HTTP headers in error pages

["Stephen Summerfield" <stephen@netality.com>]

I've a JSP error page in which I dynamically build a 'return' link using the
contents of the referer header.
This works fine with JRUN.
However with the JSERV1.1/GNUJsp1.0.1Pre1 combination I'm using, there
doesn't seem to be *any* HTTP headers available in the request object. I put
some test code in to print all the headers out (like SnoopServlet does) and
there were none.

Is this a known problem? Is it JSERV or GNUJsp at fault? Is it indeed a
fault?

Steve