# Proctor SDK (/en/api-reference/api-ref/flexible-classroom/proctor-sdk/ios) > For AI agents: see the complete documentation index at [llms.txt](/llms.txt). This Swift API reference covers the Agora Proctor SDK APIs for launching and managing Flexible Classroom proctoring scenarios on iOS. ## AgoraProctorSDK [#agoraproctorsdk-2] `AgoraProctorSDK` is the basic interface of the Agora Proctor SDK and provides the main methods for a flexible classroom in proctoring scenarios. ### init [#init] ```swift - (instancetype)init:(AgoraProctorLaunchConfig *)config delegate:(id _Nullable)delegate; ``` Initializes the `AgoraProctorSDK` instance. **Parameters** | Parameter | Description | | :--------- | :--------------------------------------------------------------------------------------------------------------- | | `config` | Configuration for a flexible classroom. See [AgoraProctorLaunchConfig](#agoraproctorlaunchconfig). | | `delegate` | (Optional) The event handler for the Agora Proctor SDK. See [AgoraProctorSDKDelegate](#agoraproctorsdkdelegate). | ### launch [#launch-2] ```swift - (void)launch:(void (^)(void))success failure:(void (^)(NSError *))failure; ``` Launches a flexible classroom in a proctoring scenario. **Parameters** | Parameter | Description | | :-------- | :----------------------------------------------------------------- | | `success` | The callback triggered by a successful launch. | | `failure` | The callback triggered by a failed launch, which returns an error. | ### version [#version] ```swift - (NSString *)version; ``` Gets the SDK version. **Returns** The SDK version. ## AgoraProctorSDKDelegate [#agoraproctorsdkdelegate] `AgoraProctorSDKDelegate` reports events related to SDK status to your app. ### didExit [#didexit] ```swift - (void)proctorSDK:(AgoraProctorSDK *)proctor didExit:(AgoraProctorExitReason)reason; ``` This callback is triggered when a user exits or is kicked from the room. | Parameter | Description | | :-------- | :------------------------------------------------------------------------------ | | `reason` | The reason for the exit. See [AgoraProctorExitReason](#agoraproctorexitreason). | ## Objects [#objects] ### AgoraProctorLaunchConfig [#agoraproctorlaunchconfig] ```swift @interface AgoraProctorLaunchConfig : NSObject @property (nonatomic, copy) NSString *userName; @property (nonatomic, copy) NSString *userUuid; @property (nonatomic, assign) AgoraProctorUserRole userRole; @property (nonatomic, copy) NSString *roomName; @property (nonatomic, copy) NSString *roomUuid; @property (nonatomic, copy) NSString *appId; @property (nonatomic, copy) NSString *token; @property (nonatomic, assign) AgoraProctorRegion region; @property (nonatomic, strong, nullable) AgoraProctorMediaOptions *mediaOptions; @property (nonatomic, copy, nullable) NSDictionary *userProperties; @property (nonatomic, strong) NSDictionary *widgets; - (instancetype)initWithUserName:(NSString *)userName userUuid:(NSString *)userUuid userRole:(AgoraProctorUserRole)userRole roomName:(NSString *)roomName roomUuid:(NSString *)roomUuid appId:(NSString *)appId token:(NSString *)token; - (instancetype)initWithUserName:(NSString *)userName userUuid:(NSString *)userUuid userRole:(AgoraProctorUserRole)userRole roomName:(NSString *)roomName roomUuid:(NSString *)roomUuid appId:(NSString *)appId token:(NSString *)token region:(AgoraProctorRegion)region mediaOptions:(AgoraProctorMediaOptions * _Nullable)mediaOptions userProperties:(NSDictionary * _Nullable)userProperties; ``` The classroom launching configuration used in [launch](#launch). | Property | Description | | :--------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | `userName` | The user name for display in the classroom. This value must be less than 64 bytes. | | `userUuid` | The user ID. This is the globally unique identifier of a user. This value must be the same as the User ID that you use for generating a Signaling token. The string length must be less than 64 bytes. Supported characters include lowercase and uppercase English letters, numbers, spaces, and the symbols listed in the Web `userUuid` description. | | `userRole` | The user's role in the classroom. See [AgoraProctorUserRole](#agoraproctoruserrole). | | `roomName` | The room name for display in the classroom. The string length must be less than 64 bytes. | | `roomUuid` | The room ID. This is the globally unique identifier of a classroom. This value must be less than 64 bytes. Supported characters include lowercase and uppercase English letters, numbers, spaces, and the symbols listed in the Web `userUuid` description. | | `appId` | The Agora App ID. See [Get the Agora App ID](/en/realtime-media/flexible-classroom/build/manage-agora-account#get-the-app-id). | | `token` | The Signaling token used for authentication. See [Secure authentication with tokens](/en/realtime-media/flexible-classroom/build/set-up-your-account-and-authentication/authentication-workflow). | | `region` | The region where the classrooms are. All clients must use the same region to communicate with each other. Supported regions are `CN` for Mainland China, `NA` for North America, `EU` for Europe, and `AP` for Asia Pacific. | | `mediaOptions` | Media options, including the media stream encryption configuration. See [AgoraProctorMediaOptions](#agoraproctormediaoptions). | | `userProperties` | User properties customized by the developer. | | `widgets` | Pass in `widgetId` and `AgoraWidgetConfig`. | ### AgoraProctorMediaOptions [#agoraproctormediaoptions] ```swift @interface AgoraProctorMediaOptions : NSObject @property (nonatomic, strong, nullable) AgoraProctorMediaEncryptionConfig *encryptionConfig; @property (nonatomic, strong, nullable) AgoraProctorVideoEncoderConfig *videoEncoderConfig; @property (nonatomic, assign) AgoraProctorLatencyLevel latencyLevel; - (instancetype)initWithEncryptionConfig:(AgoraProctorMediaEncryptionConfig * _Nullable)encryptionConfig videoEncoderConfig:(AgoraProctorVideoEncoderConfig * _Nullable)videoEncoderConfig latencyLevel:(AgoraProctorLatencyLevel)latencyLevel; ``` Media options. Set in [AgoraProctorLaunchConfig](#agoraproctorlaunchconfig). | Property | Description | | :------------------- | :-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `encryptionConfig` | (Optional) The media stream encryption configuration. See [AgoraProctorMediaEncryptionConfig](#agoraproctormediaencryptionconfig). | | `videoEncoderConfig` | (Optional) The video encoder configuration. See [AgoraProctorVideoEncoderConfig](#agoraproctorvideoencoderconfig). | | `latencyLevel` | The latency level of an audience member. This property does not apply to cohosting users. The default value is `low`, which means low latency. See [AgoraProctorLatencyLevel](#agoraproctorlatencylevel). | ### AgoraProctorMediaEncryptionConfig [#agoraproctormediaencryptionconfig] ```swift @interface AgoraProctorMediaEncryptionConfig : NSObject @property (nonatomic, assign) AgoraProctorMediaEncryptionMode mode; @property (nonatomic, copy) NSString *key; - (instancetype)initWithMode:(AgoraProctorMediaEncryptionMode)mode key:(NSString *)key; ``` The media stream encryption configuration used in [AgoraProctorMediaOptions](#agoraproctormediaoptions). | Property | Description | | :------- | :-------------------------------------------------------------------------------------------- | | `mode` | The encryption mode. See [AgoraProctorMediaEncryptionMode](#agoraproctormediaencryptionmode). | | `key` | The encryption key. | ### AgoraProctorVideoEncoderConfig [#agoraproctorvideoencoderconfig] ```swift @interface AgoraProctorVideoEncoderConfig : NSObject @property (nonatomic, assign) NSUInteger dimensionWidth; @property (nonatomic, assign) NSUInteger dimensionHeight; @property (nonatomic, assign) NSUInteger frameRate; @property (nonatomic, assign) NSUInteger bitRate; @property (nonatomic, assign) AgoraProctorMirrorMode mirrorMode; - (instancetype)initWithDimensionWidth:(NSUInteger)dimensionWidth dimensionHeight:(NSUInteger)dimensionHeight frameRate:(NSUInteger)frameRate bitRate:(NSUInteger)bitRate mirrorMode:(AgoraProctorMirrorMode)mirrorMode; ``` The video encoder configuration used in [AgoraProctorMediaOptions](#agoraproctormediaoptions). | Property | Description | | :---------------- | :-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `dimensionWidth` | The width of the video frame in pixels. The default value is 320. | | `dimensionHeight` | The height of the video frame in pixels. The default value is 240. | | `frameRate` | The frame rate of the video in FPS. The default value is 15. | | `bitRate` | The bitrate of the video in Kbps. The default value is 200. | | `mirrorMode` | Whether video mirror mode is enabled. The default value is `AgoraProctorMirrorModeDisable`, which means mirror mode is disabled. See [AgoraProctorMirrorMode](#agoraproctormirrormode). | ## Enums [#enums] ### AgoraProctorMirrorMode [#agoraproctormirrormode] Whether to enable mirror mode, used in [AgoraProctorVideoEncoderConfig](#agoraproctorvideoencoderconfig). | Value | Description | | :--------- | :------------------------ | | `disabled` | `0`: Disable mirror mode. | | `enabled` | `1`: Enable mirror mode. | ### AgoraProctorRegion [#agoraproctorregion] The region where classrooms are, used in [AgoraProctorLaunchConfig](#agoraproctorlaunchconfig). | Value | Description | | :---- | :------------------- | | `CN` | `0`: Mainland China. | | `NA` | `1`: North America. | | `EU` | `2`: Europe. | | `AP` | `3`: Asia Pacific. | ### AgoraProctorExitReason [#agoraproctorexitreason] The reason for exiting the Agora Proctor SDK, used in the [didExit](#didexit) callback. | Value | Description | | :-------- | :------------------------------ | | `normal` | User exits the room normally. | | `kickOut` | User is kicked out of the room. | ### AgoraProctorLatencyLevel [#agoraproctorlatencylevel] The latency level of an audience member, used in [AgoraProctorLaunchConfig](#agoraproctorlaunchconfig). | Value | Description | | :--------- | :------------------------------------------------------------------------------------------------ | | `low` | `1`: Low latency. The latency from the sender to the receiver is between 1500 ms and 2000 ms. | | `ultraLow` | `2`: Ultra-low latency. The latency from the sender to the receiver is between 400 ms and 800 ms. | ### AgoraProctorUserRole [#agoraproctoruserrole] The user role in the classroom, used in [AgoraProctorLaunchConfig](#agoraproctorlaunchconfig). | Value | Description | | :---------- | :-------------------- | | `invalid` | `0`: Recording robot. | | `teacher` | `1`: Teacher. | | `student` | `2`: Student. | | `assistant` | `3`: Assistant. | | `observer` | `4`: Observer. | ### AgoraProctorMediaEncryptionMode [#agoraproctormediaencryptionmode] The media stream encryption mode, used in [AgoraProctorMediaEncryptionConfig](#agoraproctormediaencryptionconfig). | Value | Description | | :----------- | :------------------------------------------------------------------------------------------------------------------------------- | | `None` | `0`: No encryption. | | `AES128XTS` | `1`: 128-bit AES encryption, XTS mode. | | `AES128ECB` | `2`: 128-bit AES encryption, ECB mode. | | `AES256XTS` | `3`: 256-bit AES encryption, XTS mode. | | `SM4128ECB` | `4`: 128-bit SM4 encryption, ECB mode. | | `AES128GCM` | `5`: 128-bit AES encryption, GCM mode. | | `AES256GCM` | `6`: 256-bit AES encryption, GCM mode. | | `AES128GCM2` | `7`: Enhanced 128-bit AES encryption, GCM mode. Compared with `AES128GCM`, this mode is more secure and requires setting a salt. | | `AES256GCM2` | `8`: Enhanced 256-bit AES encryption, GCM mode. Compared with `AES256GCM`, this mode is more secure and requires setting a salt. |