notifier component's Texter::send() always returns NULL (no SentMessage-object response to see if the SMS has been sent)

Question

When using Symfony's notifier component to send an SMS via a custom SMS Service, the Texter::send()-method always returns NULL, which prevents me from seeing if the message has been sent or not.

Though the documentation (from v6.3 up to 7.2:) suggests to expect a SentMessage-object result:

 // TexterInterface $texter
 $sentMessage = $texter->send($sms);
 // ...

But when looking/debugging the actual Symfony\Component\Notifier\Texter-Class, the code looks like this:

 public function send(MessageInterface $message): ?SentMessage
 {
 if (null === $this->bus) {
 return $this->transport->send($message);
 }
 $this->dispatcher?->dispatch(new MessageEvent($message, true));
 $this->bus->dispatch($message);
 return null; // <--- Always returns NULL (the returned SentMessage-object is lost)
 }

Does anyone know the specifics behind the scenes of the Notifier-Component and how to retrieve back the actual SentMessage object?

I do indeed return the SentMessage-object in my Transport-class, but it goes lost in the specififed line.

How to know if the SMS has been sent?

Answer 1

The Texter::send() method returns null because it's dispatching the message asynchronously. To get the SentMessage object, you either have to force synchronous behavior by removing the message bus from your DSN (bad idea) or handle the SentMessageEvent asynchronously in an event listener or subscriber.