DavDroid socket is closed

dav_droid_socket_is_closed.txt

08-17 14:08:14.357    3926-4042/? I/HttpClient﹕ I/O exception (java.net.SocketException) caught when processing request to HttpRoute[{s}->https://ocshared-de18.owncube.com:2080]: Socket is closed
08-17 14:08:14.357    3926-4042/? I/HttpClient﹕ Retrying request to HttpRoute[{s}->https://ocshared-de18.owncube.com:2080]
08-17 14:12:45.102    3926-3926/? I/davdroid.QueryServer﹕ onCreateLoader
08-17 14:12:45.112    3926-4816/? I/davdroid.ResourceFinder﹕ *** Starting CardDAV resource detection
08-17 14:12:45.112    3926-4816/? D/davdroid.ResourceFinder﹕ Looking up SRV records for _carddavs._tcp.notmydomain.owncube.com
08-17 14:12:45.112    3926-4816/? D/davdroid.ResourceFinder﹕ Found carddavs service for ocshared-de18.owncube.com -> ocshared-de18.owncube.com:2080
08-17 14:12:45.112    3926-4816/? D/davdroid.ResourceFinder﹕ Found initial context path for carddav at ocshared-de18.owncube.com -> /
08-17 14:12:45.112    3926-4816/? I/davdroid.ResourceFinder﹕ Looking up principal URL for service carddav; initial context: https://ocshared-de18.owncube.com:2080/
08-17 14:12:45.112    3926-4816/? D/davdroid.WebDavResource﹕ Using preemptive authentication (not compatible with Digest auth)
08-17 14:13:05.252    3926-4816/? I/HttpClient﹕ I/O exception (java.net.SocketException) caught when processing request to HttpRoute[{s}->https://ocshared-de18.owncube.com:2080]: Socket is closed
08-17 14:13:05.252    3926-4816/? I/HttpClient﹕ Retrying request to HttpRoute[{s}->https://ocshared-de18.owncube.com:2080]
08-17 14:13:25.362    3926-4816/? I/HttpClient﹕ I/O exception (java.net.SocketException) caught when processing request to HttpRoute[{s}->https://ocshared-de18.owncube.com:2080]: Socket is closed
08-17 14:13:25.362    3926-4816/? I/HttpClient﹕ Retrying request to HttpRoute[{s}->https://ocshared-de18.owncube.com:2080]
08-17 14:13:45.462    3926-4816/? I/HttpClient﹕ I/O exception (java.net.SocketException) caught when processing request to HttpRoute[{s}->https://ocshared-de18.owncube.com:2080]: Socket is closed
08-17 14:13:45.462    3926-4816/? I/HttpClient﹕ Retrying request to HttpRoute[{s}->https://ocshared-de18.owncube.com:2080]
08-17 14:14:05.572    3926-4816/? E/davdroid.ResourceFinder﹕ Well-known carddav service detection failed with I/O error
08-17 14:14:05.572    3926-4816/? D/davdroid.ResourceFinder﹕ Well-known service detection failed, trying initial context path https://ocshared-de18.owncube.com:2080/