Hi all,
I have some troubles with BaseX request and webdav access. My situation is the following: the acces to BaseX with webdav is with an oXygen (developer version 17) with Ubuntu 14.0.4 and the BaseX server is running under a Scientific Linux 64b (2.6.32-573.3.1.el6.x86_64 ... if the precision is necessary ;)). The BaseX server is behind a web cluster using a load balancer and an APACHE HTTP server. All the access passing thrue this server and the different ports access are managed with HAProxy.
If the context is not clear enough, don't hesitate to ask more precisions.

The symptom is that the BaseX server is freezing after a webdav request. The log's extracts you can find below track the following use case:
  - I try an access to http://BaseX.huma-num.fr/webdav/bvm/bvm.xml with oXygen
  - I recieve a HTTP error 500
  - I try to access to the BaseX server with my web site and more than one minute later, I have a timeout.

... but the worst symptom is that in some cases (not always), the requested db get corrupted and emptied (totally or partly) : resources are missing or they throw End of File exceptions when we then try to reopen them.

This use case can appear many times a day... but not systematically. And other colleagues have the same problems with other version of oXygen with other OS (Windows), but allways with the same BaseX server.

Does anyone of you have an idea to solve my problem?

Thanks
Pierre-Yves

Some extracts of the log file:

...

17:13:06.694    X.X.X.X:34953    admin   REQUEST [GET] http://BaseX.huma-num.fr/webdav/bvm/bvm.xml
17:13:06.845    X.X.X.X:34954    admin   REQUEST [LOCK] http://BaseX.huma-num.fr/webdav/bvm/bvm.xml
17:13:06.888    X.X.X.X:34954    admin   200             43.82 ms
17:13:08.437    X.X.X.X:34953    admin   500     Unexpected error: Improper use? Potential bug? Your feedback is welcome: Contact: basex-talk@mailman.uni-konstanz.de Version: BaseX 8.2.1 Java: Oracle Corporation, 1.8.0_31 OS: Linux, amd64 Stack Trace: java.lang.RuntimeException: org.eclipse.jetty.io.EofException at org.basex.http.webdav.BXServletResponse.close(BXServletResponse.java:80) at org.basex.http.webdav.WebDAVServlet.run(WebDAVServlet.java:46) at org.basex.http.BaseXServlet.service(BaseXServlet.java:64) at javax.servlet.http.HttpServlet.service(HttpServlet.java:848) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:503) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557) at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextH... 1743.02 ms

...

17:15:20.041    X.X.X.X:38436    admin   REQUEST [PROPFIND] http://BaseX.huma-num.fr/webdav/skepsis/Cicero_De_Finibus.xml
17:15:40.067    X.X.X.X:38770    admin   REQUEST [PROPFIND] http://BaseX.huma-num.fr/webdav/skepsis/Cicero_De_Finibus.xml
17:16:00.078    X.X.X.X:39090    admin   REQUEST [PROPFIND] http://BaseX.huma-num.fr/webdav/skepsis/
17:16:00.170    X.X.X.X:39091    admin   REQUEST [PROPFIND] http://BaseX.huma-num.fr/webdav/bvm/bvm.xml
17:16:20.194    X.X.X.X:39582    admin   REQUEST [PROPFIND] http://BaseX.huma-num.fr/webdav/bvm/bvm.xml
17:17:00.904    X.X.X.X:39091    admin   200             60733.77 ms
17:17:00.907    X.X.X.X:39582    admin   200             40712.41 ms
17:17:00.909    X.X.X.X:38770    admin   200             80842.45 ms
17:17:00.910    X.X.X.X:38436    admin   200             100868.15 ms
17:17:01.004    X.X.X.X:39090    admin   200             60926.05 ms
17:19:37.189    Y.Y.Y.Y:39926    admin   ERROR   Timeout exceeded.       60000.62 ms

...