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)