gnutls_session_ext_register(3) gnutls gnutls_session_ext_register(3)
NAME
gnutls_session_ext_register - API function
SYNOPSIS
#include <gnutls/gnutls.h>
gnutls_session_ext_register(3) session, const char *
name, int id, gnutls_ext_parse_type_t parse_type, gnutls_ext_recv_func
recv_func, gnutls_ext_send_func send_func, gnutls_ext_deinit_data_func
deinit_func, gnutls_ext_pack_func pack_func, gnutls_ext_unpack_func
unpack_func, unsigned flags);
ARGUMENTS
gnutls_session_t session
the session for which this extension will be set
const char * name
the name of the extension to register
int id the numeric id of the extension
gnutls_ext_parse_type_t parse_type
the parse type of the extension (see
gnutls_ext_parse_type_t)
gnutls_ext_recv_func recv_func
a function to receive the data
gnutls_ext_send_func send_func
a function to send the data
gnutls_ext_deinit_data_func deinit_func
a function deinitialize any private data
gnutls_ext_pack_func pack_func
a function which serializes the extension's private data
(used on session packing for resumption)
gnutls_ext_unpack_func unpack_func
a function which will deserialize the extension's private
data
unsigned flags
must be zero or flags from gnutls_ext_flags_t
DESCRIPTION
This function will register a new extension type. The extension will be
only usable within the registered session. If the extension type is
already registered then GNUTLS_E_ALREADY_REGISTERED will be returned,
unless the flag GNUTLS_EXT_FLAG_OVERRIDE_INTERNAL is specified. The
latter flag when specified can be used to override certain extensions
introduced after 3.6.0. It is expected to be used by applications which
handle custom extensions that are not currently supported in GnuTLS,
but direct support for them may be added in the future.
Each registered extension can store temporary data into the gnutls_ses-
sion_t structure using gnutls_ext_set_data(), and they can be retrieved
using gnutls_ext_get_data().
The validity of the extension registered can be given by the appropri-
ate flags of gnutls_ext_flags_t. If no validity is given, then the reg-
istered extension will be valid for client and TLS1.2 server hello (or
encrypted extensions for TLS1.3).
RETURNS
GNUTLS_E_SUCCESS on success, otherwise a negative error code.
SINCE
3.5.5
REPORTING BUGS
Report bugs to <bugs@gnutls.org>.
Home page: http://www.gnutls.org
COPYRIGHT
Copyright (C) 2001-2018 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.
SEE ALSO
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
http://www.gnutls.org/manual/
gnutls 3.6.5 gnutls_session_ext_register(3)
gnutls 3.6.5 - Generated Mon Jan 21 18:00:40 CST 2019