nes-proj/examples/ipv6/simple-udp-rpl/unicast-sender.c

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/*
* Copyright (c) 2011, Swedish Institute of Computer Science.
* 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.
*
*/
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#include "contiki.h"
#include "lib/random.h"
#include "sys/ctimer.h"
#include "sys/etimer.h"
#include "net/ip/uip.h"
#include "net/ipv6/uip-ds6.h"
#include "net/ip/uip-debug.h"
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#include "sys/node-id.h"
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#include "simple-udp.h"
#include "servreg-hack.h"
#include <stdio.h>
#include <string.h>
#define UDP_PORT 1234
#define SERVICE_ID 190
#define SEND_INTERVAL (60 * CLOCK_SECOND)
#define SEND_TIME (random_rand() % (SEND_INTERVAL))
static struct simple_udp_connection unicast_connection;
/*---------------------------------------------------------------------------*/
PROCESS(unicast_sender_process, "Unicast sender example process");
AUTOSTART_PROCESSES(&unicast_sender_process);
/*---------------------------------------------------------------------------*/
static void
receiver(struct simple_udp_connection *c,
const uip_ipaddr_t *sender_addr,
uint16_t sender_port,
const uip_ipaddr_t *receiver_addr,
uint16_t receiver_port,
const uint8_t *data,
uint16_t datalen)
{
printf("Data received on port %d from port %d with length %d\n",
receiver_port, sender_port, datalen);
}
/*---------------------------------------------------------------------------*/
static void
set_global_address(void)
{
uip_ipaddr_t ipaddr;
int i;
uint8_t state;
uip_ip6addr(&ipaddr, UIP_DS6_DEFAULT_PREFIX, 0, 0, 0, 0, 0, 0, 0);
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uip_ds6_set_addr_iid(&ipaddr, &uip_lladdr);
uip_ds6_addr_add(&ipaddr, 0, ADDR_AUTOCONF);
printf("IPv6 addresses: ");
for(i = 0; i < UIP_DS6_ADDR_NB; i++) {
state = uip_ds6_if.addr_list[i].state;
if(uip_ds6_if.addr_list[i].isused &&
(state == ADDR_TENTATIVE || state == ADDR_PREFERRED)) {
uip_debug_ipaddr_print(&uip_ds6_if.addr_list[i].ipaddr);
printf("\n");
}
}
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(unicast_sender_process, ev, data)
{
static struct etimer periodic_timer;
static struct etimer send_timer;
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uip_ipaddr_t *addr;
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PROCESS_BEGIN();
servreg_hack_init();
set_global_address();
simple_udp_register(&unicast_connection, UDP_PORT,
NULL, UDP_PORT, receiver);
etimer_set(&periodic_timer, SEND_INTERVAL);
while(1) {
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&periodic_timer));
etimer_reset(&periodic_timer);
etimer_set(&send_timer, SEND_TIME);
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&send_timer));
addr = servreg_hack_lookup(SERVICE_ID);
if(addr != NULL) {
static unsigned int message_number;
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char buf[20];
printf("Sending unicast to ");
uip_debug_ipaddr_print(addr);
printf("\n");
sprintf(buf, "Message %d", message_number);
message_number++;
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simple_udp_sendto(&unicast_connection, buf, strlen(buf) + 1, addr);
} else {
printf("Service %d not found\n", SERVICE_ID);
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}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/