204 lines
6.3 KiB
C
204 lines
6.3 KiB
C
/*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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#include "contiki.h"
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#include "lib/random.h"
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#include "sys/ctimer.h"
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#include "net/uip.h"
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#include "net/uip-ds6.h"
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#include "net/uip-udp-packet.h"
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#include "sys/ctimer.h"
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#ifdef WITH_COMPOWER
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#include "powertrace.h"
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#endif
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#include <stdio.h>
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#include <string.h>
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#define UDP_CLIENT_PORT 8765
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#define UDP_SERVER_PORT 5678
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#define UDP_EXAMPLE_ID 190
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#define DEBUG DEBUG_PRINT
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#include "net/uip-debug.h"
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#ifndef PERIOD
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#define PERIOD 60
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#endif
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#define START_INTERVAL (15 * CLOCK_SECOND)
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#define SEND_INTERVAL (PERIOD * CLOCK_SECOND)
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#define SEND_TIME (random_rand() % (SEND_INTERVAL))
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#define MAX_PAYLOAD_LEN 30
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static struct uip_udp_conn *client_conn;
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static uip_ipaddr_t server_ipaddr;
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/*---------------------------------------------------------------------------*/
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PROCESS(udp_client_process, "UDP client process");
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AUTOSTART_PROCESSES(&udp_client_process);
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/*---------------------------------------------------------------------------*/
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static void
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tcpip_handler(void)
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{
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char *str;
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if(uip_newdata()) {
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str = uip_appdata;
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str[uip_datalen()] = '\0';
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printf("DATA recv '%s'\n", str);
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}
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}
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/*---------------------------------------------------------------------------*/
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static void
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send_packet(void *ptr)
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{
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static int seq_id;
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char buf[MAX_PAYLOAD_LEN];
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seq_id++;
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PRINTF("DATA send to %d 'Hello %d'\n",
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server_ipaddr.u8[sizeof(server_ipaddr.u8) - 1], seq_id);
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sprintf(buf, "Hello %d from the client", seq_id);
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uip_udp_packet_sendto(client_conn, buf, strlen(buf),
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&server_ipaddr, UIP_HTONS(UDP_SERVER_PORT));
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}
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/*---------------------------------------------------------------------------*/
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static void
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print_local_addresses(void)
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{
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int i;
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uint8_t state;
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PRINTF("Client IPv6 addresses: ");
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for(i = 0; i < UIP_DS6_ADDR_NB; i++) {
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state = uip_ds6_if.addr_list[i].state;
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if(uip_ds6_if.addr_list[i].isused &&
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(state == ADDR_TENTATIVE || state == ADDR_PREFERRED)) {
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PRINT6ADDR(&uip_ds6_if.addr_list[i].ipaddr);
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PRINTF("\n");
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/* hack to make address "final" */
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if (state == ADDR_TENTATIVE) {
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uip_ds6_if.addr_list[i].state = ADDR_PREFERRED;
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}
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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static void
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set_global_address(void)
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{
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uip_ipaddr_t ipaddr;
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uip_ip6addr(&ipaddr, 0xaaaa, 0, 0, 0, 0, 0, 0, 0);
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uip_ds6_set_addr_iid(&ipaddr, &uip_lladdr);
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uip_ds6_addr_add(&ipaddr, 0, ADDR_AUTOCONF);
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/* The choice of server address determines its 6LoPAN header compression.
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* (Our address will be compressed Mode 3 since it is derived from our link-local address)
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* Obviously the choice made here must also be selected in udp-server.c.
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*
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* For correct Wireshark decoding using a sniffer, add the /64 prefix to the 6LowPAN protocol preferences,
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* e.g. set Context 0 to aaaa::. At present Wireshark copies Context/128 and then overwrites it.
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* (Setting Context 0 to aaaa::1111:2222:3333:4444 will report a 16 bit compressed address of aaaa::1111:22ff:fe33:xxxx)
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*
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* Note the IPCMV6 checksum verification depends on the correct uncompressed addresses.
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*/
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#if 0
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/* Mode 1 - 64 bits inline */
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uip_ip6addr(&server_ipaddr, 0xaaaa, 0, 0, 0, 0, 0, 0, 1);
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#elif 1
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/* Mode 2 - 16 bits inline */
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uip_ip6addr(&server_ipaddr, 0xaaaa, 0, 0, 0, 0, 0x00ff, 0xfe00, 1);
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#else
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/* Mode 3 - derived from server link-local (MAC) address */
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uip_ip6addr(&server_ipaddr, 0xaaaa, 0, 0, 0, 0x0250, 0xc2ff, 0xfea8, 0xcd1a); //redbee-econotag
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#endif
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(udp_client_process, ev, data)
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{
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static struct etimer periodic;
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static struct ctimer backoff_timer;
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static int print = 0;
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PROCESS_BEGIN();
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PROCESS_PAUSE();
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set_global_address();
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PRINTF("UDP client process started\n");
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print_local_addresses();
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/* new connection with remote host */
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client_conn = udp_new(NULL, UIP_HTONS(UDP_SERVER_PORT), NULL);
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if(client_conn == NULL) {
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PRINTF("No UDP connection available, exiting the process!\n");
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PROCESS_EXIT();
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}
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udp_bind(client_conn, UIP_HTONS(UDP_CLIENT_PORT));
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PRINTF("Created a connection with the server ");
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PRINT6ADDR(&client_conn->ripaddr);
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PRINTF(" local/remote port %u/%u\n",
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UIP_HTONS(client_conn->lport), UIP_HTONS(client_conn->rport));
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#if WITH_COMPOWER
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powertrace_sniff(POWERTRACE_ON);
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#endif
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etimer_set(&periodic, SEND_INTERVAL);
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while(1) {
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PROCESS_YIELD();
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if(ev == tcpip_event) {
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tcpip_handler();
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}
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if(etimer_expired(&periodic)) {
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etimer_reset(&periodic);
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ctimer_set(&backoff_timer, SEND_TIME, send_packet, NULL);
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#if WITH_COMPOWER
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if (print == 0) {
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powertrace_print("#P");
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}
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if (++print == 3) {
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print = 0;
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}
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#endif
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}
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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