Source Specific Multicast Service Model
- Sources simply send traffic to a host-group G, No change over Internet Standard Multicast service.
sendto(sock, packet,
, G,
)
- Receivers subscribe to (S,G) channel(s)
setsockopt(sock,
, IP_ADD_SOURCE_MEMBERSHIP,
(S, G, iface),
)
- Receive traffic from channel S sending to G. recvfrom(sock, &packet,
&source,
)
- Receiver need to know the sources before receiving!