Part of the now (erased) question is how to do something like a request/reply flow as HTTP has over UDP.

As UDP is not TCP, there is no concept of a "connection" for UDP. So I expect that most UDP-based protocols will simulate that "connection" by actively sending a separate packet to the originating IP address in response to receiving an UDP packet.

In reply to Re: please delete by Corion
in thread How do I make a UDP request to a torrent tracker? by Cody Fendant

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