POE::Component::IRC::Cookbook::BasicBot - A basic IRC bot


This a very basic bot that connects to IRC, joins a few channels, and announces its arrival.


We start off quite simply:

 #!/usr/bin/env perl

 use strict;
 use warnings;

Then we use the stuff we're going to...well, use. ::State is a subclass which keeps track of state information related to channels and nicknames. It is needed by the AutoJoin plugin which takes care of keeping us on our channels.

 use POE;
 use POE::Component::IRC::State;
 use POE::Component::IRC::Plugin::AutoJoin;

Next up is our POE session. We create it and list our event handlers. We then start the POE kernel.

     package_states => [
         main => [ qw(_start irc_join) ]


Now all we have to do is write the handlers for _start and irc_join. In _start, we create our IRC component, add an AutoJoin plugin, register for the irc_join event, and connect to the IRC server.

 sub _start {
     my $irc = POE::Component::IRC::State->spawn(
         Nick   => 'basic_bot',
         Server => '',

     $irc->plugin_add('AutoJoin', POE::Component::IRC::Plugin::AutoJoin->new(
        Channels => [ '#test_channel1', '#test_channel2' ]

     $irc->yield(register => 'join');

Now comes our irc_join event handler. We send a message to the channel once we've joined it.

 sub irc_join {
     my $nick = (split /!/, $_[ARG0])[0];
     my $channel = $_[ARG1];
     my $irc = $_[SENDER]->get_heap();

     # only send the message if we were the one joining
     if ($nick eq $irc->nick_name()) {
         $irc->yield(privmsg => $channel, 'Hi everybody!');

That's it!


Hinrik Örn Sigurðsson,