Re: A Simple Socket Server Using 'inetd'

[Anonymous Monk]

Fantastic, very nice approach. Just one question. How can you find out the client's ip address / port using this approach?

[samizdat]

You can't, directly, of course. With netstat and arp you could figure it out, although the connection is transient.

[fredo2906]

Hey guys, Is it possible to get a sample of your SECSII client? I'd like to make a SECSII communication over TCP but seems to be difficult to me... Thanks a lot!

[samizdat]

I was working for Sandia Labs at the time, and under NDA. Sorry!

It isn't that difficult, actually. It's just a simple binary protocol like any other, though there are some quirky things to it. :D

[dellair]

I am trying it out on Windows, set up inetd via Cygwin and start it as Windows service. It always prompt "Bad file descriptor". at: my $line = <STDIN> When I connect via "telnet localhost <port>". Would you please shed some lights on it? Thanks,

[Sarten X]

You can, though I'm not sure if there's any quirks to it (including how it behaves when not run from inetd)

    my $hersockaddr    = getpeername(STDOUT);
    my ($port, $iaddr) = sockaddr_in($hersockaddr);
    my $ip = inet_ntoa($iaddr);

That gives you $port and $ip nicely ready to use.