Swift_IoException

object(Swift_IoException)[491]
  protected 'message' => string 'Connection to localhost:25 Timed Out' (length=36)
  private 'string' (Exception) => string '' (length=0)
  protected 'code' => int 0
  protected 'file' => string '/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php' (length=106)
  protected 'line' => int 169
  private 'trace' (Exception) => 
    array (size=14)
      0 => 
        array (size=6)
          'file' => string '/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php' (length=115)
          'line' => int 400
          'function' => string 'readLine' (length=8)
          'class' => string 'Swift_Transport_StreamBuffer' (length=28)
          'type' => string '->' (length=2)
          'args' => 
            array (size=1)
              ...
      1 => 
        array (size=6)
          'file' => string '/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php' (length=115)
          'line' => int 291
          'function' => string '_getFullResponse' (length=16)
          'class' => string 'Swift_Transport_AbstractSmtpTransport' (length=37)
          'type' => string '->' (length=2)
          'args' => 
            array (size=1)
              ...
      2 => 
        array (size=6)
          'file' => string '/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php' (length=115)
          'line' => int 119
          'function' => string '_readGreeting' (length=13)
          'class' => string 'Swift_Transport_AbstractSmtpTransport' (length=37)
          'type' => string '->' (length=2)
          'args' => 
            array (size=0)
              ...
      3 => 
        array (size=6)
          'file' => string '/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/FailoverTransport.php' (length=111)
          'line' => int 56
          'function' => string 'start' (length=5)
          'class' => string 'Swift_Transport_AbstractSmtpTransport' (length=37)
          'type' => string '->' (length=2)
          'args' => 
            array (size=0)

    /** Get an entire multi-line response using its sequence number */
    protected function _getFullResponse($seq)
    {
        $response = '';
        try {
            do {
                $line = $this->_buffer->readLine($seq);
                $response .= $line;
            } while (null !== $line && false !== $line && ' ' != $line{3});
+        } catch (Swift_IoException $e) {
+            $this->_throwException(new Swift_TransportException($e->getMessage()));
        } catch (Swift_TransportException $e) {
            $this->_throwException($e);
        }