nes-proj/examples/rpl-udp/udp-client.c

76 lines
2.2 KiB
C

#include "contiki.h"
#include "rpl.h"
#include "random.h"
#include "net/netstack.h"
#include "net/ipv6/simple-udp.h"
#include "sys/log.h"
#define LOG_MODULE "App"
#define LOG_LEVEL LOG_LEVEL_INFO
#define WITH_SERVER_REPLY 1
#define UDP_CLIENT_PORT 8765
#define UDP_SERVER_PORT 5678
static struct simple_udp_connection udp_conn;
#define START_INTERVAL (15 * CLOCK_SECOND)
#define SEND_INTERVAL (60 * CLOCK_SECOND)
static struct simple_udp_connection udp_conn;
static uip_ipaddr_t server_ipaddr;
/*---------------------------------------------------------------------------*/
PROCESS(udp_client_process, "UDP client");
AUTOSTART_PROCESSES(&udp_client_process);
/*---------------------------------------------------------------------------*/
static void
udp_rx_callback(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)
{
unsigned count = *(unsigned *)data;
LOG_INFO("Received response %u from ", count);
LOG_INFO_6ADDR(sender_addr);
LOG_INFO_("\n");
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(udp_client_process, ev, data)
{
static struct etimer periodic_timer;
static unsigned count;
PROCESS_BEGIN();
INIT_SERVER_IPADDR(server_ipaddr);
/* Initialize UDP connection */
simple_udp_register(&udp_conn, UDP_CLIENT_PORT, NULL,
UDP_SERVER_PORT, udp_rx_callback);
etimer_set(&periodic_timer, random_rand() % SEND_INTERVAL);
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&periodic_timer));
etimer_set(&periodic_timer, SEND_INTERVAL);
while(1) {
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&periodic_timer));
if(rpl_is_reachable()) {
LOG_INFO("Sending request %u to ", count);
LOG_INFO_6ADDR(&server_ipaddr);
LOG_INFO_("\n");
simple_udp_sendto(&udp_conn, &count, sizeof(count), &server_ipaddr);
count++;
} else {
LOG_INFO("Not reachable yet %p\n", rpl_get_any_dag());
}
etimer_reset(&periodic_timer);
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/