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.\" ========================================================================
.\"
.IX Title "AnyEvent::IRC::Connection 3pm"
.TH AnyEvent::IRC::Connection 3pm "2011-12-01" "perl v5.20.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.SH "NAME"
AnyEvent::IRC::Connection \- An IRC connection abstraction
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\&   use AnyEvent;
\&   use AnyEvent::IRC::Connection;
\&
\&   my $c = AnyEvent\->condvar;
\&
\&   my $con = new AnyEvent::IRC::Connection;
\&
\&   $con\->connect ("localhost", 6667);
\&
\&   $con\->reg_cb (
\&      connect => sub {
\&         my ($con) = @_;
\&         $con\->send_msg (NICK => \*(Aqtestbot\*(Aq);
\&         $con\->send_msg (USER => \*(Aqtestbot\*(Aq, \*(Aq*\*(Aq, \*(Aq0\*(Aq, \*(Aqtestbot\*(Aq);
\&      },
\&      irc_001 => sub {
\&         my ($con) = @_;
\&         print "$_[1]\->{prefix} says I\*(Aqm in the IRC: $_[1]\->{params}\->[\-1]!\en";
\&         $c\->broadcast;
\&      }
\&   );
\&
\&   $c\->wait;
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
The connection class. Here the actual interesting stuff can be done,
such as sending and receiving \s-1IRC\s0 messages. And it also handles
\&\s-1TCP\s0 connecting and even enabling of \s-1TLS.\s0
.PP
Please note that \s-1CTCP\s0 support is available through the functions
\&\f(CW\*(C`encode_ctcp\*(C'\fR and \f(CW\*(C`decode_ctcp\*(C'\fR provided by AnyEvent::IRC::Util.
.SS "\s-1METHODS\s0"
.IX Subsection "METHODS"
.ie n .IP "$con = AnyEvent::IRC::Connection\->new ()" 4
.el .IP "\f(CW$con\fR = AnyEvent::IRC::Connection\->new ()" 4
.IX Item "$con = AnyEvent::IRC::Connection->new ()"
This constructor doesn't take any arguments.
.Sp
\&\fB\s-1NOTE:\s0\fR You are free to use the hash member \f(CW\*(C`heap\*(C'\fR (which contains a hash) to
store any associated data with this object. For example retry timers or
anything else.
.Sp
You can also access that member via the \f(CW\*(C`heap\*(C'\fR method.
.ie n .IP "$con\->connect ($host, $port [, $prepcb_or_timeout])" 4
.el .IP "\f(CW$con\fR\->connect ($host, \f(CW$port\fR [, \f(CW$prepcb_or_timeout\fR])" 4
.IX Item "$con->connect ($host, $port [, $prepcb_or_timeout])"
Tries to open a socket to the host \f(CW$host\fR and the port \f(CW$port\fR.
If an error occurred it will die (use eval to catch the exception).
.Sp
If you want to connect via \s-1TLS/SSL\s0 you have to call the \f(CW\*(C`enable_ssl\*(C'\fR
method before to enable it.
.Sp
\&\f(CW$prepcb_or_timeout\fR can either be a callback with the semantics of a prepare
callback for the function \f(CW\*(C`tcp_connect\*(C'\fR in AnyEvent::Socket or a simple
number which stands for a timeout.
.ie n .IP "$con\->enable_ssl ()" 4
.el .IP "\f(CW$con\fR\->enable_ssl ()" 4
.IX Item "$con->enable_ssl ()"
This method will enable \s-1SSL\s0 for new connections that are initiated by \f(CW\*(C`connect\*(C'\fR.
.ie n .IP "$con\->disconnect ($reason)" 4
.el .IP "\f(CW$con\fR\->disconnect ($reason)" 4
.IX Item "$con->disconnect ($reason)"
Unregisters the connection in the main AnyEvent::IRC object, closes
the sockets and send a 'disconnect' event with \f(CW$reason\fR as argument.
.ie n .IP "$con\->is_connected" 4
.el .IP "\f(CW$con\fR\->is_connected" 4
.IX Item "$con->is_connected"
Returns true when this connection is connected.
Otherwise false.
.ie n .IP "$con\->heap ()" 4
.el .IP "\f(CW$con\fR\->heap ()" 4
.IX Item "$con->heap ()"
Returns the hash reference stored in the \f(CW\*(C`heap\*(C'\fR member, that is local to this
connection object that lets you store any information you want.
.ie n .IP "$con\->send_raw ($ircline)" 4
.el .IP "\f(CW$con\fR\->send_raw ($ircline)" 4
.IX Item "$con->send_raw ($ircline)"
This method sends \f(CW$ircline\fR straight to the server without any
further processing done.
.ie n .IP "$con\->send_msg ($command, @params)" 4
.el .IP "\f(CW$con\fR\->send_msg ($command, \f(CW@params\fR)" 4
.IX Item "$con->send_msg ($command, @params)"
This function sends a message to the server. \f(CW@ircmsg\fR is the argument list
for \f(CW\*(C`AnyEvent::IRC::Util::mk_msg (undef, $command, @params)\*(C'\fR.
.SS "\s-1EVENTS\s0"
.IX Subsection "EVENTS"
Following events are emitted by this module and shouldn't be emitted
from a module user call to \f(CW\*(C`event\*(C'\fR. See also the documents Object::Event about
registering event callbacks.
.ie n .IP "connect => $error" 4
.el .IP "connect => \f(CW$error\fR" 4
.IX Item "connect => $error"
This event is generated when the socket was successfully connected
or an error occurred while connecting. The error is given as second
argument (\f(CW$error\fR) to the callback then.
.ie n .IP "disconnect => $reason" 4
.el .IP "disconnect => \f(CW$reason\fR" 4
.IX Item "disconnect => $reason"
This event will be generated if the connection is somehow terminated.
It will also be emitted when \f(CW\*(C`disconnect\*(C'\fR is called.
The second argument to the callback is \f(CW$reason\fR, a string that contains
a clue about why the connection terminated.
.Sp
If you want to reestablish a connection, call \f(CW\*(C`connect\*(C'\fR again.
.ie n .IP "send => $ircmsg" 4
.el .IP "send => \f(CW$ircmsg\fR" 4
.IX Item "send => $ircmsg"
Emitted when a message is about to be sent. \f(CW$ircmsg\fR is an array reference
to the arguments of \f(CW\*(C`mk_msg\*(C'\fR (see AnyEvent::IRC::Util). You
may modify the array reference to change the message or even intercept it
completely by calling \f(CW\*(C`stop_event\*(C'\fR (see Object::Event \s-1API\s0):
.Sp
.Vb 3
\&   $con\->reg_cb (
\&      send => sub {
\&         my ($con, $ircmsg) = @_;
\&
\&         if ($ircmsg\->[1] eq \*(AqNOTICE\*(Aq) {
\&            $con\->stop_event; # prevent any notices from being sent.
\&
\&         } elsif ($ircmsg\->[1] eq \*(AqPRIVMSG\*(Aq) {
\&            $ircmsg\->[\-1] =~ s/sex/XXX/i; # censor any outgoing private messages.
\&         }
\&      }
\&   );
.Ve
.ie n .IP "sent => @ircmsg" 4
.el .IP "sent => \f(CW@ircmsg\fR" 4
.IX Item "sent => @ircmsg"
Emitted when a message (\f(CW@ircmsg\fR) was sent to the server.
\&\f(CW@ircmsg\fR are the arguments to \f(CW\*(C`AnyEvent::IRC::Util::mk_msg\*(C'\fR.
.ie n .IP "irc_* => $msg" 4
.el .IP "irc_* => \f(CW$msg\fR" 4
.IX Item "irc_* => $msg"
.PD 0
.ie n .IP "irc_<lowercase command> => $msg" 4
.el .IP "irc_<lowercase command> => \f(CW$msg\fR" 4
.IX Item "irc_<lowercase command> => $msg"
.ie n .IP "read => $msg" 4
.el .IP "read => \f(CW$msg\fR" 4
.IX Item "read => $msg"
.PD
Emitted when a message (\f(CW$msg\fR) was read from the server.
\&\f(CW$msg\fR is the hash reference returned by \f(CW\*(C`AnyEvent::IRC::Util::parse_irc_msg\*(C'\fR;
.Sp
Note: '<lowercase command>' stands for the command of the message in
(\s-1ASCII\s0) lower case.
.IP "buffer_empty" 4
.IX Item "buffer_empty"
This event is emitted when the write buffer of the underlying connection
is empty and all data has been given to the kernel. See also \f(CW\*(C`samples/notify\*(C'\fR
about a usage example.
.Sp
Please note that this buffer is \s-1NOT\s0 the queue mentioned in AnyEvent::IRC::Client!
.SH "AUTHOR"
.IX Header "AUTHOR"
Robin Redeker, \f(CW\*(C`<elmex@ta\-sa.org>\*(C'\fR
.SH "SEE ALSO"
.IX Header "SEE ALSO"
AnyEvent::IRC
.PP
AnyEvent::IRC::Client
.SH "COPYRIGHT & LICENSE"
.IX Header "COPYRIGHT & LICENSE"
Copyright 2006\-2009 Robin Redeker, all rights reserved.
.PP
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.