In error page, how do I get original RequestURI

[Bragg, Casey]

For Tomcat 4 (actually b7, I'll upgrade shortly).

In an error page reached because an error occurred on a jsp page with the
following tag : 
<%@ page errorPage="/error.jsp" %>

How do I find the origial requestURI?

Currently, I'm getting "error.jsp" from request.getRequestURI() from the
error page;

Thanks!

...Casey