nes-proj/examples/ipv6/rpl-collect/udp-sender.c

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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 "net/ip/uip.h"
#include "net/ipv6/uip-ds6.h"
#include "net/ip/uip-udp-packet.h"
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#include "net/rpl/rpl.h"
#include "dev/serial-line.h"
#if CONTIKI_TARGET_Z1
#include "dev/uart0.h"
#else
#include "dev/uart1.h"
#endif
#include "collect-common.h"
#include "collect-view.h"
#include <stdio.h>
#include <string.h>
#define UDP_CLIENT_PORT 8775
#define UDP_SERVER_PORT 5688
#define DEBUG DEBUG_PRINT
#include "net/ip/uip-debug.h"
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static struct uip_udp_conn *client_conn;
static uip_ipaddr_t server_ipaddr;
/*---------------------------------------------------------------------------*/
PROCESS(udp_client_process, "UDP client process");
AUTOSTART_PROCESSES(&udp_client_process, &collect_common_process);
/*---------------------------------------------------------------------------*/
void
collect_common_set_sink(void)
{
/* A udp client can never become sink */
}
/*---------------------------------------------------------------------------*/
void
collect_common_net_print(void)
{
rpl_dag_t *dag;
uip_ds6_route_t *r;
/* Let's suppose we have only one instance */
dag = rpl_get_any_dag();
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if(dag->preferred_parent != NULL) {
PRINTF("Preferred parent: ");
PRINT6ADDR(rpl_get_parent_ipaddr(dag->preferred_parent));
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PRINTF("\n");
}
for(r = uip_ds6_route_head();
r != NULL;
r = uip_ds6_route_next(r)) {
PRINT6ADDR(&r->ipaddr);
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}
PRINTF("---\n");
}
/*---------------------------------------------------------------------------*/
static void
tcpip_handler(void)
{
if(uip_newdata()) {
/* Ignore incoming data */
}
}
/*---------------------------------------------------------------------------*/
void
collect_common_send(void)
{
static uint8_t seqno;
struct {
uint8_t seqno;
uint8_t for_alignment;
struct collect_view_data_msg msg;
} msg;
/* struct collect_neighbor *n; */
uint16_t parent_etx;
uint16_t rtmetric;
uint16_t num_neighbors;
uint16_t beacon_interval;
rpl_parent_t *preferred_parent;
linkaddr_t parent;
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rpl_dag_t *dag;
if(client_conn == NULL) {
/* Not setup yet */
return;
}
memset(&msg, 0, sizeof(msg));
seqno++;
if(seqno == 0) {
/* Wrap to 128 to identify restarts */
seqno = 128;
}
msg.seqno = seqno;
linkaddr_copy(&parent, &linkaddr_null);
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parent_etx = 0;
/* Let's suppose we have only one instance */
dag = rpl_get_any_dag();
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if(dag != NULL) {
preferred_parent = dag->preferred_parent;
if(preferred_parent != NULL) {
uip_ds6_nbr_t *nbr;
nbr = uip_ds6_nbr_lookup(rpl_get_parent_ipaddr(preferred_parent));
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if(nbr != NULL) {
/* Use parts of the IPv6 address as the parent address, in reversed byte order. */
parent.u8[LINKADDR_SIZE - 1] = nbr->ipaddr.u8[sizeof(uip_ipaddr_t) - 2];
parent.u8[LINKADDR_SIZE - 2] = nbr->ipaddr.u8[sizeof(uip_ipaddr_t) - 1];
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parent_etx = rpl_get_parent_rank((uip_lladdr_t *) uip_ds6_nbr_get_ll(nbr)) / 2;
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}
}
rtmetric = dag->rank;
beacon_interval = (uint16_t) ((2L << dag->instance->dio_intcurrent) / 1000);
num_neighbors = uip_ds6_nbr_num();
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} else {
rtmetric = 0;
beacon_interval = 0;
num_neighbors = 0;
}
/* num_neighbors = collect_neighbor_list_num(&tc.neighbor_list); */
collect_view_construct_message(&msg.msg, &parent,
parent_etx, rtmetric,
num_neighbors, beacon_interval);
uip_udp_packet_sendto(client_conn, &msg, sizeof(msg),
&server_ipaddr, UIP_HTONS(UDP_SERVER_PORT));
}
/*---------------------------------------------------------------------------*/
void
collect_common_net_init(void)
{
#if CONTIKI_TARGET_Z1
uart0_set_input(serial_line_input_byte);
#else
uart1_set_input(serial_line_input_byte);
#endif
serial_line_init();
}
/*---------------------------------------------------------------------------*/
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, 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);
/* set server address */
uip_ip6addr(&server_ipaddr, UIP_DS6_DEFAULT_PREFIX, 0, 0, 0, 0, 0, 0, 1);
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}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(udp_client_process, ev, data)
{
PROCESS_BEGIN();
PROCESS_PAUSE();
set_global_address();
PRINTF("UDP client process started\n");
print_local_addresses();
/* new connection with remote host */
client_conn = udp_new(NULL, UIP_HTONS(UDP_SERVER_PORT), NULL);
udp_bind(client_conn, UIP_HTONS(UDP_CLIENT_PORT));
PRINTF("Created a connection with the server ");
PRINT6ADDR(&client_conn->ripaddr);
PRINTF(" local/remote port %u/%u\n",
UIP_HTONS(client_conn->lport), UIP_HTONS(client_conn->rport));
while(1) {
PROCESS_YIELD();
if(ev == tcpip_event) {
tcpip_handler();
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/