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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Nucleus - XMPP Library for PHP  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Copyright (C) 2016, Some rights reserved.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Kacper "Kadet" Donat <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Contact with author:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Xmpp: [email protected]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * E-mail: [email protected]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * From Kadet with love.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Kadet\Xmpp\Component;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Kadet\Xmpp\Stanza\Iq;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Kadet\Xmpp\XmppClient;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use \Kadet\Xmpp\Utils\filter as with;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use React\EventLoop\Timer\TimerInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class PingKeepAlive extends Component  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /** @var float|int */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $_interval = 15;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /** @var TimerInterface */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $_timer;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $_handler = null;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * PingKeepAlive constructor.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param float|false $interval Keep alive interval in seconds or false to turn off  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function __construct($interval = 60.)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->_interval = $interval;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function setClient(XmppClient $client)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        parent::setClient($client);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->_client->on('state', [$this, 'enable'], \Kadet\Xmpp\Utils\filter\equals('ready')); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->_handler = $this->_client->on('iq', function(Iq $iq) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->handleIq($iq);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }, with\all(with\iq\query(with\element('ping', 'urn:xmpp:ping')), with\stanza\type('get'))); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Starts keep alive timer  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function enable()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if($this->_interval) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->_timer = $this->_client->connector->getLoop()->addPeriodicTimer($this->_interval, function() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $this->keepAlive();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            });  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Stops keep alive timer  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function disable()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if($this->_timer) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->_timer->cancel();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->_client->removeListener('iq', $this->_handler); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private function keepAlive()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $ping = new Iq('get', ['query' => new Iq\Query('urn:xmpp:ping', 'ping')]); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->_client->write($ping);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    private function handleIq(Iq $iq)  | 
            
            
                                                        
            
                                    
            
            
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                    { | 
            
            
                                                        
            
                                    
            
            
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                        $response = $iq->response();  | 
            
            
                                                        
            
                                    
            
            
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                        $response->type  = 'result';  | 
            
            
                                                        
            
                                    
            
            
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                        $response->query = new Iq\Query('urn:xmpp:ping', 'ping'); | 
            
            
                                                        
            
                                    
            
            
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                        $this->_client->write($response);  | 
            
            
                                                        
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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