title: How to provoke a client certificate request usning Schannel
body: <p>I am writing TLS server side code using schannel and need to require the client to mutually authenticate itself.  I know this is done by sending a client certificate request at the end of the server hello.  I see how to do it in openssl but I can not find how to do it with schannel.</p>
  <p>EDIT.</p>
  <p>The short answer is to use ASC_RET_MUTUAL_AUTH.</p>