include/openssl/dtls1.h

   1 /*
   2  * Copyright 2005-2018 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   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
   8  */
   9
  10 #ifndef HEADER_DTLS1_H
  11 # define HEADER_DTLS1_H
  12
  13 #ifdef  __cplusplus
  14 extern "C" {
  15 #endif
  16
  17 #include <openssl/opensslconf.h>
  18
  19 # define DTLS1_VERSION                   0xFEFF
  20 # define DTLS1_2_VERSION                 0xFEFD
  21 # if !OPENSSL_API_3
  22 #  define DTLS_MIN_VERSION                DTLS1_VERSION
  23 #  define DTLS_MAX_VERSION                DTLS1_2_VERSION
  24 # endif
  25 # define DTLS1_VERSION_MAJOR             0xFE
  26
  27 # define DTLS1_BAD_VER                   0x0100
  28
  29 /* Special value for method supporting multiple versions */
  30 # define DTLS_ANY_VERSION                0x1FFFF
  31
  32 /* lengths of messages */
  33 /*
  34  * Actually the max cookie length in DTLS is 255. But we can't change this now
  35  * due to compatibility concerns.
  36  */
  37 # define DTLS1_COOKIE_LENGTH                     256
  38
  39 # define DTLS1_RT_HEADER_LENGTH                  13
  40
  41 # define DTLS1_HM_HEADER_LENGTH                  12
  42
  43 # define DTLS1_HM_BAD_FRAGMENT                   -2
  44 # define DTLS1_HM_FRAGMENT_RETRY                 -3
  45
  46 # define DTLS1_CCS_HEADER_LENGTH                  1
  47
  48 # define DTLS1_AL_HEADER_LENGTH                   2
  49
  50 /* Timeout multipliers (timeout slice is defined in apps/timeouts.h */
  51 # define DTLS1_TMO_READ_COUNT                      2
  52 # define DTLS1_TMO_WRITE_COUNT                     2
  53
  54 # define DTLS1_TMO_ALERT_COUNT                     12
  55
  56 #ifdef  __cplusplus
  57 }
  58 #endif
  59 #endif