[jcifs] NtlmHttpFilter - no route to host exception

[Travaglini, Joseph]

Hello,

  I have been using the JCIFS NtlmHttpFilter for well over a year for
Integrated Windows Authentication, and it has been serving the purpose
quite well.

 

  In a particular application I am using, I have recently sometimes seen
a "NoRouteToHostException" (stack trace below).  A browser refresh
solves the issue, but I am seeing it several times a day for the past
few weeks, and haven't seen it in the past.  It's happening frequently
enough to enough users to be an annoyance.

 

  I have written the cause of this off as a network error (routing
and/or DNS), but I figured I'd bounce this off the group to see if
anything else might be going on.

 

  I'm using JCIFS 1.2.19 in this current scenario against Apache 2.2 and
Tomcat 6 with mod_jk...  

 

Here's the servlet config: - SERVER is an Active Directory array with 64
individual domain controllers behind it.

<filter>

            <filter-name>NtlmFilter</filter-name>

            <filter-class>jcifs.http.NtlmHttpFilter</filter-class>

        <init-param>

          <param-name>jcifs.http.domainController</param-name>

          <param-value>SERVER.fmr.com</param-value>

        </init-param>

        <init-param>

          <param-name>jcifs.resolveOrder</param-name>

          <param-value>DNS</param-value>

        </init-param>

    </filter>

 

And the stack dump:

*         Stack Trace: 

o    jcifs.smb.SmbTransport.connect(SmbTransport.java:292)

o    jcifs.smb.SmbSession.getChallenge(SmbSession.java:146)

o    jcifs.smb.SmbSession.getChallenge(SmbSession.java:140)

o    jcifs.http.NtlmHttpFilter.negotiate(NtlmHttpFilter.java:157)

o    jcifs.http.NtlmHttpFilter.doFilter(NtlmHttpFilter.java:114)

o
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tionFilterChain.java:235)

o
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erChain.java:206)

o
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv
e.java:233)

o
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv
e.java:175)

o
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java
:128)

o
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java
:102)

o
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.
java:109)

o
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:2
86)

o
org.apache.coyote.ajp.AjpAprProcessor.process(AjpAprProcessor.java:419)

o
org.apache.coyote.ajp.AjpAprProtocol$AjpConnectionHandler.process(AjpApr
Protocol.java:378)

o
org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1509)

o    java.lang.Thread.run(Thread.java:619)

*         jcifs.smb.SmbException jcifs.util.transport.TransportException
java.net.NoRouteToHostException: No route to host at
java.net.PlainSocketImpl.socketConnect(Native Method) at
java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333) at
java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195) at
java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182) at
java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366) at
java.net.Socket.connect(Socket.java:519) at
java.net.Socket.connect(Socket.java:469) at
java.net.Socket.<init>(Socket.java:366) at
java.net.Socket.<init>(Socket.java:180) at
jcifs.smb.SmbTransport.ssn139(SmbTransport.java:181) at
jcifs.smb.SmbTransport.negotiate(SmbTransport.java:240) at
jcifs.smb.SmbTransport.doConnect(SmbTransport.java:308) at
jcifs.util.transport.Transport.run(Transport.java:240) at
java.lang.Thread.run(Thread.java:619) at
jcifs.util.transport.Transport.run(Transport.java:256) at
java.lang.Thread.run(Thread.java:619) 

 

Any help is appreciated - even if it's confirmation that my hunch about
network errors are accurate.

 

Thanks

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