TKRoomSDK event description

• TKRoomSDK event description

TKRoomSDK event description

Mount the listener

• The room event listener needs to be mounted on the room instance. You can customize an event dispatcher to forward events

const room = TK.Room()
const dispatcher = TK.EventDispatcher()
function registerRoomEvent() {
  room.addEventListener(event, (recvEventData) => {
      dispatcher.dispatchEvent(recvEventData, false)
  })
}
registerRoomEvent()

Joined the room successfully（TK.EVENT_TYPE.roomConnected）

• This event is dispatched when the current user successfully enters the room. You can use this event to determine the user's connection status
• Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.roomConnected
message	Array	The signaling messages currently existing in the room (messages published and saved via pubMsg)
isReconnect	Boolean	Whether it is a reconnection to the room

• Code example

const onRoomConnectSuccess = data => {
    console.log("room event type: ", data.type);
    console.log("connect success data: ", data.message);
    alert("Succeed in joining the room")
}
dispatcher.addEventListener(TK.EVENT_TYPE.roomConnected, onRoomConnectSuccess)

Failed to join the room（TK.EVENT_TYPE.roomConnectFail）

• This event is dispatched when the current user fails to enter the room. You can use this event to determine the user's connection status

• Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.roomConnectFail
message	Object	source: Indicates which step of the join room operation has been reached.error: The reason for the error. Possible status code values can be found in the global error codes

• Code example

const onRoomConnectFailed = data => {
    console.log("room event type: ", data.type);
    console.log("connect fail source: ", data.message.source);
    console.log("connect fail error: ", data.message.error);
    alert("Fail to join the room")
    }
    dispatcher.addEventListener(TK.EVENT_TYPE.roomConnectFail , onRoomConnectFailed)

Room connection interrupted（TK.EVENT_TYPE.roomDisconnected）

• This event is dispatched when the connection to the current room is interrupted. Possible reasons include network disconnection, network jitter, or a weak network environment. You can listen to this event to provide corresponding prompts
• When the room connection is interrupted, the SDK will automatically attempt to reconnect internally Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.roomDisconnected

• Code example

  const onRoomDisconnect = data => {
    console.log("room event type: ", data.type);
    alert("Network jitter, reconnecting...")
}
dispatcher.addEventListener(TK.EVENT_TYPE.roomDisconnected , onRoomDisconnect)

Leave the room（TK.EVENT_TYPE.roomLeaveRoom）

• This event is dispatched when the current user successfully leaves the room. At this point, the user's connection has been disconnected. You can listen to this event to perform some cleanup tasks
• Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.roomLeaveRoom

• Code example

  const onRoomLeaveRoom = data => {
    console.log("room event type: ", data.type);
    alert("The current user has exited the classroom")
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomLeaveRoom , onRoomLeaveRoom)

User joined the room（TK.EVENT_TYPE.roomParticipantJoin）

• This event is dispatched when other users successfully join the room (rules may differ in large-scale rooms). You can listen to this event to notify users of their successful entry
• Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.roomParticipantJoin
user	Object	User information of the person joining the room

• Code example

  const onRoomUserJoin = data => {
    console.log("room event type: ", data.type);
    console.log("user join info: ", data.user)
    alert(data.user.nickname + "Joined the room")
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomParticipantJoin , onRoomUserJoin)

User left the room（TK.EVENT_TYPE.roomParticipantLeave）

• This event is dispatched when other users successfully leave the room (rules may differ in large-scale rooms). You can listen to this event to notify users of their departure
• Event data:

Parameter name	Type	Description
type	String	Event name:TK.EVENT_TYPE.roomParticipantLeave
user	Object	User information of the person leaving the room

• Code example

  const onRoomUserLeave = data => {
    console.log("room event type: ", data.type);
    console.log("user leave info: ", data.user)
    alert(data.user.nickname + "Left the room")
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomParticipantLeave , onRoomUserLeave)

The user was kicked out of the room（TK.EVENT_TYPE.roomParticipantEvicted）

• This event is dispatched when a user is kicked out of the room. Only the user who is kicked out will receive this event. You can listen to this event to provide relevant notifications
• In some cases, the server may proactively kick someone out of the room. The following are explanations for the message.reasoncode when the server kicks someone out
• 400, A user with the same ID has entered the room repeatedly. The user who entered the room first will be kicked out
• 401, The room has reached the set end time, or the teacher left the room and did not return within the specified time
• 402, The room has been disabled (via the backend or WebAPI)
• Event data:

Parameter name	Type	Description
type	String	Eventname: TK.EVENT_TYPE.roomParticipantEvicted
user	Object	Information of the user who was kicked out
message	Object	Reason and related information for being kicked out

• Code example

  const onRoomUseEvicted = data => {
    console.log("room event type: ", data.type);
    console.log("user evict reason: ", data.message)
    console.log("reason code: ", data.message.reason)
    alert( "You have been kicked out of the room")
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomParticipantEvicted , onRoomUseEvicted)

Received a chat message（TK.EVENT_TYPE.roomTextMessage）

• The event is triggered when a room chat message is received. Users can listen to this event to display the chat message
• Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.roomTextMessage
user	Object	Sender information of the chat message
message	Object	Content of the chat message
userid	String	Sender ID of the chat message
nickname	String	Nickname of the chat message sender
role	Number	Role of the chat message sender, specific values refer to the room roles

• Code example

  const onRoomTextMessage = data => {
    console.log("room event type: ", data.type);
    console.log("room message info: ", data.message)
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomTextMessage , onRoomTextMessage)

Custom message published（TK.EVENT_TYPE.roomPubmsg）

• The event is triggered when a custom room message is received. Users can listen to this event to respond to the start of various custom room operations
• Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.roomPubmsg
message	Object	Content of the custom published message

• Code example

  const onRoomPubmsg = data => {
    console.log("room event type: ", data.type);
    console.log("room message info: ", data.message)
    if (data.message.name === "testStart") {
        consoel.log("The exam has begun")}
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomPubmsg , onRoomPubmsg)

Custom message deleted（TK.EVENT_TYPE.roomDelmsg）

• The event is triggered when a custom room deletion message is received. Users can listen to this event to respond to the end of various custom room operations
• A custom message must first be published in the room before a corresponding custom message deletion can be received
• Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.roomDelmsg
message	Object	Content of the custom deletion message

• Code example

  const onRoomDelmsg = data => {
    console.log("room event type: ", data.type);
    console.log("room message info: ", data.message)
    if (data.message.name === "testStart") {
        consoel.log("The exam is over")}
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomDelmsg , onRoomDelmsg)

User attributes changed（TK.EVENT_TYPE.roomUserPropertyChanged）

• The event is triggered when a user's attributes change. Users who match the message recipient role (see message sender role) will receive this message. This message can be listened to for room-related business concerning user attribute changes
• In the large room mode, if the toId of changeUserProperty is TK.MSG_TO_ALLUSER or TK.MSG_TO_ALLEXCEPTSENDER, then the user attribute changes of users who have not taken the stage are only forwarded to the caller (i.e., the one who calls changeUserProperty) and the target user (i.e., the user whose attributes are changed). However, if the user attribute changes belong to a user who has taken the stage (i.e., a user publishing audio/video), the changes are forwarded to the specified users according to the toId.
• Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.roomUserPropertyChanged
user	Object	Information of the user whose attributes are modified
message	Object	The modified user attributes
userId	String	The ID of the user whose attributes are modified
fromID	String	The ID of the user who initiated the attribute modification

• Code example

  const onRoomUserPropertyChanged = data => {
    console.log("room event type: ", data.type);
    console.log("change property info: ", data.message)
    if (data.userId === "myId" && data.message.hasOwnProperty("level") ) {
        cosnole.log("My user attributes have been modified. The modified attribute is "level", and my new level is: " + data.message.level)}
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomUserPropertyChanged , onRoomUserPropertyChanged)

User's video publishing status changed（TK.EVENT_TYPE.roomUserVideoStateChanged）

• The event is triggered when the user's video publishing status changes. You can listen to this event to play or close the user's video
• Event data:

Parameter name	Type	Description
type	String	Event name:TK.EVENT_TYPE.roomUserVideoStateChanged
message	Object	Video publishing status information, with detailed information as follows

• message

Parameter name	Type	Description
userId	String	The ID of the user whose video publishing status has changed
published	Boolean	Publish or stop publishing
deviceId	String	Note: The deviceId is only available for videos published in multi-video mode

• Code example

  const onRoomUserVideoStateChanged = data => {
    console.log("room event type: ", data.type);
    console.log("data info: ", data.message)
    if (data.message.published) {
        room.playVideo(data.message.userId, "video-dom")
    } else {
        room.unplayVideo (data.message.userId)}
      }
      dispatcher.addEventListener(TK.EVENT_TYPE.roomUserVideoStateChanged , onRoomUserVideoStateChanged)

User's audio publishing status changed（TK.EVENT_TYPE.roomUserAudioStateChanged）

• The event is triggered when the user's audio status changes. You can listen to this event to play or mute the user's audio
• Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.roomUserAudioStateChanged
message	Object	Video publishing status information, with detailed information as follows

• message

Parameter name	Type	Description
userId	String	The user ID whose audio publishing status has changed
published	Boolean	Publish or stop publishing

• Code example

  const onRoomUserAudioStateChanged = data => {
    console.log("room event type: ", data.type);
    console.log("data info: ", data.message)
    if (data.message.published) {
        room.playAudio(data.message.userId)
    } else {
        room.unplayAudio(data.message.userId)}
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomUserAudioStateChanged , onRoomUserAudioStateChanged)

User's media file sharing status changed（TK.EVENT_TYPE.roomUserMediaStateChanged）

• The event is triggered when the user's media file sharing status changes. You can listen to this event to play or close the shared media file
• Event data:

Parameter name	Type	Description
type	String	Event name:TK.EVENT_TYPE.roomUserMediaStateChanged
message	Object	Shared media file publishing status information, with detailed information as follows

• message

Parameter name	Type	Description
userId	String	The user ID who shared the media file
type	String	Media file type: media or file
published	Boolean	Publish or stop publishing
attributes	Object	Media file attributes. Including media file width and height, duration, file name, whether it is paused, whether it contains audio and video, etc

• Code example

  const onRoomUserMediaStateChanged = data => {
    console.log("room event type: ", data.type);
    console.log("data info: ", data.message)
    if (data.message.published && data.message.type === "mdeia") {
        room.playRemoteMedia(data.message.userId, "media-dom")
    } 
    if (!data.message.published && data.message.type === "mdeia") {
        room.unplayRemoteMedia(data.message.userId)}
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomUserMediaStateChanged , onRoomUserMediaStateChanged)

User's screen sharing status changed(TK.EVENT_TYPE.roomUserScreenStateChanged)

• The event is triggered when the user's screen sharing status changes. You can listen to this event to play or close the shared screen
• Event data:

Parameter name	Type	Description
type	String	Event name:TK.EVENT_TYPE.roomUserScreenStateChanged
message	Object	Screen sharing publishing status information, with detailed information as follows

• message

Parameter name	Type	Description
userId	String	The user ID who shared the screen
type	String	Screen sharing type: screen
published	Boolean	Publish or stop publishing
attributes	Object	Screen sharing stream attributes. Including the video stream width and height, whether it contains audio, whether it contains video, etc

• Code example

  const onRoomUserScreenStateChanged = data => {
    console.log("room event type: ", data.type);
    console.log("data info: ", data.message)
    if (data.message.published && data.message.type === "screen") {
        room.playRemoteScreen(data.message.userId, "screen-dom")
    }
    if (!data.message.published && data.message.type === "screen") {
        room.unplayRemoteScreen(data.message.userId)}
      }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomUserScreenStateChanged , onRoomUserScreenStateChanged)

User's media file sharing attributes updated（TK.EVENT_TYPE.roomUserMediaAttributesUpdate）

• The event is triggered when the attributes of a shared media file change. You can listen to this event to provide prompts for pausing or resuming playback of the shared media file (video will automatically pause)
• Event data:

Parameter name	Type	Description
type	String	Event name:TK.EVENT_TYPE.roomUserMediaAttributesUpdate
message	Object	Shared media file publishing attribute update information, with detailed information as follows

• message

Parameter name	Type	Description
userId	String	The user ID who shared the media file
type	String	Media file type: media or file
attributes	Object	Media file attributes. Including media file width and height, duration, file name, whether it is paused, whether it contains audio and video, etc
updateAttributes	Object	Updated media file attributes

• Code example

  const onRoomUserMediaAttributesUpdate = data => {
    console.log("room event type: ", data.type);
    console.log("data info: ", data.message)
    if (data.message.type === "media" && data.message.updateAttributes.pause) {
        console.log("media paused")}
      }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomUserMediaAttributesUpdate , onRoomUserMediaAttributesUpdate)

Media device succeeded（TK.EVENT_TYPE.deviceSuccess）

• After the room object is initialized (init), this event will be triggered if there are available devices
• Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.deviceSuccess
message	Object	Types of available devices { kind: "videoinput"

• Code example

  const onDeviceSuccess = data => {
    console.log("room event type: ", data.type);
    console.log("data info: ", data.message)
    console.log(data.message.kind + "is avaliable")
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.deviceSuccess , onDeviceSuccess)

Media device failed（TK.EVENT_TYPE.deviceFailure）

• After the room object is initialized (init), this event will be triggered if audio or video cannot be used normally due to various reasons
• Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.deviceFailure
message	Object	Information of the unavailable devices { kind, deviceId }
code	Number	Device failure error code, for specific values, refer to the SDK error codes

• Code example

  const onDeviceFailure = data => {
    console.log("room event type: ", data.type);
    console.log("data info: ", data.message)
    console.log(data.message.kind + "is not avaliable, reason is: " + data.code)
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.deviceFailure , onDeviceFailure)

Media device changed（TK.EVENT_TYPE.deviceChange）

-After the room object is initialized (init), this event will be triggered if there are any additions or removals of audio or video devices - Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.deviceChange
message	Object	Changed device information{ type， devices }

• Code example

  const onDeviceChange = data => {
    console.log("room event type: ", data.type);
    console.log("data info: ", data.message)
    console.log("device change type: ", data.message.type) //  data.message.type:  TK.DEVICE_STATE.DEVICE_ADD(equipment addition) | TK.DEVICE_STATE.DEVICE_REMOVE(equipment removal)
    console.log("device change devices: ", data.message.devices)
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.deviceChange , onDeviceChange)

Primary camera changed（TK.EVENT_TYPE.roomUserMainCameraChanged）

• The event is triggered when the main camera changes in multi-camera mode
• Event data:

Parameter name	Type	Description
type	String	Event name:TK.EVENT_TYPE.roomUserMainCameraChanged
message	Object	Information about the change of the main camera

• message

Parameter name	Type	Description
userId	String	User ID
deviceId	String	The device ID of the new main camera

• Code example

  const onRoomUserMainCameraChanged = data => {
    console.log("room event type: ", data.type);
    console.log("data info: ", data.message)
    console.log( data.message.userId + "The main camera device has changed, and the new device id is" + data.message.deviceId)
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomUserMainCameraChanged , onRoomUserMainCameraChanged)

First video frame（TK.EVENT_TYPE.roomFirstVideoFrame）

• The event is triggered when the video window is created and the video is ready to play
• If the joinRoom is not successful (i.e., the TK.EVENT_TYPE.roomConnected event is not received), then the userId will be ""
• Event data:

Parameter name	Type	Description
type	String	Event name:TK.EVENT_TYPE.roomFirstVideoFrame
message	Object	First frame of video related information

• message

Parameter name	Type	Description
userId	String	User ID
mediaType	String	Media type, for specific values, refer to the media type documentation
width	Number	Video width
height	Number	Video height
deviceId	String	Video device ID. Note: This attribute is only available in multi-camera mode

• Code example

  const onRoomFirstVideoFrame = data => {
    console.log("room event type: ", data.type);
    console.log("data info: ", data.message)
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomFirstVideoFrame , onRoomFirstVideoFrame)

First audio frame（TK.EVENT_TYPE.roomFirstAudioFrame）

• The event is triggered when the audio player is created and the audio is ready to play
• If the joinRoom is not successful (i.e., the TK.EVENT_TYPE.roomConnected event is not received), then the userId will be ""
• Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.roomFirstAudioFrame
message	Object	Information related to the first frame of audio

• message

Parameter name	Type	Description
userId	String	User ID
mediaType	String	Media type, for specific values, refer to the media type documentation

File list（TK.EVENT_TYPE.roomFiles）

• The event is triggered when the file information in the room is fully retrieved. You can listen to this event to obtain the currently available files in the room
• Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.roomFiles
message	Array	Room file information array. The structure of the file object is described as follows

• fileInfo

Parameter name	Type	Description
fileid	Number	File ID
companyid	String	Enterprise ID
filename	String	File name
uploaduserid	String	Uploader ID
downloadpath	String	File download path
swfpath	String	File view path
filetype	String	File type
pagenum	Number	Total number of pages. This field is only valid for ordinary static files and is not applicable to dynamic PPT and H5 files
filecategory	Number	File category，0：room, 1：system
fileprop	Number	File classification:0: Ordinary document,
1-2: Dynamic PPT (1 for old version, 2 for new version),3: h5 document
type	Number	Whether it is the default document:
0: Non-default document,
1: Default document

• Code example

  const onRoomFiles = data => {
    console.log("room event type: ", data.type);
    console.log("room file info: ", data.message)
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomFiles , onRoomFiles)

Add file（TK.EVENT_TYPE.roomAddFile）

• The event is triggered when a new file is successfully added to the room
• Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.roomAddFile
message	Object	Description of the added file

• message

Parameter name	Type	Description
fileid	Number	The ID of the added file
fromID	String	The user ID of the uploader

• Code example

  const onRoomAddFile = data => {
    console.log("room event type: ", data.type);
    console.log("room new file info: ", data.message)
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomAddFile , onRoomAddFile)

Delete file（TK.EVENT_TYPE.roomDeleteFile）

• The event is triggered when a file is deleted in the room
• Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.roomDeleteFile
message	Object	Description of the deleted file

• message

Parameter name	Type	Description
fileid	Number	The ID of the deleted file
fromID	String	The user ID of the deleter
fileinfo	Object	Information of the deleted file

• Code example

  const onRoomDeleteFile = data => {
    console.log("room event type: ", data.type);
    console.log("room delete file info: ", data.message)
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomDeleteFile , onRoomDeleteFile)

Update file（TK.EVENT_TYPE.roomUpdateFile）

• The event is triggered when the file information in the room is updated
• Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.roomUpdateFile
message	Object	Description of the updated file

• message

Parameter name	Type	Description
fileid	Number	The ID of the updated file
fromID	String	The user ID of the updater
fileinfo	Object	Information of the updated file

• Code example

  const onRoomUpdateFile = data => {
    console.log("room event type: ", data.type);
    console.log("room update file info: ", data.message)
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomUpdateFile , onRoomUpdateFile)

Room mode changed（TK.EVENT_TYPE.roomModeChanged）

• The event is triggered when the room mode changes, such as switching from a normal room to a large room mode due to an excessive number of people in the classroom
• If it is the large room (i.e., large-scale room) mode, which means the roomMode is TK.ROOM_MODE.BIG_ROOM, certain interfaces or events will undergo changes. For details, refer to the Large Room (Large-Scale Room) Mode Description
• Event data:

Parameter name	Type	Description
type	String	Event name:TK.EVENT_TYPE.roomModeChanged
message	Object	New room mode { roomMode: roomMode }, for specific values, refer to the room mode documentation

• Code example

  const onRoomModeChanged = data => {
    console.log("room event type: ", data.type);
    console.log("room mode changed info: ", data.message)
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomModeChanged , onRoomModeChanged)

Server address updated（TK.EVENT_TYPE.roomServerAddressUpdate）

• The event is triggered when the server address is updated
• Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.roomServerAddressUpdate
message	Object	New server address information

• message

Parameter name	Type	Description
web_protocol	String	Protocol for web requests
web_host	String	Domain name for web requests
web_port	Number	Port for web requests
doc_protocol	String	Protocol for document loading
doc_host	String	Domain name for document loading
doc_port	Number	Port for document loading
backup_doc_protocol	String	Protocol for backup document loading
backup_doc_host_list	Array	List of domain names for backup document loading
backup_doc_port	Number	Port for backup document loading

• Code example

  const onRoomServerAddressUpdate = data => {
    console.log("room event type: ", data.type);
    console.log("room server address update info: ", data.message)
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomServerAddressUpdate , onRoomServerAddressUpdate)

User's network status changed（TK.EVENT_TYPE.roomUserNetworkStateChanged）

• The event is triggered to dispatch user network connection status messages
• Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.roomUserNetworkStateChanged
message	Object	Network status information

• message

Parameter name	Type	Description
userId	String	User ID
deviceId	String	Video device ID. Note: The deviceId is only available for videos published in multi-video mode
networkStatus	Object	Network status data, with detailed data format as follows

• networkStatus

{
    //  Video data statistics
    video:{
        bitsPerSecond:Bandwidth bps,
        packetsLost:Packet loss count ,
        totalPackets:Total packet count ,
        packetsLostRate:Video packet loss rate ,
        currentDelay:Delay ,
        frameRate:Frame rate ,
        frameWidth:Video width ,
        frameHeight: Video height ,
        timestamp:Timestamp ,
        netquality:Network quality (for possible values, refer to [Network Status Quality])，
    },
    // Audio data statistics
    audio:{
        bitsPerSecond:Bandwidth bps ,
        packetsLost:Packet loss count,
        totalPackets:Total packet count ,
        packetsLostRate:Audio packet loss rate ,
        currentDelay:Delay ,
        timestamp:Timestamp ,
        netquality:Network quality (for possible values, refer to [Network Status Quality])，
    }}

- Code example

  const onRoomUserNetworkStateChanged = data => {
    console.log("room event type: ", data.type);
    console.log("room user network state change info: ", data.message)
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomUserNetworkStateChanged , onRoomUserNetworkStateChanged)

User's network status statistics（TK.EVENT_TYPE.roomRtcStatsReportEvent）

• The event is triggered to dispatch the current user's network status statistics message
• The event begins to be dispatched once the user enters the classroom, with a frequency of 1 time per second
• Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.roomRtcStatsReportEvent
message	Object	Network status information

• message

Parameter name	Type	Description
stats	Object	Event data object, detailed as follows

• stats

Parameter name	Type	Description
audioDelay	Number	Audio publishing delay (ms)
videoDelay	Number	Video publishing delay(ms)
inAudioDelay	Number	Audio subscription delay（ms）
inVideoDelay	Number	Video subscription delay（ms）
inAudioKBitRate	Number	Audio subscription bitrate
inVideoKBitRate	Number	Video subscription bitrate
inBytes	Number	Number of bytes subscribed
outBytes	Number	Number of bytes published
inPackets	Number	Number of subscription packets
outPackets	Number	Number of published packets
downlinkDelay	Number	Total subscription delay（ms）
uplinkDelay	Number	Total publishing delay（ms）
downlinkDelayLevel	Number	Downlink network quality, refer to Network Status Quality
uplinkDelayLevel	Number	Uplink network quality, refer to Network Status Quality
duration	Number	Total duration（ms）

• Code example

  const onRoomRtcStatsReportEvent = data => {
    const stats = data.message.stats}dispatcher.addEventListener(TK.EVENT_TYPE.roomRtcStatsReportEvent , onRoomRtcStatsReportEvent)

Server recording status updated（TK.EVENT_TYPE. roomServerRecordStateChange）

• The event is triggered when the server recording status is updated
• Event data

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.roomServerRecordStateChange
message	Object	Current server recording status information

• message

Parameter name	Type	Description
state	String	Recording status:start, pause, stop, resume
fromID	String	User ID of the recorder status updater
comRecId	String	Regular recording ID. Note: This attribute is only available when the status is start
mp4RecId	String	MP4 recording ID. Note: This attribute is only available when the status is start

• Code example

  const onRoomServerRecordStateChange = data => {
    console.log("room event type: ", data.type);
    console.log("room server record info: ", data.message)
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomServerRecordStateChange , onRoomServerRecordStateChange)

Error message notification（TK.EVENT_TYPE.roomErrorNotice）

• The event is triggered to dispatch error message notifications
• Event data:

Parameter name	Type	Description
type	String	Event name:TK.EVENT_TYPE.roomErrorNotice
message	Object	Notification information

• message

Parameter name	Type	Description
code	Number	Error status code, refer to ERROR message notification error codes
info	Object	Supplementary information, used to provide additional explanations for the relevant status codes

• Code example

  const onRoomErrorNotice = data => {
    console.log("room event type: ", data.type);
    console.log("room error notice info: ", data.message)
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomErrorNotice, onRoomErrorNotice)

INFO message notification（TK.EVENT_TYPE.roomInfoNotice）

• The event is triggered to dispatch info message notifications
• Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.roomInfoNotice
message	Object	Notification information

• message

Parameter name	Type	Description
code	Number	Error status code, refer to INFO message notification status codes
info	Object	Supplementary information, used to provide additional explanations for the relevant status codes

• Code example

  const onRoomInfoNotice = data => {
    console.log("room event type: ", data.type);
    console.log("room info notice info: ", data.message)
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomInfoNotice, onRoomInfoNotice)

Warning message notification（TK.EVENT_TYPE.roomWarnNotice）

• The event is triggered to dispatch warn message notifications
• Event data:

Parameter name	Type	Description
type	String	Event name: TK.EVENT_TYPE.roomWarnNotice
message	Object	Notification information

• message

Parameter name	Type	Description
code	Number	Error status code, refer to WARN message notification status codes
info	Object	Supplementary information, used to provide additional explanations for the relevant status codes

• Code example

  const onRoomInfoNotice = data => {
    console.log("room event type: ", data.type);
    console.log("room info notice info: ", data.message)
  }
  dispatcher.addEventListener(TK.EVENT_TYPE.roomInfoNotice, onRoomInfoNotice)