Here's one for you. The first snippet is the server, the second one is the client.

#!c:/perl/bin/perl -w
$|++;

use strict;
use IO::Socket::INET;

# Initialize the server
my $sock = new IO::Socket::INET (
  LocalHost => '127.0.0.1',
  LocalPort => '7070',
  Proto     => 'tcp',
  Listen    => 1,
  ReuseAddr => 1
) or die "Server could not initialize!\n\n";

# Autoflush for verisons before 1.18
$sock->autoflush(1);

print "The server has successfully initialized.\n\n";

# Allow another client to connect after the
# current client disconnects from the server.
while ( my $new_sock = $sock->accept() ) {
  print "A client has connected to the server.\n";

  # Example output to the client
  for my $i (1 .. 5) {
    sleep 1;
    print $new_sock $i, "\n";
  }

  close $new_sock;
}
[download]

#!c:/perl/bin/perl -w
$|++;

use strict;
use IO::Socket::INET;

# Number of times to attempt a server connection
my $max_attempts = $ARGV[0] || 10000;

my $sock;
for my $i (1 .. $max_attempts) {
  $sock = IO::Socket::INET->new(
    PeerAddr => '127.0.0.1',
    PeerPort => '7070',
    Proto => 'tcp'
  );

  if (defined $sock) {
    print "Connection to server established.\n\n";
    last;
  } else {
    print "Attempt $i/$max_attempts failed.\n";
    die "Could not connect to the server.\n\n"
      if $i == $max_attempts;
  }

  sleep 2;
}

# Continually grab input from the server
my $byte;
print $byte while sysread($sock, $byte, 1);

close $sock;
[download]