Meeting events

These events all happen during a meeting. They tend to be emitted as responses to either what a participant does in a meeting (like sending a message), or updates to the meeting itself (e.g. a live stream starts).


Emitted when the JavaScript bundle responsible for the call begins loading. This is the first event in the join() sequence (or the load() sequence, if you invoke that method directly).


Emitted when the JavaScript bundle responsible for the call has finished loading. This occurs right before the joining-meeting event in the join() sequence (or as the last step of the load() sequence, if you invoke that method directly).


Emitted when a single attempt at loading the JavaScript bundle responsible for the call has failed. A few attempts are made before loading is considered to have failed altogether (resulting in an error event).

A load-attempt-failed can happen during the join() sequence if a network error occurs, for example. It can also happen in the load() sequence, if you invoke that method directly.


Emitted when a participant's camera starts during call loading. This can happen as part of the standard onboarding flow, or when explicitly calling startCamera() for more granular control.


The details below only apply to react-native-daily-js versions 0.31.0 and up. For all older versions, look to the errorMsg field for information of the underlying error. Also note that errorMsg is still included and remains unchanged in the "camera-error" event payload for backwards compatibility, but should be considered deprecated as of 0.31.0.

Emitted when a camera error occurs. Details can be found in the error object included in the event payload. This object will always include type and msg. type categorizes the error into a general subset of issues (e.g. permissions vs missing device). msg is a human-readable message describing the specific error. Some types include extra information about the error.

For more information on working with device errors, check out our guide on handling device permissions.

The supported types are:

  • "not-found": camera and/or mic are not detected. Check the missingMedia field for which devices were not found.

  • "cam-in-use"/"mic-in-use"/"cam-mic-in-use": on Windows, the camera (and sometimes mic) cannot be accessed in multiple applications at once. When a device is inaccessible for this reason, we emit one of these error types depending on which devices are inaccessible.

  • "permissions": the user has blocked access to the camera and/or mic, or the browser itself has not been granted permissions. Check the blockedBy field to know whether it is due to "user" or "browser".

  • "constraints": getUserMedia() was provided with either invalid constraints or empty constraints. Check the reason field to know which one was the case.

  • "undefined-mediadevices": This indicates that window.navigator.mediaDevices is undefined and a getUserMedia() call is not possible. This most commonly is a result of accessing the call via a non-secure http url.

  • "unknown": While we have done our best to handle and normalize all possible errors across browsers and common device issues, we were unable to categorize this error. All unknown errors will be reported as this type. The original error thrown by getUserMedia() will be included in the msg string.


Triggered when the call is in the process of loading, meaning the join() method is called, and the call is connecting. This occurs after a loaded event in a successful join() sequence.

This event could be used to monitor whether a call is fully loaded in the console, or to hide certain displays while the participant is joining the meeting, among other things.


Emitted once the local participant has joined the call. At this point, the call is considered connected.

The joined-meeting event object returns the "action" type and information about the local participant who joined, like their "user_id", "audio", "video", and "screen" state, and any media stream tracks.

The participants list will only ever include the local participant. This is because the server sends participant information in batches of 50 after this initial joined event occurs. To get a participant count at join time, use the participantCounts() method. To get detailed participant information, listen for the participant-joined event, sent in conjunction with the batched updates.


Fires once the local participant has left the call. From the local user's perspective, this means the call has disconnected.

You could watch for this event to change the UI once a user has left a call, for example, changing a button that read "Leave call" to display "Join call" (we do something similar in our Daily Prebuilt demo).


Fires when destroy() has been called after all resources have been freed and isDestroyed() will return true.

You might watch for this event if you store the call instance in multiple places, to ensure all copies are reset.


A meeting session is a set of one or more people in a room together during a specific time window (learn more about meeting sessions.

'meeting-session-updated fires when the meeting session changes. One meeting session ends and another begins, for example, when you've been sitting alone in a room for 10 minutes.


The active-speaker-change event fires when the person currently talking has changed. While Active Speaker is only available for calls making use of Daily Prebuilt, you could still listen for active-speaker-change to build your own custom UI.

One use case would be to listen for it to alter the UI for the person currently speaking, or to temporarily mute other microphones.

Daily determines the active speaker based on whose audio input is currently the loudest. The active speaker is displayed prominently, while everyone else is displayed smaller. Active speaker mode only applies to the local participant, so changing the mode only changes the view locally.

Note: the peerId value is the same as the session_id in the participants object.


This event fires when accessState() has changed in some way—either the current access has changed (accessState().access) or an access request has been made or has been resolved (accessState().awaitingAccess).

Payload object:


The error event fires when an an unrecoverable call error, like a total disconnection, occurs.

The event's errorMsg property will contain a string with additional information. It can be useful to listen for and log error events for debugging and troubleshooting, for example.

If a call is in progress when the error is thrown, a left-meeting event should be emitted immediately after the error event.


Fires when media receive settings have changed (see updateReceiveSettings() for details). This occurs once upon join—at which point the base receive settings come in—and once each time receive settings are changed via a call to updateReceiveSettings().


Fires when video or custom track send settings have changed (see updateSendSettings() for details). This occurs once upon join() and once each time send settings are changed via a call to updateSendSettings().


"type": "live-streaming-warning"

Emits if there is an error during a live stream, such as when a user attempts to remove all live streams with removeLiveStreamingEndpoints().

"type": "local-audio-level-observer-error"

Fires if an error occurs while the local audio level observer is running.

"type": "meeting-session-data-error"

Fires when there’s been an error updating meeting session data (i.e. applying setMeetingSessionData()).

"type": "screen-share-error"

Emitted if there is an error when a participant begins a screen share.

In general, a "screen-share-error" event is emitted with two root causes:

  1. The user has not permitted:
    • When asking for screen sharing, in both Android and iOS, a system UI will pop up, asking the user to authorize.
    • On iOS, even if the user denies, we are not emitting an error; the screen share is just not starting in this case.
  2. The user has invoked the start of the screen share, but the screen is already being captured.


Fires when anything in meetingSessionState() changes, which includes anything set via setMeetingSessionData() and information about the meeting session, like network topology (e.g. 'sfu' or 'peer').


Fires when the local screen share has started.


Fires when the local screen share has stopped.


Event containing the local participant latest audio level information.

Fires based on the frequency specified when starting the local audio level observer.


Event containing the remote participants latest audio level information.

Fires based on the frequency specified when starting the remote participants audio level observer.