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/*
* Copyright (C) 2011-2012 Free Software Foundation, Inc.
*
* Author: Nikos Mavrogiannopoulos
*
* This file is part of GnuTLS.
*
* The GnuTLS is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>
*
*/
/* This file contains the types and prototypes for the X.509
* certificate and CRL handling functions.
*/
#ifndef GNUTLS_DTLS_H
#define GNUTLS_DTLS_H
#include <gnutls/gnutls.h>
/* *INDENT-OFF* */
#ifdef __cplusplus
extern "C" {
#endif
/* *INDENT-ON* */
#define GNUTLS_COOKIE_KEY_SIZE 16
void gnutls_dtls_set_timeouts(gnutls_session_t session,
unsigned int retrans_timeout,
unsigned int total_timeout);
unsigned int gnutls_dtls_get_mtu(gnutls_session_t session);
unsigned int gnutls_dtls_get_data_mtu(gnutls_session_t session);
void gnutls_dtls_set_mtu(gnutls_session_t session, unsigned int mtu);
int gnutls_dtls_set_data_mtu(gnutls_session_t session, unsigned int mtu);
unsigned int gnutls_dtls_get_timeout(gnutls_session_t session);
/**
* gnutls_dtls_prestate_st:
* @record_seq: record sequence number
* @hsk_read_seq: handshake read sequence number
* @hsk_write_seq: handshake write sequence number
*
* DTLS cookie prestate struct. This is usually never modified by
* the application, it is used to carry the cookie data between
* gnutls_dtls_cookie_send(), gnutls_dtls_cookie_verify() and
* gnutls_dtls_prestate_set().
*/
typedef struct {
unsigned int record_seq;
unsigned int hsk_read_seq;
unsigned int hsk_write_seq;
} gnutls_dtls_prestate_st;
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);
int gnutls_dtls_cookie_verify(gnutls_datum_t * key,
void *client_data,
size_t client_data_size, void *_msg,
size_t msg_size,
gnutls_dtls_prestate_st * prestate);
void gnutls_dtls_prestate_set(gnutls_session_t session,
gnutls_dtls_prestate_st * prestate);
unsigned int gnutls_record_get_discarded(gnutls_session_t session);
/* *INDENT-OFF* */
#ifdef __cplusplus
}
#endif
/* *INDENT-ON* */
#endif /* GNUTLS_DTLS_H */
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