X-Git-Url: https://git.sesse.net/?p=cubemap;a=blobdiff_plain;f=config.cpp;h=f474f8c495f2cd07c624bd87a9e7a0f4d58f3f6c;hp=57bf10a7f0ddc038f892a4e08b62706341d98842;hb=0eac9253f23925734e256c63081e157c68c70704;hpb=b08dc2a81825a298a03f2dee2ae7dd7045e72739;ds=sidebyside

diff --git a/config.cpp b/config.cpp
index 57bf10a..f474f8c 100644
--- a/config.cpp
+++ b/config.cpp
@@ -5,6 +5,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <net/if.h>
 #include <sys/socket.h>
 #include <map>
 #include <string>
@@ -298,6 +299,18 @@ bool parse_udpstream(const ConfigLine &line, Config *config)
 		udpstream.ttl = atoi(ttl_it->second.c_str());
 	}
 
+	// Parse the multicast interface index.
+	map<string, string>::const_iterator multicast_iface_it = line.parameters.find("multicast_output_interface");
+	if (multicast_iface_it == line.parameters.end()) {
+		udpstream.multicast_iface_index = -1;
+	} else {
+		udpstream.multicast_iface_index = if_nametoindex(multicast_iface_it->second.c_str());
+		if (udpstream.multicast_iface_index == 0) {
+			log(ERROR, "Interface '%s' does not exist", multicast_iface_it->second.c_str());
+			return false;
+		}
+	}
+
 	config->udpstreams.push_back(udpstream);
 	return true;
 }