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       gnutls_handshake_set_post_client_hello_function  -  set  callback to be
       called after the client hello is received


       #include <gnutls/gnutls.h>

       void   gnutls_handshake_set_post_client_hello_function(gnutls_session_t
       session, gnutls_handshake_post_client_hello_func func);


       gnutls_session_t session
                   is a gnutls_session_t structure.

       gnutls_handshake_post_client_hello_func func
                   is the function to be called


       This  function  will set a callback to be called after the client hello
       has been received (callback valid in server side only). This allows the
       server to adjust settings based on received extensions.

       Those  settings  could  be  ciphersuites,  requesting  certificate,  or
       anything else except for version negotiation (this is done  before  the
       hello message is parsed).

       This  callback  must  return  0  on  success  or a gnutls error code to
       terminate the handshake.


       You should not use this function to terminate the  handshake  based  on
       client  input  unless you know what you are doing. Before the handshake
       is finished there is no way to know if  there  is  a  man-in-the-middle
       attack being performed.


       Report    bugs    to    <>.     GnuTLS   home   page: General help  using  GNU  software:


       Copyright © 2008 Free Software Foundation.
       Copying  and  distribution  of this file, with or without modification,
       are permitted in any medium  without  royalty  provided  the  copyright
       notice and this notice are preserved.


       The  full  documentation  for gnutls is maintained as a Texinfo manual.
       If the info and gnutls programs are properly installed  at  your  site,
       the command

              info gnutls

       should give you access to the complete manual.

gnutls                      gnutls_handshake_set_post_client_hello_function(3)