[jcifs] how to use preauthentication to get around "Access is denied" error?

[Brian Lee]

Hi,

I've got an application that gets file listings on shared Windows folders using 
JCIFS.  However, there is one particular server that is giving us grief.  It 
works 95% of the time but every so often, it'll start giving "Access is denied" 
messages for long stretches at a time (half hour plus).  But then miraculously, 
the error will clear and things will be working smoothly again.

I figured that the issue was due to the Windows Server 2003 domain controller 
issue.  We're attempting to authenticate several different users near 
simultaneously (the jobs are working from a timer); from my online research it 
appears that the solution is using preauthentication.  However, when I try to 
find out HOW to do preauthentication, the docs are pretty sparse.

What I tried is creating an instance of the NtlmPasswordAuthentication, passing 
in the user credentials and using the SmbFile constructor that takes that in as 
a parameter.  Unfortunately, we're still seeing the same error message pop up 
when I make the call to SmbFile.listFiles() so I must be doing it wrong.

Could somebody either explain to me the proper way of doing preauthentication or 
refer me to an example out there?  Or is the error message a symptom of a 
completely different problem?  Thanks!

Brian



      
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