Hi,

I have following issue to solve:

The network have one server which sends multicast streams to several multicast groups.

I would like it to stop streaming if no client is listening, and start streaming again when client is joining multicast group.

I see from sniffing, that clients indeed send IGMP join group protocol message , and I wonder how to make linux server to handle this join and manage multicast group.

I saw that kernel have provisions to manage multicast groups through setsockopt(), but I did not find how to get join/leave group notification at user
space.

I know that there are multicast routers , like mrouted and pimd and I am trying to configure thema at they moment but I doubt that I can configure only one interface because it contradict routing concept, isn't it ?

Thanks ,
Lev

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