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Added an example of using UDP over an RPL-enabled IPv6 network

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nvt-se 2010-04-30 15:52:48 +00:00
parent d529132002
commit d751238747
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examples/ipv6/rpl-udp/udp-client.c Normal file
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/*
* 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.
*
*/
#include "contiki.h"
#include "lib/random.h"
#include "net/rime/ctimer.h"
#include "net/uip.h"
#include "net/uip-ds6.h"
#include "net/uip-udp-packet.h"
#include "node-id.h"
#include <stdio.h>
#include <string.h>
#ifndef SERVER_ID
#define SERVER_ID 1
#endif
#define UDP_CLIENT_PORT 8765
#define UDP_SERVER_PORT 5678
#define DEBUG DEBUG_PRINT
#include "net/uip-debug.h"
#define START_INTERVAL (15 * CLOCK_SECOND)
#define SEND_INTERVAL (60 * CLOCK_SECOND)
#define SEND_TIME (random_rand() % (SEND_INTERVAL))
#define MAX_PAYLOAD_LEN 30
static struct uip_udp_conn *client_conn;
/*---------------------------------------------------------------------------*/
PROCESS(udp_client_process, "UDP client process");
AUTOSTART_PROCESSES(&udp_client_process);
/*---------------------------------------------------------------------------*/
static void
tcpip_handler(void)
{
char *str;
if(uip_newdata()) {
str = uip_appdata;
str[uip_datalen()] = '\0';
printf("DATA recv '%s'\n", str);
}
}
/*---------------------------------------------------------------------------*/
static void
send_packet(void *ptr)
{
static int seq_id;
char buf[MAX_PAYLOAD_LEN];
seq_id++;
PRINTF("DATA send to %d 'Hello %d'\n",
client_conn->ripaddr.u8[15], seq_id);
sprintf(buf, "Hello %d from the client", seq_id);
uip_udp_packet_send(client_conn, buf, strlen(buf));
}
/*---------------------------------------------------------------------------*/
static void
print_local_addresses(void)
{
int i;
uint8_t state;
PRINTF("Client 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)) {
PRINT6ADDR(&uip_ds6_if.addr_list[i].ipaddr);
PRINTF("\n");
/* hack to make address "final" */
if (state == ADDR_TENTATIVE) {
uip_ds6_if.addr_list[i].state = ADDR_PREFERRED;
}
}
}
}
/*---------------------------------------------------------------------------*/
static void
set_global_address(void)
{
uip_ipaddr_t ipaddr;
uip_ip6addr(&ipaddr, 0xaaaa, 0, 0, 0, 0, 0, 0, 0);
uip_ds6_set_addr_iid(&ipaddr, &uip_lladdr);
uip_ds6_addr_add(&ipaddr, 0, ADDR_AUTOCONF);
}
/*---------------------------------------------------------------------------*/
static void
set_connection_address(uip_ipaddr_t *ipaddr)
{
#ifdef IEEE_802154_MAC_ADDRESS
/* Node 1 in the testbed scripts */
uint8_t ieee[] = IEEE_802154_MAC_ADDRESS;
ieee[7] = SERVER_ID;
uip_ip6addr(ipaddr, 0xaaaa, 0, 0, 0, 0, 0, 0, 0);
uip_ds6_set_addr_iid(ipaddr, (uip_lladdr_t *) ieee);
#else
uip_ip6addr(ipaddr,0xaaaa,0,0,0,0x0212,0x7400 + SERVER_ID,
SERVER_ID,SERVER_ID << 8 | SERVER_ID);
#endif
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(udp_client_process, ev, data)
{
static struct etimer periodic;
static struct ctimer backoff_timer;
uip_ipaddr_t ipaddr;
PROCESS_BEGIN();
PROCESS_PAUSE();
PRINTF("UDP client process started\n");
#if UIP_CONF_ROUTER
set_global_address();
#endif
print_local_addresses();
set_connection_address(&ipaddr);
/* new connection with remote host */
client_conn = udp_new(&ipaddr, HTONS(UDP_SERVER_PORT), NULL);
udp_bind(client_conn, HTONS(UDP_CLIENT_PORT));
PRINTF("Created a connection with the server ");
PRINT6ADDR(&client_conn->ripaddr);
PRINTF(" local/remote port %u/%u\n",
HTONS(client_conn->lport), HTONS(client_conn->rport));
etimer_set(&periodic, SEND_INTERVAL);
while(1) {
PROCESS_YIELD();
if(ev == tcpip_event) {
tcpip_handler();
}
if(etimer_expired(&periodic)) {
etimer_reset(&periodic);
ctimer_set(&backoff_timer, SEND_TIME, send_packet, NULL);
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/