1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
/*
* AF_INET6 over IEEE 802.15.4 socket example
*
* Copyright (C) 2016 Samsung Electronics Co., Ltd.
*
* Author: Stefan Schmidt <stefan@osg.samsung.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* gcc af_inet6_tx.c -o af_inet6_tx */
#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <arpa/inet.h>
#include <net/if.h>
#define IEEE802154_ADDR_LEN 8
#define MAX_PACKET_LEN 2048
int main(int argc, char *argv[]) {
int ret, sd;
struct sockaddr_in6 dst;
struct ifreq ifr;
char buf[MAX_PACKET_LEN + 1];
/* Create IPv6 address family socket for the SOCK_DGRAM type */
sd = socket(PF_INET6, SOCK_DGRAM, 0);
if (sd < 0) {
perror("socket");
return 1;
}
/* Bind the socket to lowpan0 to make sure we send over it, adapt to your setup */
memset(&ifr, 0, sizeof(ifr));
snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "lowpan0");
ret = setsockopt(sd, SOL_SOCKET, SO_BINDTODEVICE, (void *)&ifr, sizeof(ifr));
if (ret < 0) {
perror("setsockopt");
return 1;
}
/* Prepare destination socket address struct */
memset(&dst, 0, sizeof(dst));
dst.sin6_family = AF_INET6;
/* Port within the compressed port range for potential NHC UDP compression */
dst.sin6_port = htons(61617);
inet_pton(AF_INET6, "ff02::1", &(dst.sin6_addr));
sprintf(buf, "Hello world from AF_INET6 socket example!");
/* sendto() is used for implicity in this example, bin()/send() would
* be an alternative */
ret = sendto(sd, buf, strlen(buf), 0, (struct sockaddr *)&dst, sizeof(dst));
if (ret < 0) {
perror("sendto");
}
shutdown(sd, SHUT_RDWR);
close(sd);
return 0;
}
|
