gnutls_handshake_set_post_client_hello_function man page on FreeBSD
gnutls_handshake_set_post_client_hello_function - set callback to be
called after the client hello is received
session, gnutls_handshake_post_client_hello_func func);
is a gnutls_session_t structure.
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 any‐
thing 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 termi‐
nate 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 <email@example.com>. GnuTLS home page:
http://www.gnu.org/software/gnutls/ 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,
should give you access to the complete manual.
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