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gnutls_ext_register(3)		    gnutls		gnutls_ext_register(3)

NAME
       gnutls_ext_register - API function

SYNOPSIS
       #include	<gnutls/gnutls.h>

       int     gnutls_ext_register(const     char     *	   name,    int	   id,
       gnutls_ext_parse_type_t	parse_point,  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 un-
       pack_func);

ARGUMENTS
       const char * name
		   the name of the extension to	register

       int id	   the numeric TLS id of the extension

       gnutls_ext_parse_type_t parse_point
		   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

DESCRIPTION
       This  function  will  register a	new extension type. The	extension will
       remain registered until gnutls_global_deinit() is called. If the	exten-
       sion type is already registered then  GNUTLS_E_ALREADY_REGISTERED  will
       be returned.

       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().

       Any  extensions	registered with	this function are valid	for the	client
       and TLS1.2 server hello (or encrypted extensions	for TLS1.3).

       This function is	not thread safe.

RETURNS
       GNUTLS_E_SUCCESS	on success, otherwise a	negative error code.

SINCE
       3.4.0

REPORTING BUGS
       Report bugs to <bugs@gnutls.org>.
       Home page: https://www.gnutls.org

COPYRIGHT
       Copyright (C) 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 no-
       tice and	this notice are	preserved.

SEE ALSO
       The full	documentation for gnutls is maintained as  a  Texinfo  manual.
       If the /usr/local/share/doc/gnutls/ directory does not contain the HTML
       form visit

       https://www.gnutls.org/manual/

gnutls				    3.8.10		gnutls_ext_register(3)

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