osd-contiki/examples/udp-receiver-ipv6/example-udp-receiver.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 "contiki-lib.h"
#include "contiki-net.h"
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#include <string.h>
#define DEBUG 1
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF(" %02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x ", ((u8_t *)addr)[0], ((u8_t *)addr)[1], ((u8_t *)addr)[2], ((u8_t *)addr)[3], ((u8_t *)addr)[4], ((u8_t *)addr)[5], ((u8_t *)addr)[6], ((u8_t *)addr)[7], ((u8_t *)addr)[8], ((u8_t *)addr)[9], ((u8_t *)addr)[10], ((u8_t *)addr)[11], ((u8_t *)addr)[12], ((u8_t *)addr)[13], ((u8_t *)addr)[14], ((u8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF(" %02x:%02x:%02x:%02x:%02x:%02x ",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
#define UDP_DATA_LEN 120
static struct uip_udp_conn *udpconn;
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PROCESS(udp_process_receiver, "UDP test receiver");
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AUTOSTART_PROCESSES(&udp_process_receiver);
/*---------------------------------------------------------------------------*/
static void
udphandler(process_event_t ev, process_data_t data)
{
if (ev == tcpip_event) {
if(uip_newdata()) {
((char *)uip_appdata)[uip_datalen()] = 0;
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printf("Receiver received: '%s'\n", (char *)uip_appdata);
}
}
printf("Receiver sending to: ");
PRINT6ADDR(&udpconn->ripaddr);
printf("\n");
uip_udp_packet_send(udpconn, "Receiver says Hi!", strlen("Receiver says Hi!"));
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(udp_process_receiver, ev, data)
{
uip_ipaddr_t ipaddr;
PROCESS_BEGIN();
PRINTF("Process test UDP receiver started\n");
PRINTF("Local IPv6 address: ");
PRINT6ADDR(&uip_netif_physical_if.addresses[0].ipaddr);
PRINTF("\n");
#ifdef UDP_ADDR_A
uip_ip6addr(&ipaddr,
UDP_ADDR_A,UDP_ADDR_B,UDP_ADDR_C,UDP_ADDR_D,
UDP_ADDR_E,UDP_ADDR_F,UDP_ADDR_G,UDP_ADDR_H);
#else /* UDP_ADDR_A */
uip_ip6addr(&ipaddr,0xFE80,0,0,0,0x2022,0x2222,0x2222,0x2222);
#endif /* UDP_ADDR_A */
udpconn = udp_new(&ipaddr, HTONS(0xF0B0+1), NULL);
udp_bind(udpconn, HTONS(0xF0B0));
PRINTF("Created connection with remote peer ");
PRINT6ADDR(&udpconn->ripaddr);
PRINTF("local/remote port %u/%u\n", HTONS(udpconn->lport),HTONS(udpconn->rport));
while(1) {
PROCESS_YIELD();
udphandler(ev, data);
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/