Функции API (API function)
Имя (Name)
gnutls_dtls_cookie_send - API function
Синопсис (Synopsis)
#include <gnutls/dtls.h>
int gnutls_dtls_cookie_send(gnutls_datum_t * key, void *
client_data, size_t client_data_size, gnutls_dtls_prestate_st *
prestate, gnutls_transport_ptr_t ptr, gnutls_push_func
push_func);
Аргументы (Arguments)
gnutls_datum_t * key
is a random key to be used at cookie generation
void * client_data
contains data identifying the client (i.e. address)
size_t client_data_size
The size of client's data
gnutls_dtls_prestate_st * prestate
The previous cookie returned by
gnutls_dtls_cookie_verify()
gnutls_transport_ptr_t ptr
A transport pointer to be used by push_func
gnutls_push_func push_func
A function that will be used to reply
Описание (Description)
This function can be used to prevent denial of service attacks to
a DTLS server by requiring the client to reply using a cookie
sent by this function. That way it can be ensured that a client
we allocated resources for (i.e. gnutls_session_t) is the one
that the original incoming packet was originated from.
This function must be called at the first incoming packet, prior
to allocating any resources and must be succeeded by
gnutls_dtls_cookie_verify().
Возвращаемое значение (Return value)
the number of bytes sent, or a negative error code.
Сообщение об ошибках (Reporting bugs)
Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org
Смотри также (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/
