If this was my project, I would definitely use an explicit disconnection.

That said, ICMP does provide "Destination Unreachable" which could be used to detect clients that are MIA. Of course, using ICMP for this would be a lot of work for very little practical gain, which is why I recommended multicast.

In reply to Re^5: UDP server with IO::Socket::INET by rowdog
in thread UDP server with IO::Socket::INET by jarmund

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