NAME

       POE::Component::Connection::Keepalive - a wheel wrapper around a kept-alive socket

VERSION

       version 0.271

SYNOPSIS

         See the SYNOPSIS for POE::Component::Client::Keepalive for a
         complete working example.

         my $connection = $response->{connection};
         $heap->{connection} = $connection;

         $connection->start( InputEvent => "got_input" );

         delete $heap->{connection};  # When done with it.

DESCRIPTION

       POE::Component::Connection::Keepalive is a helper class for
       POE::Component::Client::Keepalive.  It wraps managed sockets, providing a few extra
       features.

       Connection objects free their underlying sockets when they are DESTROYed.  This eliminates
       the need to explicitly free sockets when you are done with them.

       Connection objects manage POE::Wheel::ReadWrite objects internally, saving a bit of
       effort.

       new
         Creates a new POE::Component::Connection::Keepalive instance.  It accepts two
         parameters: A socket handle (socket) and a reference to a
         POE::Component::Client::Keepalive object to manage the socket when the connection is
         destroyed.

           my $conn = POE::Component::Connection::Keepalive->new(
             socket  => $socket_handle,
             manager => $poe_component_client_keepalive,
           );

         new() is usually called by a POE::Component::Client::Keepalive object.

       start
         Starts a POE::Wheel::ReadWrite object.  All parameters except Handle for start() are
         passed directly to POE::Wheel::ReadWrite's constructor.  Handle is provided by the
         connection object.  start() returns a reference to the new POE::Wheel::ReadWrite object,
         but it is not necessary to save a copy of that wheel.  The connection object keeps a
         copy of the reference internally, so the wheel will persist as long as the connection
         does.  The POE::Wheel::ReadWrite object will be DESTROYed when the connection object is.

           # Asynchronous connection from Client::Keepalive.
           sub handle_connection {
             my $connection_info = $_[ARG0];
             $_[HEAP]->{connection} = $connection_info->{connection};

             $heap->{connection}->start(
               InputEvent => "got_input",
               ErrorEvent => "got_error",
             );
           }

           # Stop the connection (and the wheel) when an error occurs.
           sub handle_error {
             delete $_[HEAP]->{connection};
           }

       wheel
         Returns a reference to the internal POE::Wheel::ReadWrite object, so that methods may be
         called upon it.

           $heap->{connection}->wheel()->pause_input();

       close
         Closes the connection immediately. Calls shutdown_input() and shutdown_output() on the
         wheel also.

SEE ALSO

       POE POE::Component::Client::Keepalive POE::Wheel::ReadWrite

BUGS

       None known.

LICENSE

       This distribution is copyright 2004-2009 by Rocco Caputo.  All rights are reserved.  This
       distribution is free software; you may redistribute it and/or modify it under the same
       terms as Perl itself.

AUTHOR

       Rocco Caputo <rcaputo@cpan.org>

       Special thanks to Rob Bloodgood.