Allow Servlet to Control "100-continue" response

[Rehtron]

Hi

Currently if a client supplies the "Expect: 100-continue" header on a POST
or PUT, Tomcat appears to send the response header ("100-continue") before
passing control to the servlet.

I need to use the servlet  to control this response and accept/reject the
request before receiving the request content, Is there anyone could give me
some advice?

Thanks.