fcm-v1-http2


Send multicast notifications using HTTP/2 multiplexing through the FCM HTTP v1 API.

Supported features:

- [X] HTTP/2 session & stream concurrency
- [X] Token batching support
- [X] Uninstall detection
- [X] Retry mechanism

Usage

First, install the package using npm:

``shell
npm install fcm-v1-http2 --save
`

Then, start using the package by importing and instantiating it:

`js
const fcmV1Http2 = require('fcm-v1-http2');

// Create a new client
const client = new fcmV1Http2({
// Pass in your service account JSON private key file (https://console.firebase.google.com/u/0/project/_/settings/serviceaccounts/adminsdk)
serviceAccount: require('./service-account.json'),
// Max number of concurrent HTTP/2 sessions (connections)
maxConcurrentConnections: 10,
// Max number of concurrent streams (requests) per session
maxConcurrentStreamsAllowed: 100
});

// Populate array with any number of FCM device tokens
const tokens = ['ccw_syAXSNOY9ml-Kqh9wo:APA91bHAEQccW1ZpbPvsGc0LFyjEthAt_GZO7HkBGiKounM................uIDEHijb4UR5f3dhyjhO5IbiWhJAA7RVp63KSFCg384PR7nfKADReWUONEJlCnHo15WwZagVTmFcgW'];

// Set FCM API v1 message params
// https://firebase.google.com/docs/reference/fcm/rest/v1/projects.messages#Message
const message = {
data: {
// Set custom payload
message: 'Hello World'
},
android: {
// Burst through Doze mode
priority: 'high'
}
};

// Send the notification
client.sendMulticast(message, tokens).then((unregisteredTokens) => {
// Sending successful
console.log('Message sent successfully');

// Remove unregistered tokens from your database
if (unregisteredTokens.length > 0) {
console.log('Unregistered device token(s): ', unregisteredTokens.join(', '));
}
}).catch((err) => {
// Sending failed
// Log error to console
console.error('Sending failed:', err);
});
``

Requirements

* Node.js v12 or newer

License

Apache 2.0