Web Push Payload Encryption | Blog | Chrome for DevelopersPrior to Chrome 50, push messages could not contain any payload data. When the 'push' event fired in your service worker, all you knew was that the server was trying to tell you something, but not what it might be. You then had to make a follow up request to the server and obtain the details of the notification to show, which might fail in poor network conditions. Now in Chrome 50 (and in the curr
How to use service worker with FCM for Push Notifications
