Java 6 HttpURLConnection SPNEGO support

Question

I am trying to access a protected resource from a server that is setup for SPNEGO authentication.
On the client side I am logged on to the same domain and did all the required setup (at least I think so)
for getting the identity and tickets from the Windows cache.
When I access the resource from Internet Explorer everything works fine but when I try to access it
from Java 6 HttpURLConnection I still get HTTP 401 error although Java 6 HttpURLConnection should support SPNEGO.
If I attach by myself the "Negotiate..." header with the token that I build by myself I get the resource and HTTP 200
although I receive also a Negotiate header with a token of type 96 that I cannot pass it to initSecContext as stated
in SPNEGO RFC that I should do.
I have two questions:
1. What should I do in order to use the built in SPNEGO support in Java 6 for HttpURLConnection when working
with tickets from Windows cache ?
2. What could be the reason that I receive on the last authentication leg on HTTP 200 a token that is not of type
context but application (value = 96) and cannot be used for fininshing the security context establishment ?
Thanks.

Answer 1

See Rhino.
This is essentially the scripting engine that's incorporated in Java SE 6.0.
You can ofcourse download it and use it with Java 5.0 or earlier versions.
See also JSR 223.