[jcifs] NtlmHttpFilter

[eglass1 at comcast.net]

This would appear to indicate that the underlying connection to the
authentication server is failing (i.e., the SMB server couldn't be contacted).
You might look at the domain controller/authentication server and see
if it is indeed failing, etc.

Eric
> Hi Everyone!
> I'm using the NtlmHttpFilter to authenticate Users accessing my webapp 
> via Tomcat, from time to time i get the following Exception:
> 
> jcifs.smb.SmbException: Connection timed out: connect
>     at jcifs.smb.SmbTransport.send(SmbTransport.java:727)
>     at jcifs.smb.SmbTransport.negotiate(SmbTransport.java:955)
>     at jcifs.smb.SmbSession.getChallenge(SmbSession.java:42)
>     at jcifs.http.NtlmHttpFilter.doFilter(NtlmHttpFilter.java:111)
>     at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilt
> erChain.java:213)
>     at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.
> java:193)
>     at 
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:2
> 56)
>     at 
> org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNex
> t(StandardPipeline.java:643)
>     at 
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
>     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
>     at 
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:1
> 91)
>     at 
> org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNex
> t(StandardPipeline.java:643)
>     at 
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
>     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
>     at 
> org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2415)
>     at 
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
>     at 
> org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNex
> t(StandardPipeline.java:643)
>     at 
> org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java
> :171)
>     at 
> org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNex
> t(StandardPipeline.java:641)
>     at 
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
>     at 
> org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNex
> t(StandardPipeline.java:641)
>     at 
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
>     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
>     at 
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174
> )
>     at 
> org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNex
> t(StandardPipeline.java:643)
>     at 
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
>     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
>     at 
> org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
>     at 
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:594)
>     at 
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnectio
> n(Http11Protocol.java:392)
>     at 
> org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)
>     at 
> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:61
> 9)
>     at java.lang.Thread.run(Thread.java:534)
> 
> Normally it works, but 2-3 times a day no authentication is possible, 
> and this Exception appears. What can i do about it?
> 
> Greetings
> Philipp Kirchner