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gnutls_supplemental_register(3) gnutls gnutls_supplemental_register(3) 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 (C) 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/local/share/doc/gnutls/ directory does not contain the HTML form visit https://www.gnutls.org/manual/