Ticket #629: Added IGMPv2 multicast socket options (thanks David Parker for the patch).

git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@2283 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjlib/src/pj/sock_common.c b/pjlib/src/pj/sock_common.c
index c92ca51..6c4383a 100644
--- a/pjlib/src/pj/sock_common.c
+++ b/pjlib/src/pj/sock_common.c
@@ -686,6 +686,31 @@
     return PJ_SO_SNDBUF;
 }
 
+PJ_DEF(pj_uint16_t) pj_IP_MULTICAST_IF(void)
+{
+    return PJ_IP_MULTICAST_IF;
+}
+
+PJ_DEF(pj_uint16_t) pj_IP_MULTICAST_TTL(void)
+{
+    return PJ_IP_MULTICAST_TTL;
+}
+
+PJ_DEF(pj_uint16_t) pj_IP_MULTICAST_LOOP(void)
+{
+    return PJ_IP_MULTICAST_LOOP;
+}
+
+PJ_DEF(pj_uint16_t) pj_IP_ADD_MEMBERSHIP(void)
+{
+    return PJ_IP_ADD_MEMBERSHIP;
+}
+
+PJ_DEF(pj_uint16_t) pj_IP_DROP_MEMBERSHIP(void)
+{
+    return PJ_IP_DROP_MEMBERSHIP;
+}
+
 PJ_DEF(int) pj_MSG_OOB(void)
 {
     return PJ_MSG_OOB;