webpush notifications expiration

Question

I want to implement push notifications to my website. I set up the service worker and the push api

navigator.serviceWorker.ready.then((serviceWorkerRegistration) => {
    serviceWorkerRegistration.pushManager
        .subscribe({
            userVisibleOnly: true,
            applicationServerKey: <vapidPublicKey>
        });
});

And I can receive the subscription ID through

serviceWorkerRegistration.pushManager.getSubscription()
.then((subscription) => {
    console.log(subscription);
});

If I want to host a custom server via VAPID and not use GCM (Google cloud messaging), I'm supposed to send the subscription object to my push server then use a webpush library to send the notification by supplying the subcription ID(s)

However, do the subscription IDs have an expiration, or does a subscription expire only when a user wants to unsubscribe?

Answer 1

I had the same issue and found that you can listen to the "pushsubscriptionchange" event which is fired when subscription expires. Subscribe again and register the new subscription in the server by sending a POST request with endpoint. Real world application would probably use also user identification.

Resource

Hope this help.