gnutls_handshake_set_post_client_hello_function(3)		      gnutls			gnutls_handshake_set_post_client_hello_function(3)

NAME

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

SYNOPSIS

       #include <gnutls/gnutls.h>

       void gnutls_handshake_set_post_client_hello_function(gnutls_session_t session, gnutls_handshake_post_client_hello_func func);

ARGUMENTS

       gnutls_session_t session
		   is a gnutls_session_t structure.

       gnutls_handshake_post_client_hello_func func
		   is the function to be called

DESCRIPTION

       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.

WARNING

       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.

REPORTING BUGS

       Report  bugs  to  <bug-gnutls@gnu.org>.	 GnuTLS  home  page:  http://www.gnu.org/software/gnutls/  General  help   using   GNU	 software:
       http://www.gnu.org/gethelp/

COPYRIGHT

       Copyright (C) 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.

SEE ALSO

       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								       2.8.6			gnutls_handshake_set_post_client_hello_function(3)