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 */ 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