/*
* 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 "sys/ctimer.h"
#include "net/ip/uip.h"
#include "net/ipv6/uip-ds6.h"
#include "net/ip/uip-udp-packet.h"
#include "sys/ctimer.h"
#ifdef WITH_COMPOWER
#include "powertrace.h"
#endif
#include <stdio.h>
#include <string.h>
/* Only for TMOTE Sky? */
#include "dev/serial-line.h"
#include "dev/uart1.h"
#include "net/ipv6/uip-ds6-route.h"
#define UDP_CLIENT_PORT 8765
#define UDP_SERVER_PORT 5678
#define UDP_EXAMPLE_ID 190
#define DEBUG DEBUG_FULL
#include "net/ip/uip-debug.h"
#ifndef PERIOD
#define PERIOD 60
#endif
#define START_INTERVAL (15 * CLOCK_SECOND)
#define SEND_INTERVAL (PERIOD * CLOCK_SECOND)
#define SEND_TIME (random_rand() % (SEND_INTERVAL))
#define MAX_PAYLOAD_LEN 30
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);
/*---------------------------------------------------------------------------*/
static int seq_id;
static int reply;
static void
tcpip_handler(void)
{
char *str;
if(uip_newdata()) {
str = uip_appdata;
str[uip_datalen()] = '\0';
reply++;
printf("DATA recv '%s' (s:%d, r:%d)\n", str, seq_id, reply);
}
}
/*---------------------------------------------------------------------------*/
static void
send_packet(void *ptr)
{
char buf[MAX_PAYLOAD_LEN];
#ifdef SERVER_REPLY
uint8_t num_used = 0;
uip_ds6_nbr_t *nbr;
nbr = nbr_table_head(ds6_neighbors);
while(nbr != NULL) {
nbr = nbr_table_next(ds6_neighbors, nbr);
num_used++;
}
if(seq_id > 0) {
ANNOTATE("#A r=%d/%d,color=%s,n=%d %d\n", reply, seq_id,
reply == seq_id ? "GREEN" : "RED", uip_ds6_route_num_routes(), num_used);
}
#endif /* SERVER_REPLY */
seq_id++;
PRINTF("DATA send to %d 'Hello %d'\n",
server_ipaddr.u8[sizeof(server_ipaddr.u8) - 1], seq_id);
sprintf(buf, "Hello %d from the client", seq_id);
uip_udp_packet_sendto(client_conn, buf, strlen(buf),
&server_ipaddr, UIP_HTONS(UDP_SERVER_PORT));
}
/*---------------------------------------------------------------------------*/
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);
uip_ds6_set_addr_iid(&ipaddr, &uip_lladdr);
uip_ds6_addr_add(&ipaddr, 0, ADDR_AUTOCONF);
/* The choice of server address determines its 6LoPAN header compression.
* (Our address will be compressed Mode 3 since it is derived from our link-local address)
* Obviously the choice made here must also be selected in udp-server.c.
*
* For correct Wireshark decoding using a sniffer, add the /64 prefix to the 6LowPAN protocol preferences,
* e.g. set Context 0 to fd00::. At present Wireshark copies Context/128 and then overwrites it.
* (Setting Context 0 to fd00::1111:2222:3333:4444 will report a 16 bit compressed address of fd00::1111:22ff:fe33:xxxx)
*
* Note the IPCMV6 checksum verification depends on the correct uncompressed addresses.
*/
#if 0
/* Mode 1 - 64 bits inline */
uip_ip6addr(&server_ipaddr, UIP_DS6_DEFAULT_PREFIX, 0, 0, 0, 0, 0, 0, 1);
#elif 1
/* Mode 2 - 16 bits inline */
uip_ip6addr(&server_ipaddr, UIP_DS6_DEFAULT_PREFIX, 0, 0, 0, 0, 0x00ff, 0xfe00, 1);
#else
/* Mode 3 - derived from server link-local (MAC) address */
uip_ip6addr(&server_ipaddr, UIP_DS6_DEFAULT_PREFIX, 0, 0, 0, 0x0250, 0xc2ff, 0xfea8, 0xcd1a); //redbee-econotag
#endif
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(udp_client_process, ev, data)
{
static struct etimer periodic;
static struct ctimer backoff_timer;
#if WITH_COMPOWER
static int print = 0;
#endif
PROCESS_BEGIN();
PROCESS_PAUSE();
set_global_address();
PRINTF("UDP client process started nbr:%d routes:%d\n",
NBR_TABLE_CONF_MAX_NEIGHBORS, UIP_CONF_MAX_ROUTES);
print_local_addresses();
/* new connection with remote host */
client_conn = udp_new(NULL, UIP_HTONS(UDP_SERVER_PORT), NULL);
if(client_conn == NULL) {
PRINTF("No UDP connection available, exiting the process!\n");
PROCESS_EXIT();
}
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));
/* initialize serial line */
uart1_set_input(serial_line_input_byte);
serial_line_init();
#if WITH_COMPOWER
powertrace_sniff(POWERTRACE_ON);
#endif
etimer_set(&periodic, SEND_INTERVAL);
while(1) {
PROCESS_YIELD();
if(ev == tcpip_event) {
tcpip_handler();
}
if(ev == serial_line_event_message && data != NULL) {
char *str;
str = data;
if(str[0] == 'r') {
uip_ds6_route_t *r;
uip_ipaddr_t *nexthop;
uip_ds6_defrt_t *defrt;
uip_ipaddr_t *ipaddr;
defrt = NULL;
if((ipaddr = uip_ds6_defrt_choose()) != NULL) {
defrt = uip_ds6_defrt_lookup(ipaddr);
}
if(defrt != NULL) {
PRINTF("DefRT: :: -> %02d", defrt->ipaddr.u8[15]);
PRINTF(" lt:%lu inf:%d\n", stimer_remaining(&defrt->lifetime),
defrt->isinfinite);
} else {
PRINTF("DefRT: :: -> NULL\n");
}
for(r = uip_ds6_route_head();
r != NULL;
r = uip_ds6_route_next(r)) {
nexthop = uip_ds6_route_nexthop(r);
PRINTF("Route: %02d -> %02d", r->ipaddr.u8[15], nexthop->u8[15]);
/* PRINT6ADDR(&r->ipaddr); */
/* PRINTF(" -> "); */
/* PRINT6ADDR(nexthop); */
PRINTF(" lt:%lu\n", r->state.lifetime);
}
}
}
if(etimer_expired(&periodic)) {
etimer_reset(&periodic);
ctimer_set(&backoff_timer, SEND_TIME, send_packet, NULL);
#if WITH_COMPOWER
if (print == 0) {
powertrace_print("#P");
}
if (++print == 3) {
print = 0;
}
#endif
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/