Subscribe user with token

[ArensMyzyri]

Hi.
I have read through documentation and hitting a wall on understanding how to authenticate a subscriber to subscribe to a private topic.

Here my PHP part:

 $update = new Update(
                $message->getTopic()->getName(),
                $message->getTopic()->getData(),
                true
 );
            
 $this->publisher->publish($update);

The problem I have and that I can't understand is how can I add a token to this topic?
How to make it so the front end can subscribe if has this token.
I see no option above to create/update a topic with a dynamic token which the front end client can use together with the topic to subscribe.
Ex:
https://localhost/.well-known/mercure?topic=myTopicName
Authorization: "Bearer SomeToken"

Please let me know if I'm missing something.

[dunglas]

Can you share the topic you use (the string) and as well as the JWT?

[ArensMyzyri]

Hi there.

Subscribing using a token:

So here I create/update the topic:

If it has private: true, will never be received by the subscriber.

the token/key is the same for both publisher and subscriber.

JWT:
eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJtZXJjdXJlIjp7InB1Ymxpc2giOlsiYWRkUHJvZHVjdFRpdGxlIl19fQ.GB8yj7zhtYFw9-z94YGfQEGOqDdKMCqCb3E_7eYzTSU

[ArensMyzyri]

Oh made it work now :D
So, writing here, if anyone else might run into same trouble of understanding same as did I.

When you generate a token to send to the client in the front end, do this:

$token = JWT::encode([
                'mercure' => [
                    'subscribe' => ['myTopic'],
                ],
            ], 'mySecret');
            
             return $token

JWT::encode is from Firebase\JWT;

Then, this token need to be used in the Authorization with Bearer, or in the cookie.

PS. if you do:

JWT::encode([
              'mercure' => [
                  'publish' => ['myTopic'],
              ],
          ], 'mySecret');

then this token can be used to publish a topic.
Cheers :)