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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                declare(strict_types=1);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Genkgo\Mail\Protocol\Smtp;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Genkgo\Mail\Exception\ConnectionTimeoutException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Genkgo\Mail\Exception\UnknownSmtpCommandException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Genkgo\Mail\Protocol\AppendCrlfConnection;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Genkgo\Mail\Protocol\ConnectionInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Genkgo\Mail\Protocol\ConnectionListenerInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Genkgo\Mail\Protocol\Smtp\Capability\EhloCapability;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Genkgo\Mail\Protocol\Smtp\Capability\QuitCapability;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Genkgo\Mail\Protocol\Smtp\Capability\ResetCapability;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Genkgo\Mail\Protocol\TrimCrlfConnection;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                final class Server  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var ConnectionListenerInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $listener;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var CapabilityInterface[]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $capabilities = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $serverName;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Client constructor.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param ConnectionListenerInterface $connection  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array $capabilities  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string $serverName  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function __construct(ConnectionListenerInterface $connection, array $capabilities, string $serverName) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->listener = $connection;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->serverName = $serverName;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->capabilities = array_merge(  | 
            
                            
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                            $capabilities,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                new EhloCapability($this->serverName, $capabilities),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                new QuitCapability(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                new ResetCapability()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function start(): void  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        while ($connection = $this->listener->listen()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $connection = new TrimCrlfConnection(new AppendCrlfConnection($connection));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $connection->send('220 Welcome to Genkgo Mail Server'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            try { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $session = new Session();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                while ($session = $session->withCommand($connection->receive())) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    try { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        $session = $this->handleCommand($connection, $session);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    } catch (UnknownSmtpCommandException $e) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        $connection->send('500 unrecognized command'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    if ($session->getState() === Session::STATE_DISCONNECT) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        break;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            } catch (ConnectionTimeoutException $e) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $connection->send('421 command timeout - closing connection'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $connection->disconnect();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param ConnectionInterface $connection  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param Session $session  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return Session  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws UnknownSmtpCommandException  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                        
            
                                    
            
            
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                    private function handleCommand(ConnectionInterface $connection, Session $session): Session  | 
            
            
                                                        
            
                                    
            
            
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                    { | 
            
            
                                                        
            
                                    
            
            
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                        $command = $session->getCommand();  | 
            
            
                                                        
            
                                    
            
            
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                        foreach ($this->capabilities as $capability) { | 
            
            
                                                        
            
                                    
            
            
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                            $advertised = $capability->advertise();  | 
            
            
                                                        
            
                                    
            
            
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                            if (substr($command, 0, strlen($advertised)) === $advertised) { | 
            
            
                                                        
            
                                    
            
            
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                                return $capability->manifest($connection, $session);  | 
            
            
                                                        
            
                                    
            
            
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                            }  | 
            
            
                                                        
            
                                    
            
            
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                        }  | 
            
            
                                                        
            
                                    
            
            
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                        throw new UnknownSmtpCommandException('Cannot handle command'); | 
            
            
                                                        
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                        
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..