let mcast_groups take hostnames

diff --git a/src/comm.cc b/src/comm.cc
index a9b9e393d3f22645e2d25a1e46bbebaf24836305..f7d835b9c216d3a9f548f3d13e6a2496dd261010 100644 (file)
--- a/src/comm.cc
+++ b/src/comm.cc
@@ -1,6 +1,6 @@
 
 /*
- * $Id: comm.cc,v 1.132 1997/02/06 18:44:24 wessels Exp $
+ * $Id: comm.cc,v 1.133 1997/02/07 04:53:14 wessels Exp $
  *
  * DEBUG: section 5     Socket Functions
  * AUTHOR: Harvest Derived
@@ -1153,16 +1153,22 @@ comm_join_mcast_groups(int fd)
 #ifdef IP_MULTICAST_TTL
     struct ip_mreq mr;
     wordlist *s = NULL;
-
+    const ipcache_addrs *ia = NULL;
+    int i;
+    int x;
     for (s = Config.mcast_group_list; s; s = s->next) {
        debug(5, 10, "comm_join_mcast_groups: joining group %s on FD %d\n",
            s->key, fd);
-       mr.imr_multiaddr.s_addr = inet_addr(s->key);
-       mr.imr_interface.s_addr = INADDR_ANY;
-       if (setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
-               (char *) &mr, sizeof(struct ip_mreq)) < 0)
-                   debug(5, 1, "comm_join_mcast_groups: FD %d, addr: %s\n",
-               fd, s->key);
+       ia = ipcache_gethostbyname(s->key, IP_BLOCKING_LOOKUP);
+       for (i = 0; i < ia->count; i++) {
+           mr.imr_multiaddr.s_addr = (ia->in_addrs + i)->s_addr;
+           mr.imr_interface.s_addr = INADDR_ANY;
+           x = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
+               (char *) &mr, sizeof(struct ip_mreq));
+           if (x < 0)
+               debug(5, 1, "comm_join_mcast_groups: FD %d, addr: %s [%s]\n",
+                   fd, s->key, inet_ntoa(*(ia->in_addrs + i)));
+       }
     }
 #endif
     return 0;