NAME

       gnutls_supplemental_register - API function

SYNOPSIS

       #include <gnutls/gnutls.h>

       int gnutls_supplemental_register(const char * name, gnutls_supplemental_data_format_type_t
       type, gnutls_supp_recv_func recv_func, gnutls_supp_send_func send_func);

ARGUMENTS

       const char * name
                   the name of the supplemental data to register

       gnutls_supplemental_data_format_type_t type
                   the type of the supplemental data format

       gnutls_supp_recv_func recv_func
                   the function to receive the data

       gnutls_supp_send_func send_func
                   the function to send the data

DESCRIPTION

       This function will register a new supplemental data type (rfc4680).  The  registered  data
       will  remain  until  gnutls_global_deinit()  is  called.  The  provided   type  must be an
       unassigned  type  in  gnutls_supplemental_data_format_type_t.  If  the  type  is   already
       registered or handled by GnuTLS internally GNUTLS_E_ALREADY_REGISTERED will be returned.

       This function is not thread safe. As supplemental data are not defined under TLS 1.3, this
       function will disable TLS 1.3 support globally.

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/