The C and C++ Include Header Files

/usr/include/openssl/dtls1.h


$ cat -n /usr/include/openssl/dtls1.h

     1	/*
     2	 * Copyright 2005-2021 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 OPENSSL_DTLS1_H
    11	# define OPENSSL_DTLS1_H
    12	# pragma once
    13	
    14	# include <openssl/macros.h>
    15	# ifndef OPENSSL_NO_DEPRECATED_3_0
    16	#  define HEADER_DTLS1_H
    17	# endif
    18	
    19	# include <openssl/prov_ssl.h>
    20	
    21	#ifdef  __cplusplus
    22	extern "C" {
    23	#endif
    24	
    25	#include <openssl/opensslconf.h>
    26	
    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
    31	# endif
    32	# define DTLS1_VERSION_MAJOR             0xFE
    33	
    34	/* Special value for method supporting multiple versions */
    35	# define DTLS_ANY_VERSION                0x1FFFF
    36	
    37	/* lengths of messages */
    38	
    39	# define DTLS1_COOKIE_LENGTH                     255
    40	
    41	# define DTLS1_RT_HEADER_LENGTH                  13
    42	
    43	# define DTLS1_HM_HEADER_LENGTH                  12
    44	
    45	# define DTLS1_HM_BAD_FRAGMENT                   -2
    46	# define DTLS1_HM_FRAGMENT_RETRY                 -3
    47	
    48	# define DTLS1_CCS_HEADER_LENGTH                  1
    49	
    50	# define DTLS1_AL_HEADER_LENGTH                   2
    51	
    52	# define DTLS1_TMO_ALERT_COUNT                     12
    53	
    54	#ifdef  __cplusplus
    55	}
    56	#endif
    57	#endif