1.0.2 • Public • Published


    Join the chat at https://gitter.im/ToothlessGear/node-gcm npm

    The goal of this project is providing the best and most easily used interface for Firebase Cloud Messaging. (The name gcm comes from the older name for the service, Google Cloud Messaging.)

    By April 11, 2019 users must have migrated from GCM to FCM. If you are using this library, we've already got you covered on the server side (since version 0.14.1) --- just update to the most recent version and you are good.

    We appreciate all the help we can get! If you want to help out, check out the Guidelines for Contributing section.

    If you are developing an open-source project with a broader scope (like a full Firebase suite), we would love for you to use node-gcm internally.

    See the official FCM documentation for more information.

    We are currently working on version 2.0.0 of the project, and it is available in an early alpha version. Follow PR #238 to see current status.


    $ npm install node-gcm --save

    Note: This package requires Node v4.0 and newer.


    This library provides the server-side implementation of GCM. You need to generate an API Key.

    GCM notifications can be sent to both Android and iOS. If you are new to GCM you should probably look into the documentation.

    Example application

    According to below Usage reference, we could create such application:

    var gcm = require('node-gcm');
    // Set up the sender with your GCM/FCM API key (declare this once for multiple messages)
    var sender = new gcm.Sender('YOUR_API_KEY_HERE');
    // Prepare a message to be sent
    var message = new gcm.Message({
        data: { key1: 'msg1' }
    // Specify which registration IDs to deliver the message to
    var regTokens = ['YOUR_REG_TOKEN_HERE'];
    // Actually send the message
    sender.send(message, { registrationTokens: regTokens }, function (err, response) {
        if (err) console.error(err);
        else console.log(response);


    var gcm = require('node-gcm');
    // Create a message
    // ... with default values
    var message = new gcm.Message();
    // ... or some given values
    var message = new gcm.Message({
        collapseKey: 'demo',
        priority: 'high',
        contentAvailable: true,
        delayWhileIdle: true,
        timeToLive: 3,
        restrictedPackageName: "somePackageName",
        dryRun: true,
        data: {
            key1: 'message1',
            key2: 'message2'
        notification: {
            title: "Hello, World",
            icon: "ic_launcher",
            body: "This is a notification that will be displayed if your app is in the background."
    // Change the message data
    // ... as key-value
    // ... or as a data object (overwrites previous data object)
        key1: 'message1',
        key2: 'message2'
    // Set up the sender with you API key
    var sender = new gcm.Sender('insert Google Server API Key here');
    // Add the registration tokens of the devices you want to send to
    var registrationTokens = [];
    // Send the message
    // ... trying only once
    sender.sendNoRetry(message, { registrationTokens: registrationTokens }, function(err, response) {
      if(err) console.error(err);
      else    console.log(response);
    // ... or retrying
    sender.send(message, { registrationTokens: registrationTokens }, function (err, response) {
      if(err) console.error(err);
      else    console.log(response);
    // ... or retrying a specific number of times (10)
    sender.send(message, { registrationTokens: registrationTokens }, 10, function (err, response) {
      if(err) console.error(err);
      else    console.log(response);
    // Q: I need to remove all "bad" token from my database, how do I do that? 
    //    The results-array does not contain any tokens!
    // A: The array of tokens used for sending will match the array of results, so you can cross-check them.
    sender.send(message, { registrationTokens: registrationTokens }, function (err, response) {  
      var failed_tokens = response.results                           // Array with result for each token we messaged
        .map((res, i) => res.error ? registrationTokens[i] : null)   // If there's any kind of error, 
                                                                     // pick _the token_ from the _other_ array
        .filter(token => token);                                     // Remove all the null values
      console.log('These tokens are no longer ok:', failed_tokens);


    You can send push notifications to various recipient types by providing one of the following recipient keys:

    Key Type Description
    to String A single registration token, notification key, or topic.
    topic String A single publish/subscribe topic.
    condition String Multiple topics using the condition parameter.
    notificationKey String Deprecated. A key that groups multiple registration tokens linked to the same user.
    registrationIds String[] Deprecated. Use registrationTokens instead.
    registrationTokens String[] A list of registration tokens. Must contain at least 1 and at most 1000 registration tokens.

    If you provide an incorrect recipient key or object type, an Error object will be returned to your callback.

    Notice that you can at most send notifications to 1000 registration tokens at a time. This is due to a restriction on the side of the GCM API.

    Additional message options

    Parameter Usage Description
    collapseKey Optional, string This parameter identifies a group of messages that can be collapsed, so that only the last message gets sent when delivery can be resumed.
    priority Optional, string Sets the priority of the message. Valid values are "normal" and "high."
    contentAvailable Optional, JSON boolean On iOS, when a notification or message is sent and this is set to true, an inactive client app is awoken.
    timeToLive Optional, JSON number This parameter specifies how long (in seconds) the message should be kept in GCM storage if the device is offline. The maximum time to live supported is 4 weeks, and the default value is 4 weeks.
    restrictedPackageName Optional, string This parameter specifies the package name of the application where the registration tokens must match in order to receive the message.
    dryRun Optional, JSON boolean This parameter, when set to true, allows developers to test a request without actually sending a message.
    data Optional, JSON object This parameter specifies the custom key-value pairs of the message's payload.
    notification Optional, JSON object This parameter specifies the predefined, user-visible key-value pairs of the notification payload. See "Notification payload option table" below for more details.

    Notification usage

    var message = new gcm.Message();
    // Add notification payload as key value
    message.addNotification('title', 'Alert!!!');
    message.addNotification('body', 'Abnormal data access');
    message.addNotification('icon', 'ic_launcher');
    // as object
      title: 'Alert!!!',
      body: 'Abnormal data access',
      icon: 'ic_launcher'

    Note: Notifications sent using message.addNotification are only displayed when your app is in the background. Consider sending the notification parameters using message.addData and manually building and displaying a notification in your push receiver logic.

    Notification payload option table

    Parameter Platform Usage Description
    title Android, iOS (Watch) Required (Android), Optional (iOS), string Indicates notification title. This field is not visible on iOS phones and tablets.
    body Android, iOS Optional, string Indicates notification body text.
    icon Android Required, string Indicates notification icon. On Android: sets value to myicon for drawable resource myicon.png.
    sound Android, iOS Optional, string Indicates sound to be played. Supports only default currently.
    badge iOS Optional, string Indicates the badge on client app home icon.
    tag Android Optional, string Indicates whether each notification message results in a new entry on the notification center on Android. If not set, each request creates a new notification. If set, and a notification with the same tag is already being shown, the new notification replaces the existing one in notification center.
    color Android Optional, string Indicates color of the icon, expressed in #rrggbb format
    click_action Android, iOS Optional, string The action associated with a user click on the notification. On Android, if this is set, an activity with a matching intent filter is launched when user clicks the notification. For example, if one of your Activities includes the intent filter: (Appendix:1)Set click_action to OPEN_ACTIVITY_1 to open it. If set, corresponds to category in APNS payload.
    body_loc_key iOS Optional, string Indicates the key to the body string for localization. On iOS, this corresponds to "loc-key" in APNS payload.
    body_loc_args iOS Optional, JSON array as string Indicates the string value to replace format specifiers in body string for localization. On iOS, this corresponds to "loc-args" in APNS payload.
    title_loc_args iOS Optional, JSON array as string Indicates the string value to replace format specifiers in title string for localization. On iOS, this corresponds to "title-loc-args" in APNS payload.
    title_loc_key iOS Optional, string Indicates the key to the title string for localization. On iOS, this corresponds to "title-loc-key" in APNS payload.

    Notice notification payload defined in GCM Connection Server Reference

    Custom HTTP request options

    You can provide custom request options such as proxy and timeout for the HTTP request to the GCM API. For more information, refer to the complete list of request options. Note that the following options cannot be overriden: method, uri, body, as well as the following headers: Authorization, Content-Type, and Content-Length.

    // Set custom request options
    var requestOptions = {
        proxy: '',
        timeout: 5000
    // Set up the sender with your API key and request options
    var sender = new gcm.Sender('YOUR_API_KEY_HERE', requestOptions);
    // Prepare a GCM message...
    // Send it to GCM endpoint with modified request options
    sender.send(message, { registrationTokens: regTokens }, function (err, response) {
        if(err) console.error(err);
        else     console.log(response);

    GCM client compatibility

    As of January 9th, 2016, there are a few known compatibility issues with 3rd-party GCM client libraries:


    These issues are out of this project's context and can only be fixed by the respective 3rd-party project maintainers.


    To enable debug mode (print requests and responses to and from GCM), set the DEBUG environment flag when running your app (assuming you use node app.js to run your app):

    DEBUG=node-gcm node app.js


    Bitcoin: 13iTQf7tDhrKgibw2Y3U5SyPJa7R8sQmHQ


    npm i @parse/node-gcm

    DownloadsWeekly Downloads






    Unpacked Size

    39.4 kB

    Total Files


    Last publish


    • tom9856
    • parseadmin
    • mtrezza
    • dplewis
    • davimacedo