author | William Roberts <williamr@symbian.org> |
Fri, 23 Jul 2010 16:09:54 +0100 | |
branch | GCC_SURGE |
changeset 47 | d7383dba13ba |
parent 0 | e4d67989cc36 |
permissions | -rw-r--r-- |
0
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/* ssl/dtls1.h */ |
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/* |
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* DTLS implementation written by Nagendra Modadugu |
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* (nagendra@cs.stanford.edu) for the OpenSSL project 2005. |
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*/ |
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/* ==================================================================== |
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* Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. All advertising materials mentioning features or use of this |
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* software must display the following acknowledgment: |
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* "This product includes software developed by the OpenSSL Project |
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
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* |
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
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* endorse or promote products derived from this software without |
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* prior written permission. For written permission, please contact |
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* openssl-core@OpenSSL.org. |
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* |
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* 5. Products derived from this software may not be called "OpenSSL" |
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* nor may "OpenSSL" appear in their names without prior written |
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* permission of the OpenSSL Project. |
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* |
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* 6. Redistributions of any form whatsoever must retain the following |
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* acknowledgment: |
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* "This product includes software developed by the OpenSSL Project |
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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* OF THE POSSIBILITY OF SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This product includes cryptographic software written by Eric Young |
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* (eay@cryptsoft.com). This product includes software written by Tim |
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* Hudson (tjh@cryptsoft.com). |
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* |
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*/ |
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#ifndef HEADER_DTLS1_H |
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#define HEADER_DTLS1_H |
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#include <openssl/buffer.h> |
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#include <openssl/pqueue.h> |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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#define DTLS1_VERSION 0xFEFF |
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#define DTLS1_BAD_VER 0x0100 |
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#define DTLS1_AD_MISSING_HANDSHAKE_MESSAGE 110 |
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/* lengths of messages */ |
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#define DTLS1_COOKIE_LENGTH 32 |
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#define DTLS1_RT_HEADER_LENGTH 13 |
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#define DTLS1_HM_HEADER_LENGTH 12 |
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#define DTLS1_HM_BAD_FRAGMENT -2 |
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#define DTLS1_HM_FRAGMENT_RETRY -3 |
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#define DTLS1_CCS_HEADER_LENGTH 1 |
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#define DTLS1_AL_HEADER_LENGTH 7 |
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typedef struct dtls1_bitmap_st |
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{ |
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PQ_64BIT map; |
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unsigned long length; /* sizeof the bitmap in bits */ |
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PQ_64BIT max_seq_num; /* max record number seen so far */ |
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} DTLS1_BITMAP; |
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struct hm_header_st |
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{ |
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unsigned char type; |
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unsigned long msg_len; |
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unsigned short seq; |
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unsigned long frag_off; |
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unsigned long frag_len; |
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unsigned int is_ccs; |
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}; |
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struct ccs_header_st |
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{ |
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unsigned char type; |
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unsigned short seq; |
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}; |
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struct dtls1_timeout_st |
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{ |
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/* Number of read timeouts so far */ |
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unsigned int read_timeouts; |
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|
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/* Number of write timeouts so far */ |
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unsigned int write_timeouts; |
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|
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/* Number of alerts received so far */ |
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unsigned int num_alerts; |
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}; |
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typedef struct record_pqueue_st |
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{ |
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unsigned short epoch; |
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pqueue q; |
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} record_pqueue; |
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typedef struct hm_fragment_st |
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{ |
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struct hm_header_st msg_header; |
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unsigned char *fragment; |
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} hm_fragment; |
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typedef struct dtls1_state_st |
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{ |
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unsigned int send_cookie; |
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unsigned char cookie[DTLS1_COOKIE_LENGTH]; |
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unsigned char rcvd_cookie[DTLS1_COOKIE_LENGTH]; |
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unsigned int cookie_len; |
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|
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/* |
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* The current data and handshake epoch. This is initially |
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* undefined, and starts at zero once the initial handshake is |
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* completed |
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*/ |
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unsigned short r_epoch; |
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unsigned short w_epoch; |
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|
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/* records being received in the current epoch */ |
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DTLS1_BITMAP bitmap; |
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|
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/* renegotiation starts a new set of sequence numbers */ |
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DTLS1_BITMAP next_bitmap; |
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|
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/* handshake message numbers */ |
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unsigned short handshake_write_seq; |
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unsigned short next_handshake_write_seq; |
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|
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unsigned short handshake_read_seq; |
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|
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/* Received handshake records (processed and unprocessed) */ |
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record_pqueue unprocessed_rcds; |
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record_pqueue processed_rcds; |
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|
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/* Buffered handshake messages */ |
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pqueue buffered_messages; |
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|
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/* Buffered (sent) handshake records */ |
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pqueue sent_messages; |
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|
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unsigned int mtu; /* max wire packet size */ |
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|
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struct hm_header_st w_msg_hdr; |
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struct hm_header_st r_msg_hdr; |
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|
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struct dtls1_timeout_st timeout; |
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|
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/* storage for Alert/Handshake protocol data received but not |
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* yet processed by ssl3_read_bytes: */ |
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unsigned char alert_fragment[DTLS1_AL_HEADER_LENGTH]; |
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unsigned int alert_fragment_len; |
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unsigned char handshake_fragment[DTLS1_HM_HEADER_LENGTH]; |
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unsigned int handshake_fragment_len; |
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|
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unsigned int retransmitting; |
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|
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} DTLS1_STATE; |
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|
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typedef struct dtls1_record_data_st |
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{ |
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unsigned char *packet; |
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unsigned int packet_length; |
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SSL3_BUFFER rbuf; |
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SSL3_RECORD rrec; |
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} DTLS1_RECORD_DATA; |
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|
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|
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/* Timeout multipliers (timeout slice is defined in apps/timeouts.h */ |
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#define DTLS1_TMO_READ_COUNT 2 |
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#define DTLS1_TMO_WRITE_COUNT 2 |
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|
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#define DTLS1_TMO_ALERT_COUNT 12 |
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|
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#ifdef __cplusplus |
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} |
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#endif |
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#endif |
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