Was mercure at least designed for multi-page sites (classic PHP/JS) ?

[abda11ah]

The more I learn about mercure, the more I get the impression that it wasn't designed for multi-page sites.

I use Dockge to see the mercure server logs in real time.

For about 1 month I've been struggling to get the basic functions and so far I've just managed to subscribe to a topic and to subscribe to the presence endpoint topic (.well-known/mercure/subscriptions/) of a user who owns the same topic. I see that the other user's status changes from active: true to active:false when he changes page.

And the server console tells me “Subscriber disconnected” and then “New subscriber” within a second, because he subscribes again each time he changes page. Which is problematic, I can't send a notification to say “your subscriber has just disconnected” when he's only changed page and subscriber id.

How do I know that this new subscriber-id corresponds to my PHP user_id?
Is it a good practice to store the php user_id in the topic?
Or all of this is just impossible since we lose the subscriber-id at each page change, i have to stay on a fullJS single page website ?