/* * DTLS implementation written by Nagendra Modadugu * ([email protected]) 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 * [email protected]. * * 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 * ([email protected]). This product includes software written by Tim * Hudson ([email protected]). */ #include <openssl/ssl.h> #include <assert.h> #include <limits.h> #include <string.h> #include <openssl/err.h> #include <openssl/mem.h> #include <openssl/nid.h> #include "../crypto/internal.h" #include "internal.h" BSSL_NAMESPACE_BEGIN // DTLS1_MTU_TIMEOUTS is the maximum number of timeouts to expire // before starting to decrease the MTU. #define DTLS1_MTU_TIMEOUTS … // DTLS1_MAX_TIMEOUTS is the maximum number of timeouts to expire // before failing the DTLS handshake. #define DTLS1_MAX_TIMEOUTS … DTLS1_STATE::DTLS1_STATE() : … { … } DTLS1_STATE::~DTLS1_STATE() { … } bool dtls1_new(SSL *ssl) { … } void dtls1_free(SSL *ssl) { … } void dtls1_start_timer(SSL *ssl) { … } bool dtls1_is_timer_expired(SSL *ssl) { … } static void dtls1_double_timeout(SSL *ssl) { … } void dtls1_stop_timer(SSL *ssl) { … } bool dtls1_check_timeout_num(SSL *ssl) { … } BSSL_NAMESPACE_END usingnamespacebssl; void DTLSv1_set_initial_timeout_duration(SSL *ssl, unsigned int duration_ms) { … } int DTLSv1_get_timeout(const SSL *ssl, struct timeval *out) { … } int DTLSv1_handle_timeout(SSL *ssl) { … }
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