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Class Session

Represents a video call. It can also be seen as a videoconference room where multiple users can connect. Participants who publish their videos to a session will be seen by the rest of users connected to that specific session. Initialized with OpenVidu.initSession method

Hierarchy

  • Session

Implements

Index

Properties

connection

connection: Connection

Local connection to the Session. This object is defined only after Session.connect has been successfully executed, and can be retrieved subscribing to connectionCreated event

sessionId

sessionId: string

Unique identifier of the Session. This is the same value you pass when calling OpenVidu.initSession

Methods

connect

  • connect(token: string): Promise<any>
  • connect(token: string, metadata: any): Promise<any>
  • Connects to the session using token. Parameter metadata allows you to pass extra data to share with other users when they receive streamCreated event. The structure of metadata string is up to you (maybe some standarized format as JSON or XML is a good idea), the only restriction is a maximum length of 10000 chars.

    This metadata is not considered secure, as it is generated in the client side. To pass securized data, add it as a parameter in the token generation operation (through the API REST, openvidu-java-client or openvidu-node-client).

    Only after the returned Promise is successfully resolved Session.connection object will be available and properly defined.

    Events dispatched

    The Session object of the local participant will first dispatch one or more connectionCreated events upon successful termination of this method:

    • First one for your own local Connection object, so you can retrieve Session.connection property.
    • Then one for each remote Connection previously connected to the Session, if any. Any other remote user connecting to the Session after you have successfully connected will also dispatch a connectionCreated event when they do so.

    The Session object of the local participant will also dispatch a streamCreated event for each remote active Publisher after dispatching all remote connectionCreated events.

    The Session object of every other participant connected to the session will dispatch a connectionCreated event.

    See ConnectionEvent and StreamEvent to learn more.

    Parameters

    • token: string

    Returns Promise<any>

    A Promise to which you must subscribe that is resolved if the recording successfully started and rejected with an Error object if not

  • Connects to the session using token. Parameter metadata allows you to pass extra data to share with other users when they receive streamCreated event. The structure of metadata string is up to you (maybe some standarized format as JSON or XML is a good idea), the only restriction is a maximum length of 10000 chars.

    This metadata is not considered secure, as it is generated in the client side. To pass securized data, add it as a parameter in the token generation operation (through the API REST, openvidu-java-client or openvidu-node-client).

    Only after the returned Promise is successfully resolved Session.connection object will be available and properly defined.

    Events dispatched

    The Session object of the local participant will first dispatch one or more connectionCreated events upon successful termination of this method:

    • First one for your own local Connection object, so you can retrieve Session.connection property.
    • Then one for each remote Connection previously connected to the Session, if any. Any other remote user connecting to the Session after you have successfully connected will also dispatch a connectionCreated event when they do so.

    The Session object of the local participant will also dispatch a streamCreated event for each remote active Publisher after dispatching all remote connectionCreated events.

    The Session object of every other participant connected to the session will dispatch a connectionCreated event.

    See ConnectionEvent and StreamEvent to learn more.

    Parameters

    • token: string
    • metadata: any

    Returns Promise<any>

    A Promise to which you must subscribe that is resolved if the recording successfully started and rejected with an Error object if not

disconnect

  • disconnect(): void
  • Leaves the session, destroying all streams and deleting the user as a participant.

    Events dispatched

    The Session object of the local participant will dispatch a sessionDisconnected event. This event will automatically unsubscribe the leaving participant from every Subscriber object of the session (this includes closing the WebRTCPeer connection and disposing all MediaStreamTracks) and also delete the HTML video element associated to it. Call event.preventDefault() to avoid this beahviour and take care of disposing and cleaning all the Subscriber objects yourself. See SessionDisconnectedEvent to learn more.

    The Publisher object of the local participant will dispatch a streamDestroyed event if there is a Publisher object publishing to the session. This event will automatically stop all media tracks and delete the HTML video element associated to it. Call event.preventDefault() if you want clean the Publisher object yourself or re-publish it in a different Session (to do so it is a mandatory requirement to call Session.unpublish() or/and Session.disconnect() in the previous session). See StreamEvent to learn more.

    The Session object of every other participant connected to the session will dispatch a streamDestroyed event if the disconnected participant was publishing. This event will automatically unsubscribe the Subscriber object from the session (this includes closing the WebRTCPeer connection and disposing all MediaStreamTracks) and delete the HTML video element associated to it. Call event.preventDefault() to avoid this default behaviour and take care of disposing and cleaning the Subscriber object yourself. See StreamEvent to learn more.

    The Session object of every other participant connected to the session will dispatch a connectionDestroyed event in any case. See ConnectionEvent to learn more.

    Returns void

off

  • off(type: string, handler?: function): Session

on

once

  • once(type: string, handler: function): Session

publish

  • publish(publisher: Publisher): Promise<any>
  • Publishes the participant's audio-video stream contained in publisher object to the session

    Events dispatched

    The local Publisher object will dispatch a streamCreated event upon successful termination of this method. See StreamEvent to learn more.

    The local Publisher object will dispatch a remoteVideoPlaying event only if Publisher.subscribeToRemote was called before this method, once the remote video starts playing. See VideoElementEvent to learn more.

    The Session object of every other participant connected to the session will dispatch a streamCreated event so they can subscribe to it. See StreamEvent to learn more.

    Parameters

    Returns Promise<any>

    A Promise (to which you can optionally subscribe to) that is resolved if the publisher was successfully published and rejected with an Error object if not

signal

  • Sends one signal. signal object has the following optional properties:

    {data:string, to:Connection[], type:string}
    

    All users subscribed to that signal (session.on('signal:type', ...) or session.on('signal', ...) for all signals) and whose Connection objects are in to array will receive it. Their local Session objects will dispatch a signal or signal:type event. See SignalEvent to learn more.

    Parameters

    Returns Promise<any>

    A Promise (to which you can optionally subscribe to) that is resolved if the message successfully reached openvidu-server and rejected with an Error object if not. This doesn't mean that openvidu-server could resend the message to all the listed receivers.

subscribe

  • Subscribes to a stream, adding a new HTML video element to DOM with subscriberProperties settings. This method is usually called in the callback of streamCreated event.

    Events dispatched

    The Subscriber object will dispatch a videoElementCreated event once the HTML video element has been added to DOM (if targetElement not null or undefined)

    The Subscriber object will dispatch a videoPlaying event once the remote video starts playing (only if videoElementCreated event has been previously dispatched)

    See VideoElementEvent to learn more.

    Parameters

    • stream: Stream

      Stream object to subscribe to

    • targetElement: string | HTMLElement

      HTML DOM element (or its id attribute) in which the video element of the Subscriber will be inserted (see SubscriberProperties.insertMode). If null or undefined no default video will be created for this Subscriber (you can always access the native MediaStream object by calling Subscriber.stream.getMediaStream() and use it as srcObject of any HTML video element)

    Returns Subscriber

  • Subscribes to a stream, adding a new HTML video element to DOM with subscriberProperties settings. This method is usually called in the callback of streamCreated event.

    Events dispatched

    The Subscriber object will dispatch a videoElementCreated event once the HTML video element has been added to DOM (if targetElement not null or undefined)

    The Subscriber object will dispatch a videoPlaying event once the remote video starts playing (only if videoElementCreated event has been previously dispatched)

    See VideoElementEvent to learn more.

    Parameters

    • stream: Stream

      Stream object to subscribe to

    • targetElement: string | HTMLElement

      HTML DOM element (or its id attribute) in which the video element of the Subscriber will be inserted (see SubscriberProperties.insertMode). If null or undefined no default video will be created for this Subscriber (you can always access the native MediaStream object by calling Subscriber.stream.getMediaStream() and use it as srcObject of any HTML video element)

    • properties: SubscriberProperties

    Returns Subscriber

  • Subscribes to a stream, adding a new HTML video element to DOM with subscriberProperties settings. This method is usually called in the callback of streamCreated event.

    Events dispatched

    The Subscriber object will dispatch a videoElementCreated event once the HTML video element has been added to DOM (if targetElement not null or undefined)

    The Subscriber object will dispatch a videoPlaying event once the remote video starts playing (only if videoElementCreated event has been previously dispatched)

    See VideoElementEvent to learn more.

    Parameters

    • stream: Stream

      Stream object to subscribe to

    • targetElement: string | HTMLElement

      HTML DOM element (or its id attribute) in which the video element of the Subscriber will be inserted (see SubscriberProperties.insertMode). If null or undefined no default video will be created for this Subscriber (you can always access the native MediaStream object by calling Subscriber.stream.getMediaStream() and use it as srcObject of any HTML video element)

    • completionHandler: function

      error parameter is null if subscribe succeeds, and is defined if it fails.

        • (error: Error | undefined): void
        • Parameters

          • error: Error | undefined

          Returns void

    Returns Subscriber

  • Subscribes to a stream, adding a new HTML video element to DOM with subscriberProperties settings. This method is usually called in the callback of streamCreated event.

    Events dispatched

    The Subscriber object will dispatch a videoElementCreated event once the HTML video element has been added to DOM (if targetElement not null or undefined)

    The Subscriber object will dispatch a videoPlaying event once the remote video starts playing (only if videoElementCreated event has been previously dispatched)

    See VideoElementEvent to learn more.

    Parameters

    • stream: Stream

      Stream object to subscribe to

    • targetElement: string | HTMLElement

      HTML DOM element (or its id attribute) in which the video element of the Subscriber will be inserted (see SubscriberProperties.insertMode). If null or undefined no default video will be created for this Subscriber (you can always access the native MediaStream object by calling Subscriber.stream.getMediaStream() and use it as srcObject of any HTML video element)

    • properties: SubscriberProperties
    • completionHandler: function

      error parameter is null if subscribe succeeds, and is defined if it fails.

        • (error: Error | undefined): void
        • Parameters

          • error: Error | undefined

          Returns void

    Returns Subscriber

subscribeAsync

unpublish

  • Unpublishes the participant's audio-video stream contained in publisher object.

    Events dispatched

    The Publisher object of the local participant will dispatch a streamDestroyed event. This event will automatically stop all media tracks and delete the HTML video element associated to it. Call event.preventDefault() if you want clean the Publisher object yourself or re-publish it in a different Session.

    The Session object of every other participant connected to the session will dispatch a streamDestroyed event. This event will automatically unsubscribe the Subscriber object from the session (this includes closing the WebRTCPeer connection and disposing all MediaStreamTracks) and delete the HTML video element associated to it. Call event.preventDefault() to avoid this default behaviour and take care of disposing and cleaning the Subscriber object yourself.

    See StreamEvent to learn more.

    Parameters

    Returns void

unsubscribe

  • Unsubscribes from subscriber, automatically removing its HTML video element.

    Events dispatched

    The Subscriber object will dispatch a videoElementDestroyed event (only if it previously dispatched a videoElementCreated event). See VideoElementEvent to learn more

    Parameters

    Returns void

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