Thanks for the responses. I ended up using IO::Select, and got it working. Posting the code here for posterity/review. Thanks! 
#!/usr/bin/perl

use IO::Socket;
use IO::Select;

my $socket =new  IO::Socket::INET->new (
                LocalHost => "<ipaddress>",
                LocalPort => '<port>',
                Proto =>     'tcp',
                Listen => 1,
                Reuse => 1,
                );
die("Couldn't create socket! $!\n") unless $socket;
my $select = new IO::Select($socket);

while(@ready = $select->can_read) {
        foreach $fh (@ready) {
                if($fh == $socket) {
                        $new = $socket->accept;
                        $select->add($new);
                        my $host= $new->peerhost;
                        print "[Accepting connection from $host]\n";

                }
                else {
                        my $line = <$fh>;
                        $line =~ s/\s+$//;
                        if($line =~/^quit$/i) {
                                my $host = $fh->peerhost;
                                $select->remove($fh);
                                $fh->close;
                                print "[Connection from $host terminat
+ed\n";
                        }
                        else {
                                print $fh->peerhost, " said '$line'\n"
+;
                                print $fh "You said: '$line'\n";
                        }
                }
        }
}

[download]
Thanks for all the help! With multiple servers sending at the same time, it keeps track (using peerhost) which host sends the message, and of course the message contents.
/\ Sierpinski

In reply to Re^2: Can a socket listen for multiple hosts? -- UPDATE by sierpinski
in thread Can a socket listen for multiple hosts? by sierpinski

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.