Voice SDK v3.7.0 API Reference for Electron

This Agora Electron SDK is developed upon the Native SDK for macOS and the Native SDK for Windows, with the Node.js C++ plug-in units. The Electron SDK supports all the functions of the Agora Native SDK. Agora provides ensured quality of experience (QoE) for worldwide Internet-based voice and video communications through a virtual global network optimized on all platforms.

The AgoraRtcEngine class provides the main methods that can be invoked by your application.
The AgoraRtcEngine.on listens to events during runtime.
The AgoraRtcChannel class provides methods that enable real-time communications in a specified channel. By creating multiple AgoraRtcChannel objects, the user can join multiple channels.
The AgoraRtcChannel.on listens to events and statistics of a specified channel.

Methods

Channel management

Method	Description
initialize	Initializes an `AgoraRtcEngine` instance.
release	Releases an `AgoraRtcEngine` instance.
setChannelProfile	Sets the channel profile.
setClientRole	Sets the role of the user (interactive live streaming only).
setClientRoleWithOptions	Sets the role and level of the user (interactive live streaming only).
joinChannel	Allows a user to join a channel.
switchChannel	Switches to a different channel (interactive live streaming only).
leaveChannel	Allows a user to leave a channel.
subscribe	Subscribes to the remote user and initializes the video sink
renewToken	Renews the token.
getConnectionState	Gets the connection state of the app.
on	Monitors the events during `AgoraRtcEngine` runtime.
off	Stops monitoring the events during `AgoraRtcEngine` runtime.

Audio management

Method	Description
enableAudio	Enables the audio module.
disableAudio	Disables the audio module.
setAudioProfile	Sets the audio parameters and application scenarios.
adjustRecordingSignalVolume	Adjusts the volume of the signal captured by the microphone.
adjustLoopbackRecordingSignalVolume	Adjusts the volume of the signal captured by the sound card.
adjustPlaybackSignalVolume	Adjusts the playback volume of the voice.
adjustUserPlaybackSignalVolume	Adjusts the playback volume of a specified remote user.
enableLocalAudio	Enables/disables the local audio capture.
muteLocalAudioStream	Stops/Resumes sending the local audio stream.
muteRemoteAudioStream	Stops/Resumes receiving a specified remote audio stream.
muteAllRemoteAudioStreams	Stops/Resumes receiving all remote audio streams.
setDefaultMuteAllRemoteAudioStreams	Sets whether to receive all remote audio streams by default.

Video management

Method	Description
enableVideo	Enables the video module.
disableVideo	Disables the video module.
setVideoEncoderConfiguration	Sets the video encoder configuration.
setupLocalVideo	Sets the local video view.
setupViewContentMode	Sets the view content mode.
setRenderMode	Sets the view render mode.
startPreview	Starts the local video preview.
stopPreview	Stops the local video preview.
enableLocalVideo	Enables/Disables the local video capture.
muteLocalVideoStream	Stops/Resumes sending the local video stream.
muteRemoteVideoStream	Stops/Resumes receiving a specified remote video stream.
muteAllRemoteVideoStreams	Stops/Resumes receiving all remote video streams.
setDefaultMuteAllRemoteVideoStreams	Sets whether to receive all remote video streams by default.

Video sink

Method	Description
initRender	Initializes the video sink.
destroyRender	Destroys the video sink.
resizeRender	Resizes the rendered video.
setVideoRenderDimension	Ses the pixels the rendered video.
setVideoRenderFPS	Sets the frame rate of the rendered video.
setVideoRenderHighFPS	Sets the high frame rate of the rendered video.
addVideoRenderToHighFPS	Adds the rendered video with high frame rate.
removeVideoRenderFromHighFPS	Removes the rendered video with high frame rate.

Video pre-process and post-process

Method	Description
setBeautyEffectOptions	Sets the image enhancement options.
enableVirtualBackground	Enables/Disables the virtual background. (beta function)
setVideoDenoiserOptions	Sets video noise reduction.
setLowlightEnhanceOptions	Sets low-light enhancement.
setColorEnhanceOptions	Sets color enhancement.

Multiple channels management

API	Description
createChannel	Creates and gets an `AgoraRtcChannel` object.
AgoraRtcChannel	Provides methods that enable real-time communications in a specified channel.
AgoraRtcChannel.on	Provides callbacks that report events and statistics in a specified channel.

Screen sharing

Common methods	Description
getScreenDisplaysInfo	Gets the display ID.
getScreenWindowsInfo	Gets the window ID.
getScreenCaptureSources	Gets a list of shareable screens and windows (for macOS and Windows only).

Methods for the main process	Description
startScreenCaptureByDisplayId	Shares the whole or part of a screen by specifying the display ID (for macOS and Windows only).
startScreenCaptureByScreen	Shares the whole or part of a screen by specifying the screen symbol.
startScreenCaptureByWindow	Shares the whole or part of a window by specifying the window symbol.
stopScreenCapture	Stops screen sharing.
updateScreenCaptureParameters	Updates the screen sharing parameters.
setScreenCaptureContentHint	Sets the content hint for screen sharing.
setScreenCaptureScenario	Sets the screen sharing scenario (for macOS and Windows only).
updateScreenCaptureRegion	Updates the screen sharing region.

Methods for the second instance	Description
videoSourceStartScreenCaptureByScreen	Shares the whole or part of a screen by specifying the screen rect when using the video source.
videoSourceStartScreenCaptureByWindow	Shares the whole or part of a window by specifying the window ID when using the video source.
videoSourceSetVideoProfile	Sets the video profile for the video captured by the camera device.
stopScreenCapture2	Stops the screen sharing when using the video source.
startScreenCapturePreview	Starts the local video preview when using the video source.
stopScreenCapturePreview	Stops the local video preview when using the video source.
videoSourceUpdateScreenCaptureRegion	Updates the screen sharing region when using the video source.
videoSourceUpdateScreenCaptureParameters	Updates the screen sharing parameters when using the video source.
videoSourceSetScreenCaptureContentHint	Sets the content hint when using the video source.

Audio file playback and mixing

Method	Description
startAudioMixing	Starts playing and mixing the music file.
stopAudioMixing	Stops playing and mixing the music file.
pauseAudioMixing	Pauses playing and mixing the music file.
resumeAudioMixing	Resumes playing and mixing the music file.
adjustAudioMixingVolume	Adjusts the volume during audio mixing.
adjustAudioMixingPlayoutVolume	Adjusts the volume of audio mixing for local playback.
adjustAudioMixingPublishVolume	Adjusts the volume of audio mixing for remote playback.
setAudioMixingPitch	Sets the pitch of the local music file.
getAudioMixingPlayoutVolume	Adjusts the audio mixing volume for publishing (for remote users).
getAudioMixingPublishVolume	Retrieves the audio mixing volume for publishing.
getAudioMixingCurrentPosition	Gets the playback position (ms) of the music file.
setAudioMixingPosition	Sets the playback position of the music file.
getAudioTrackCount	Gets the audio track index of the current music file (for Android, iOS, and Windows only).
selectAudioTrack	Specifies the playback track of the current music file (for Android, iOS, and Windows only).
setAudioMixingPlaybackSpeed	Sets the playback speed of the current music file.
setAudioMixingDualMonoMode	Sets the channel mode of the current music file.

Audio effect playback

Method	Description
getEffectsVolume	Gets the volume of the audio effects.
setEffectsVolume	Sets the volume of the audio effects.
setVolumeOfEffect	Sets the volume of the audio effect.
playEffect	Plays a specified audio effect.
stopEffect	Stops playing a specified audio effect.
preloadEffect	Preloads a specified audio effect file into the memory.
unloadEffect	Releases a specified audio effect from the memory.
pauseEffect	Pauses a specified audio effect.
pauseAllEffects	Pauses all audio effects.
resumeEffect	Resumes playing a specified audio effect.
resumeAllEffects	Resumes playing all audio effects.
getEffectDuration	Gets the duration of the audio effect file.
setEffectPosition	Sets the playback position of an audio effect file.
getEffectCurrentPosition	Gets the playback position of the audio effect file.

Audio file information

Method	Description
getAudioFileInfo	Gets the information of a specified audio file.

Voice Effect

Method	Description
setLocalVoicePitch	Changes the voice pitch of the local speaker.
enableLocalVoicePitchCallback	Enables reporting the voice pitch of the local user.
setLocalVoiceEqualization	Sets the local video equalization effect.
setLocalVoiceReverb	Sets the local voice reverberation.
setVoiceBeautifierPreset	Sets an SDK preset voice beautifier effect.
setVoiceBeautifierParameters	Sets parameters for SDK preset voice beautifier effects.
setAudioEffectPreset	Sets an SDK preset audio effect.
setAudioEffectParameters	Sets parameters for SDK preset audio effects.
setVoiceConversionPreset	Sets an SDK preset voice conversion effect.

Sound position indication

Method	Description
enableSoundPositionIndication	Enables/Disables stereo panning for remote users.
setRemoteVoicePosition	Sets the sound position and gain of a remote user.

Media Push

This group of methods apply to Live Streaming only.

Method	Description
startRtmpStreamWithoutTranscoding	Starts pushing media streams to a CDN without transcoding.
startRtmpStreamWithTranscoding	Starts pushing media streams to a CDN and sets the transcoding configuration.
updateRtmpTranscoding	Updates the transcoding configuration.
stopRtmpStream	Stops pushing media streams to a CDN.
setLiveTranscoding	Sets the video layout and audio for CDN live.
addPublishStreamUrl	Adds a CDN stream address.
removePublishStreamUrl	Removes a CDN stream address.

Channel Media Relay

This group of methods apply to Live Streaming only.

Method	Description
startChannelMediaRelay	Starts to relay media streams across channels.
updateChannelMediaRelay	Updates the channels for media stream relay.
pauseAllChannelMediaRelay	Pauses the media stream relay to all destination channels.
resumeAllChannelMediaRelay	Resumes the media stream relay to all destination channels.
stopChannelMediaRelay	Stops the media stream relay.

Audio volume indication

Method	Description
enableAudioVolumeIndication	Reports on which users are speaking and the speakers' volume.

Dual video stream mode

Method	Description
enableDualStreamMode	Sets the stream mode to single-stream (default) or dual-stream mode.
setRemoteVideoStreamType	Sets the remote user’s video stream type received by the local user when the remote user sends dual streams.
setRemoteDefaultVideoStreamType	Sets the default video-stream type for the video received by the local user when the remote user sends dual streams.

Stream fallback

Method	Description
setLocalPublishFallbackOption	Sets the fallback option for the published video stream under unreliable network conditions.
setRemoteSubscribeFallbackOption	Sets the fallback option for the remote stream under unreliable network conditions.
setRemoteUserPriority	Prioritizes a remote user's stream.

Pre-call network test

Method	Description
startEchoTestWithInterval	Starts an audio call test.
startEchoTestWithConfig	Starts an audio and video call loop test.
stopEchoTest	Stops the audio call test.
enableLastmileTest	Enables the network connection quality test.
disableLastmileTest	Disables the network connection quality test.
startLastmileProbeTest	Starts the last-mile network probe test.
stopLastmileProbeTest	Stops the last-mile network probe test.

Media Metadata

Method	Description
registerMediaMetadataObserver	Registers a media metadata observer.
unRegisterMediaMetadataObserver	Unregisters a media metadata observer.
setMaxMetadataSize	Sets the maximum size of the media metadata.
sendMetadata	Sends the media metadata.

Watermark

This group of methods apply to Live Streaming only.

Method	Description
addVideoWatermark	Adds a watermark image to the local video.
clearVideoWatermarks	Removes the watermark image.

Video snapshot

Method	Description
takeSnapshot	Takes a snapshot of a video stream.

Encryption

Method	Description
enableEncryption	Enables/Disables the built-in encryption.

Audio recorder

Method	Description
startAudioRecordingWithConfig	Starts an audio recording on the client.
stopAudioRecording	Stops an audio recording on the client.

Audio playback device management

Method	Description
setAudioPlaybackDevice	Sets the audio playback device using the device ID.
getAudioPlaybackDevices	Gets the audio playback device using the device ID.
getPlaybackDeviceInfo	Gets the information of the audio playback device.
getCurrentAudioPlaybackDevice	Gets the current audio playback device.
getDefaultAudioPlaybackDevices	Gets the default audio playback device of the system.
followSystemPlaybackDevice	Sets the audio playback device used by the SDK to follow the system default audio playback device.
setAudioPlaybackDeviceMute	Mutes/Unmutes the audio playback device.
getAudioPlaybackDeviceMute	Gets the mute state of the audio playback device.
setAudioPlaybackVolume	Sets the volume of the audio playback device.
getAudioPlaybackVolume	Gets the volume of the audio playback device.
startAudioPlaybackDeviceTest	Starts the audio playback device test.
stopAudioPlaybackDeviceTest	Stops the audio playback device test.
startAudioDeviceLoopbackTest	Starts the audio device loopback test.
stopAudioDeviceLoopbackTest	Stops the audio device loopback test.

Audio recording device management

Method	Description
setAudioRecordingDevice	Sets the audio recording device using the device ID.
getAudioRecordingDevices	Gets the audio recording device using the device ID.
getRecordingDeviceInfo	Gets the information of the audio recording device.
getCurrentAudioRecordingDevice	Gets the current audio recording device.
getDefaultAudioRecordingDevices	Gets the default audio recording device of the system.
followSystemRecordingDevice	Sets the audio recording device used by the SDK to follow the system default audio recording device.
setAudioRecordingDeviceMute	Mutes/Unmutes the audio recording device.
getAudioRecordingDeviceMute	Gets the mute state of the audio recording device.
setAudioRecordingVolume	Sets the volume of the recording device.
getAudioRecordingVolume	Gets the volume of the recording device.
startAudioRecordingDeviceTest	Starts the recording device test.
stopAudioRecordingDeviceTest	Stops the recording device test.
startAudioDeviceLoopbackTest	Starts the audio device loopback test.
stopAudioDeviceLoopbackTest	Stops the audio device loopback test.

Video device management

Method	Description
setVideoDevice	Sets the device with the device ID.
getVideoDevices	Gets the video-capture device that is in use.
getCurrentVideoDevice	Gets the current video device.
startVideoDeviceTest	Starts the video playback device test.
stopVideoDeviceTest	Stops the video playback device test.

Stream message

Method	Description
createDataStreamWithConfi	Creates a data stream.
sendStreamMessage	Sends data stream messages.

Miscellaneous audio control

Method	Description
enableLoopbackRecording	Enables loopback recording.

Miscellaneous video control

Method	Description
setCameraCapturerConfiguration	Sets the camera capturer configuration.

Miscellaneous methods

Method	Description
setCloudProxy	Sets the Agora cloud proxy service.
enableDeepLearningDenoise	Enables/Disables deep-learning noise reduction.
sendCustomReportMessage	Reports and analyzes customized messages.
getCallId	Gets the current call ID.
rate	Allows the user to rate the call and is called after the call ends.
complain	Allows a user to complain about the call quality after a call ends.
getVersion	Gets the SDK version number.
getErrorDescription	Gets the warning or error description.

Customized methods

Method	Description
setParameters	Provides the technical preview functionalities or special customizations by configuring the SDK with JSON options.

Other methods for the second instance

Agora Electron SDK provides the second instance videoSource for screen sharing. For methods related to screen sharing, see Screen sharing.

Method	Description
videoSourceInitialize	Initializes the `videoSource` object.
videoSourceRelease	Releases the `videoSource` object.
videoSourceSetLogFile	Specifies an SDK output log file when using the video source.
setupLocalVideoSource	Sets the local video view of `videoSource`
videoSourceJoin	Allows `videoSource` to join a channel.
videoSourceLeave	Allows `videoSource` to leave a channel.
videoSourceSetChannelProfile	Sets the channel profile.
videoSourceRenewToken	Renews the Token when using the video source.
videoSourceEnableAudio	Enables the audio module.
videoSourceEnableLoopbackRecording	Enables loopback audio capturing.
videoSourceEnableEncryption	Enables/Disables the built-in encryption.
videoSourceSetParameters	Provides the technical preview functionalities or special customizations by configuring the SDK with JSON options when using the video source.

AgoraRtcEngine.on

Agora Electron SDK use the AgoraRtcEngine.on listens to the events above:

Event	Description
`warning`	Occurs when a warning occurs.
`error`	Occurs when an error occurs.
`joinedChannel`	Occurs when a user joins a channel.
`rejoinedChannel`	Occurs when a user rejoins a channel.
`leaveChannel`	Occurs when a user leaves a channel.
`clientRoleChanged`	Occurs when the user role in the live streaming changes.
`userJoined`	Occurs when a remote user joins a channel.
`connectionStateChanged`	Occurs when the network connection state changes.
`connectionLost`	Occurs when the network connection state changes.
`apiCallExecuted`	Occurs when an API method is executed.
`tokenPrivilegeWillExpire`	Occurs when the token expires in 30 seconds.
`requestChannelKey`	Occurs when the Channel Key expires.
`localUserRegistered`	Occurs when the local user successfully registers a user account.
`userInfoUpdated`	Occurs when the SDK gets the user ID and user account of the remote user.
`groupAudioVolumeIndication`	Occurs when the state of the microphone changes.
`activeSpeaker`	Reports which user is the loudest speaker.
`rtcStats`	Reports the statistics of AgoraRtcEngine.
`localVideoStats`	Reports the statistics of the uploading local video stream.
`remoteVideoStats`	Reports the statistics of the video stream from each remote user/host.
`localAudioStats`	Reports the statistics of the local audio stream.
`remoteAudioStats`	Reports the statistics of the audio stream from each remote user/host.
`audioMixingStateChanged`	Occurs when the state of the local user's audio mixing file changes.
`remoteAudioMixingBegin`	Occurs when a remote user starts audio mixing.
`remoteAudioMixingEnd`	Occurs when a remote user finishes audio mixing.
`audioEffectFinished`	Occurs when the audio effect file playback finishes.
`networkQuality`	Reports the network quality of each user.
`lastmileQuality`	Reports the last-mile network quality of the local user before the user joins a channel.
`lastmileProbeResult`	Reports the last-mile network probe result.
`firstLocalAudioFramePublished`	Occurs when the first audio frame is published.
`firstLocalVideoFramePublished`	Occurs when the first video frame is published.
`firstLocalVideoFrame`	Occurs when the first local video frame is rendered.
`videoSizeChanged`	Occurs when the video size or rotation information of a specified remote user changes.
`removeStream`	Occurs when the remote user leaves the channel.
`userMuteVideo`	Occurs when a remote user stops/resumes sending the video stream.
`cameraReady`	Occurs when the camera turns on and is ready to capture the video.
`videoStopped`	Occurs when the video stops playing.
`streamMessage`	Occurs when the local user receives a remote data stream within five seconds.
`streamMessageError`	Occurs when the local user fails to receive the remote data stream.
`rtmpStreamingStateChanged`	Occurs when the state of Media Push changes.
`transcodingUpdated`	Occurs when the publisher's transcoding is updated.
`rtmpStreamingEvent`	Reports events during Media Push.
`audioDeviceVolumeChanged`	Occurs when the volume of the playback, microphone, or application changes.
`localAudioStateChanged`	Occurs when the local audio state changes.
`remoteAudioStateChanged`	Occurs when the remote audio state changes.
`localVideoStateChanged`	Occurs when the local video state changes.
`remoteVideoStateChanged`	Occurs when the remote video stream state changes.
`audioPublishStateChanged`	Occurs when the audio publishing state changes.
`videoPublishStateChanged`	Occurs when the video publishing state changes.
`audioSubscribeStateChanged`	Occurs when the audio subscribing state changes.
`videoSubscribeStateChanged`	Occurs when the audio subscribing state changes.
`audioDeviceStateChanged`	Occurs when the audio device state changes.
`videoDeviceStateChanged`	Occurs when the video device state changes.
`cameraFocusAreaChanged`	Occurs when the camera focus area changes.
`cameraExposureAreaChanged`	Occurs when the camera exposure area changes.
`transcodingUpdated`	Occurs when the publisher's transcoding settings are updated.
`channelMediaRelayState`	Occurs when the state of the media stream relay changes.
`channelMediaRelayEvent`	Reports events during the media stream relay.
`localPublishFallbackToAudioOnly`	Occurs: When the published media stream falls back to an audio-only stream due to poor network conditions. When the published media stream switches back to the video after the network conditions improve.
`remoteSubscribeFallbackToAudioOnly`	Occurs: When the remote media stream falls back to audio-only due to poor network conditions. When the remote media stream switches back to the video after the network conditions improve.
`receiveMetadata`	Occurs when the receiver receives the media metadata.
`sendMetadataSuccess`	Occurs when the sender sends the media metadata successfully.
`videoSourceJoinedSuccess`	Occurs when a user joins a channel. (The second instance)
`videoSourceRequestNewToken`	Occurs when the token expires. (The second instance)
`videoSourceLeaveChannel`	Occurs when a user leaves a channel. (The second instance)
`videoSourceLocalAudioStats`	Reports the statistics of the local audio stream. (The second instance)
`videoSourceLocalVideoStats`	Reports the statistics of the uploading local video stream. (The second instance)
`videoSourceVideoSizeChanged`	Occurs when the video size or rotation information of a specified remote user changes. (The second instance)
`videoSourceLocalVideoStateChanged`	Occurs when the local video state changes. (The second instance)
`videoSourceLocalAudioStateChanged`	Occurs when the local audio state changes. (The second instance)
`requestAudioFileInfo`	Reports the information of an audio file.
`channelMediaRelayEvent`	Reports events during the media stream relay.
`snapshotTaken`	Reports the result of taking a video snapshot.

Warning codes

Warning codes occur when the SDK encounters an error that might be recovered automatically. These are only notifications, and can generally be ignored.

Warn Code	Description
`-8`	The specified view is invalid. Specify a view when using the video call function.
`-16`	Failed to initialize the video function, possibly caused by a lack of resources. The users cannot see the video while the voice communication is not affected.
`-20`	The request is pending, usually due to some module not being ready, and the SDK postponed processing the request.
`-103`	No channel resources are available. Maybe because the server cannot allocate any channel resource.
`-104`	A timeout occurs when looking up the channel. When joining a channel, the SDK looks up the specified channel. This warning usually occurs when the network condition is too poor for the SDK to connect to the server.
`-105`	DEPRECATED Please use `10` in `ConnectionChangeReason` instead. The server rejects the request to look up the channel. The server cannot process this request or the request is illegal.
`-106`	A timeout occurs when opening the channel. Once the specific channel is found, the SDK opens the channel. This warning usually occurs when the network condition is too poor for the SDK to connect to the server.
`-107`	The server rejects the request to open the channel. The server cannot process this request or the request is illegal.
`-111`	A timeout occurs when switching to the live video.
`-118`	A timeout occurs when setting the client role in the live streaming profile.
`-119`	The client role a the live streaming profile is unauthorized.
`-121`	The ticket to open the channel is invalid.
`-122`	Try connecting to another server.
`-131`	The channel connection cannot be recovered.
`-157`	The necessary dynamical library is not integrated. For example, if you call the enableDeepLearningDenoise but do not integrate the dynamical library for the deep-learning noise reduction into your project, the SDK reports this error code.
`-701`	An error occurs in opening the audio mixing file.
`-1014`	Audio Device Module: A warning occurs in the playback device.
`-1016`	Audio Device Module: A warning occurs in the recording device.
`-1019`	Audio Device Module: No valid audio data is collected.
`-1020`	Audio Device Module: The playback device fails.
`-1021`	Audio Device Module: The recording device fails.
`-1029`	During a call, the audio session category should be set to AVAudioSessionCategoryPlayAndRecord, and `AgoraRtcEngine` monitors this value. If the audio session category is set to other values, this warning code is triggered and `AgoraRtcEngine` will forcefully set it back to AVAudioSessionCategoryPlayAndRecord.
`-1025`	The audio recording or playback is interrupted by system events (such as a phone call).
`-1031`	Audio Device Module: The recorded audio voice is too low.
`-1032`	Audio Device Module: The playback audio voice is too low.
`-1040`	Audio device module: An exception occurs with the audio drive. Solutions: Disable or re-enable the audio device. Re-enable your device. Update the sound card drive.
`-1042`	Audio device module: The audio capturing device is different from the audio playback device, which may cause echoes problem. Agora recommends using the same audio device to capture and playback audio.
`-1051`	Audio Device Module: Howling is detected.
`-1052`	Audio Device Module: The device is in the glitch state.
`-1053`	Audio Device Module: A residual echo is detected. This may be caused by the delayed scheduling of system threads or a signal overflow.
`-1323`	Audio device module: No available playback device. Solution: Plug in the audio device.
`-1324`	Audio device module: The capture device is released improperly. Solutions: Disable or re-enable the audio device. Re-enable your device. Update the sound card drive.
`-1610`	Super-resolution warning: The original video dimensions of the remote user exceed 640 × 480.
`-1611`	Super-resolution warning: Another user is using super resolution.
`-1612`	The device is not supported.

Error codes

Error codes occur when the SDK encounters an error that cannot be recovered automatically without any application intervention. For example, the SDK returns an error if it fails to turn on the camera, and reminds the user not to use the camera.

Error Code	Description
`0`	No error occurs.
`-1`	A general error occurs (no specified reason).
`-2`	An invalid parameter is used. For example, the specific channel name includes illegal characters.
`-3`	The SDK module is not ready. Possible solutions: Check the audio device. Check the completeness of the application. Re-initialize the RTC engine.
`-4`	The SDK does not support this function.
`-5`	The request is rejected.
`-6`	The buffer size is not big enough to store the returned data.
`-7`	The SDK is not initialized before calling this method.
`-9`	No permission exists. Check if the user has granted access to the audio or video device.
`-10`	An API method timeout occurs. Some API methods require the SDK to return the execution result, and this error occurs if the request takes too long (more than 10 seconds) for the SDK to process.
`-11`	The request is canceled. This is for internal SDK use only, and it does not return to the application through any method or callback.
`-12`	The method is called too often. This is for internal SDK use only, and it does not return to the application through any method or callback.
`-13`	The SDK fails to bind to the network socket. This is for internal SDK use only, and it does not return to the application through any method or callback.
`-14`	The network is unavailable. This is for internal SDK use only, and it does not return to the application through any method or callback.
`-15`	No network buffers are available. This is for internal SDK internal use only, and it does not return to the application through any method or callback.
`-17`	The request to join the channel is rejected.This error usually occurs when the user is already in the channel, and still calls the `joinChannel` method to join the channel.
`-18`	The request to leave the channel is rejected.This error usually occurs: When the user has left the channel and still calls `leaveChannel` to leave the channel. In this case, stop calling `leaveChannel`. When the user has not joined the channel and still calls `leaveChannel` to leave the channel. In this case, no extra operation is needed.
`-19`	Resources are occupied and cannot be reused.
`-20`	The SDK gives up the request due to too many requests.
`-21`	In Windows, specific firewall settings can cause the SDK to fail to initialize and crash.
`-22`	The application uses too much of the system resources and the SDK fails to allocate the resources.
`-101`	The specified App ID is invalid. Please try to rejoin the channel with a valid App ID.
`-102`	The specified channel name is invalid. Please try to rejoin the channel with a valid channel name.
`-103`	`AgoraRtcEngine` fails to get server resources in the specified region. Try another region when initializing `AgoraRtcEngine`.
`-109`	DEPRECATED Please use `9` in `ConnectionChangeReason` instead. The token expired due to one of the following reasons: Authorized Timestamp expired: The timestamp is represented by the number of seconds elapsed since 1/1/1970. The user can use the Token to access the Agora service within 24 hours after the Token is generated. If the user does not access the Agora service after 24 hours, this Token is no longer valid. Call Expiration Timestamp expired: The timestamp is the exact time when a user can no longer use the Agora service (for example, when a user is forced to leave an ongoing call). When a value is set for the Call Expiration Timestamp, it does not mean that the token will expire, but that the user will be banned from the channel.
`-110`	DEPRECATED Please use `8` in `ConnectionChangeReason` instead. The token is invalid due to one of the following reasons: The App Certificate for the project is enabled in Console, but the user is still using the App ID. Once the App Certificate is enabled, the user must use a token. The uid is mandatory, and users must set the same uid as the one set in the `joinChannel` method.
`-113`	The user is not in the channel when calling the `sendStreamMessage` method.
`-114`	The size of the sent data is over 1024 bytes when the user calls the `sendStreamMessage` method.
`-115`	The bitrate of the sent data exceeds the limit of 6 Kbps when the user calls the `sendStreamMessage` method.
`-116`	Too many data streams (over 5 streams) are created when the user calls the `createDataStream` method.
`-117`	The data stream transmission timed out.
`-119`	Switching roles fail. Please try to rejoin the channel.
`-120`	Decryption fails. The user may have used a different encryption password to join the channel. Check your settings or try rejoining the channel.
`-123`	The client is banned by the server.
`-124`	Incorrect watermark file parameter.
`-125`	Incorrect watermark file path.
`-126`	Incorrect watermark file format.
`-127`	Incorrect watermark file information.
`-128`	Incorrect watermark file data format.
`-129`	An error occurs in reading the watermark file.
`-130`	Encryption is enabled when the user calls the `addPublishStreamUrl` method (Media Push does not support encrypted streams).
`-134`	The User Account is invalid.
`-151`	CDN related errors. Remove the original URL address and add a new one by calling the `removePublishStreamUrl` and `addPublishStreamUrl` methods.
`-152`	The host publishes more than 10 URLs. Delete the unnecessary URLs before adding new ones.
`-153`	The host manipulates other hosts' URLs. Check your app logic.
`-154`	An error occurs in Agora's streaming server. Call the `addPublishStreamUrl` method to publish the streaming again.
`-155`	The server fails to find the stream.
`-156`	The format of the RTMP stream URL is not supported. Check whether the URL format is correct.
`-160`	The client is already recording audio. To start a new recording, call `stopAudioRecording` to stop the current recording first, and then call `startAudioRecording`.
`-1001`	Fails to load the media engine.
`-1002`	Fails to start the call after enabling the media engine.
`-1003`	DEPRECATED Please use `error (4)` in `localVideoStateChanged` instead. Fails to start the camera.
`-1004`	Fails to start the video rendering module.
`-1005`	Audio Device Module: A general error occurs (no specified reason). Check if the audio device is used by another application, or try rejoining the channel.
`-1006`	Audio Device Module: An error occurs in using the Java resources.
`-1007`	Audio Device Module: An error occurs in setting the sampling frequency.
`-1008`	Audio Device Module: An error occurs in initializing the playback device.
`-1009`	Audio Device Module: An error occurs in starting the playback device.
`-1010`	Audio Device Module: An error occurs in stopping the playback device.
`-1011`	Audio Device Module: An error occurs in initializing the recording device.
`-1012`	Audio Device Module: An error occurs in starting the recording device.
`-1013`	Audio Device Module: An error occurs in stopping the recording device.
`-1015`	Audio Device Module: A playback error occurs. Check your playback device and try rejoining the channel.
`-1017`	Audio Device Module: A recording error occurs.
`-1018`	Audio Device Module: The recording fails.
`-1020`	Audio Device Module: Abnormal audio playback frequency.
`-1021`	Audio Device Module: Abnormal audio recording frequency.
`-1022`	Audio Device Module: An error occurs in initializing the loopback device.
`-1023`	Audio Device Module: An error occurs in starting the loopback device.
`-1027`	Audio Device Module: No recording permission exists. Check if the recording permission is granted.
`-1033`	Audio device module: The device is occupied.
`-1301`	Audio device module: An audio driver abnomality or a compatibility issue occurs. Solutions: Disable and restart the audio device, or reboot the device.
`-1303`	Audio device module: A recording driver abnomality or a compatibility issue occurs. Solutions: Disable and restart the audio device, or reboot the device.
`-1306`	Audio device module: A playout driver abnomality or a compatibility issue occurs. Solutions: Disable and restart the audio device, or reboot the device.
`-1307`	Audio device module: No audio device is available. Solutions: Plug in a proper audio device.
`-1309`	Audio device module: An audio driver abnomality or a compatibility issue occurs. Solutions: Disable and restart the audio device, or reboot the device.
`-1311`	Audio device module: Insufficient system memory or poor device performance. Solutions: Reboot the device or replace the device.
`-1314`	Audio device module: An audio driver abnormality occurs. Solutions: Disable and then re-enable the audio device. Reboot the device. Upgrade your audio card driver.
`-1319`	Audio device module: Insufficient system memory or poor device performance. Solutions: Reboot the device or replace the device.
`-1320`	Audio device module: An audio driver abnormality occurs. Solutions: Disable and then re-enable the audio device. Reboot the device. Replace the device.
`-1322`	Audio device module: No audio sampling device is available. Solutions: Plug in a proper recording device.
`-1323`	Audio device module: No audio playout device is available. Solutions: Plug in a proper playback device.
`-1351`	Audio device module: An audio driver abnormality or a compatibility issue occurs. Solutions: Disable and then re-enable the audio device. Reboot the device. Upgrade your audio card driver.
`-1353`	Audio device module: An audio driver abnormality occurs. Solutions: Disable and then re-enable the audio device. Reboot the device. Upgrade your audio card driver.
`-1354`	Audio device module: An audio driver abnormality occurs. Solutions: Disable and then re-enable the audio device. Reboot the device. Upgrade your audio card driver.
`-1355`	Audio device module: An audio driver abnormality occurs. Solutions: Disable and then re-enable the audio device. Reboot the device. Upgrade your audio card driver.
`-1356`	Audio device module: An audio driver abnormality occurs. Solutions: Disable and then re-enable the audio device. Reboot the device. Upgrade your audio card driver.
`-1357`	Audio device module: An audio driver abnormality occurs. Solutions: Disable and then re-enable the audio device. Reboot the device. Upgrade your audio card driver.
`-1358`	Audio device module: An audio driver abnormality occurs. Solutions: Disable and then re-enable the audio device. Reboot the device. Upgrade your audio card driver.
`-1359`	Audio Device Module: No recording device exists.
`-1360`	Audio Device Module: No playback device exists.
`-1501`	Video Device Module: The camera is unauthorized.
`-1502`	DEPRECATED Please use `error (3)` in `localVideoStateChanged` instead. Video Device Module: The camera is in use.
`-1600`	Video Device Module: An unknown error occurs.
`-1601`	Video Device Module: An error occurs in initializing the video encoder. The error is a serious error, please try to rejoin the channel.
`-1602`	Video Device Module: An error occurs in encoding. The error is a serious error, please try to rejoin the channel.
`-1603`	Video Device Module: An error occurs in setting the video encoder.