ocs init

plat/iptrans/src/mcast_join.c

@@ -0,0 +1,59 @@
+
+#include     "./include/iptrans.h"
+
+/*@ignore@*/
+int
+mcast_join(int sockfd, struct sockaddr *sa, socklen_t salen,
+           const char *ifname,u_int ifindex)
+{
+   //u_char flag=1;
+   //int len;
+   //struct hostent *myhost;
+
+   switch(sa->sa_family)
+  {
+   case AF_INET:{
+     struct ip_mreq mreq;
+     struct ifreq ifreq;
+     memcpy(&mreq.imr_multiaddr,
+            &((struct sockaddr_in *)sa)->sin_addr,
+            sizeof(struct in_addr));
+     if(ifindex>0){
+       if(if_indextoname(ifindex,ifreq.ifr_name)==NULL){
+         // errno=ENXIO;
+          return(-1);
+       }
+       goto doioctl;
+     } 
+     else if(ifname !=NULL){
+       strncpy(ifreq.ifr_name,ifname,IFNAMSIZ);
+     doioctl:
+       if(ioctl(sockfd,SIOCGIFADDR,&ifreq)<0)
+         return (-1);
+       memcpy(&mreq.imr_interface.s_addr,
+	      &((struct sockaddr_in *)&ifreq.ifr_addr)->sin_addr,
+             sizeof(struct in_addr));
+       return (setsockopt(sockfd,IPPROTO_IP,IP_ADD_MEMBERSHIP,
+             &mreq,sizeof(mreq)));
+     }
+     else  
+       mreq.imr_interface.s_addr=htonl(INADDR_ANY);// inet_addr(name);
+//     setsockopt(sockfd,IPPROTO_IP,IP_MULTICAST_IF,&flag,sizeof(flag));
+       return (setsockopt(sockfd,IPPROTO_IP,IP_ADD_MEMBERSHIP,
+             &mreq,sizeof(mreq)));
+    }
+    default:
+     // errno=EPROTONOSUPPORT;
+      return(-1);
+    }
+} 
+     		
+int 
+mcast_set_loop(int sockfd, int onoff)
+{
+  u_char flag;
+  flag=onoff;
+  return (setsockopt(sockfd,IPPROTO_IP,IP_MULTICAST_LOOP,
+          &flag,sizeof(flag)));
+}
+/*@end@*/