+18ms, total 371ms 06-28 13:50:49.733 14736-17292/at.bitfire.davdroid:sync V/davdroid.URIUtils﹕ Normalized URL /cal.php/calendars/myuser/default/ -> /cal.php/calendars/myuser/default/ 06-28 13:50:49.753 14736-17292/at.bitfire.davdroid:sync D/davdroid.WebDavResource﹕ Processing multi-status element: https://ssl.webpack.de/cal.php/calendars/myuser/default/ 06-28 13:50:49.783 14736-17292/at.bitfire.davdroid:sync D/davdroid.URIUtils﹕ Appended trailing slash to collection https://ssl.webpack.de/dav.myserver.tld/cal.php/calendars/myuser/default -> https://ssl.webpack.de/dav.myserver.tld/cal.php/calendars/myuser/default/ 06-28 13:50:49.793 14736-17292/at.bitfire.davdroid:sync I/davdroid.ResourceFinder﹕ *** Starting CalDAV resource detection 06-28 13:50:49.793 14736-17292/at.bitfire.davdroid:sync D/davdroid.ResourceFinder﹕ Looking up SRV records for _caldavs._tcp.ssl.webpack.de 06-28 13:50:49.843 14736-17292/at.bitfire.davdroid:sync I/davdroid.ResourceFinder﹕ Looking up principal URL for service caldav; initial context: https://ssl.webpack.de/dav.myserver.tld/cal.php/calendars/myuser/default 06-28 13:50:49.873 14736-17292/at.bitfire.davdroid:sync V/davdroid.URIUtils﹕ Normalized URL /.well-known/caldav -> /.well-known/caldav 06-28 13:50:51.414 14736-17292/at.bitfire.davdroid:sync D/davdroid.ResourceFinder﹕ Well-known caldav service detection failed with HTTP error at.bitfire.davdroid.webdav.HttpException: 502 Bad Gateway at at.bitfire.davdroid.webdav.WebDavResource.checkResponse(WebDavResource.java:430) at at.bitfire.davdroid.webdav.WebDavResource.checkResponse(WebDavResource.java:404) at at.bitfire.davdroid.webdav.WebDavResource.propfind(WebDavResource.java:285) at at.bitfire.davdroid.resource.DavResourceFinder.getCurrentUserPrincipal(DavResourceFinder.java:278) at at.bitfire.davdroid.resource.DavResourceFinder.findResources(DavResourceFinder.java:108) at at.bitfire.davdroid.ui.setup.QueryServerDialogFragment$ServerInfoLoader.loadInBackground(QueryServerDialogFragment.java:117) at at.bitfire.davdroid.ui.setup.QueryServerDialogFragment$ServerInfoLoader.loadInBackground(QueryServerDialogFragment.java:95) at android.content.AsyncTaskLoader.onLoadInBackground(AsyncTaskLoader.java:301) at android.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:68) at android.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:56) at android.os.AsyncTask$2.call(AsyncTask.java:287) at java.util.concurrent.FutureTask.run(FutureTask.java:234) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) at java.lang.Thread.run(Thread.java:856) 06-28 13:50:51.414 14736-17292/at.bitfire.davdroid:sync D/davdroid.ResourceFinder﹕ Well-known service detection failed, trying initial context path https://ssl.webpack.de/dav.myserver.tld/cal.php/calendars/myuser/default 06-28 13:50:56.133 14736-14740/at.bitfire.davdroid:sync D/dalvikvm﹕ GC_CONCURRENT freed 1254K, 17% free 6674K/7996K, paused 8ms+21ms, total 340ms 06-28 13:50:56.244 14736-17292/at.bitfire.davdroid:sync V/davdroid.URIUtils﹕ Normalized URL /cal.php/calendars/myuser/default/ -> /cal.php/calendars/myuser/default/ 06-28 13:50:56.254 14736-17292/at.bitfire.davdroid:sync D/davdroid.WebDavResource﹕ Processing multi-status element: https://ssl.webpack.de/cal.php/calendars/myuser/default/ 06-28 13:50:56.274 14736-17292/at.bitfire.davdroid:sync D/davdroid.URIUtils﹕ Appended trailing slash to collection https://ssl.webpack.de/dav.myserver.tld/cal.php/calendars/myuser/default -> https://ssl.webpack.de/dav.myserver.tld/cal.php/calendars/myuser/default/ 06-28 13:50:56.274 14736-17292/at.bitfire.davdroid:sync I/davdroid.ResourceFinder﹕ Couldn't find current-user-principal for service caldav, assuming initial context path is principal path 06-28 13:50:59.184 14736-17292/at.bitfire.davdroid:sync V/davdroid.URIUtils﹕ Normalized URL /cal.php/calendars/myuser/default/ -> /cal.php/calendars/myuser/default/ 06-28 13:50:59.193 14736-17292/at.bitfire.davdroid:sync D/davdroid.WebDavResource﹕ Processing multi-status element: https://ssl.webpack.de/cal.php/calendars/myuser/default/ 06-28 13:50:59.214 14736-17292/at.bitfire.davdroid:sync D/davdroid.URIUtils﹕ Appended trailing slash to collection https://ssl.webpack.de/dav.myserver.tld/cal.php/calendars/myuser/default -> https://ssl.webpack.de/dav.myserver.tld/cal.php/calendars/myuser/default/ 06-28 13:50:59.284 14736-17292/at.bitfire.davdroid:sync E/davdroid.ServerInfoLoader﹕ DAV error while querying server info at.bitfire.davdroid.webdav.DavIncapableException: Invalid DAV response: No CalDAV-/CardDAV service is available at this location. at at.bitfire.davdroid.resource.DavResourceFinder.findResources(DavResourceFinder.java:178) at at.bitfire.davdroid.ui.setup.QueryServerDialogFragment$ServerInfoLoader.loadInBackground(QueryServerDialogFragment.java:117) at at.bitfire.davdroid.ui.setup.QueryServerDialogFragment$ServerInfoLoader.loadInBackground(QueryServerDialogFragment.java:95) at android.content.AsyncTaskLoader.onLoadInBackground(AsyncTaskLoader.java:301) at android.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:68) at android.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:56) at android.os.AsyncTask$2.call(AsyncTask.java:287) at java.util.concurrent.FutureTask.run(FutureTask.java:234) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) at java.lang.Thread.run(Thread.java:856)
Debug log for success (HTTP):
06-28 13:53:37.683 14736-14736/at.bitfire.davdroid:sync W/EGL_emulation﹕ eglSurfaceAttrib not implemented 06-28 13:53:39.413 14736-14736/at.bitfire.davdroid:sync W/EGL_emulation﹕ eglSurfaceAttrib not implemented 06-28 13:53:40.094 14736-14736/at.bitfire.davdroid:sync W/EGL_emulation﹕ eglSurfaceAttrib not implemented 06-28 13:53:43.563 14736-14736/at.bitfire.davdroid:sync I/davdroid.QueryServer﹕ onCreateLoader 06-28 13:53:43.653 14736-18275/at.bitfire.davdroid:sync I/davdroid.ResourceFinder﹕ *** Starting CardDAV resource detection 06-28 13:53:43.683 14736-14736/at.bitfire.davdroid:sync W/EGL_emulation﹕ eglSurfaceAttrib not implemented 06-28 13:53:43.733 14736-18275/at.bitfire.davdroid:sync D/davdroid.ResourceFinder﹕ Looking up SRV records for _carddavs._tcp.dav.myserver.tld 06-28 13:53:43.793 14736-18275/at.bitfire.davdroid:sync I/davdroid.ResourceFinder﹕ Looking up principal URL for service carddav; initial context: http://dav.myserver.tld/cal.php/calendars/myuser/default 06-28 13:53:43.943 14736-18275/at.bitfire.davdroid:sync V/davdroid.URIUtils﹕ Normalized URL /.well-known/carddav -> /.well-known/carddav 06-28 13:53:45.104 14736-14740/at.bitfire.davdroid:sync D/dalvikvm﹕ GC_CONCURRENT freed 1290K, 17% free 6700K/8056K, paused 12ms+34ms, total 367ms 06-28 13:53:45.523 14736-18275/at.bitfire.davdroid:sync D/davdroid.ResourceFinder﹕ Well-known carddav service detection failed with HTTP error at.bitfire.davdroid.webdav.HttpException: 405 Method Not Allowed at at.bitfire.davdroid.webdav.WebDavResource.checkResponse(WebDavResource.java:430) at at.bitfire.davdroid.webdav.WebDavResource.checkResponse(WebDavResource.java:404) at at.bitfire.davdroid.webdav.WebDavResource.propfind(WebDavResource.java:285) at at.bitfire.davdroid.resource.DavResourceFinder.getCurrentUserPrincipal(DavResourceFinder.java:278) at at.bitfire.davdroid.resource.DavResourceFinder.findResources(DavResourceFinder.java:61) at at.bitfire.davdroid.ui.setup.QueryServerDialogFragment$ServerInfoLoader.loadInBackground(QueryServerDialogFragment.java:117) at at.bitfire.davdroid.ui.setup.QueryServerDialogFragment$ServerInfoLoader.loadInBackground(QueryServerDialogFragment.java:95) at android.content.AsyncTaskLoader.onLoadInBackground(AsyncTaskLoader.java:301) at android.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:68) at android.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:56) at android.os.AsyncTask$2.call(AsyncTask.java:287) at java.util.concurrent.FutureTask.run(FutureTask.java:234) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) at java.lang.Thread.run(Thread.java:856) 06-28 13:53:45.523 14736-18275/at.bitfire.davdroid:sync D/davdroid.ResourceFinder﹕ Well-known service detection failed, trying initial context path http://dav.myserver.tld/cal.php/calendars/myuser/default 06-28 13:53:48.523 14736-18275/at.bitfire.davdroid:sync V/davdroid.URIUtils﹕ Normalized URL /cal.php/calendars/myuser/default/ -> /cal.php/calendars/myuser/default/ 06-28 13:53:48.523 14736-18275/at.bitfire.davdroid:sync D/davdroid.WebDavResource﹕ Processing multi-status element: http://dav.myserver.tld/cal.php/calendars/myuser/default/ 06-28 13:53:48.563 14736-18275/at.bitfire.davdroid:sync D/davdroid.URIUtils﹕ Appended trailing slash to collection http://dav.myserver.tld/cal.php/calendars/myuser/default -> http://dav.myserver.tld/cal.php/calendars/myuser/default/ 06-28 13:53:48.603 14736-18275/at.bitfire.davdroid:sync V/davdroid.URIUtils﹕ Normalized URL /cal.php/principals/myuser/ -> /cal.php/principals/myuser/ 06-28 13:53:48.623 14736-18275/at.bitfire.davdroid:sync V/davdroid.URIUtils﹕ Normalized URL /cal.php/principals/myuser/ -> /cal.php/principals/myuser/ 06-28 13:53:48.623 14736-18275/at.bitfire.davdroid:sync I/davdroid.ResourceFinder﹕ Principal URL found from initial context path: /cal.php/principals/myuser/ 06-28 13:53:51.063 14736-14740/at.bitfire.davdroid:sync D/dalvikvm﹕ GC_CONCURRENT freed 1348K, 18% free 6680K/8096K, paused 7ms+18ms, total 332ms 06-28 13:53:52.034 14736-18275/at.bitfire.davdroid:sync V/davdroid.URIUtils﹕ Normalized URL /cal.php/principals/myuser/ -> /cal.php/principals/myuser/ 06-28 13:53:52.044 14736-18275/at.bitfire.davdroid:sync D/davdroid.WebDavResource﹕ Processing multi-status element: http://dav.myserver.tld/cal.php/principals/myuser/ 06-28 13:53:52.064 14736-18275/at.bitfire.davdroid:sync I/davdroid.ResourceFinder﹕ *** Starting CalDAV resource detection 06-28 13:53:52.064 14736-18275/at.bitfire.davdroid:sync D/davdroid.ResourceFinder﹕ Looking up SRV records for _caldavs._tcp.dav.myserver.tld 06-28 13:53:52.094 14736-18275/at.bitfire.davdroid:sync I/davdroid.ResourceFinder﹕ Looking up principal URL for service caldav; initial context: http://dav.myserver.tld/cal.php/calendars/myuser/default 06-28 13:53:52.134 14736-18275/at.bitfire.davdroid:sync V/davdroid.URIUtils﹕ Normalized URL /.well-known/caldav -> /.well-known/caldav 06-28 13:53:53.294 14736-18275/at.bitfire.davdroid:sync D/davdroid.ResourceFinder﹕ Well-known caldav service detection failed with HTTP error at.bitfire.davdroid.webdav.HttpException: 405 Method Not Allowed at at.bitfire.davdroid.webdav.WebDavResource.checkResponse(WebDavResource.java:430) at at.bitfire.davdroid.webdav.WebDavResource.checkResponse(WebDavResource.java:404) at at.bitfire.davdroid.webdav.WebDavResource.propfind(WebDavResource.java:285) at at.bitfire.davdroid.resource.DavResourceFinder.getCurrentUserPrincipal(DavResourceFinder.java:278) at at.bitfire.davdroid.resource.DavResourceFinder.findResources(DavResourceFinder.java:108) at at.bitfire.davdroid.ui.setup.QueryServerDialogFragment$ServerInfoLoader.loadInBackground(QueryServerDialogFragment.java:117) at at.bitfire.davdroid.ui.setup.QueryServerDialogFragment$ServerInfoLoader.loadInBackground(QueryServerDialogFragment.java:95) at android.content.AsyncTaskLoader.onLoadInBackground(AsyncTaskLoader.java:301) at android.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:68) at android.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:56) at android.os.AsyncTask$2.call(AsyncTask.java:287) at java.util.concurrent.FutureTask.run(FutureTask.java:234) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) at java.lang.Thread.run(Thread.java:856) 06-28 13:53:53.304 14736-18275/at.bitfire.davdroid:sync D/davdroid.ResourceFinder﹕ Well-known service detection failed, trying initial context path http://dav.myserver.tld/cal.php/calendars/myuser/default 06-28 13:53:56.144 14736-18275/at.bitfire.davdroid:sync V/davdroid.URIUtils﹕ Normalized URL /cal.php/calendars/myuser/default/ -> /cal.php/calendars/myuser/default/ 06-28 13:53:56.144 14736-18275/at.bitfire.davdroid:sync D/davdroid.WebDavResource﹕ Processing multi-status element: http://dav.myserver.tld/cal.php/calendars/myuser/default/ 06-28 13:53:56.184 14736-18275/at.bitfire.davdroid:sync D/davdroid.URIUtils﹕ Appended trailing slash to collection http://dav.myserver.tld/cal.php/calendars/myuser/default -> http://dav.myserver.tld/cal.php/calendars/myuser/default/ 06-28 13:53:56.194 14736-18275/at.bitfire.davdroid:sync V/davdroid.URIUtils﹕ Normalized URL /cal.php/principals/myuser/ -> /cal.php/principals/myuser/ 06-28 13:53:56.224 14736-18275/at.bitfire.davdroid:sync V/davdroid.URIUtils﹕ Normalized URL /cal.php/principals/myuser/ -> /cal.php/principals/myuser/ 06-28 13:53:56.234 14736-18275/at.bitfire.davdroid:sync I/davdroid.ResourceFinder﹕ Principal URL found from initial context path: /cal.php/principals/myuser/ 06-28 13:53:56.773 14736-14740/at.bitfire.davdroid:sync D/dalvikvm﹕ GC_CONCURRENT freed 1341K, 18% free 6661K/8096K, paused 7ms+17ms, total 232ms 06-28 13:53:59.423 14736-18275/at.bitfire.davdroid:sync V/davdroid.URIUtils﹕ Normalized URL /cal.php/principals/myuser/ -> /cal.php/principals/myuser/ 06-28 13:53:59.423 14736-18275/at.bitfire.davdroid:sync D/davdroid.WebDavResource﹕ Processing multi-status element: http://dav.myserver.tld/cal.php/principals/myuser/ 06-28 13:53:59.453 14736-18275/at.bitfire.davdroid:sync V/davdroid.URIUtils﹕ Normalized URL /cal.php/calendars/myuser/ -> /cal.php/calendars/myuser/ 06-28 13:53:59.463 14736-18275/at.bitfire.davdroid:sync I/davdroid.ResourceFinder﹕ Found calendar home set: /cal.php/calendars/myuser/ 06-28 13:54:02.753 14736-14740/at.bitfire.davdroid:sync D/dalvikvm﹕ GC_CONCURRENT freed 1286K, 18% free 6690K/8072K, paused 6ms+19ms, total 322ms 06-28 13:54:06.034 14736-18275/at.bitfire.davdroid:sync V/davdroid.URIUtils﹕ Normalized URL /cal.php/calendars/myuser/ -> /cal.php/calendars/myuser/ 06-28 13:54:06.044 14736-18275/at.bitfire.davdroid:sync D/davdroid.WebDavResource﹕ Processing multi-status element: http://dav.myserver.tld/cal.php/calendars/myuser/ 06-28 13:54:06.094 14736-18275/at.bitfire.davdroid:sync V/davdroid.URIUtils﹕ Normalized URL /cal.php/calendars/myuser/default/ -> /cal.php/calendars/myuser/default/ 06-28 13:54:06.104 14736-18275/at.bitfire.davdroid:sync D/davdroid.WebDavResource﹕ Processing multi-status element: http://dav.myserver.tld/cal.php/calendars/myuser/default/ 06-28 13:54:06.164 14736-18275/at.bitfire.davdroid:sync V/davdroid.URIUtils﹕ Normalized URL /cal.php/calendars/myuser/outbox/ -> /cal.php/calendars/myuser/outbox/ 06-28 13:54:06.174 14736-18275/at.bitfire.davdroid:sync D/davdroid.WebDavResource﹕ Processing multi-status element: http://dav.myserver.tld/cal.php/calendars/myuser/outbox/ 06-28 13:54:06.204 14736-18275/at.bitfire.davdroid:sync I/davdroid.ResourceFinder﹕ Found calendar: /cal.php/calendars/myuser/default/ 06-28 13:54:06.224 14736-14736/at.bitfire.davdroid:sync E/ActivityThread﹕ Failed to find provider info for org.dmfs.tasks
I could provide a test account on my server if needed.
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This is a problem of Baïkal which doesn’t support/isn’t configured with the correct base path. See https://github.com/bitfireAT/davdroid/issues/223#issuecomment-43132214 for more information (or have a look into the Baïkal docs/community).