gnutls_dtls_cookie_send man page on Slackware
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gnutls_dtls_cookie_send(3) gnutls gnutls_dtls_cookie_send(3)
NAME
gnutls_dtls_cookie_send - API function
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);
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
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.
RETURNS
the number of bytes sent, or a negative error code.
SINCE
3.0
REPORTING BUGS
Report bugs to <bug-gnutls@gnu.org>.
General guidelines for reporting bugs: http://www.gnu.org/gethelp/
GnuTLS home page: http://www.gnu.org/software/gnutls/
COPYRIGHT
Copyright © 2012 Free Software Foundation, Inc..
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 info and gnutls programs are properly installed at your site,
the command
info gnutls
should give you access to the complete manual. As an alternative you
may obtain the manual from:
http://www.gnu.org/software/gnutls/manual/
gnutls 3.1.15 gnutls_dtls_cookie_send(3)
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