nes-proj/examples/coap/coap-example-client/coap-example-client.c

156 lines
4.8 KiB
C
Raw Normal View History

/*
* 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
* Erbium (Er) CoAP client example.
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "contiki.h"
#include "contiki-net.h"
#include "coap-engine.h"
2017-10-26 22:20:08 +00:00
#include "coap-blocking-api.h"
#if PLATFORM_SUPPORTS_BUTTON_HAL
#include "dev/button-hal.h"
#else
#include "dev/button-sensor.h"
#endif
/* Log configuration */
#include "coap-log.h"
#define LOG_MODULE "App"
#define LOG_LEVEL LOG_LEVEL_APP
/* FIXME: This server address is hard-coded for Cooja and link-local for unconnected border router. */
2017-10-26 22:20:08 +00:00
#define SERVER_EP "coap://[fe80::212:7402:0002:0202]"
#define TOGGLE_INTERVAL 10
PROCESS(er_example_client, "Erbium Example Client");
AUTOSTART_PROCESSES(&er_example_client);
static struct etimer et;
/* Example URIs that can be queried. */
#define NUMBER_OF_URLS 4
/* leading and ending slashes only for demo purposes, get cropped automatically when setting the Uri-Path */
char *service_urls[NUMBER_OF_URLS] =
{ ".well-known/core", "/actuators/toggle", "battery/", "error/in//path" };
#if PLATFORM_HAS_BUTTON
static int uri_switch = 0;
#endif
/* This function is will be passed to COAP_BLOCKING_REQUEST() to handle responses. */
void
client_chunk_handler(coap_message_t *response)
{
const uint8_t *chunk;
int len = coap_get_payload(response, &chunk);
printf("|%.*s", len, (char *)chunk);
}
PROCESS_THREAD(er_example_client, ev, data)
{
static coap_endpoint_t server_ep;
PROCESS_BEGIN();
static coap_message_t request[1]; /* This way the packet can be treated as pointer as usual. */
coap_endpoint_parse(SERVER_EP, strlen(SERVER_EP), &server_ep);
etimer_set(&et, TOGGLE_INTERVAL * CLOCK_SECOND);
#if PLATFORM_HAS_BUTTON
#if !PLATFORM_SUPPORTS_BUTTON_HAL
SENSORS_ACTIVATE(button_sensor);
#endif
printf("Press a button to request %s\n", service_urls[uri_switch]);
#endif /* PLATFORM_HAS_BUTTON */
while(1) {
PROCESS_YIELD();
if(etimer_expired(&et)) {
printf("--Toggle timer--\n");
/* prepare request, TID is set by COAP_BLOCKING_REQUEST() */
coap_init_message(request, COAP_TYPE_CON, COAP_POST, 0);
coap_set_header_uri_path(request, service_urls[1]);
const char msg[] = "Toggle!";
coap_set_payload(request, (uint8_t *)msg, sizeof(msg) - 1);
LOG_INFO_COAP_EP(&server_ep);
LOG_INFO_("\n");
2017-10-26 22:20:08 +00:00
COAP_BLOCKING_REQUEST(&server_ep, request, client_chunk_handler);
printf("\n--Done--\n");
etimer_reset(&et);
#if PLATFORM_HAS_BUTTON
#if PLATFORM_SUPPORTS_BUTTON_HAL
} else if(ev == button_hal_release_event) {
#else
} else if(ev == sensors_event && data == &button_sensor) {
#endif
/* send a request to notify the end of the process */
coap_init_message(request, COAP_TYPE_CON, COAP_GET, 0);
coap_set_header_uri_path(request, service_urls[uri_switch]);
printf("--Requesting %s--\n", service_urls[uri_switch]);
LOG_INFO_COAP_EP(&server_ep);
LOG_INFO_("\n");
2017-10-26 22:20:08 +00:00
COAP_BLOCKING_REQUEST(&server_ep, request,
client_chunk_handler);
printf("\n--Done--\n");
uri_switch = (uri_switch + 1) % NUMBER_OF_URLS;
#endif /* PLATFORM_HAS_BUTTON */
}
}
PROCESS_END();
}