2 * Copyright 2005-2020 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (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
10 #ifndef OPENSSL_DTLS1_H
11 # define OPENSSL_DTLS1_H
14 # include <openssl/macros.h>
15 # ifndef OPENSSL_NO_DEPRECATED_3_0
16 # define HEADER_DTLS1_H
19 # include <openssl/prov_ssl.h>
25 #include <openssl/opensslconf.h>
27 /* DTLS*_VERSION constants are defined in prov_ssl.h */
28 # ifndef OPENSSL_NO_DEPRECATED_3_0
29 # define DTLS_MIN_VERSION DTLS1_VERSION
30 # define DTLS_MAX_VERSION DTLS1_2_VERSION
32 # define DTLS1_VERSION_MAJOR 0xFE
34 /* Special value for method supporting multiple versions */
35 # define DTLS_ANY_VERSION 0x1FFFF
37 /* lengths of messages */
39 # define DTLS1_COOKIE_LENGTH 255
41 # define DTLS1_RT_HEADER_LENGTH 13
43 # define DTLS1_HM_HEADER_LENGTH 12
45 # define DTLS1_HM_BAD_FRAGMENT -2
46 # define DTLS1_HM_FRAGMENT_RETRY -3
48 # define DTLS1_CCS_HEADER_LENGTH 1
50 # define DTLS1_AL_HEADER_LENGTH 2
52 /* Timeout multipliers */
53 # define DTLS1_TMO_READ_COUNT 2
54 # define DTLS1_TMO_WRITE_COUNT 2
56 # define DTLS1_TMO_ALERT_COUNT 12