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.