Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Unable to send Push Notification

See original GitHub issue

Hey @MartijnDwars, while sending the Notification I’m getting the following error:

the key in the authorization header does not correspond to the sender ID 
used to subscribe to this user. Please ensure you are using the correct sender 
ID and server Key from the Firebase console.

Getting the same error from curl request:

curl "https://fcm.googleapis.com/fcm/send/c9QOiG7bkdc:APA91bEwwW7Qt088axeqO0n0GVzDnVbu5oWGIy8R5YTbx2qYFAKs1iwL3w0F6zjHE8zGv1xX1WTUG0LTDq-I8Z1Zu5Su-CYnmW9yao7VKvca3KZJoxzsPM2riDsDAjCb9x6Gfr_i395J" 
--request POST --header "TTL: 60" --header "Content-Length: 0" \
 --header "Authorization: key=AAAAZod_va4:APA91bGa76B43GWRtECRmuLV6qOXjI9I_ulPrhp4oIZM91d4tfGSRPdrAWqko4_HRD0bzGKs-AN_AUerBxcKoz9IQ5uzkuVmRFOKmdy22D9Buq6LPOqOosIJ8GIdIblX2oY67p7jUcdG"

I’ve generated VAPID keys using npm module. These are the keys:

Public Key:
BNqEgHEqLOmF_B5rAkjwbFiTr6k5HzthWYul3UmorHOKXeXubI1D0oRw-nMN30ju6KTle2b_q9vNY1LAFtCz9B8

Private Key:
LwhPxh4pWvVQuSOHrLHIyY3qDWihyaLofzfoKPwLxjI

The subscription object looks like this:

{
"endpoint":"https://fcm.googleapis.com/fcm/send/c9QOiG7bkdc:APA91bEwwW7Qt088axeqO0n0GVzDnVbu5oWGIy8R5YTbx2qYFAKs1iwL3w0F6zjHE8zGv1xX1WTUG0LTDq-I8Z1Zu5Su-CYnmW9yao7VKvca3KZJoxzsPM2riDsDAjCb9x6Gfr_i395J",
"userPublicKey":"BDxcO0vK8HjrlGAOHhlCBj75G21uuRlc64WQU/lf1KOKMvZ175sLLcpEPjaln3QvJK9a5idKKegvSjPbslbd8XA=",
"userAuth":"OXde8QZMgpvnN+05Dljhgw=="
}

This is the code that I’m using for sending Push Notification:

nl.martijndwars.webpush.Notification notification;
WebSubscription sub = new WebSubscription();
sub.setEndpoint("https://fcm.googleapis.com/fcm/send/c9QOiG7bkdc:APA91bEwwW7Qt088axeqO0n0GVzDnVbu5oWGIy8R5YTbx2qYFAKs1iwL3w0F6zjHE8zGv1xX1WTUG0LTDq-I8Z1Zu5Su-CYnmW9yao7VKvca3KZJoxzsPM2riDsDAjCb9x6Gfr_i395J");
sub.setAuth("OXde8QZMgpvnN+05Dljhgw==");
sub.setKey("BDxcO0vK8HjrlGAOHhlCBj75G21uuRlc64WQU/lf1KOKMvZ175sLLcpEPjaln3QvJK9a5idKKegvSjPbslbd8XA=");
try {
    PushService pushService;
    notification = new nl.martijndwars.webpush.Notification(
            sub.getEndpoint(),
            sub.getUserPublicKey(),
            sub.getAuthAsBytes(),
            wpNotification.getAlert().getBytes(),
            255);

    // Instantiate the push service with a GCM API key
    pushService = new PushService("AIzaSyDpFKofoaa-VCFAJGYbK6QBfIRW5n2_j9o");
    pushService.setPrivateKey(nl.martijndwars.webpush.Utils.loadPrivateKey("LwhPxh4pWvVQuSOHrLHIyY3qDWihyaLofzfoKPwLxjI"));
    pushService.setPublicKey(nl.martijndwars.webpush.Utils.loadPublicKey("BNqEgHEqLOmF_B5rAkjwbFiTr6k5HzthWYul3UmorHOKXeXubI1D0oRw-nMN30ju6KTle2b_q9vNY1LAFtCz9B8"));
    HttpResponse httpResponse = pushService.send(notification);
    InputStream resInputStream = httpResponse.getEntity().getContent();
    StringWriter writer = new StringWriter();
    IOUtils.copy(resInputStream, writer, "UTF-8");
    String result = writer.toString();
    System.out.println(result);
} catch (Exception e) {
    LOG.error(sourceMethod, "Send Message failure...", e);
}

Am I using the keys wrong with Web-Push Library?

From the web-app, registration happens as follows:

const applicationServerPublicKey = "BNqEgHEqLOmF_B5rAkjwbFiTr6k5HzthWYul3UmorHOKXeXubI1D0oRw-nMN30ju6KTle2b_q9vNY1LAFtCz9B8";
const applicationServerKey = urlB64ToUint8Array(applicationServerPublicKey);
registration.pushManager.subscribe({
    userVisibleOnly: true,
    applicationServerKey: applicationServerKey
}).then(function(subscription) {
    return registerUsingToken(subscription);
}).catch(function(error) {
    if (Notification.permission === 'denied') {
    logger.info('Permission for Notifications was denied');
    } else {
    logger.error('Unable to subscribe to push.', error);
    }
});

Any help is appreciated, Thanks