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gnutls_dtls_cookie_send(3) gnutls gnutls_dtls_cookie_send(3)
gnutls_dtls_cookie_send - API function
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);
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)
The size of client's data
gnutls_dtls_prestate_st * prestate
The previous cookie returned by gnutls_dtls_cookie_verify()
A transport pointer to be used by push_func
A function that will be used to reply
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
the number of bytes sent, or a negative error code.
Report bugs to <firstname.lastname@example.org>.
Home page: https://www.gnutls.org
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.
The full documentation for gnutls is maintained as a Texinfo manual.
If the /usr/local/share/doc/gnutls/ directory does not contain the HTML
gnutls 3.7.7 gnutls_dtls_cookie_send(3)