The content length is not computed and stored correctly when uploading content
using WebDAV Client API (WebdavResource). This problem occurs when using
InputStream as an argument to putMethod of WebdavResource. It does not occurs
when using File as an argument type. 
See this thread for discussion on this bug:
http://www.mail-archive.com/slide-user@jakarta.apache.org/msg06773.html

This bug is critical since the content uploaded by this method goes through fine
without any errors. But the problem surfaces when someone makes a copy of this
resource. The copy is not created correctly and worse still no error is thrown
on copy method. The error is thrown when someone tries to version control the
copied resource.

Using byte array to upload resources is not an acceptable workaround due to
memory constraints.