The stateless nature of http means it is pretty difficult to affect
one request by issuing another. There is no natural way for the server
to associate the two requests. They will have different instances of
the same page class. so there is no built in mechanism to do this.
You could store a flag
If you are using an upload component the same way as shown on
http://tapestry.apache.org/tapestry4.1/components/form/upload.html in the
examples section, is it possible to have the form's cancel button stop the
upload process? I have tried using a Submit component of type cancel but the
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