mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-08-29 13:29:09 +00:00
81 lines
3.2 KiB
C
81 lines
3.2 KiB
C
/*
|
|
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
|
|
* 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. Neither the name of the Institute nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS 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 INSTITUTE OR 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 file is part of the Contiki operating system.
|
|
*/
|
|
|
|
/**
|
|
* \file
|
|
* CoAP module for reliable transport
|
|
* \author
|
|
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
|
|
*/
|
|
|
|
#ifndef COAP_TRANSACTIONS_H_
|
|
#define COAP_TRANSACTIONS_H_
|
|
|
|
#include "er-coap.h"
|
|
|
|
/*
|
|
* Modulo mask (thus +1) for a random number to get the tick number for the random
|
|
* retransmission time between COAP_RESPONSE_TIMEOUT and COAP_RESPONSE_TIMEOUT*COAP_RESPONSE_RANDOM_FACTOR.
|
|
*/
|
|
#define COAP_RESPONSE_TIMEOUT_TICKS (CLOCK_SECOND * COAP_RESPONSE_TIMEOUT)
|
|
#define COAP_RESPONSE_TIMEOUT_BACKOFF_MASK (long)((CLOCK_SECOND * COAP_RESPONSE_TIMEOUT * ((float)COAP_RESPONSE_RANDOM_FACTOR - 1.0)) + 0.5) + 1
|
|
|
|
/* container for transactions with message buffer and retransmission info */
|
|
typedef struct coap_transaction {
|
|
struct coap_transaction *next; /* for LIST */
|
|
|
|
uint16_t mid;
|
|
struct etimer retrans_timer;
|
|
uint8_t retrans_counter;
|
|
|
|
uip_ipaddr_t addr;
|
|
uint16_t port;
|
|
|
|
restful_response_handler callback;
|
|
void *callback_data;
|
|
|
|
uint16_t packet_len;
|
|
uint8_t packet[COAP_MAX_PACKET_SIZE + 1]; /* +1 for the terminating '\0' which will not be sent
|
|
* Use snprintf(buf, len+1, "", ...) to completely fill payload */
|
|
} coap_transaction_t;
|
|
|
|
void coap_register_as_transaction_handler();
|
|
|
|
coap_transaction_t *coap_new_transaction(uint16_t mid, uip_ipaddr_t *addr,
|
|
uint16_t port);
|
|
void coap_send_transaction(coap_transaction_t *t);
|
|
void coap_clear_transaction(coap_transaction_t *t);
|
|
coap_transaction_t *coap_get_transaction_by_mid(uint16_t mid);
|
|
|
|
void coap_check_transactions();
|
|
|
|
#endif /* COAP_TRANSACTIONS_H_ */
|