ssl/dtls1.h

/* ssl/dtls1.h */
/*
 * DTLS implementation written by Nagendra Modadugu
 * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
 */
/* ====================================================================
 * Copyright (c) 1999-2005 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    openssl-core@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */

#ifndef HEADER_DTLS1_H
# define HEADER_DTLS1_H

# include <openssl/buffer.h>
# include <openssl/pqueue.h>
# ifdef OPENSSL_SYS_VMS
#  include <resource.h>
#  include <sys/timeb.h>
# endif
# ifdef OPENSSL_SYS_WIN32
/* Needed for struct timeval */
#  include <winsock.h>
# elif defined(OPENSSL_SYS_NETWARE) && !defined(_WINSOCK2API_)
#  include <sys/timeval.h>
# else
#  if defined(OPENSSL_SYS_VXWORKS)
#   include <sys/times.h>
#  else
#   include <sys/time.h>
#  endif
# endif

#ifdef  __cplusplus
extern "C" {
#endif

# define DTLS1_VERSION                   0xFEFF
# define DTLS1_2_VERSION                 0xFEFD
# define DTLS_MAX_VERSION                DTLS1_2_VERSION

# 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