OK. I added the IO watch but it gets hung up for some reason and stops receiving data and does not finish logging in. I cant seem to see where the problem is so heres the code:

#!/usr/local/bin/perl -w
use strict;
use Gtk2 '-init';
use Glib qw/TRUE FALSE/;
use IO::Socket;

#-------------------Shared Variables-------------------
my $server = "irc.freenode.net";
my $nick = "simple_bot";
my $login = "simple_bot";
my $channel = "#GRRUVI";

#-------------------Main Loop-------------------
my $window = Gtk2::Window->new('toplevel');
$window->signal_connect( delete_event => sub {
    Gtk2->main_quit;
});

$window->set_default_size( 300, 200 );

my $table = Gtk2::Table->new(2, 1, FALSE);
my $scroller = Gtk2::ScrolledWindow->new;
my $textview = Gtk2::TextView->new;
my $entry = Gtk2::Entry->new;

$scroller->add($textview);

$table->attach_defaults($scroller, 0, 1, 0, 1);
$table->attach_defaults($entry, 0, 1, 1, 2);

$window->add($table);
$window->show_all;

# Connect to the IRC server.
my $sock = new IO::Socket::INET(
    PeerAddr => $server,
    PeerPort => 6667,
    Proto => 'tcp'
) or die "Can't connect\n";

Glib::IO->add_watch( fileno $sock, [qw/in hup err/], \&incoming_data, 
+$sock );


# Log on to the server.
print $sock "NICK $nick\r\n";
print $sock "USER $login 8 * :Perl IRC Hacks Robot\r\n";



Gtk2->main;

#-------------------Incoming data-------------------
sub incoming_data {

    my ( $fd, $condition, $fh ) = @_;
  
    if ( $condition eq 'in' ) {
        my $input = <$fh>;
        chop $input;
#          if ( defined $data ) {
#                  # do something useful with the text.
#                  my $buffer = $textview->get_buffer;
#                  $buffer->insert( $buffer->get_end_iter, $data );
#          }
        # Check the numerical responses from the server.
        if ($input =~ /004/) {
            # We are now logged in.
            # Join the channel.
            print $sock "JOIN $channel\r\n";
        }
        elsif ($input =~ /433/) {
            die "Nickname is already in use.";
        }
        elsif ($input =~ /^PING(.*)$/i) {
            # We must respond to PINGs to avoid being disconnected.
            print $sock "PONG $1\r\n";
        }
        else {
            # Print the raw line received by the bot.
            print "$input\n";
        }
    }
  
#    if ( $condition >= 'hup' or $condition >= 'err' ) {
        # End Of File, Hang UP, or ERRor.  that means
        # we're finished.
        
        # stop ability to send 
#        $entry->set_editable(0);
#        $entry->signal_handler_block ($send_sig);
        
#          my $buffer = $textview->get_buffer;
#          $buffer->insert( $buffer->get_end_iter, "Server connection 
+lost !!\n" );
    
          #close socket
#          $fh->close;
#          $fh = undef;
                
          #allow for new connection
        #$button->set_label('Connect');
        #$button->set_sensitive(1);
        #$button->grab_focus;
        #Gtk2->main_iteration while Gtk2->events_pending; 
#  }

#  if ($fh) {
          # the file handle is still open, so return TRUE to
          # stay installed and be called again.
          # print "still connected\n";
          # possibly have a "connection alive" indicator
#          return TRUE;
#  }
  
#  else {
          # we're finished with this job.  start another one,
          # if there are any, and uninstall ourselves. 
#          return FALSE;
#  }
}
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