Colin Evans wrote:
> When a RequestDispatcher.include() is done, *no* return headers are set at
> all, except for "Content-Type". It doesn't matter where the headers are
> set. This includes return headers that the Tomcat container is supposed to
> set automatically for all servlet requests, such as "Content-Length" and
> "Servlet-Engine" headers and any HTTP session cookies.
Where are you trying to set the headers? As I pointed out from the spec, an
included servlet is not allowed to set them -- only the outermost calling
servlet can do so.
>
> RequestDispatcher.forward() seems to function correctly. My guess is that
> Tomcat is supposed to delete any return headers set during an include and
> not touch headers set by the dispatching servlet, and instead it is deleting
> all of the return headers set during the request, including headers that
> should be returned as per the spec.
There was a bug in 3.1 that caused headers set before a forward call to be
thrown away, but that's been fixed in 3.2. A forwarded-to servlet is allowed to
set headers, but not an included servlet.
>
> I hope this helps; let me know if you need more explanations.
>
> -Colin
>
Craig
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