[jcifs] java.lang.NullPointerException at jcifs.UniAddress.lookupServerOr Workgroup

[Rooij, Bas van]

Hello,

I'm getting the following error when using the NtlmHttpFilter (jcifs v
0.7.3) with Tomcat 4.1.12 on linux (Red Hat 8.0) and XP client desktops with
IE 6 SP1.
java.lang.NullPointerException
	at jcifs.UniAddress.lookupServerOrWorkgroup(UniAddress.java:184)
	at jcifs.UniAddress.getByName(UniAddress.java:258)
	at jcifs.http.NtlmHttpFilter.doFilter(NtlmHttpFilter.java:87)
	at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:213)
	at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:193)
This does work on the xp client environment where I developed the web
application. I have not much knowledge of networking technologie and
authetication protocols, so I just implemented this api according to the
documentation and it worked fine localy. But then I migrated it to our linux
test environment and I got this error (after we changed the resolving of the
local hostname by deleting 'nano').
The web.xml has the folowing specified:
<filter>
    <filter-name>NTLM HTTP Authentication Filter</filter-name>
    <filter-class>jcifs.http.NtlmHttpFilter</filter-class>
    <init-param>
      <param-name>jcifs.netbios.wins</param-name>
      <param-value>**.***.**.***</param-value>
    </init-param>
    <init-param>
      <param-name>jcifs.smb.client.domain</param-name>
      <param-value>EUROPE</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>NTLM HTTP Authentication Filter</filter-name>
    <url-pattern>*.do</url-pattern>
  </filter-mapping>

Can anyone tell what to do???????? My guess is that there is still something
not right in the way the linux server is configured or that I need to set
some other jcifs props.
Thanks!

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