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Add #ifdefs in case not all platforms support IPv4 and IPv6 multicast.
[tinc]
/
src
/
multicast_device.c
diff --git
a/src/multicast_device.c
b/src/multicast_device.c
index
392fd37
..
495f8fc
100644
(file)
--- a/
src/multicast_device.c
+++ b/
src/multicast_device.c
@@
-92,6
+92,7
@@
static bool setup_device(void) {
}
switch(ai->ai_family) {
}
switch(ai->ai_family) {
+#ifdef IP_ADD_MEMBERSHIP
case AF_INET: {
struct ip_mreq mreq;
struct sockaddr_in in;
case AF_INET: {
struct ip_mreq mreq;
struct sockaddr_in in;
@@
-103,10
+104,16
@@
static bool setup_device(void) {
closesocket(device_fd);
return false;
}
closesocket(device_fd);
return false;
}
+#ifdef IP_MULTICAST_LOOP
setsockopt(device_fd, IPPROTO_IP, IP_MULTICAST_LOOP, &one, sizeof one);
setsockopt(device_fd, IPPROTO_IP, IP_MULTICAST_LOOP, &one, sizeof one);
+#endif
+#ifdef IP_MULTICAST_TTL
setsockopt(device_fd, IPPROTO_IP, IP_MULTICAST_TTL, &ttl, sizeof ttl);
setsockopt(device_fd, IPPROTO_IP, IP_MULTICAST_TTL, &ttl, sizeof ttl);
+#endif
} break;
} break;
+#endif
+#ifdef IPV6_JOIN_GROUP
case AF_INET6: {
struct ipv6_mreq mreq;
struct sockaddr_in6 in6;
case AF_INET6: {
struct ipv6_mreq mreq;
struct sockaddr_in6 in6;
@@
-118,9
+125,14
@@
static bool setup_device(void) {
closesocket(device_fd);
return false;
}
closesocket(device_fd);
return false;
}
+#ifdef IPV6_MULTICAST_LOOP
setsockopt(device_fd, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, &one, sizeof one);
setsockopt(device_fd, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, &one, sizeof one);
+#endif
+#ifdef IPV6_MULTICAST_HOPS
setsockopt(device_fd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &ttl, sizeof ttl);
setsockopt(device_fd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &ttl, sizeof ttl);
+#endif
} break;
} break;
+#endif
default:
logger(LOG_ERR, "Multicast for address family %hx unsupported", ai->ai_family);
default:
logger(LOG_ERR, "Multicast for address family %hx unsupported", ai->ai_family);