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 unpack_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   extension   type   is   already   registered   then
       GNUTLS_E_ALREADY_REGISTERED will be returned.

       Each  registered  extension  can  store  temporary  data  into  the  gnutls_session_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 © 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.

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

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

gnutls                                                3.8.9                               gnutls_ext_register(3)