The IP Multicast Initiative
By Bob Quinn
Dr. Dobb's Journal October 1997
nRet = setsockopt(hSocket, IPPROTO_IP, IP_MULTICAST_TTL, (char *)&lTTL, sizeof(lTTL)); if (nRet == SOCKET_ERROR) { printf ("setsockopt() IP_MULTICAST_TTL failed, Err: %d\n", WSAGetLastError()); }
Example 5: Set TTL to traverse up to multiple routers.
Copyright © 1997, Dr. Dobb's Journal