try fixing mcast

diff --git a/src/main.cc b/src/main.cc
index 3aedd3c6ee61660eaf1b8a759516cffc8c11e7b2..243bb4889dd8417129f58e3d235f73ece98e035b 100644 (file)
--- a/src/main.cc
+++ b/src/main.cc
@@ -1,5 +1,5 @@
 /*
- * $Id: main.cc,v 1.119 1996/11/30 23:09:54 wessels Exp $
+ * $Id: main.cc,v 1.120 1996/12/01 00:19:00 wessels Exp $
  *
  * DEBUG: section 1     Startup and Main Loop
  * AUTHOR: Harvest Derived
@@ -411,6 +411,8 @@ serverConnectionsOpen(void)
 #if defined(IP_ADD_MEMBERSHIP) && defined(IP_MULTICAST_TTL)
        if (Config.vizHack.addr.s_addr > inet_addr("224.0.0.0")) {
            struct ip_mreq mr;
+           char ttl = (char) Config.vizHack.mcast_ttl;
+           memset((char *) &mr, '\0', sizeof(struct ip_mreq));
            mr.imr_multiaddr.s_addr = Config.vizHack.addr.s_addr;
            mr.imr_interface.s_addr = INADDR_ANY;
            x = setsockopt(vizSock,
@@ -419,15 +421,25 @@ serverConnectionsOpen(void)
                (char *) &mr,
                sizeof(struct ip_mreq));
            if (x < 0)
-               debug(5, 1, "IP_ADD_MEMBERSHIP: FD %d, addr %s: %s\n",
+               debug(50, 1, "IP_ADD_MEMBERSHIP: FD %d, addr %s: %s\n",
                    vizSock, inet_ntoa(Config.vizHack.addr), xstrerror());
-           if (setsockopt(vizSock, IPPROTO_IP, IP_MULTICAST_TTL,
-                   (char *) &Config.vizHack.mcast_ttl, sizeof(char)) < 0)
-                    debug(50, 1, "IP_MULTICAST_TTL: FD %d, TTL %d: %s\n",
+           x = setsockopt(vizSock,
+               IPPROTO_IP,
+               IP_MULTICAST_TTL,
+               &ttl,
+               sizeof(char));
+           if (x < 0)
+               debug(50, 1, "IP_MULTICAST_TTL: FD %d, TTL %d: %s\n",
                    vizSock, Config.vizHack.mcast_ttl, xstrerror());
+           ttl = 0;
+           x = sizeof(char);
+           getsockopt(vizSock, IPPROTO_IP, IP_MULTICAST_TTL, &ttl, &x);
+           debug(0,0,"vizSock on FD %d, ttl=%d\n", vizSock, (int) ttl);
        }
-       memset((char *) &Config.vizHack.S, '\0', sizeof(struct sockaddr_in));
+#else
+       debug(1,0,"vizSock: Could not join multicast group\n");
 #endif
+       memset((char *) &Config.vizHack.S, '\0', sizeof(struct sockaddr_in));
        Config.vizHack.S.sin_family = AF_INET;
        Config.vizHack.S.sin_addr = Config.vizHack.addr;
        Config.vizHack.S.sin_port = htons(Config.vizHack.port);