Swift_Transport_AbstractSmtpTransport::stop PHP Method

    public function stop()
    {
        if ($this->_started) {
            if ($evt = $this->_eventDispatcher->createTransportChangeEvent($this)) {
                $this->_eventDispatcher->dispatchEvent($evt, 'beforeTransportStopped');
                if ($evt->bubbleCancelled()) {
                    return;
                }
            }
            try {
                $this->executeCommand("QUIT\r\n", array(221));
            } catch (Swift_TransportException $e) {
            }
            try {
                $this->_buffer->terminate();
                if ($evt) {
                    $this->_eventDispatcher->dispatchEvent($evt, 'transportStopped');
                }
            } catch (Swift_TransportException $e) {
                $this->_throwException($e);
            }
        }
        $this->_started = false;
    }