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- 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/