How to close Smtp connection in SwiftMailer

Question

I use SwiftMailer to send emails from a gearman worker process. I'm using the Swift_SmtpTransport class to send emails.

The problem is that if this worker process stays idle for sometime, the SwiftMailer smtp connection times out. Now when the next job arrives, SwiftMailer fails to send emails as the connection has been timed out.

Ideally, I would want to close the smtp connection after every job. I'm unable to locate a api in the class which does this specifically. Neither does unset() object works since this is a static class.

Answer 1

There is a rude option: stop the transport explicitly. On subsequent calls of the method sendMail, SwiftMailer will check whether the transport is up (it is not, now) and start it again. IMNSHO, SwiftMailer should intercept the SMTP timeout and reconnect automatically.But, for now, this is the workaround:

function sendMail($your_args) {
    try{ 
      $mailer = Swift_Mailer::newInstance($transport);
      $message = Swift_Message::newInstance('Wonderful Subject')
        ->setFrom(array('[email protected]' => 'John Doe'))
        ->setTo(array('[email protected]', '[email protected]' => 'A name'))
        ->setBody('Here is the message itself');

      $result = $mailer->send($message);
      $mailer->getTransport()->stop();

    } catch (Swift_TransportException $e) {
      //this should be caught to understand if the issue is on transport
    } catch (Exception $e) {
      //something else happened  
    }

}