Thanks for the replies. I'll try your suggestions. In the meantime, here is some example code illustrating what I am doing: 
use strict;
use threads;
use threads::shared;
use IO::Socket;

my $keep_running : shared = 1;

my $socket = IO::Socket::INET->new(PeerAddr => "127.0.0.1", PeerPort =
+> 8080, Type => SOCK_STREAM, Proto => 'tcp');

my $sender_thread = threads->new(\&do_send, $socket);
my $listener_thread = threads->new(\&do_listen, $socket);

$sender_thread->detach();
$listener_thread->join();

$socket->close();

sub do_listen {
    my $sock = shift;

    STDOUT->autoflush(1);
    
    while ($keep_running) {
        my $message = $sock->getline();
        last unless defined($message);
        print $message;
    }
}


sub do_send {
    my $sock = shift;
    
    while (my $line = <STDIN>) {
        $sock->print($line);
        $sock->flush();
    }

    $keep_running = 0;
}

[download]

In reply to Re^2: How to do simultaneous reads and writes to/from a socket? by sonofason
in thread How to do simultaneous reads and writes to/from a socket? by sonofason

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.