include/openssl/dtls1.h

   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
  14 extern "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