[jcifs] Problems with NtlmServlet and post method

[eglass1 at comcast.net]

> So, NtlmLogon servlet are called only if username is NULL. 
> Ntlm logon forwards calls to reply address. 
> This works well if I don't send any parameters or 
> parameters are send with get method. --> 
>  out.print( "INFO are following: " request.getParameter("INFO"));
> printing the info.
> 
> But if post method are used --> printin NULL.
> 
> Somehow all post information is lost somewhere.
> 
> Everything is working well with NtlmHttpFilter, but I can't use it cause 
> the production environment support servlet 2.2
> 

After negotiating NTLM authentication with a server, the client will force
a renegotiation before sending POST data.  It will first send an empty request
with the type 1 message in the Authorization header; the server will send a
401 with the type 2 challenge, and the client will finally reply with a type 3
response.  This last request will contain the POST parameters.

In a Servlet 2.2 environment, any servlets that will be receiving POST
parameters will probably have to extend NtlmHttpServlet in order to properly
handle the renegotiation.

Eric