1 /*
2 * Copyright (c) 2023 Basalte bv
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include <zephyr/logging/log.h>
8 LOG_MODULE_REGISTER(net_coap_service_sample, LOG_LEVEL_DBG);
9
10 #include <zephyr/net/coap_service.h>
11 #include <zephyr/net/mld.h>
12
13 #ifdef CONFIG_NET_IPV6
14 #include "net_private.h"
15 #include "ipv6.h"
16 #endif
17
18 #include "net_sample_common.h"
19
20 static const uint16_t coap_port = 5683;
21
22 #ifdef CONFIG_NET_IPV6
23
24 #define ALL_NODES_LOCAL_COAP_MCAST \
25 { { { 0xff, 0x02, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xfd } } }
26
27 #define MY_IP6ADDR \
28 { { { 0x20, 0x01, 0x0d, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x1 } } }
29
join_coap_multicast_group(void)30 static int join_coap_multicast_group(void)
31 {
32 static struct in6_addr my_addr = MY_IP6ADDR;
33 static struct sockaddr_in6 mcast_addr = {
34 .sin6_family = AF_INET6,
35 .sin6_addr = ALL_NODES_LOCAL_COAP_MCAST,
36 .sin6_port = htons(coap_port) };
37 struct net_if_addr *ifaddr;
38 struct net_if *iface;
39 int ret;
40
41 iface = net_if_get_default();
42 if (!iface) {
43 LOG_ERR("Could not get the default interface");
44 return -ENOENT;
45 }
46
47 #if defined(CONFIG_NET_CONFIG_SETTINGS)
48 if (net_addr_pton(AF_INET6,
49 CONFIG_NET_CONFIG_MY_IPV6_ADDR,
50 &my_addr) < 0) {
51 LOG_ERR("Invalid IPv6 address %s",
52 CONFIG_NET_CONFIG_MY_IPV6_ADDR);
53 }
54 #endif
55
56 ifaddr = net_if_ipv6_addr_add(iface, &my_addr, NET_ADDR_MANUAL, 0);
57 if (!ifaddr) {
58 LOG_ERR("Could not add unicast address to interface");
59 return -EINVAL;
60 }
61
62 ifaddr->addr_state = NET_ADDR_PREFERRED;
63
64 ret = net_ipv6_mld_join(iface, &mcast_addr.sin6_addr);
65 if (ret < 0) {
66 LOG_ERR("Cannot join %s IPv6 multicast group (%d)",
67 net_sprint_ipv6_addr(&mcast_addr.sin6_addr), ret);
68 return ret;
69 }
70
71 return 0;
72 }
73
main(void)74 int main(void)
75 {
76 wait_for_network();
77
78 return join_coap_multicast_group();
79 }
80
81 #else /* CONFIG_NET_IPV6 */
82
main(void)83 int main(void)
84 {
85 wait_for_network();
86
87 return 0;
88 }
89
90 #endif /* CONFIG_NET_IPV6 */
91
92 COAP_SERVICE_DEFINE(coap_server, NULL, &coap_port, COAP_SERVICE_AUTOSTART);
93
