Bug in authorization handling: server refused the given info 10 times

Question

I am getting the following error when trying to connect to a server through httpclient via NTLM authentication.
"Bug in authorization handling: server refused the given info 10 times"
Any help to solve the issue will really appreciated.
LINK to NTLM authentication source code
http://www.luigidragone.com/networking/ntlm.html

Answer 1

Thank you for your replies. Allow me to clarify.
1) I can override initSession, but how do I trap a failed login without implementing my own custom basic authentication? And isn't this something which is (should?) be handled by the supplied oracle classes? I've attached my provider.xml below, the only code outside this I am using is my custom filter.
2) I am being prompted for a password not by the SSO server, but by netstorage (Basic Authentication prompt). I presume basic authentication uses cookies? There cookies aren't getting passed through correctly?
<provider class="oracle.portal.provider.v2.http.URLProviderDefinition">
<providerInstanceClass>oracle.portal.provider.v2.http.URLProviderInstance</providerInstanceClass>
<session>true</session>
<authentication class="oracle.portal.provider.v2.security.Authentication">
<authType>basic</authType>
</authentication>
<passAllUrlParams>false</passAllUrlParams>
<portlet class="oracle.portal.provider.v2.http.URLPortletDefinition">
<id>1</id>
<name>NetStorage</name>
<title>NetStorage</title>
<description>NetStorage</description>
<timeout>40</timeout>
<showEditToPublic>false</showEditToPublic>
<hasAbout>false</hasAbout>
<showEdit>false</showEdit>
<hasHelp>false</hasHelp>
<showEditDefault>false</showEditDefault>
<showDetails>false</showDetails>
<renderer class="oracle.portal.provider.v2.render.RenderManager">
     <showPage class="oracle.portal.provider.v2.render.http.URLRenderer">
          <contentType>text/html</contentType>
          <charSet>UTF-8</charSet>
          <pageUrl>https://domain/oneNet/netstorage/</pageUrl>
          <filter class="portal.netstorage.NetStorageFilter"></filter>
     </showPage>
     </renderer>
</portlet>
</provider>