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NOTE: use Perl; is on undef hiatus. You can read content, but you can't post it. More info will be forthcoming forthcomingly.

All the Perl that's Practical to Extract and Report

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  • Unlike many other protocols, HTTP servers don't transmit a banner when clients connect. They just quietly sit there waiting for the client's request.
    • The event is probably worth still having through, because once the connection is created, the server might need to do some internal accounting related to the connection. For example, firing off a new child process if we're getting close to running out of available children to handle connections (although in this case it's async so you wouldn't do that anyways).

      But you get what I mean.

      • It could check the incoming client's IP against an ACL, and decide to refuse it before even getting the request. Sort of like ACL blocking pre-HTTP but post-iptables/kernel-socket-connection.