1/*
2 * Copyright 2005-2018 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#ifndef HEADER_DTLS1_H
11# define HEADER_DTLS1_H
12
13#ifdef __cplusplus
14extern "C" {
15#endif
16
17# define DTLS1_VERSION 0xFEFF
18# define DTLS1_2_VERSION 0xFEFD
19# define DTLS_MIN_VERSION DTLS1_VERSION
20# define DTLS_MAX_VERSION DTLS1_2_VERSION
21# define DTLS1_VERSION_MAJOR 0xFE
22
23# define DTLS1_BAD_VER 0x0100
24
25/* Special value for method supporting multiple versions */
26# define DTLS_ANY_VERSION 0x1FFFF
27
28/* lengths of messages */
29/*
30 * Actually the max cookie length in DTLS is 255. But we can't change this now
31 * due to compatibility concerns.
32 */
33# define DTLS1_COOKIE_LENGTH 256
34
35# define DTLS1_RT_HEADER_LENGTH 13
36
37# define DTLS1_HM_HEADER_LENGTH 12
38
39# define DTLS1_HM_BAD_FRAGMENT -2
40# define DTLS1_HM_FRAGMENT_RETRY -3
41
42# define DTLS1_CCS_HEADER_LENGTH 1
43
44# define DTLS1_AL_HEADER_LENGTH 2
45
46/* Timeout multipliers (timeout slice is defined in apps/timeouts.h */
47# define DTLS1_TMO_READ_COUNT 2
48# define DTLS1_TMO_WRITE_COUNT 2
49
50# define DTLS1_TMO_ALERT_COUNT 12
51
52#ifdef __cplusplus
53}
54#endif
55#endif
56