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Fix lwIP builds

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fixes #3119

lwIP does not export ip_mreq by default, it requires enabling support for IGMP by setting LWIP_IGMP, with the associated extra stuff. Mongoose will print an error if mg_multicast_add() is called with no multicast support in lwIP.
This commit is contained in:
Sergio R. Caprile committed 2025-04-29 19:24:17 -03:00
1 parent 8ab514fabc
commit f618fe125c
2 files changed
+8
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mongoose.c
+4
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@@ -8394,11 +8394,15 @@ void mg_multicast_add(struct mg_connection *c, char *ip) {
// TODO(): prvAllowIPPacketIPv4()
#else
// lwIP, Unix, Windows, Zephyr(, AzureRTOS ?)
#if MG_ENABLE_LWIP && !LWIP_IGMP
MG_ERROR(("LWIP_IGMP not defined, no multicast support"));
#else
struct ip_mreq mreq;
mreq.imr_multiaddr.s_addr = inet_addr(ip);
mreq.imr_interface.s_addr = mg_htonl(INADDR_ANY);
setsockopt(FD(c), IPPROTO_IP, IP_ADD_MEMBERSHIP, (char *) &mreq, sizeof(mreq));
#endif
#endif
}
bool mg_open_listener(struct mg_connection *c, const char *url) {
src/sock.c
+4
View File
@@ -184,11 +184,15 @@ void mg_multicast_add(struct mg_connection *c, char *ip) {
// TODO(): prvAllowIPPacketIPv4()
#else
// lwIP, Unix, Windows, Zephyr(, AzureRTOS ?)
#if MG_ENABLE_LWIP && !LWIP_IGMP
MG_ERROR(("LWIP_IGMP not defined, no multicast support"));
#else
struct ip_mreq mreq;
mreq.imr_multiaddr.s_addr = inet_addr(ip);
mreq.imr_interface.s_addr = mg_htonl(INADDR_ANY);
setsockopt(FD(c), IPPROTO_IP, IP_ADD_MEMBERSHIP, (char *) &mreq, sizeof(mreq));
#endif
#endif
}
bool mg_open_listener(struct mg_connection *c, const char *url) {