/usr/include/openssl/dtls1.h is in libssl-dev 1.1.0j-1~deb9u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | /*
* Copyright 2005-2016 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#ifndef HEADER_DTLS1_H
# define HEADER_DTLS1_H
#ifdef __cplusplus
extern "C" {
#endif
# define DTLS1_VERSION 0xFEFF
# define DTLS1_2_VERSION 0xFEFD
# define DTLS_MIN_VERSION DTLS1_VERSION
# define DTLS_MAX_VERSION DTLS1_2_VERSION
# define DTLS1_VERSION_MAJOR 0xFE
# define DTLS1_BAD_VER 0x0100
/* Special value for method supporting multiple versions */
# define DTLS_ANY_VERSION 0x1FFFF
/* lengths of messages */
# define DTLS1_COOKIE_LENGTH 256
# define DTLS1_RT_HEADER_LENGTH 13
# define DTLS1_HM_HEADER_LENGTH 12
# define DTLS1_HM_BAD_FRAGMENT -2
# define DTLS1_HM_FRAGMENT_RETRY -3
# define DTLS1_CCS_HEADER_LENGTH 1
# ifdef DTLS1_AD_MISSING_HANDSHAKE_MESSAGE
# define DTLS1_AL_HEADER_LENGTH 7
# else
# define DTLS1_AL_HEADER_LENGTH 2
# endif
/* Timeout multipliers (timeout slice is defined in apps/timeouts.h */
# define DTLS1_TMO_READ_COUNT 2
# define DTLS1_TMO_WRITE_COUNT 2
# define DTLS1_TMO_ALERT_COUNT 12
#ifdef __cplusplus
}
#endif
#endif
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