Is user logged into facebook

Still no joy. class names are correct. kunena is installed, but thought i'd change to what you suggested but still not working. Created a simpler plugin: would love to get users feedback if it works for them:
//xml
<?xml version="1.0" encoding="utf-8"?>
<extension version="1.0.0" type="plugin" group="socialprofiles" method="upgrade" client="site">
<name>Sonet Wifi Redir - jfbconnect</name>
<version>1.0.0</version>
<creationDate>06/10/2015</creationDate>
<author>Southamptonnetwork | www.southamptonnetwork.com
<authorEmail>This email address is being protected from spambots. You need JavaScript enabled to view it.
<authorUrl>www.southamptonnetwork.com
<copyright>Copyright (C) 2010-2015 southamptonnetwork. All rights reserved.</copyright>
<license>www.gnu.org/licenses/gpl-2.0.html GNU/GPL
<description>login detection for facebook and redirect to ap</description>
<files>
<filename plugin="sonetwifiredirtest">sonetwifiredirtest.php</filename>
</files>

<config>
<fields name="params">
<fieldset name="basic">
<field name="secretkey" type="text"
description="secret key needed to communicate with access point"
label="SOwifi Secret key"
size="40"
/>
</fieldset>
</fields>
</config>
</extension>
//end

//php code
/**
* @package JFBConnect
* @copyright (c) 2009-2014 by SourceCoast - All Rights Reserved
* @license www.gnu.org/licenses/gpl-2.0.html GNU/GPL
* @build-date 2014/07/14
*/

defined('_JEXEC') or die('Restricted access');

jimport('joomla.utilities.date');
jimport('sourcecoast.plugins.socialprofile');
jimport('sourcecoast.utilities');
//require_once JPATH_ROOT.DS.'components'.DS.'com_jfbconnect'.DS.'libraries'.DS.'facebook.php';


class plgSocialProfilesSonetWifiRedirTest extends SocialProfilePlugin
{
function __construct(&$subject, $params)
{
$this->_componentFolder = JPATH_SITE ;

parent::__construct($subject, $params);
//$this->defaultSettings->set('import_avatar', '1');
//$this->defaultSettings->set('import_always', '0');
}

/* After the user has logged in we then get the ball rolling
* 1st have the gets (ip/port/challenge) been sent if yes then.
* get secret key from param.
* get logged in users id
* then redir to ap with
*/
function onLogin() {
echo 'wtf';
JFactory::getApplication()->enqueueMessage(JText::_('sonet wifi test seems to be working'));
}
}
//end
sonetwifiredirtest.xml
sonetwifiredirtest.php

Thanks in advanced

Works in the constructor but nothing fires when in the onLogin.

finally narrowed down the problem.

Some mix up with importing profiles to the wrong user was to blame. When i deleted that user in jfbconnect component and logged back in again. the system message was displayed.

thank you for all your help!

last issue. Using:

$app->redirect(blabla.com);

takes me to a blank screen. how do you implement your redirect(what code do you use).

Many thanks

Got it.

Almost there now. Lastly how do i pass variables to jfbconnect login?

so user a lands on page index.php?abc=1&123=2

if a user then clicks on facebook login

index.php is sent to fb redirect but not the extra variables.

How can i get jfbconnect to keep the variables and send them back to the referring page?

thanks