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André,

On 12/9/2010 1:50 PM, André Warnier wrote:
> Assume that the upload URL in question is handled by an application
> requiring HTTPS.
> And assume that the web application requires some form of user
> authentication.

Ok.

> Are you telling me that if a user connects for the first time to the
> site using this "upload URL", Tomcat is going to read the entire POST
> request prior to checking if this user is authenticated ?

It might not even need to be an upload URL.

If the authenticator rejects the request, or even if the application
rejects the request for some reason, I believe there's a loop in the
Tomcat code before shutting everything down that looks something like this:

while(in.read())
  ;

That means that you can hold-up a thread as long as you can keep sending
data. I'm not sure what happens if the servlet explicitly closes the
input stream... clearly Tomcat can't drain it once it's closed.

I may be wrong -- this used to be the behavior; it may have changed
since then.

- -chris
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