Client | Agora Web SDK API Reference v2.5

The Client object returned by the createClient method provides access to much of the core AgoraRTC functionality.

Hierarchy

Client

Index

Methods

configPublisher

configPublisher(width: number, height: number, framerate: number, bitrate: number, publisherUrl: string): void

Configures the CDN Live Streaming

DEPRECATED

Agora recommends using the following methods instead:
This method configures the CDN live streaming before joining a channel.

Note:

Call configPublisher before Client.join.
example
Sample Code
```
client.configPublisher({
  width: 360,
  height: 640,
  framerate: 30,
  bitrate: 500,
  publishUrl: "rtmp://xxx/xxx/"
});
```
Parameters
- width: number
  
  Width of the output data stream set for CDN Live, 360 is the default value.
- height: number
  
  Height of the output data stream set for CDN Live, 640 is the default value.
- framerate: number
  
  Frame rate of the output data stream set for CDN Live, 15 fps is the default value.
- bitrate: number
  
  Bitrate of the output data stream set for CDN Live, 500 kbps is the default value.
- publisherUrl: string
  
  The push-stream address for the picture-in-picture layouts, null is the default value.
Returns void

disableDualStream

disableDualStream(onSuccess: function, onFailure: function): void

Disables Dual Streams

This method disables dual streams.
example
Sample Code
```
client.disableDualStream(function() {
  console.log("Disable dual stream success!")
}, function(err) {
  console.log(err)
})
```
Parameters
- onSuccess: function
  
  The callback when the method succeeds.
  - - (): void
    - Returns void
- onFailure: function
  
  The callback when the method fails.
  - - (err: any): void
    - Parameters
      - err: any
      Returns void
Returns void

enableAudioVolumeIndicator

enableAudioVolumeIndicator(): void

Enables Volume Indicator

This method enables the SDK to report the active remote users who are speaking and their volume regularly.

If this method is enabled, the SDK will return the volumes every two seconds, regardless of whether there are active speakers.

Note:
- If you have multiple web pages running the Web SDK, this function might not work.
example
Sample Code
```
client.enableAudioVolumeIndicator(); // Triggers the "volume-indicator" callback event every two seconds.
client.on("volume-indicator", function(evt){
    evt.attr.forEach(function(volume, index){
            console.log(#{index} UID ${volume.uid} Level ${volume.level});
    });
});
```
Returns void

enableDualStream

enableDualStream(onSuccess: function, onFailure: function): void

Enables Dual Stream

This method enables the dual-stream mode on the publisher side.

Dual streams are a hybrid of a high-video stream and a low-video stream:
- High-video stream: high bitrate, high resolution
- Low-video stream: low bitrate, low resolution
example
Sample Code
```
client.enableDualStream(function() {
  console.log("Enable dual stream success!")
}, function(err) {
  console,log(err)
})
```
Note:

This method does not apply to the following scenarios:
- Audio-only mode (audio: true, video: false)
- Safari browser on iOS
- Screen-sharing scenario
Parameters
- onSuccess: function
  
  The callback when the method succeeds.
  - - (): void
    - Returns void
- onFailure: function
  
  The callback when the method fails.
  - - (err: any): void
    - Parameters
      - err: any
      Returns void
Returns void

getCameras

getCameras(callback: function): void

Enumerates Video Input Devices

This method enumerates the available video input devices, such as cameras.

If this method succeeds, the SDK returns a list of video input devices in an array of MediaDeviceInfo objects.

Parameters
- callback: function
  - - (devices: MediaDeviceInfo): void
    - Parameters
      - devices: MediaDeviceInfo
      Returns void
Returns void

getLocalAudioStats

getLocalAudioStats(callback: function): void

Retrieves the Audio Statistics of the Local Stream

This method retrieves the audio statistics of the published stream，including audio codec type, sampling rate, bitrate, and so on.

Note:

Some of the statistics are calculated after the stream-published event, which may take at most 3 seconds.

Parameters
- callback: function
  
  The callback contains the statistics of the local audio stream.
  - - (stats: LocalAudioStatsMap): void
    - Parameters
      - stats: LocalAudioStatsMap
      Returns void
Returns void

getLocalVideoStats

getLocalVideoStats(callback: function): void

Retrieves the Video Statistics of the Local Stream

This method retrieves the video statistics of the published stream, including video resolution, bitrate, frame rate, and so on.

Note:

Some of the statistics are calculated after the stream-published event, which may take at most 3 seconds.

Parameters
- callback: function
  
  The callback contains the statistics of the local video stream.
  - - (stats: LocalVideoStatsMap): void
    - Parameters
      - stats: LocalVideoStatsMap
      Returns void
Returns void

getNetworkStats

getNetworkStats(callback: function): void

Gets the Statistics of the System Network

This method gets the statistics of the browser's local network.

Currently only the network type information is provided, see NetworkType.

Note:

Chrome 61+ is required for this function, and the compatibility is not guaranteed, see Network Information API for details.

Parameters
- callback: function
  
  The callback contains the statistics of the system network.
  - - (stats: NetworkStats): void
    - Parameters
      - stats: NetworkStats
      Returns void
Returns void

getPlayoutDevices

getPlayoutDevices(callback: function): void

Enumerates Audio Output Devices

This method enumerates the available audio output devices, such as speakers.

If this method succeeds, the SDK returns a list of audio output devices in an array of MediaDeviceInfo objects.

Parameters
- callback: function
  - - (devices: MediaDeviceInfo): void
    - Parameters
      - devices: MediaDeviceInfo
      Returns void
Returns void

getRecordingDevices

getRecordingDevices(callback: function): void

Enumerates Audio Input Devices

This method enumerates the available audio input devices, such as microphones.

If this method succeeds, the SDK returns a list of audio input devices in an array of MediaDeviceInfo objects.

Parameters
- callback: function
  - - (devices: MediaDeviceInfo): void
    - Parameters
      - devices: MediaDeviceInfo
      Returns void
Returns void

getRemoteAudioStats

getRemoteAudioStats(callback: function): void

Retrieves the Audio Statistics of the Remote Stream

This method retrieves the audio statistics of the remote stream, including audio codec type, packet loss rate, bitrate, and so on.

Note:

The statistics are calculated after the stream-subscribed event, which may take at most 3 seconds.

Parameters
- callback: function
  
  The callback contains the statistics of the remote audio stream.
  - - (stats: RemoteAudioStatsMap): void
    - Parameters
      - stats: RemoteAudioStatsMap
      Returns void
Returns void

getRemoteVideoStats

getRemoteVideoStats(callback: function): void

Retrieves the Video Statistics of the Remote Stream

This method retrieves the video statistics of the remote stream, including packet loss rate, video bitrate, frame rate, and so on.

Note:

The statistics are calculated after the stream-subscribed event, which may take at most 3 seconds.

Parameters
- callback: function
  
  The callback contains the statistics of the remote video stream.
  - - (stats: RemoteVideoStatsMap): void
    - Parameters
      - stats: RemoteVideoStatsMap
      Returns void
Returns void

getSystemStats

getSystemStats(callback: function): void

Gets the Statistics of the System

This method gets the statistics of the system.

Currently only the battery level information is provided, see BatteryLevel.

Note:

This feature is experimental, see Battery Status API for browser compatibility.

Parameters
- callback: function
  
  The callback contains the statistics of the system.
  - - (stats: SystemStats): void
    - Parameters
      - stats: SystemStats
      Returns void
Returns void

getTransportStats

getTransportStats(callback: function): void

Gets the Statistics of the Transmission

This method gets the statistics of the transmission quality to Agora service.

Note:

The statistics are calculated after the stream-published event, which may take at most 3 seconds.

Parameters
- callback: function
  
  The callback contains the statistics of the transmission quality.
  - - (stats: TransportStats): void
    - Parameters
      - stats: TransportStats
      Returns void
Returns void

init

init(appId: string, onSuccess: function, onFailure: function): void

Initializes a Client Object

This method initializes the client object.
example
Sample Code
```
client.init(appId, function() {
    console.log("client initialized");
    // Join a channel
    //……
}, function(err) {
    console.log("client init failed ", err);
    // Error handling
});
```
Parameters
- appId: string
  
  Pass in the App ID for your project. To get your App ID, see Get an App ID.
- onSuccess: function
  
  The callback when the method succeeds.
  - - (): void
    - Returns void
- onFailure: function
  
  The callback when the method fails.
  - - (err: string): void
    - Parameters
      - err: string
      Returns void
Returns void

join

join(tokenOrKey: string, channel: string, uid: number | string, onSuccess: function, onFailure: function): void

Joins an AgoraRTC Channel

This method joins an AgoraRTC channel.
example
Sample Code
```
client.join(<token>, "1024", null, function(uid) {
    console.log("client" + uid + "joined channel");
    // Create a local stream
    //……
}, function(err) {
    console.error("client join failed ", err);
    // Error handling
});
```
Parameters
- tokenOrKey: string
  - Low security requirements: Pass null as the parameter value.
  - High security requirements: Pass the string of the Token or Channel Key as the parameter value. See Use Security Keys for details.
- channel: string
  A string that provides a unique channel name for the Agora session. The length must be within 64 bytes. Supported character scopes are:
  - 26 lowercase English letters a-z
  - 26 uppercase English letters A-Z
  - 10 numbers 0-9
  - Space
  - "!", "#", "$", "%", "&", "(", ")", "+", "-", ":", ";", "<", "=", ".", ">", "?", "@", "[", "]", "^", "_", "{", "}", "|", "~", ","
- uid: number | string
  The user ID, a number or a string. Ensure this ID is unique. If you set the uid to null, the server assigns one and returns it in the onSuccess callback.
  
  Note:
  - All users in the same channel should have the same type (number or string) of uid.
  - If you use a number as the user ID, it should be a 32-bit unsigned integer with a value ranging from 1 to (2³²-1).
  - If you use a string as the user ID, the maximum length is 255 characters.
- onSuccess: function
  
  The callback when the method succeeds. The server returns the uid which represents the identity of the user.
  - - (uid: number | string): void
    - Parameters
      - uid: number | string
      Returns void
- onFailure: function
  
  The callback when the method fails.
  - - (err: any): void
    - Parameters
      - err: any
      Returns void
Returns void

leave

leave(onSuccess: function, onFailure: function): void

Leaves an AgoraRTC Channel

This method enables a user to leave a channel.
example
Sample Code
```
client.leave(function() {
    console.log("client leaves channel");
    //……
}, function(err) {
    console.log("client leave failed ", err);
    //error handling
});
```
Parameters
- onSuccess: function
  
  The callback when the method succeeds.
  - - (): void
    - Returns void
- onFailure: function
  
  The callback when the method fails.
  - - (err: any): void
    - Parameters
      - err: any
      Returns void
Returns void

on

on(event: "stream-published", callback: function): void
on(event: "stream-added", callback: function): void
on(event: "stream-removed", callback: function): void
on(event: "stream-subscribed", callback: function): void
on(event: "peer-leave", callback: function): void
on(event: "mute-audio", callback: function): void
on(event: "unmute-audio", callback: function): void
on(event: "mute-video", callback: function): void
on(event: "unmute-video", callback: function): void
on(event: "client-banned", callback: function): void
on(event: "active-speaker", callback: function): void
on(event: "volume-indicator", callback: function): void
on(event: "liveStreamingStarted", callback: function): void
on(event: "liveStreamingFailed", callback: function): void
on(event: "liveStreamingStopped", callback: function): void
on(event: "liveTranscodingUpdated", callback: function): void
on(event: "onTokenPrivilegeWillExpire", callback: function): void
on(event: "onTokenPrivilegeDidExpire", callback: function): void
on(event: "error", callback: function): void
on(event: "networkTypeChanged", callback: function): void
on(event: "recordingDeviceChanged", callback: function): void
on(event: "playoutDeviceChanged", callback: function): void
on(event: "cameraChanged", callback: function): void
on(event: "streamTypeChange", callback: function): void

This callback notifies the application that the local stream has been published.
example
Sample Code
```
client.on("stream-published", function(evt) {
    console.log("local stream published");
    //……
})
```
Parameters
- event: "stream-published"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void

This callback notifies the application that the remote stream has been added.

example

Sample Code

client.on("stream-added", function(evt) {
    var stream = evt.stream;
    console.log("new stream added ", stream.getId());
    // Subscribe the stream.
    //……
})

Parameters

event: "stream-added"
callback: function
- - (evt: any): void
  - Parameters
    - evt: any
    Returns void

Returns void

This callback notifies the application that the remote stream has been removed; for example, a peer user has called Client.unpublish.
example
Sample Code
```
client.on("stream-removed", function(evt) {
    var stream = evt.stream;
    console.log("remote stream was removed", stream.getId());
    //……
});
```
Parameters
- event: "stream-removed"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void
This callback notifies the application that a user has subscribed to a remote stream.
example
Sample Code
```
client.on("stream-subscribed", function(evt) {
    var stream = evt.stream;
    console.log("new stream subscribed ", stream.getId());
    // Play the stream.
    //……
})
```
Parameters
- event: "stream-subscribed"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void
This callback notifies the application that the peer user has left the channel; for example, the peer user has called Client.leave.
example
Sample Code
```
client.on("peer-leave", function(evt) {
    var uid = evt.uid;
    console.log("remote user left ", uid);
    //……
});
```
Parameters
- event: "peer-leave"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void
This callback notifies the application that the peer user has muted the audio.
example
Sample Code
```
client.on("mute-audio", function(evt) {
  var uid = evt.uid;
  console.log("mute audio:" + uid);
  //alert("mute audio:" + uid);
});
```
Parameters
- event: "mute-audio"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void
This callback notifies the application that the peer user has unmuted the audio.
example
Sample Code
```
client.on("unmute-audio", function (evt) {
  var uid = evt.uid;
  console.log("unmute audio:" + uid);
});
```
Parameters
- event: "unmute-audio"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void
This callback notifies the application that the peer user has turned off the video.
example
Sample Code
```
client.on("mute-video", function (evt) {
  var uid = evt.uid;
  console.log("mute video" + uid);
  //alert("mute video:" + uid);
})
```
Parameters
- event: "mute-video"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void
This callback notifies the application that the peer user has turned on the video.
example
Sample Code
```
client.on("unmute-video", function (evt) {
  var uid = evt.uid;
  console.log("unmute video:" + uid);
})
```
Parameters
- event: "unmute-video"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void
This callback notifies the peer user that he/she has been banned from the channel. Only the banned users receive this callback.
example
Sample Code
```
client.on("client-banned", function (evt) {
   var uid = evt.uid;
   var attr = evt.attr;
   console.log(" user banned:" + uid + ", banntype:" + attr);
   alert(" user banned:" + uid + ", banntype:" + attr);
});
```
Parameters
- event: "client-banned"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void
This callback notifies the application who is the active speaker in the channel.
example
Sample Code
```
client.on("active-speaker", function(evt) {
     var uid = evt.uid;
     console.log("update active speaker: client " + uid);
  });
```
Parameters
- event: "active-speaker"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void
This callback notifies the application of all the speaking remote users and their volumes.

It is disabled by default. You can enable this event by calling enableAudioVolumeIndicator. If enabled, it reports the volumes every two seconds regardless of whether there are users speaking.

The volume is an integer ranging from 0 to 100. Usually a user with volume above five will be counted as a speaking user.
example
Sample Code
```
client.on("volume-indicator", function(evt){
    evt.attr.forEach(function(volume, index){
    console.log(`#{index} UID ${volume.uid} Level ${volume.level}`);
  });
});
```
Parameters
- event: "volume-indicator"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void
This callback notifies the application that the live streaming has started.

Parameters
- event: "liveStreamingStarted"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void
This callback notifies the application that the live streaming has failed.

Parameters
- event: "liveStreamingFailed"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void
This callback notifies the application that the live streaming has stopped.

Parameters
- event: "liveStreamingStopped"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void
This callback notifies the application that the live transcoding setting has been updated.

Parameters
- event: "liveTranscodingUpdated"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void
This callback notifies the application that the Token will expire in 30 seconds.

You should request a new Token from your server and call Client.renewToken.
example
Sample Code
```
client.on("onTokenPrivilegeWillExpire", function(){
  //After requesting a new token
  client.renewToken(token);
});
```
Parameters
- event: "onTokenPrivilegeWillExpire"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void
This callback notifies the application that the Token has expired.

You should request a new Token from your server and call Client.renewToken.
example
Sample Code
```
client.on("onTokenPrivilegeDidExpire", function(){
  //After requesting a new token
  client.renewToken(token);
});
```
Parameters
- event: "onTokenPrivilegeDidExpire"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void
This callback notifies the application that an error message is reported and requires error handling.
example
Sample Code
```
client.on("error", function(err) {
    console.log("Got error msg:", err.reason);
  });
```
For details, see Error Codes and Warning Codes.
Parameters
- event: "error"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void
This callback notifies the application that the network type has changed.
example
Sample Code
```
client.on("networkTypeChanged", function(evt) {
    console.log("Network Type Changed to", evt.networkType);
  });
```
Note:

Chrome 61+ is required for this function, and the compatibility is not guaranteed, see Network Information API for details.
Parameters
- event: "networkTypeChanged"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void
This callback notifies the application that an audio input device has been added or removed.
example
Sample Code
```
client.on("recordingDeviceChanged", function(evt) {
    console.log("Recording Device Changed", evt.state, evt.device);
  });
```
Parameters
- event: "recordingDeviceChanged"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void
This callback notifies the application that an audio output device has been added or removed.
example
Sample Code
```
client.on("playoutDeviceChanged", function(evt) {
    console.log("Playout Device Changed", evt.state, evt.device);
  });
```
Note:

Only supports Chrome 49+.
Parameters
- event: "playoutDeviceChanged"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void
This callback notifies the application that a camera has been added or removed.
example
Sample Code
```
client.on("cameraChanged", function(evt) {
    console.log("Camera Changed", evt.state, evt.device);
  });
```
Parameters
- event: "cameraChanged"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void
This callback notifies the application that the type of a video stream has changed.

It happens when a high-video stream changes to a low-video stream, or vice versa.

The stream type (streamType):
- 0: High-bitrate, high-resolution video stream.
- 1: Low-bitrate, low-resolution video stream.
example
Sample Code
```
client.on("streamTypeChange", function(evt) {
    console.log("Stream Type Change", evt.uid, evt.streamType);
  });
```
Parameters
- event: "streamTypeChange"
- callback: function
  - - (evt: any): void
    - Parameters
      - evt: any
      Returns void
Returns void

publish

publish(stream: Stream, onFailure: function): void

Publishes a Local Stream

This method publishes a local stream to the SD-RTN.

Note:

In a live broadcast, whoever calls this API is the host.
example
Sample Code
```
client.publish(stream, function(err) {
    console.log(err);
    //……
})
```
Parameters
- stream: Stream
  
  Stream object, which represents the local stream.
- onFailure: function
  
  The callback when the method fails.
  - - (err: any): void
    - Parameters
      - err: any
      Returns void
Returns void

renewChannelKey

renewChannelKey(key: string, onSuccess: function, onFailure: function): void

Renews the Channel Key

This method renews your channel key.

Once the Channel Key schema is enabled, the key expires after a certain period of time. When the onFailure callback reports the error DYNAMIC_KEY_TIMEOUT, the application should renew the Channel Key by calling this method. Not doing so will result in SDK disconnecting with the server.

Parameters
- key: string
  
  Specifies the renewed Channel Key.
- onSuccess: function
  
  The callback when the method succeeds.
  - - (): void
    - Returns void
- onFailure: function
  
  The callback when the method fails.
  - - (err: any): void
    - Parameters
      - err: any
      Returns void
Returns void

renewToken

renewToken(token: string): void

Renews the Token

This method renews your token.

Once the Token schema is enabled, the token expires after a certain period of time. In case of the onTokenPrivilegeWillExpire or onTokenPrivilegeDidExpire callback events, the application should renew the Token by calling this method. Not doing so will result in SDK disconnecting with the server.

Parameters
- token: string
  
  Specifies the renewed Token.
Returns void

setEncryptionMode

setEncryptionMode(encryptionMode: "aes-128-xts" | "aes-256-xts" | "aes-128-ecb"): void

Sets the Encryption Mode

This method sets the encryption mode.

Note:

Ensure that you call this API before Client.join.

example

client.setEncryptionMode(encryptionMode);

Parameters
- encryptionMode: "aes-128-xts" | "aes-256-xts" | "aes-128-ecb"
  The encryption mode:
  - aes-128-xts: Sets the encryption mode as AES128XTS.
  - aes-256-xts: Sets the encryption mode as AES256XTS.
  - aes-128-ecb: Sets the encryption mode as AES128ECB.
Returns void

setEncryptionSecret

setEncryptionSecret(password: string): void

Enables Built-in Encryption

This method enables the built-in encryption.

Note:

Ensure that you call this API before Client.join.

example

client.setEncryptionSecret(password)

Parameters
- password: string
  
  The encryption password.
Returns void

setLiveTranscoding

setLiveTranscoding(coding: LiveTranscoding): void

Sets Live Transcoding

This method sets the video layout and audio for CDN live.

Note:

Call setLiveTranscoding after createStream. For details, see Push Streams to the CDN.

Parameters
- coding: LiveTranscoding
  
  Transcoding settings, see LiveTranscoding for details.
Returns void

setLowStreamParameter

setLowStreamParameter(param: object): void

Sets the Low-video Stream Parameter

If you enabled the dual-stream mode by calling Client.enableDualStream, use this method to set the low-video stream profile.

If you do not set the low-video stream profile, the SDK will assign default values based on your stream video profile.

Note:
- As different web browsers have different restrictions on the video profile, the parameters you set may fail to take effect. The Firefox browser has a fixed frame rate of 30 fps, therefore the frame rate settings do not work on the Firefox browser.
- Due to limitations of some devices and browsers, the resolution you set may fail to take effect and get adjusted by the browser. In this case, billings will be calculated based on the actual resolution.
- Call Client.join before using this method.
- Screen sharing supports the high-video stream only.
Parameters
- param: object
  
  Sets the video profile of the low-video stream.
  - bitrate: number
    
    Bitrate of the low-video stream frame in Kbps.
  - framerate: number
    
    Frame rate of the low-video stream frame in fps.
  - height: number
    
    Height of the low-video stream frame. The width and height parameters are bound together, and take effect only when both are set. Otherwise, the SDK will assign default values.
  - width: number
    
    Width of the low-video stream frame. The width and height parameters are bound together, and take effect only when both are set. Otherwise, the SDK will assign default values.
Returns void

setProxyServer

setProxyServer(proxyServer: string): void

Deploys the Nginx Server

Use this method to deploy the Nginx server.

Note:
- Ensure that you call this API before Client.join.
- Proxy services by different service providers may result in slow performance if you are using the Firefox browser. Therefore, Agora recommends using the same service provider for the proxy services. If you use different service providers, Agora recommends not using the Firefox browser.
example

client.setProxyServer(proxyServer);
Parameters
- proxyServer: string
  
  Your Nginx server domain name.
Returns void

setRemoteVideoStreamType

setRemoteVideoStreamType(stream: Stream, streamType: 0 | 1): void

Sets the Remote Video-stream Type

When a remote user sends dual streams, this method decides on which stream to receive on the subscriber side. If this method is not used, the subscriber receives the high-video stream.

example

Sample Code

switchStream = function (){
  if (highOrLow === 0) {
    highOrLow = 1
    console.log("Set to low");
  }
  else {
    highOrLow = 0
    console.log("Set to high");
  }

  client.setRemoteVideoStreamType(stream, hightOrLow);
}

Note:

As not all web browsers are compatible with dual streams, Agora does not recommend developers setting the resolution of the low-video stream.

Some web browsers may not be fully compatible with dual streams:

Browser	Possible problem
Safari on MacOS	A high-video stream and a low-video stream share the same frame rate and resolution.
Firefox	A low-video stream has a fixed frame rate of 30 fps.
Safari on iOS	Safari 11 does not support switching between the two video streams.

Parameters

stream: Stream

The remote video stream object.
streamType: 0 | 1
Sets the remote video stream type. The following lists the video-stream types:
- 0: High-bitrate, high-resolution video stream.
- 1: Low-bitrate, low-resolution video stream.

Returns void

setStreamFallbackOption

setStreamFallbackOption(stream: Stream, fallbackType: 0 | 1 | 2): void

Sets Stream Fallback Option

Use this method to set stream fallback option on the receiver.

Under poor network conditions, the SDK can choose to subscribe to the low-video stream or only the audio stream.

Note:

This method can only be used when the publisher has enabled the dual-stream mode by enableDualStream.

Parameters
- stream: Stream
  
  The remote stream object.
- fallbackType: 0 | 1 | 2
  The fallback option:
  - 0: Disable the fallback.
  - 1: (Default) Automatically subscribe to the low-video stream under poor network.
  - 2: Under poor network, the SDK may subscribe to the low-video stream (of lower resolution and lower bitrate) first, but if the network still does not allow displaying the video, the SDK will receive audio only.
Returns void

setTurnServer

setTurnServer(turnServer: object): void

Deploys the TURN Server

Use this method to deploy the TURN server.

Note:

Ensure that you call this API before Client.join.

example

client.setTurnServer(config);

Parameters
- turnServer: object
  
  The TURN server settings.
  - forceturn: boolean
    Sets whether to force data transfer by TURN Server:
    
    true: Force data transfer.
    
    false: (default) Not to force data transfer.
  - password: string
    
    Your TURN Server password.
  - Optional tcpport?: string
    
    The TCP port(s) you want add to TURN Server.
  - turnServerURL: string
    
    Your TURN Server URL address.
  - Optional udpport?: string
    
    The UDP port(s) you want to add to TURN Server.
  - username: string
    
    Your TURN Server username.
Returns void

startLiveStreaming

startLiveStreaming(url: string, enableTranscoding?: boolean): void

Starts a Live Stream

This method starts a live stream.
example
Sample Code
```
client.setLiveTranscoding(<coding>);
client.startLiveStreaming(<url>, true)
```
Note:

Call startLiveStreaming after createStream. For details, see Push Streams to the CDN.
Parameters
- url: string
  
  URL address for the live stream.
- Optional enableTranscoding: boolean
  
  Marks whether to enable live transcoding. If set as true, setLiveTranscoding must be called before this method.
Returns void

stopLiveStreaming

stopLiveStreaming(url: string): void

Stops Live Streaming

This method stops and deletes the live streaming.

Parameters
- url: string
  
  URL address of the live streaming.
Returns void

subscribe(stream: Stream, onFailure: function): void

Subscribes to a Remote Stream

This method enables a user to subscribe to a remote stream.
example
Sample Code
```
client.subscribe(stream, function(err) {
    console.error("stream subscribe failed", err);
    //……
})
```
Parameters
- stream: Stream
  
  Stream object, which represents the remote stream.
- onFailure: function
  
  The callback when the method fails.
  - - (err: any): void
    - Parameters
      - err: any
      Returns void
Returns void

unpublish

unpublish(stream: Stream, onFailure: function): void

Unpublishes the Local Stream

This method unpublishes the local stream.
example
Sample Code
```
client.unpublish(stream, function(err) {
    console.log(err);
    //……
})
```
Parameters
- stream: Stream
  
  Stream object, which represents the local stream.
- onFailure: function
  
  The callback when the method fails.
  - - (err: any): void
    - Parameters
      - err: any
      Returns void
Returns void

unsubscribe

unsubscribe(stream: Stream, onFailure: function): void

Unsubscribes from the Remote Stream

This method enables the user to unsubscribe from the remote stream.
example
Sample Code
```
client.unsubscribe(stream, function(err) {
    console.log(err);
    //……
})
```
Parameters
- stream: Stream
  
  Stream object, which represents the remote stream.
- onFailure: function
  
  The callback when the method fails.
  - - (err: any): void
    - Parameters
      - err: any
      Returns void
Returns void

Agora Web SDK API Reference

Hierarchy

Index

Methods

Methods

configPublisher

Parameters

width: number

height: number

framerate: number

bitrate: number

publisherUrl: string

Returns void

disableDualStream

Parameters

onSuccess: function

Returns void

onFailure: function

Parameters

err: any

Returns void

Returns void

enableAudioVolumeIndicator

Returns void

enableDualStream

Parameters

onSuccess: function

Returns void

onFailure: function

Parameters

err: any

Returns void

Returns void

getCameras

Parameters

callback: function

Parameters

devices: MediaDeviceInfo

Returns void

Returns void

getLocalAudioStats

Parameters

callback: function

Parameters

stats: LocalAudioStatsMap

Returns void

Returns void

getLocalVideoStats

Parameters

callback: function

Parameters

stats: LocalVideoStatsMap

Returns void

Returns void

getNetworkStats

Parameters

callback: function

Parameters

stats: NetworkStats

Returns void

Returns void

getPlayoutDevices

Parameters

callback: function

Parameters

devices: MediaDeviceInfo

Returns void

Returns void

getRecordingDevices

Parameters

callback: function

Parameters

devices: MediaDeviceInfo

Returns void

Returns void

getRemoteAudioStats

Parameters

callback: function

Parameters

stats: RemoteAudioStatsMap