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NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | WARNING | REPORTING BUGS | COPYRIGHT | SEE ALSO | COLOPHON |
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gnutls_handsh...hook_function(3) gnutls gnutls_handsh...hook_function(3)
gnutls_handshake_set_hook_function - API function
#include <gnutls/gnutls.h>
void gnutls_handshake_set_hook_function(gnutls_session_t session,
unsigned int htype, int when, gnutls_handshake_hook_func func);
gnutls_session_t session
is a gnutls_session_t type
unsigned int htype
the gnutls_handshake_description_t of the message to
hook at
int when GNUTLS_HOOK_* depending on when the hook function
should be called
gnutls_handshake_hook_func func
is the function to be called
This function will set a callback to be called after or before the
specified handshake message has been received or generated. This
is a generalization of
gnutls_handshake_set_post_client_hello_function().
To call the hook function prior to the message being generated or
processed use GNUTLS_HOOK_PRE as when parameter, GNUTLS_HOOK_POST
to call after, and GNUTLS_HOOK_BOTH for both cases.
This callback must return 0 on success or a gnutls error code to
terminate the handshake.
To hook at all handshake messages use an htype of
GNUTLS_HANDSHAKE_ANY.
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 protected]>.
Home page: https://www.gnutls.org
Copyright © 2001-2023 Free Software Foundation, Inc., and others.
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 /usr/share/doc/gnutls/ directory does not contain
the HTML form visit
https://www.gnutls.org/manual/
This page is part of the GnuTLS (GnuTLS Transport Layer Security
Library) project. Information about the project can be found at
⟨http://www.gnutls.org/⟩. If you have a bug report for this
manual page, send it to [email protected]. This page was obtained
from the tarball fetched from
⟨https://www.gnupg.org/ftp/gcrypt/gnutls/⟩ on 2025-08-11. If you
discover any rendering problems in this HTML version of the page,
or you believe there is a better or more up-to-date source for the
page, or you have corrections or improvements to the information
in this COLOPHON (which is not part of the original manual page),
send a mail to [email protected]
gnutls 3.8.10 gnutls_handsh...hook_function(3)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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