chrome.gcm

Description

Use chrome.gcm to enable apps and extensions to send and receive messages through Firebase Cloud Messaging (FCM).

Permissions

gcm

Properties

MAX_MESSAGE_SIZE

The maximum size (in bytes) of all key/value pairs in a message.

Value

4096

Methods

register()

Promise 
chrome.gcm.register(
  senderIds: string[],
  callback?: function,
)

Registers the application with FCM. The registration ID will be returned by the callback. If register is called again with the same list of senderIds, the same registration ID will be returned.

Parameters

  • senderIds

    string[]

    A list of server IDs that are allowed to send messages to the application. It should contain at least one and no more than 100 sender IDs.

  • callback

    function optional

    The callback parameter looks like: 

    (registrationId: string) => void

    • registrationId

      string

      A registration ID assigned to the application by the FCM.

Returns

  • Promise<string>

    Chrome 116+

    Promises are only supported for Manifest V3 and later, other platforms need to use callbacks.

send()

Promise 
chrome.gcm.send(
  message: object,
  callback?: function,
)

Sends a message according to its contents.

Parameters

  • message

    object

    A message to send to the other party via FCM.

    • data

      object

      Message data to send to the server. Case-insensitive goog. and google, as well as case-sensitive collapse_key are disallowed as key prefixes. Sum of all key/value pairs should not exceed gcm.MAX_MESSAGE_SIZE.

    • destinationId

      string

      The ID of the server to send the message to as assigned by Google API Console.

    • messageId

      string

      The ID of the message. It must be unique for each message in scope of the applications. See the Cloud Messaging documentation for advice for picking and handling an ID.

    • timeToLive

      number optional

      Time-to-live of the message in seconds. If it is not possible to send the message within that time, an onSendError event will be raised. A time-to-live of 0 indicates that the message should be sent immediately or fail if it's not possible. The default value of time-to-live is 86,400 seconds (1 day) and the maximum value is 2,419,200 seconds (28 days).

  • callback

    function optional

    The callback parameter looks like: 

    (messageId: string) => void

    • messageId

      string

      The ID of the message that the callback was issued for.

Returns

  • Promise<string>

    Chrome 116+

    Promises are only supported for Manifest V3 and later, other platforms need to use callbacks.

unregister()

Promise 
chrome.gcm.unregister(
  callback?: function,
)

Unregisters the application from FCM.

Parameters

  • callback

    function optional

    The callback parameter looks like: 

    () => void

Returns

  • Promise<void>

    Chrome 116+

    Promises are only supported for Manifest V3 and later, other platforms need to use callbacks.

Events

onMessage

chrome.gcm.onMessage.addListener(
  callback: function,
)

Fired when a message is received through FCM.

Parameters

  • callback

    function

    The callback parameter looks like: 

    (message: object) => void

    • message

      object

      • collapseKey

        string optional

        The collapse key of a message. See the Non-collapsible and collapsible messages for details.

      • data

        object

        The message data.

      • from

        string optional

        The sender who issued the message.

onMessagesDeleted

chrome.gcm.onMessagesDeleted.addListener(
  callback: function,
)

Fired when a FCM server had to delete messages sent by an app server to the application. See Lifetime of a message for details on handling this event.

Parameters

  • callback

    function

    The callback parameter looks like: 

    () => void

onSendError

chrome.gcm.onSendError.addListener(
  callback: function,
)

Fired when it was not possible to send a message to the FCM server.

Parameters

  • callback

    function

    The callback parameter looks like: 

    (error: object) => void

    • error

      object

      • details

        object

        Additional details related to the error, when available.

      • errorMessage

        string

        The error message describing the problem.

      • messageId

        string optional

        The ID of the message with this error, if error is related to a specific message.