Here you can easily test pushing data to browsers with Fastly Pub/Sub. This page connects to the service using the JavaScript EventSource API.

Initializing...

This page is using the following JavaScript to subscribe to events:

let es = new EventSource('https://pubsub-test.edgecompute.app/events?topic=test&auth={{ token }}');
es.addEventListener('message', function (event) {
    $('#output').text(event.data);
}, false);

And here's a curl command that you can use to publish on your own. It contains an authentication token that lasts for 1 hour:

curl -H "Authorization: Bearer {{ token }}" -d "hello world" https://pubsub-test.edgecompute.app/events?topic=test