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This protocol carries all in-room events. The first parameter of every callback is the MeetingKitRoom instance the event comes from. With multiple rooms, use the first parameter to tell which room an event belongs to; read the room number and meeting ID from room.roomNo and room.meetingId. For account-level and device-level events (audio route changes, app performance), implement MeetingKitDelegate.
The same userId may appear in multiple rooms at once. When querying member data in a callback, use the room instance passed as the first parameter (such as [room findMemberWithUserId:userId]); don’t reuse indexes across rooms.

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Error callbacks

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meetingRoom:onError:errMsg:()

- (void)meetingRoom:(MeetingKitRoom *)room onError:(SEAError)errCode errMsg:(nullable NSString *)errMsg Called when an error occurs. Indicates that the SDK has hit an unrecoverable error, such as a failure to enter the room or to turn on a device. When this fires, you usually need to get a new token and enter the meeting again. See: Error codes

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Connection callbacks

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meetingRoomOnReconnecting:()

- (void)meetingRoomOnReconnecting:(MeetingKitRoom *)room Called when reconnection starts. Indicates that the SDK connection has run into a problem, such as network jitter, and the SDK is trying to reconnect. If an error occurs along the way, the SDK fires the meetingRoom:onError:errMsg:() callback.

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meetingRoomOnReconnected:()

- (void)meetingRoomOnReconnected:(MeetingKitRoom *)room Called when reconnection succeeds. You receive this notification when the SDK has reconnected after a disconnect and the connection is restored. If an error occurs along the way, the SDK fires the meetingRoom:onError:errMsg:() callback.

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Local user callbacks

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meetingRoom:onEnterRoom:userId:()

- (void)meetingRoom:(MeetingKitRoom *)room onEnterRoom:(NSString *)meetingId userId:(NSString *)userId Called when you enter the room. After you call enterRoom:onSuccess:onFailed:() on MeetingKitRoom to enter the room, you receive the meetingRoom:onEnterRoom:userId:() callback from MeetingKitRoomDelegate. If an error occurs, the SDK returns it through the method’s onFailed parameter.

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meetingRoom:onExitRoom:()

- (void)meetingRoom:(MeetingKitRoom *)room onExitRoom:(SEALeaveReason)reason Called when you exit the room. You receive this notification when the current user exits without having requested it, for example when removed from the room by the host or when the meeting is ended.
Note that calling exitRoom: on MeetingKitRoom runs the exit logic, such as releasing audio and video device resources and codec resources. Once all resources held by the SDK are released, the SDK reports it through the method’s onSuccess parameter, where you can perform actions such as leaving the screen. In this case, you no longer receive the meetingRoom:onExitRoom:() notification.

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meetingRoom:onUserUpdate:()

- (void)meetingRoom:(MeetingKitRoom *)room onUserUpdate:(NSString *)userId Called when your own data is updated. Supported since 2.0.0. After the server changes the current user’s data in this room, the SDK notifies your app through this callback.

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meetingRoom:onRequestOpenCamera:()

- (void)meetingRoom:(MeetingKitRoom *)room onRequestOpenCamera:(NSString *)userId Called when you’re asked to turn on the camera. After the host calls adminRequestUserOpenCamera:onSuccess:onFailed:() on MeetingKitRoom to ask you to turn on your camera, the SDK fires this event to notify you.

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meetingRoom:onRequestOpenMic:()

- (void)meetingRoom:(MeetingKitRoom *)room onRequestOpenMic:(NSString *)userId Called when you’re asked to turn on the microphone. After the host calls adminRequestUserOpenMic:onSuccess:onFailed:() on MeetingKitRoom to ask you to turn on your microphone, the SDK fires this event to notify you.

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meetingRoom:onRequestOpenShare:()

- (void)meetingRoom:(MeetingKitRoom *)room onRequestOpenShare:(NSString *)userId Called when you’re asked to start sharing. After the host calls adminRequestUserOpenShare:onSuccess:onFailed:() on MeetingKitRoom to ask you to start sharing, the SDK fires this event to notify you.

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meetingRoom:onRoomMoveInWaitingRoom:()

- (void)meetingRoom:(MeetingKitRoom *)room onRoomMoveInWaitingRoom:(NSString *)userId Called when the host or a co-host moves you into the waiting room. After the host calls adminMoveInWaitingRoom:nickname:onSuccess:onFailed:() on MeetingKitRoom to move a member of the meeting into the waiting room, the SDK fires this event to notify you.

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meetingRoom:onRoomMoveSubMeeting:fromMeetingTitle:toMeetingId:toMeetingTitle:()

- (void)meetingRoom:(MeetingKitRoom *)room onRoomMoveSubMeeting:(NSString *)fromMeetingId fromMeetingTitle:(NSString *)fromMeetingTitle toMeetingId:(NSString *)toMeetingId toMeetingTitle:(NSString *)toMeetingTitle Called when the host or a co-host moves you into a sub-meeting or the main meeting. After the host calls adminMoveSubMeetingUser:fromGroupId:toGroupId:onSuccess:onFailed:() on MeetingKitRoom to move you into a sub-meeting or the main meeting, the SDK fires this event to notify you.

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Room callbacks

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meetingRoom:onRoomCameraStateChanged:selfUnmuteCameraDisabled:userId:()

- (void)meetingRoom:(MeetingKitRoom *)room onRoomCameraStateChanged:(BOOL)cameraDisabled selfUnmuteCameraDisabled:(BOOL)selfUnmuteCameraDisabled userId:(NSString *)userId Called when the room’s camera-disabled state changes. After the host calls adminUpdateRoomCameraState:selfUnmuteCameraDisabled:onSuccess:onFailed:() on MeetingKitRoom to update camera off for everyone, the SDK fires this event to notify you.

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meetingRoom:onRoomMicStateChanged:selfUnmuteMicDisabled:userId:()

- (void)meetingRoom:(MeetingKitRoom *)room onRoomMicStateChanged:(BOOL)micDisabled selfUnmuteMicDisabled:(BOOL)selfUnmuteMicDisabled userId:(NSString *)userId Called when the room’s microphone-disabled state changes. After the host calls adminUpdateRoomMicState:selfUnmuteMicDisabled:onSuccess:onFailed:() on MeetingKitRoom to update mute all, the SDK fires this event to notify you.

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meetingRoom:onRoomChatDisabledChanged:userId:()

- (void)meetingRoom:(MeetingKitRoom *)room onRoomChatDisabledChanged:(BOOL)chatDisabled userId:(NSString *)userId Called when the room’s chat-disabled state changes. After the host calls adminUpdateRoomChatDisabled:onSuccess:onFailed:() on MeetingKitRoom to update the room’s chat-disabled state, the SDK fires this event to notify you.

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meetingRoom:onRoomShareDisabledChanged:userId:()

- (void)meetingRoom:(MeetingKitRoom *)room onRoomShareDisabledChanged:(BOOL)shareDisabled userId:(NSString *)userId Called when the room’s sharing-disabled state changes. After the host calls adminUpdateRoomShareDisabled:onSuccess:onFailed:() on MeetingKitRoom to update the room’s sharing-disabled state, the SDK fires this event to notify you.

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meetingRoom:onRoomScreenshotDisabledChanged:userId:()

- (void)meetingRoom:(MeetingKitRoom *)room onRoomScreenshotDisabledChanged:(BOOL)screenshotDisabled userId:(NSString *)userId Called when the room’s screenshot-disabled state changes. After the host calls adminUpdateRoomScreenshotDisabled:onSuccess:onFailed:() on MeetingKitRoom to update the room’s screenshot permission, the SDK fires this event to notify you.

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meetingRoom:onRoomWatermarkDisabledChanged:userId:()

- (void)meetingRoom:(MeetingKitRoom *)room onRoomWatermarkDisabledChanged:(BOOL)watermarkDisabled userId:(NSString *)userId Called when the room’s watermark-disabled state changes. After the host calls adminUpdateRoomWatermarkDisabled:onSuccess:onFailed:() on MeetingKitRoom to update the room’s watermark setting, the SDK fires this event to notify you.

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meetingRoom:onRoomWaitingRoomDisabledChanged:userId:()

- (void)meetingRoom:(MeetingKitRoom *)room onRoomWaitingRoomDisabledChanged:(BOOL)waitingRoomDisabled userId:(NSString *)userId Called when the room’s waiting-room-disabled state changes. After the host calls adminUpdateWaitingRoomDisabled:onSuccess:onFailed:() on MeetingKitRoom to update the room’s waiting-room-disabled state, the SDK fires this event to notify you.

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meetingRoom:onRoomLockedChanged:userId:()

- (void)meetingRoom:(MeetingKitRoom *)room onRoomLockedChanged:(BOOL)locked userId:(NSString *)userId Called when the room’s locked state changes. After the host calls adminUpdateRoomLocked:onSuccess:onFailed:() on MeetingKitRoom to update the room’s locked state, the SDK fires this event to notify you.

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meetingRoom:onRoomMoveHost:sourceUserId:()

- (void)meetingRoom:(MeetingKitRoom *)room onRoomMoveHost:(NSString *)userId sourceUserId:(NSString *)sourceUserId Called when the host role is transferred. After the host calls adminMoveHost:onSuccess:onFailed:() on MeetingKitRoom to transfer the host role, the SDK fires this event to notify you.

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meetingRoom:onRoomShareStart:shareType:()

- (void)meetingRoom:(MeetingKitRoom *)room onRoomShareStart:(NSString *)userId shareType:(SEAShareType)shareType Called when sharing starts. After a member calls requestShare:onSuccess:onFailed:() on MeetingKitRoom to start sharing, the SDK fires this event to notify you.
Note: If a member is already sharing in the room, members who enter later also receive this notification.

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meetingRoom:onRoomShareStop:shareType:()

- (void)meetingRoom:(MeetingKitRoom *)room onRoomShareStop:(NSString *)userId shareType:(SEAShareType)shareType Called when sharing stops. After a member calls stopShare:onFailed:() on MeetingKitRoom to stop sharing, the SDK fires this event to notify you.
Note: If the sharing member exits the room without stopping sharing first, other members receive the meetingRoom:onRoomShareStop:shareType:() event first and then the meetingRoom:onUserExit:() event.

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meetingRoom:onAdminRoomShareStop:shareType:()

- (void)meetingRoom:(MeetingKitRoom *)room onAdminRoomShareStop:(NSString *)userId shareType:(SEAShareType)shareType Called when the host stops a member’s sharing. After the host calls adminStopRoomShare:onFailed:() on MeetingKitRoom to stop a member’s sharing, the SDK fires this event to notify you.

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meetingRoom:onRoomHandUpChanged:enable:handupType:()

- (void)meetingRoom:(MeetingKitRoom *)room onRoomHandUpChanged:(NSString *)userId enable:(BOOL)enable handupType:(SEAHandupType)handupType Called when a member’s raise-hand state changes. After a member calls requestHandup:onSuccess:onFailed:() on MeetingKitRoom to raise a hand, the SDK fires this event to notify you if you are a host or co-host of the room.

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meetingRoom:onRoomSubMeetingStart:title:conferee:()

- (void)meetingRoom:(MeetingKitRoom *)room onRoomSubMeetingStart:(NSString *)meetingId title:(NSString *)title conferee:(nullable NSArray <NSString *> *)conferee Called when a sub-meeting starts. After the host or a co-host calls adminStartSubMeeting:onSuccess:onFailed:() on MeetingKitRoom to start sub-meetings, the SDK fires this event to notify you.

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meetingRoom:onRoomSubMeetingStop:()

- (void)meetingRoom:(MeetingKitRoom *)room onRoomSubMeetingStop:(NSString *)parentMid Called when sub-meetings end. After the host or a co-host calls adminStopSubMeeting:onSuccess:onFailed:() on MeetingKitRoom to end sub-meetings, the SDK fires this event to notify you.

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meetingRoom:onRoomMeetingTitleChanged:()

- (void)meetingRoom:(MeetingKitRoom *)room onRoomMeetingTitleChanged:(NSString *)title Called when the room’s meeting title changes. After the host or a co-host calls adminUpdateSubMeetingTitle:targetId:onSuccess:onFailed:() on MeetingKitRoom to change a sub-meeting’s title, the SDK fires this event to notify you.

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User callbacks

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meetingRoom:onUserEnter:()

- (void)meetingRoom:(MeetingKitRoom *)room onUserEnter:(NSString *)userId Called when a member enters the room, including the current user. After a remote user calls enterRoom:onSuccess:onFailed:() on MeetingKitRoom to enter the room, the SDK fires this event to notify you.

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meetingRoom:onUserExit:()

- (void)meetingRoom:(MeetingKitRoom *)room onUserExit:(NSString *)userId Called when a member exits the room, including the current user. After a remote user calls exitRoom:() on MeetingKitRoom to exit the room, the SDK fires this event to notify you.

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meetingRoom:onUserNameChanged:nickname:()

- (void)meetingRoom:(MeetingKitRoom *)room onUserNameChanged:(NSString *)targetUserId nickname:(NSString *)nickname Called when a user’s nickname changes. After a member calls updateName:onSuccess:onFailed:() on MeetingKitRoom, or the host calls adminUpdateNickname:nickname:onSuccess:onFailed:(), to update a user’s nickname, the SDK fires this event to notify you.

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meetingRoom:onUserRoleChanged:userRole:()

- (void)meetingRoom:(MeetingKitRoom *)room onUserRoleChanged:(NSString *)targetUserId userRole:(SEAUserRole)userRole Called when a user’s role changes. After a host or co-host of the room calls adminUpdateUserRole:userRole:onSuccess:onFailed:() on MeetingKitRoom to update a user’s role, the SDK fires this event to notify you.

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meetingRoom:onUserCameraStateChanged:cameraState:reason:()

- (void)meetingRoom:(MeetingKitRoom *)room onUserCameraStateChanged:(NSString *)targetUserId cameraState:(SEADeviceState)cameraState reason:(SEAChangeReason)reason Called when a user’s camera state changes. The SDK fires this event to notify you after a member of the room turns the camera on or off through requestOpenCamera:view:onSuccess:onFailed:() or closeCamera:onFailed:() on MeetingKitRoom, and after a host or co-host of the room turns off a remote user’s camera through adminCloseUserCamera:onSuccess:onFailed:() on MeetingKitRoom.
Note: If a member already had the camera on before you entered the room, this event also fires when you enter the room.

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meetingRoom:onUserMicStateChanged:micState:reason:()

- (void)meetingRoom:(MeetingKitRoom *)room onUserMicStateChanged:(NSString *)targetUserId micState:(SEADeviceState)micState reason:(SEAChangeReason)reason Called when a user’s microphone state changes. The SDK fires this event to notify you after a member of the room turns the microphone on or off through requestOpenMic:onFailed:() or closeMic:onFailed:() on MeetingKitRoom, and after a host or co-host of the room turns off a remote user’s microphone through adminCloseUserMic:onSuccess:onFailed:() on MeetingKitRoom.
Note: If a member already had the microphone on before you entered the room, this event also fires when you enter the room.

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meetingRoom:onUserChatDisabledChanged:userId:()

- (void)meetingRoom:(MeetingKitRoom *)room onUserChatDisabledChanged:(BOOL)chatDisabled userId:(NSString *)userId Called when a user’s chat-disabled state changes. After a host or co-host of the room calls adminUpdateUserChatDisabled:chatDisabled:onSuccess:onFailed:() on MeetingKitRoom to update a user’s chat state, the SDK fires this event to notify you.

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meetingRoom:onUserDrawDisabledChanged:userId:()

- (void)meetingRoom:(MeetingKitRoom *)room onUserDrawDisabledChanged:(BOOL)drawDisabled userId:(NSString *)userId Called when a user’s drawing-disabled state changes. After a host or co-host of the room calls adminUpdateUserDrawDisabled:drawDisabled:onSuccess:onFailed:() on MeetingKitRoom to update a user’s drawing permission, the SDK fires this event to notify you.

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meetingRoom:onHandupConfirm:approve:userId:()

- (void)meetingRoom:(MeetingKitRoom *)room onHandupConfirm:(SEAHandupType)handupType approve:(BOOL)approve userId:(NSString *)userId Called with the result of handling a raised hand. After a member of the room calls requestHandup:onSuccess:onFailed:() on MeetingKitRoom to raise a hand, the host and co-hosts in the room receive the meetingRoom:onRoomHandUpChanged:enable:handupType:() event from the SDK. After the host or a co-host handles the raised hand through adminConfirmHandup:handupType:approve:onSuccess:onFailed:(), the SDK fires this event to notify you.

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meetingRoom:onRoomUserEnterWaitingRoom:nickname:()

- (void)meetingRoom:(MeetingKitRoom *)room onRoomUserEnterWaitingRoom:(NSString *)userId nickname:(NSString *)nickname Called when a remote user enters the waiting room. When a user calls enterRoom:() on MeetingKitRoom to enter the room and the room has the waiting room enabled, the system places the member in the room’s waiting room by default. The host and co-hosts in the room then receive this notification from the SDK.

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meetingRoom:onRoomUserExitWaitingRoom:nickname:()

- (void)meetingRoom:(MeetingKitRoom *)room onRoomUserExitWaitingRoom:(NSString *)userId nickname:(NSString *)nickname Called when a remote user exits the waiting room. When a user calls exitWaitingRoom:onSuccess:() on MeetingKitRoom to exit the waiting room, the host and co-hosts in the room receive this notification from the SDK.

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Message callbacks

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meetingRoom:onReceiveChatMessage:message:messageType:()

- (void)meetingRoom:(MeetingKitRoom *)room onReceiveChatMessage:(NSString *)senderId message:(NSString *)message messageType:(SEAMessageType)messageType Called when a chat message is received. After sendRoomChatMessage:messageType:targetId:onSuccess:onFailed:() or sendRoomCustomMessage:targetId:onSuccess:onFailed:() on MeetingKitRoom is called to send a message, the SDK fires this event to notify you.

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meetingRoom:onReceiveSystemMessage:messageType:()

- (void)meetingRoom:(MeetingKitRoom *)room onReceiveSystemMessage:(NSString *)message messageType:(SEAMessageType)messageType Called when a system message is received. Indicates that a message sent by the system has been received.

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meetingRoom:onReceiveCustomMessage:action:userId:sessionId:nickname:()

- (void)meetingRoom:(MeetingKitRoom *)room onReceiveCustomMessage:(NSString *)content action:(NSString *)action userId:(nullable NSString *)userId sessionId:(nullable NSString *)sessionId nickname:(nullable NSString *)nickname Called when a custom message is received. Supported since 2.0.0. The SDK passes room custom messages that your app sends through the server to the corresponding room through this callback.

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Cloud recording callbacks

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meetingRoom:onCloudRecordStatusChange:status:errMsg:()

- (void)meetingRoom:(MeetingKitRoom *)room onCloudRecordStatusChange:(SEARecordType)recordType status:(SEARecordStatus)status errMsg:(nullable NSString *)errMsg Called when the cloud recording status changes. After startCloudRecord:onSuccess:onFailed:() or stopCloudRecord:onFailed:() on MeetingKitRoom is called to start or stop cloud recording, the SDK fires this event to notify you.

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meetingRoom:onCloudRecordAlarm:taskId:gateway:alarmAt:alarmBrief:()

- (void)meetingRoom:(MeetingKitRoom *)room onCloudRecordAlarm:(SEARecordStatus)status taskId:(NSString *)taskId gateway:(NSString *)gateway alarmAt:(NSInteger)alarmAt alarmBrief:(nullable NSString *)alarmBrief Called when a cloud recording alarm is raised. When the meeting service detects a problem with cloud recording, the SDK fires this event to notify you.

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Screen capture callbacks

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meetingRoom:onScreenRecordStatus:()

- (void)meetingRoom:(MeetingKitRoom *)room onScreenRecordStatus:(SEAScreenRecordStatus)status Called with the screen sharing status. After the screen recording extension calls broadcastStartedWithAppGroup:delegate:() on MeetingKit to start screen recording, the SDK reports the current screen capture status through the meetingRoom:onScreenRecordStatus:() callback.

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Audio callbacks

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meetingRoom:onRemoteMemberAudioStatus:()

- (void)meetingRoom:(MeetingKitRoom *)room onRemoteMemberAudioStatus:(NSArray<SEAStreamAudioModel *> *)audioArray Called with remote members’ audio status data. Reports the audio status data of the room’s members, including audio decibel and power values. Your app can use this data for purposes such as voice-activated switching.

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Media streaming callbacks

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meetingRoom:onDownBitrateAdaptiveUserId:state:()

- (void)meetingRoom:(MeetingKitRoom *)room onDownBitrateAdaptiveUserId:(NSString *)userId state:(SEADownBitrateAdaptiveState)state Called with the downlink adaptive bitrate state. With adaptive bitrate enabled, the SDK dynamically adjusts the adaptive bitrate level of each member’s downlink based on network conditions.

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meetingRoom:onUploadBitrateAdaptiveState:()

- (void)meetingRoom:(MeetingKitRoom *)room onUploadBitrateAdaptiveState:(SEAUploadBitrateAdaptiveState)state Called with the uplink adaptive bitrate state. With adaptive bitrate enabled, the SDK dynamically adjusts the adaptive bitrate level of the uplink based on network conditions.

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meetingRoom:onDownLossLevelChangeState:()

- (void)meetingRoom:(MeetingKitRoom *)room onDownLossLevelChangeState:(SEADownLossLevelState)state Called when the downlink average packet loss level changes.

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meetingRoom:onDownLossRateAverage:()

- (void)meetingRoom:(MeetingKitRoom *)room onDownLossRateAverage:(CGFloat)average Called with the downlink average packet loss rate.

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meetingRoom:onSendStreamModel:()

- (void)meetingRoom:(MeetingKitRoom *)room onSendStreamModel:(SEAStreamSendModel *)sendModel Called with media stream send status data. At a fixed interval, you receive the meetingRoom:onSendStreamModel:() callback from MeetingKitRoomDelegate, describing the current send status such as latency and packet loss rate.

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meetingRoom:onReceiveStreamModel:()

- (void)meetingRoom:(MeetingKitRoom *)room onReceiveStreamModel:(NSArray <SEAStreamReceiveModel *> *)receiveArray Called with media stream receive status data. At a fixed interval, you receive the meetingRoom:onReceiveStreamModel:() callback from MeetingKitRoomDelegate, describing the current receive status such as latency and packet loss rate.

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meetingRoom:onSendQualityModel:()

- (void)meetingRoom:(MeetingKitRoom *)room onSendQualityModel:(SEAStreamQualityModel *)qualityModel Called with media stream uplink quality data. At a fixed interval, you receive the meetingRoom:onSendQualityModel:() callback from MeetingKitRoomDelegate, describing the current send status such as latency and packet loss rate.

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meetingRoom:onReceiveQualityModel:()

- (void)meetingRoom:(MeetingKitRoom *)room onReceiveQualityModel:(SEAStreamQualityModel *)qualityModel Called with media stream downlink quality data. At a fixed interval, you receive the meetingRoom:onReceiveQualityModel:() callback from MeetingKitRoomDelegate, describing the current receive status such as latency and packet loss rate.

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meetingRoom:onReceiveStreamStatusChange:streamType:status:()

- (void)meetingRoom:(MeetingKitRoom *)room onReceiveStreamStatusChange:(NSString *)targetUserId streamType:(SEAVideoStreamType)streamType status:(BOOL)status Called when the receive status of a video stream changes. After you subscribe to a member’s remote video stream, you receive the meetingRoom:onReceiveStreamStatusChange:streamType:status:() callback from MeetingKitRoomDelegate if no video from that member arrives for a while. You also receive this callback when the video stream recovers.

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meetingRoom:onReceiveMixtureStreamStatusChange:()

- (void)meetingRoom:(MeetingKitRoom *)room onReceiveMixtureStreamStatusChange:(BOOL)status Called when the receive status of the composite stream changes. After you subscribe to the composite video stream, you receive the meetingRoom:onReceiveMixtureStreamStatusChange:() callback from MeetingKitRoomDelegate if no composite video arrives for a while. You also receive this callback when the video stream recovers.

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meetingRoom:onReceiveRetweetStreamStatusChange:status:()

- (void)meetingRoom:(MeetingKitRoom *)room onReceiveRetweetStreamStatusChange:(NSString *)streamName status:(BOOL)status Called when the receive status of a re-streamed stream changes. After you subscribe to a remote re-streamed stream, you receive the meetingRoom:onReceiveRetweetStreamStatusChange:status:() callback from MeetingKitRoomDelegate if no re-streamed video arrives for a while. You also receive this callback when the video stream recovers. In this callback, use streamName to tell which re-streamed stream it is, and show or hide a loading indicator (such as UIActivityIndicatorView).

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Other callbacks

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meetingRoom:onExtendedEvents:content:()

- (void)meetingRoom:(MeetingKitRoom *)room onExtendedEvents:(NSString *)event content:(NSString *)content Called when an extended event is received. Callback for extended events that your app defines in the room.

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Sign-in callbacks

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meetingRoom:onSignInActivity:epoch:beginAt:dur:endAt:desc:()

- (void)meetingRoom:(MeetingKitRoom *)room onSignInActivity:(NSString *)userId epoch:(NSInteger)epoch beginAt:(NSInteger)beginAt dur:(NSInteger)dur endAt:(NSInteger)endAt desc:(nullable NSString *)desc Called when a sign-in activity is created. After the host calls signInCreate:desc:onSuccess:onFailed:() on MeetingKitRoom to create a sign-in activity, the SDK fires this event to notify you.

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meetingRoom:onSignInFinish:epoch:()

- (void)meetingRoom:(MeetingKitRoom *)room onSignInFinish:(NSString *)userId epoch:(NSInteger)epoch Called when a sign-in activity ends. After the host calls signInFinish:onFailed:() on MeetingKitRoom to end the sign-in activity, the SDK fires this event to notify you.