joining/leaving a multicast group

Every multicast address is a group address. In other words, a multicast address identifies a group.

Sending a multicast datagram is much simpler than receiving…

[1] http://www.tldp.org/HOWTO/Multicast-HOWTO-2.html is a concise 4-page introduction. Describes joining/leaving.

[2] http://ntrg.cs.tcd.ie/undergrad/4ba2/multicast/antony/ has sample code to send/receive. Note there’s no server/client actually.

 

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