CODEWITHSUNDEEP
javascriptgoogle-cloud-messagingweb-pushnode-gcm
James Walker
James Walker

Reputation: 403

Browser: Google Cloud Messaging/node-gcm - data is always null

Serverside code: 

var message = new gcm.Message({
    collapseKey: "demo",
    delayWhileIdle: true,
    timeToLive: 3,
    data: {
        test: 'value'
    }
});

var sender = new gcm.Sender(config.gcmKey);

var tokens = [];

... (to add tokens) ... 

sender.send(message, tokens, 3, function (err, res) { ... }

Clientside code (in a working serviceworker):

self.addEventListener('push', function(event) {
    console.log('Push message', event);
    var title = 'Push message';
    event.waitUntil(
        self.registration.showNotification(title, {
            body: 'Test',
            icon: 'img/icon.png',
        }));
});

(Everything is copied from readmes, tutorials and demos)

When I send the notification serverside, it displays on my screen as expected and with no errors. However, the console.log('Push message', event); outputs the event object with data: null. How can I get the test: 'value' key-value pair from the server? This is with the latest node-gcm and Chrome 52.

Upvotes: 0

Views: 276

Answers (1)

Marco Castelluccio
Marco Castelluccio

Reputation: 10802

The payload for web push notifications doesn't work the same way as it works for Android. It needs to be encrypted and sent in a different way.

You can use the web-push library for Node.js. It supports GCM for older Chrome versions, Web Push for Firefox and newer Chrome versions.

Upvotes: 1

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