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Leon,

Leon Rosenberg wrote:
> The last thing I can imagine is that the request somehow gets
> redirected or forwarded infinitely during processing, but is not
> leaving tomcat entirely and just reenters the processing, keeping the
> outer request object, where the mimeheader fields are stored. Is
> something like this possible?

Unlikely. Here's why:

1. A redirect would end the request, freeing all these objects.
   You'd probably also notice that many requests were being made.
   Also, most browsers give up after a certain number of redirects
   in a row.

2. Internal forwards (achieved by calling RequestDispatcher.forward)
   result in a deeper call stack. Thus, infinite forwards would likely
   result in a StackOverflowError.

My guess is that you have an infinite loop that might not look like a
loop (maybe the loop body is several screens long or whatever). What do
thread dumps look like for this thread? Presumably, this request has a
thread stuck to it which is actually executing code.

Chuck's suggestion to modify MimeHeaders.createHeader is a good one,
though hacking and recompiling Tomcat isn't my idea of a fun time.
Instead, I'd write a filter that wraps the response with a
HttpServletResponseWrapper whose setHeader/addHeader methods have been
overridden to spit out a timestamp and maybe even a stack trace. I think
you'll be able to find out some good information from that.

Good luck,
- -chris
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