Ok, so your suggestion that multicast is an alternative to ICMP is wrong. You need some kind of connection and disconnection mechanism whether or not multicasting is used.

Note that I don't think ICMP would even work as a disconnection mechanism. It will only tell you whether the machine is reachable (and might not even do that with firewalls), not if a UDP port is reachable.

but that's part of the beauty of multicast.

It's part of the beauty of UDP, as it is what allows multicast to exist.

In reply to Re^8: UDP server with IO::Socket::INET by ikegami
in thread UDP server with IO::Socket::INET by jarmund

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