microsoft-cognitiveservices-speech-sdk/distrib/lib/src/common.speech/ServiceRecognizerBase.d.ts.map

Microsoft Cognitive Services Speech SDK for JavaScript

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Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT license.\r\n\r\nimport { ReplayableAudioNode } from \"../common.browser/Exports.js\";\r\nimport { ConnectionOpenResponse } from \"../common/ConnectionOpenResponse.js\";\r\nimport {\r\n    ArgumentNullError,\r\n    ConnectionClosedEvent,\r\n    ConnectionEvent,\r\n    ConnectionState,\r\n    createNoDashGuid,\r\n    EventSource,\r\n    IAudioSource,\r\n    IAudioStreamNode,\r\n    IConnection,\r\n    IDisposable,\r\n    IStreamChunk,\r\n    MessageType,\r\n    ServiceEvent,\r\n    Timeout\r\n} from \"../common/Exports.js\";\r\nimport { AudioStreamFormatImpl } from \"../sdk/Audio/AudioStreamFormat.js\";\r\nimport { SpeakerRecognitionModel } from \"../sdk/SpeakerRecognitionModel.js\";\r\nimport {\r\n    CancellationErrorCode,\r\n    CancellationReason,\r\n    PropertyId,\r\n    RecognitionEventArgs,\r\n    Recognizer,\r\n    SessionEventArgs,\r\n    SpeakerRecognitionResult,\r\n    SpeechRecognitionResult,\r\n    OutputFormat\r\n} from \"../sdk/Exports.js\";\r\nimport { Callback } from \"../sdk/Transcription/IConversation.js\";\r\nimport {\r\n    AgentConfig,\r\n    DynamicGrammarBuilder,\r\n    ISpeechConfigAudioDevice,\r\n    RecognitionMode,\r\n    RequestSession,\r\n    SpeechContext,\r\n    SpeechDetected,\r\n    type,\r\n    OutputFormatPropertyName\r\n} from \"./Exports.js\";\r\nimport {\r\n    AuthInfo,\r\n    IAuthentication,\r\n} from \"./IAuthentication.js\";\r\nimport { IConnectionFactory } from \"./IConnectionFactory.js\";\r\nimport { RecognizerConfig } from \"./RecognizerConfig.js\";\r\nimport { SpeechConnectionMessage } from \"./SpeechConnectionMessage.Internal.js\";\r\n\r\ninterface CustomModel {\r\n    language: string;\r\n    endpoint: string;\r\n}\r\n\r\nexport interface PhraseDetection {\r\n    customModels?: CustomModel[];\r\n    onInterim?: { action: string };\r\n    onSuccess?: { action: string };\r\n    mode?: string;\r\n    INTERACTIVE?: Segmentation;\r\n    CONVERSATION?: Segmentation;\r\n    DICTATION?: Segmentation;\r\n    speakerDiarization?: SpeakerDiarization;\r\n}\r\n\r\nexport interface SpeakerDiarization {\r\n    mode?: string;\r\n    audioSessionId?: string;\r\n    audioOffsetMs?: number;\r\n    identityProvider?: string;\r\n    diarizeIntermediates?: boolean;\r\n}\r\n\r\nexport interface Segmentation {\r\n    segmentation: {\r\n        mode: string;\r\n        segmentationSilenceTimeoutMs?: number;\r\n        segmentationForcedTimeoutMs?: number;\r\n    };\r\n}\r\n\r\nexport abstract class ServiceRecognizerBase implements IDisposable {\r\n    private privAuthentication: IAuthentication;\r\n    private privConnectionFactory: IConnectionFactory;\r\n\r\n    // A promise for a configured connection.\r\n    // Do not consume directly, call fetchConnection instead.\r\n    private privConnectionConfigurationPromise: Promise<IConnection> = undefined;\r\n\r\n    // A promise for a connection, but one that has not had the speech context sent yet.\r\n    // Do not consume directly, call fetchConnection instead.\r\n    private privConnectionPromise: Promise<IConnection> = undefined;\r\n    private privAuthFetchEventId: string;\r\n    private privIsDisposed: boolean;\r\n    private privMustReportEndOfStream: boolean;\r\n    private privConnectionEvents: EventSource<ConnectionEvent>;\r\n    private privServiceEvents: EventSource<ServiceEvent>;\r\n    private privDynamicGrammar: DynamicGrammarBuilder;\r\n    private privAgentConfig: AgentConfig;\r\n    private privServiceHasSentMessage: boolean;\r\n    private privActivityTemplate: string;\r\n    private privSetTimeout: (cb: () => void, delay: number) => number = setTimeout;\r\n    private privAudioSource: IAudioSource;\r\n    private privIsLiveAudio: boolean = false;\r\n    private privAverageBytesPerMs: number = 0;\r\n    protected privSpeechContext: SpeechContext;\r\n    protected privRequestSession: RequestSession;\r\n    protected privConnectionId: string;\r\n    protected privDiarizationSessionId: string;\r\n    protected privRecognizerConfig: RecognizerConfig;\r\n    protected privRecognizer: Recognizer;\r\n    protected privSuccessCallback: (e: SpeechRecognitionResult) => void;\r\n    protected privErrorCallback: (e: string) => void;\r\n    protected privEnableSpeakerId: boolean = false;\r\n    protected privExpectContentAssessmentResponse: boolean = false;\r\n\r\n    public constructor(\r\n        authentication: IAuthentication,\r\n        connectionFactory: IConnectionFactory,\r\n        audioSource: IAudioSource,\r\n        recognizerConfig: RecognizerConfig,\r\n        recognizer: Recognizer) {\r\n\r\n        if (!authentication) {\r\n            throw new ArgumentNullError(\"authentication\");\r\n        }\r\n\r\n        if (!connectionFactory) {\r\n            throw new ArgumentNullError(\"connectionFactory\");\r\n        }\r\n\r\n        if (!audioSource) {\r\n            throw new ArgumentNullError(\"audioSource\");\r\n        }\r\n\r\n        if (!recognizerConfig) {\r\n            throw new ArgumentNullError(\"recognizerConfig\");\r\n        }\r\n\r\n        this.privEnableSpeakerId = recognizerConfig.isSpeakerDiarizationEnabled;\r\n        this.privMustReportEndOfStream = false;\r\n        this.privAuthentication = authentication;\r\n        this.privConnectionFactory = connectionFactory;\r\n        this.privAudioSource = audioSource;\r\n        this.privRecognizerConfig = recognizerConfig;\r\n        this.privIsDisposed = false;\r\n        this.privRecognizer = recognizer;\r\n        this.privRequestSession = new RequestSession(this.privAudioSource.id());\r\n        this.privConnectionEvents = new EventSource<ConnectionEvent>();\r\n        this.privServiceEvents = new EventSource<ServiceEvent>();\r\n        this.privDynamicGrammar = new DynamicGrammarBuilder();\r\n        this.privSpeechContext = new SpeechContext(this.privDynamicGrammar);\r\n        this.privAgentConfig = new AgentConfig();\r\n        const webWorkerLoadType: string = this.privRecognizerConfig.parameters.getProperty(PropertyId.WebWorkerLoadType, \"on\").toLowerCase();\r\n        if (webWorkerLoadType === \"on\" && typeof (Blob) !== \"undefined\" && typeof (Worker) !== \"undefined\") {\r\n            this.privSetTimeout = Timeout.setTimeout;\r\n        } else {\r\n            if (typeof window !== \"undefined\") {\r\n                // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment\r\n                this.privSetTimeout = window.setTimeout.bind(window);\r\n            }\r\n            if (typeof globalThis !== \"undefined\") {\r\n                // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment\r\n                this.privSetTimeout = globalThis.setTimeout.bind(globalThis);\r\n            }\r\n        }\r\n\r\n        this.connectionEvents.attach((connectionEvent: ConnectionEvent): void => {\r\n            if (connectionEvent.name === \"ConnectionClosedEvent\") {\r\n                const connectionClosedEvent = connectionEvent as ConnectionClosedEvent;\r\n                if (connectionClosedEvent.statusCode === 1003 ||\r\n                    connectionClosedEvent.statusCode === 1007 ||\r\n                    connectionClosedEvent.statusCode === 1002 ||\r\n                    connectionClosedEvent.statusCode === 4000 ||\r\n                    this.privRequestSession.numConnectionAttempts > this.privRecognizerConfig.maxRetryCount\r\n                ) {\r\n                    void this.cancelRecognitionLocal(CancellationReason.Error,\r\n                        connectionClosedEvent.statusCode === 1007 ? CancellationErrorCode.BadRequestParameters : CancellationErrorCode.ConnectionFailure,\r\n                        `${connectionClosedEvent.reason} websocket error code: ${connectionClosedEvent.statusCode}`);\r\n                }\r\n            }\r\n        });\r\n\r\n        if (this.privEnableSpeakerId) {\r\n            this.privDiarizationSessionId = createNoDashGuid();\r\n        }\r\n\r\n        this.setLanguageIdJson();\r\n        this.setOutputDetailLevelJson();\r\n    }\r\n\r\n    protected setTranslationJson(): void {\r\n        const targetLanguages: string = this.privRecognizerConfig.parameters.getProperty(PropertyId.SpeechServiceConnection_TranslationToLanguages, undefined);\r\n        if (targetLanguages !== undefined) {\r\n            const languages = targetLanguages.split(\",\");\r\n            const translationVoice: string =  this.privRecognizerConfig.parameters.getProperty(PropertyId.SpeechServiceConnection_TranslationVoice, undefined);\r\n            const action = ( translationVoice !== undefined ) ? \"Synthesize\" : \"None\";\r\n            this.privSpeechContext.setSection(\"translation\", {\r\n                onSuccess: { action },\r\n                output: { interimResults: { mode: \"Always\" } },\r\n                targetLanguages: languages,\r\n            });\r\n\r\n            if (translationVoice !== undefined) {\r\n                const languageToVoiceMap: { [key: string]: string } = {};\r\n                for (const lang of languages) {\r\n                    languageToVoiceMap[lang] = translationVoice;\r\n                }\r\n                this.privSpeechContext.setSection(\"synthesis\", {\r\n                    defaultVoices: languageToVoiceMap\r\n                });\r\n            }\r\n        }\r\n    }\r\n\r\n    protected setSpeechSegmentationTimeoutJson(): void {\r\n        const speechSegmentationSilenceTimeoutMs: string = this.privRecognizerConfig.parameters.getProperty(PropertyId.Speech_SegmentationSilenceTimeoutMs, undefined);\r\n        const speechSegmentationMaximumTimeMs: string = this.privRecognizerConfig.parameters.getProperty(PropertyId.Speech_SegmentationMaximumTimeMs, undefined);\r\n        const speechSegmentationStrategy: string = this.privRecognizerConfig.parameters.getProperty(PropertyId.Speech_SegmentationStrategy, undefined);\r\n        const segmentation: Segmentation = {\r\n            segmentation: {\r\n                mode: \"\"\r\n            }\r\n        };\r\n        let configuredSegment = false;\r\n\r\n        if (speechSegmentationStrategy !== undefined) {\r\n            configuredSegment = true;\r\n            let segMode: string = \"\";\r\n            switch (speechSegmentationStrategy.toLowerCase()) {\r\n                case \"default\":\r\n                    break;\r\n                case \"time\":\r\n                    segMode = \"Custom\";\r\n                    break;\r\n                case \"semantic\":\r\n                    segMode = \"Semantic\";\r\n                    break;\r\n            }\r\n\r\n            segmentation.segmentation.mode = segMode;\r\n        }\r\n\r\n        if (speechSegmentationSilenceTimeoutMs !== undefined) {\r\n            configuredSegment = true;\r\n            const segmentationSilenceTimeoutMs: number = parseInt(speechSegmentationSilenceTimeoutMs, 10);\r\n            segmentation.segmentation.mode = \"Custom\";\r\n            segmentation.segmentation.segmentationSilenceTimeoutMs = segmentationSilenceTimeoutMs;\r\n        }\r\n\r\n        if (speechSegmentationMaximumTimeMs !== undefined) {\r\n            configuredSegment = true;\r\n            const segmentationMaximumTimeMs: number = parseInt(speechSegmentationMaximumTimeMs, 10);\r\n            segmentation.segmentation.mode = \"Custom\";\r\n            segmentation.segmentation.segmentationForcedTimeoutMs = segmentationMaximumTimeMs;\r\n        }\r\n\r\n        if (configuredSegment) {\r\n            const recoMode = this.recognitionMode === RecognitionMode.Conversation ? \"CONVERSATION\" :\r\n                this.recognitionMode === RecognitionMode.Dictation ? \"DICTATION\" : \"INTERACTIVE\";\r\n            const phraseDetection = this.privSpeechContext.getSection(\"phraseDetection\") as PhraseDetection;\r\n            phraseDetection.mode = recoMode;\r\n            phraseDetection[recoMode] = segmentation;\r\n            this.privSpeechContext.setSection(\"phraseDetection\", phraseDetection);\r\n        }\r\n    }\r\n\r\n    protected setLanguageIdJson(): void {\r\n        const phraseDetection = this.privSpeechContext.getSection(\"phraseDetection\") as PhraseDetection;\r\n        if (this.privRecognizerConfig.autoDetectSourceLanguages !== undefined) {\r\n            const sourceLanguages: string[] = this.privRecognizerConfig.autoDetectSourceLanguages.split(\",\");\r\n\r\n            let speechContextLidMode;\r\n            if (this.privRecognizerConfig.languageIdMode === \"Continuous\") {\r\n                speechContextLidMode = \"DetectContinuous\";\r\n            } else {// recognizerConfig.languageIdMode === \"AtStart\"\r\n                speechContextLidMode = \"DetectAtAudioStart\";\r\n            }\r\n\r\n            this.privSpeechContext.setSection(\"languageId\", {\r\n                Priority: \"PrioritizeLatency\",\r\n                languages: sourceLanguages,\r\n                mode: speechContextLidMode,\r\n                onSuccess: { action: \"Recognize\" },\r\n                onUnknown: { action: \"None\" }\r\n            });\r\n            this.privSpeechContext.setSection(\"phraseOutput\", {\r\n                interimResults: {\r\n                    resultType: \"Auto\"\r\n                },\r\n                phraseResults: {\r\n                    resultType: \"Always\"\r\n                }\r\n            });\r\n            const customModels: CustomModel[] = this.privRecognizerConfig.sourceLanguageModels;\r\n            if (customModels !== undefined) {\r\n                phraseDetection.customModels = customModels;\r\n                phraseDetection.onInterim = { action: \"None\" };\r\n                phraseDetection.onSuccess = { action: \"None\" };\r\n            }\r\n        }\r\n        const targetLanguages: string = this.privRecognizerConfig.parameters.getProperty(PropertyId.SpeechServiceConnection_TranslationToLanguages, undefined);\r\n        if (targetLanguages !== undefined) {\r\n            phraseDetection.onInterim = { action: \"Translate\" };\r\n            phraseDetection.onSuccess = { action: \"Translate\" };\r\n            this.privSpeechContext.setSection(\"phraseOutput\", {\r\n                interimResults: {\r\n                    resultType: \"None\"\r\n                },\r\n                phraseResults: {\r\n                    resultType: \"None\"\r\n                }\r\n            });\r\n        }\r\n\r\n        this.privSpeechContext.setSection(\"phraseDetection\", phraseDetection);\r\n    }\r\n\r\n    protected setOutputDetailLevelJson(): void {\r\n        if (this.privEnableSpeakerId) {\r\n            const requestWordLevelTimestamps: string = this.privRecognizerConfig.parameters.getProperty(PropertyId.SpeechServiceResponse_RequestWordLevelTimestamps, \"false\").toLowerCase();\r\n            if (requestWordLevelTimestamps === \"true\") {\r\n                this.privSpeechContext.setWordLevelTimings();\r\n            } else {\r\n                const outputFormat: string = this.privRecognizerConfig.parameters.getProperty(OutputFormatPropertyName, OutputFormat[OutputFormat.Simple]).toLowerCase();\r\n                if (outputFormat === OutputFormat[OutputFormat.Detailed].toLocaleLowerCase()) {\r\n                    this.privSpeechContext.setDetailedOutputFormat();\r\n                }\r\n            }\r\n        }\r\n    }\r\n\r\n    public get isSpeakerDiarizationEnabled(): boolean {\r\n        return this.privEnableSpeakerId;\r\n    }\r\n\r\n    public get audioSource(): IAudioSource {\r\n        return this.privAudioSource;\r\n    }\r\n\r\n    public get speechContext(): SpeechContext {\r\n        return this.privSpeechContext;\r\n    }\r\n\r\n    public get dynamicGrammar(): DynamicGrammarBuilder {\r\n        return this.privDynamicGrammar;\r\n    }\r\n\r\n    public get agentConfig(): AgentConfig {\r\n        return this.privAgentConfig;\r\n    }\r\n\r\n    public set conversationTranslatorToken(token: string) {\r\n        this.privRecognizerConfig.parameters.setProperty(PropertyId.ConversationTranslator_Token, token);\r\n    }\r\n\r\n    public set voiceProfileType(type: string) {\r\n        this.privRecognizerConfig.parameters.setProperty(PropertyId.SpeechServiceConnection_SpeakerIdMode, type);\r\n    }\r\n\r\n    public set authentication(auth: IAuthentication) {\r\n        this.privAuthentication = auth;\r\n    }\r\n\r\n    public isDisposed(): boolean {\r\n        return this.privIsDisposed;\r\n    }\r\n\r\n    public async dispose(reason?: string): Promise<void> {\r\n        this.privIsDisposed = true;\r\n        if (this.privConnectionConfigurationPromise !== undefined) {\r\n            try {\r\n                const connection: IConnection = await this.privConnectionConfigurationPromise;\r\n                await connection.dispose(reason);\r\n            } catch (error) {\r\n                // The connection is in a bad state. But we're trying to kill it, so...\r\n                return;\r\n            }\r\n        }\r\n    }\r\n\r\n    public get connectionEvents(): EventSource<ConnectionEvent> {\r\n        return this.privConnectionEvents;\r\n    }\r\n\r\n    public get serviceEvents(): EventSource<ServiceEvent> {\r\n        return this.privServiceEvents;\r\n    }\r\n\r\n    public get recognitionMode(): RecognitionMode {\r\n        return this.privRecognizerConfig.recognitionMode;\r\n    }\r\n\r\n    protected recognizeOverride: (recoMode: RecognitionMode, sc: (e: SpeechRecognitionResult) => void, ec: (e: string) => void) => Promise<void> = undefined;\r\n\r\n    public recognizeSpeaker: (model: SpeakerRecognitionModel) => Promise<SpeakerRecognitionResult> = undefined;\r\n\r\n    public async recognize(\r\n        recoMode: RecognitionMode,\r\n        successCallback: (e: SpeechRecognitionResult) => void,\r\n        errorCallBack: (e: string) => void,\r\n    ): Promise<void> {\r\n\r\n        if (this.recognizeOverride !== undefined) {\r\n            await this.recognizeOverride(recoMode, successCallback, errorCallBack);\r\n            return;\r\n        }\r\n        // Clear the existing configuration promise to force a re-transmission of config and context.\r\n        this.privConnectionConfigurationPromise = undefined;\r\n        this.privRecognizerConfig.recognitionMode = recoMode;\r\n        this.setSpeechSegmentationTimeoutJson();\r\n        this.setTranslationJson();\r\n\r\n        this.privSuccessCallback = successCallback;\r\n        this.privErrorCallback = errorCallBack;\r\n\r\n        this.privRequestSession.startNewRecognition();\r\n        this.privRequestSession.listenForServiceTelemetry(this.privAudioSource.events);\r\n\r\n        // Start the connection to the service. The promise this will create is stored and will be used by configureConnection().\r\n        const conPromise: Promise<IConnection> = this.connectImpl();\r\n        let audioNode: ReplayableAudioNode;\r\n\r\n        try {\r\n            const audioStreamNode: IAudioStreamNode = await this.audioSource.attach(this.privRequestSession.audioNodeId);\r\n            const format: AudioStreamFormatImpl = await this.audioSource.format;\r\n            const deviceInfo: ISpeechConfigAudioDevice = await this.audioSource.deviceInfo;\r\n            this.privIsLiveAudio = deviceInfo.type && deviceInfo.type === type.Microphones;\r\n\r\n            audioNode = new ReplayableAudioNode(audioStreamNode, format.avgBytesPerSec);\r\n            await this.privRequestSession.onAudioSourceAttachCompleted(audioNode, false);\r\n            this.privRecognizerConfig.SpeechServiceConfig.Context.audio = { source: deviceInfo };\r\n\r\n        } catch (error) {\r\n            await this.privRequestSession.onStopRecognizing();\r\n            throw error;\r\n        }\r\n\r\n        try {\r\n            await conPromise;\r\n        } catch (error) {\r\n            await this.cancelRecognitionLocal(CancellationReason.Error, CancellationErrorCode.ConnectionFailure, error as string);\r\n            return;\r\n        }\r\n\r\n        const sessionStartEventArgs: SessionEventArgs = new SessionEventArgs(this.privRequestSession.sessionId);\r\n\r\n        if (!!this.privRecognizer.sessionStarted) {\r\n            this.privRecognizer.sessionStarted(this.privRecognizer, sessionStartEventArgs);\r\n        }\r\n\r\n        void this.receiveMessage();\r\n        const audioSendPromise = this.sendAudio(audioNode);\r\n\r\n        audioSendPromise.catch(async (error: string): Promise<void> => {\r\n            await this.cancelRecognitionLocal(CancellationReason.Error, CancellationErrorCode.RuntimeError, error);\r\n        });\r\n\r\n        return;\r\n    }\r\n\r\n    public async stopRecognizing(): Promise<void> {\r\n        if (this.privRequestSession.isRecognizing) {\r\n            try {\r\n                await this.audioSource.turnOff();\r\n                await this.sendFinalAudio();\r\n                await this.privRequestSession.onStopRecognizing();\r\n                await this.privRequestSession.turnCompletionPromise;\r\n            } finally {\r\n                await this.privRequestSession.dispose();\r\n            }\r\n        }\r\n        return;\r\n    }\r\n\r\n    public async connect(): Promise<void> {\r\n        await this.connectImpl();\r\n        return Promise.resolve();\r\n    }\r\n\r\n    public connectAsync(cb?: Callback, err?: Callback): void {\r\n        this.connectImpl().then((): void => {\r\n            try {\r\n                if (!!cb) {\r\n                    cb();\r\n                }\r\n            } catch (e) {\r\n                if (!!err) {\r\n                    err(e);\r\n                }\r\n            }\r\n        }, (reason: any): void => {\r\n            try {\r\n                if (!!err) {\r\n                    err(reason);\r\n                }\r\n                /* eslint-disable no-empty */\r\n            } catch (error) {\r\n            }\r\n        });\r\n    }\r\n\r\n    protected disconnectOverride: () => Promise<void> = undefined;\r\n\r\n    public async disconnect(): Promise<void> {\r\n        await this.cancelRecognitionLocal(CancellationReason.Error,\r\n            CancellationErrorCode.NoError,\r\n            \"Disconnecting\");\r\n\r\n        if (this.disconnectOverride !== undefined) {\r\n            await this.disconnectOverride();\r\n        }\r\n\r\n        if (this.privConnectionPromise !== undefined) {\r\n            try {\r\n                await (await this.privConnectionPromise).dispose();\r\n            } catch (error) {\r\n\r\n            }\r\n        }\r\n        this.privConnectionPromise = undefined;\r\n    }\r\n\r\n    // Called when telemetry data is sent to the service.\r\n    // Used for testing Telemetry capture.\r\n    public static telemetryData: (json: string) => void;\r\n    public static telemetryDataEnabled: boolean = true;\r\n\r\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\r\n    public sendMessage(message: string): Promise<void> {\r\n        return;\r\n    }\r\n\r\n    public async sendNetworkMessage(path: string, payload: string | ArrayBuffer): Promise<void> {\r\n        const type: MessageType = typeof payload === \"string\" ? MessageType.Text : MessageType.Binary;\r\n        const contentType: string = typeof payload === \"string\" ? \"application/json\" : \"\";\r\n\r\n        const connection: IConnection = await this.fetchConnection();\r\n        return connection.send(new SpeechConnectionMessage(type, path, this.privRequestSession.requestId, contentType, payload));\r\n    }\r\n\r\n    public set activityTemplate(messagePayload: string) {\r\n        this.privActivityTemplate = messagePayload;\r\n    }\r\n\r\n    public get activityTemplate(): string {\r\n        return this.privActivityTemplate;\r\n    }\r\n\r\n    public set expectContentAssessmentResponse(value: boolean) {\r\n        this.privExpectContentAssessmentResponse = value;\r\n    }\r\n\r\n    protected abstract processTypeSpecificMessages(\r\n        connectionMessage: SpeechConnectionMessage,\r\n        successCallback?: (e: SpeechRecognitionResult) => void,\r\n        errorCallBack?: (e: string) => void): Promise<boolean>;\r\n\r\n    protected async sendTelemetryData(): Promise<void> {\r\n        const telemetryData = this.privRequestSession.getTelemetry();\r\n        if (ServiceRecognizerBase.telemetryDataEnabled !== true ||\r\n            this.privIsDisposed ||\r\n            null === telemetryData) {\r\n            return;\r\n        }\r\n\r\n        if (!!ServiceRecognizerBase.telemetryData) {\r\n            try {\r\n                ServiceRecognizerBase.telemetryData(telemetryData);\r\n                /* eslint-disable no-empty */\r\n            } catch { }\r\n        }\r\n\r\n        const connection: IConnection = await this.fetchConnection();\r\n        await connection.send(new SpeechConnectionMessage(\r\n            MessageType.Text,\r\n            \"telemetry\",\r\n            this.privRequestSession.requestId,\r\n            \"application/json\",\r\n            telemetryData));\r\n    }\r\n\r\n    // Cancels recognition.\r\n    protected abstract cancelRecognition(\r\n        sessionId: string,\r\n        requestId: string,\r\n        cancellationReason: CancellationReason,\r\n        errorCode: CancellationErrorCode,\r\n        error: string): void;\r\n\r\n    // Cancels recognition.\r\n    protected async cancelRecognitionLocal(\r\n        cancellationReason: CancellationReason,\r\n        errorCode: CancellationErrorCode,\r\n        error: string): Promise<void> {\r\n\r\n        if (!!this.privRequestSession.isRecognizing) {\r\n            await this.privRequestSession.onStopRecognizing();\r\n\r\n            this.cancelRecognition(\r\n                this.privRequestSession.sessionId,\r\n                this.privRequestSession.requestId,\r\n                cancellationReason,\r\n                errorCode,\r\n                error);\r\n        }\r\n    }\r\n\r\n    protected receiveMessageOverride: () => Promise<void> = undefined;\r\n\r\n    protected async receiveMessage(): Promise<void> {\r\n        try {\r\n            if (this.privIsDisposed) {\r\n                // We're done.\r\n                return;\r\n            }\r\n\r\n            let connection = await this.fetchConnection();\r\n            const message = await connection.read();\r\n\r\n            if (this.receiveMessageOverride !== undefined) {\r\n                return this.receiveMessageOverride();\r\n            }\r\n\r\n            // indicates we are draining the queue and it came with no message;\r\n            if (!message) {\r\n                return this.receiveMessage();\r\n            }\r\n\r\n            this.privServiceHasSentMessage = true;\r\n            const connectionMessage = SpeechConnectionMessage.fromConnectionMessage(message);\r\n\r\n            if (connectionMessage.requestId.toLowerCase() === this.privRequestSession.requestId.toLowerCase()) {\r\n                switch (connectionMessage.path.toLowerCase()) {\r\n                    case \"turn.start\":\r\n                        this.privMustReportEndOfStream = true;\r\n                        this.privRequestSession.onServiceTurnStartResponse();\r\n                        break;\r\n\r\n                    case \"speech.startdetected\":\r\n                        const speechStartDetected: SpeechDetected = SpeechDetected.fromJSON(connectionMessage.textBody, this.privRequestSession.currentTurnAudioOffset);\r\n                        const speechStartEventArgs = new RecognitionEventArgs(speechStartDetected.Offset, this.privRequestSession.sessionId);\r\n                        if (!!this.privRecognizer.speechStartDetected) {\r\n                            this.privRecognizer.speechStartDetected(this.privRecognizer, speechStartEventArgs);\r\n                        }\r\n                        break;\r\n\r\n                    case \"speech.enddetected\":\r\n                        let json: string;\r\n                        if (connectionMessage.textBody.length > 0) {\r\n                            json = connectionMessage.textBody;\r\n                        } else {\r\n                            // If the request was empty, the JSON returned is empty.\r\n                            json = \"{ Offset: 0 }\";\r\n                        }\r\n                        const speechStopDetected: SpeechDetected = SpeechDetected.fromJSON(json, this.privRequestSession.currentTurnAudioOffset);\r\n                        const speechStopEventArgs = new RecognitionEventArgs(speechStopDetected.Offset + this.privRequestSession.currentTurnAudioOffset, this.privRequestSession.sessionId);\r\n                        if (!!this.privRecognizer.speechEndDetected) {\r\n                            this.privRecognizer.speechEndDetected(this.privRecognizer, speechStopEventArgs);\r\n                        }\r\n                        break;\r\n\r\n                    case \"turn.end\":\r\n                        await this.sendTelemetryData();\r\n                        if (this.privRequestSession.isSpeechEnded && this.privMustReportEndOfStream) {\r\n                            this.privMustReportEndOfStream = false;\r\n                            await this.cancelRecognitionLocal(CancellationReason.EndOfStream, CancellationErrorCode.NoError, undefined);\r\n                        }\r\n                        const sessionStopEventArgs: SessionEventArgs = new SessionEventArgs(this.privRequestSession.sessionId);\r\n                        await this.privRequestSession.onServiceTurnEndResponse(this.privRecognizerConfig.isContinuousRecognition);\r\n                        if (!this.privRecognizerConfig.isContinuousRecognition || this.privRequestSession.isSpeechEnded || !this.privRequestSession.isRecognizing) {\r\n                            if (!!this.privRecognizer.sessionStopped) {\r\n                                this.privRecognizer.sessionStopped(this.privRecognizer, sessionStopEventArgs);\r\n                            }\r\n                            return;\r\n                        } else {\r\n                            connection = await this.fetchConnection();\r\n                            await this.sendPrePayloadJSON(connection);\r\n                        }\r\n                        break;\r\n\r\n                    default:\r\n                        if (!await this.processTypeSpecificMessages(connectionMessage)) {\r\n                            // here are some messages that the derived class has not processed, dispatch them to connect class\r\n                            if (!!this.privServiceEvents) {\r\n                                this.serviceEvents.onEvent(new ServiceEvent(connectionMessage.path.toLowerCase(), connectionMessage.textBody));\r\n                            }\r\n                        }\r\n                }\r\n            }\r\n            return this.receiveMessage();\r\n        } catch (error) {\r\n            return null;\r\n        }\r\n    }\r\n\r\n    private updateSpeakerDiarizationAudioOffset(): void {\r\n        const bytesSent: number = this.privRequestSession.recognitionBytesSent;\r\n        const audioOffsetMs: number = this.privAverageBytesPerMs !== 0 ? bytesSent / this.privAverageBytesPerMs : 0;\r\n        this.privSpeechContext.setSpeakerDiarizationAudioOffsetMs(audioOffsetMs);\r\n    }\r\n\r\n    protected sendSpeechContext(connection: IConnection, generateNewRequestId: boolean): Promise<void> {\r\n        if (this.privEnableSpeakerId) {\r\n            this.updateSpeakerDiarizationAudioOffset();\r\n        }\r\n        const speechContextJson = this.speechContext.toJSON();\r\n        if (generateNewRequestId) {\r\n            this.privRequestSession.onSpeechContext();\r\n        }\r\n\r\n        if (speechContextJson) {\r\n            return connection.send(new SpeechConnectionMessage(\r\n                MessageType.Text,\r\n                \"speech.context\",\r\n                this.privRequestSession.requestId,\r\n                \"application/json\",\r\n                speechContextJson));\r\n        }\r\n        return;\r\n    }\r\n\r\n    protected sendPrePayloadJSONOverride: (connection: IConnection) => Promise<void> = undefined;\r\n\r\n    protected noOp(): Promise<void> {\r\n        // operation not supported\r\n        return;\r\n    }\r\n\r\n    // Encapsulated for derived service recognizers that need to send additional JSON\r\n    protected async sendPrePayloadJSON(connection: IConnection, generateNewRequestId: boolean = true): Promise<void> {\r\n        if (this.sendPrePayloadJSONOverride !== undefined) {\r\n            return this.sendPrePayloadJSONOverride(connection);\r\n        }\r\n\r\n        await this.sendSpeechContext(connection, generateNewRequestId);\r\n        await this.sendWaveHeader(connection);\r\n        return;\r\n    }\r\n\r\n    protected async sendWaveHeader(connection: IConnection): Promise<void> {\r\n        const format: AudioStreamFormatImpl = await this.audioSource.format;\r\n        // this.writeBufferToConsole(format.header);\r\n        return connection.send(new SpeechConnectionMessage(\r\n            MessageType.Binary,\r\n            \"audio\",\r\n            this.privRequestSession.requestId,\r\n            \"audio/x-wav\",\r\n            format.header\r\n        ));\r\n    }\r\n\r\n    protected postConnectImplOverride: (connection: Promise<IConnection>) => Promise<IConnection> = undefined;\r\n\r\n    // Establishes a websocket connection to the end point.\r\n    protected connectImpl(): Promise<IConnection> {\r\n        if (this.privConnectionPromise !== undefined) {\r\n            return this.privConnectionPromise.then((connection: IConnection): Promise<IConnection> => {\r\n                if (connection.state() === ConnectionState.Disconnected) {\r\n                    this.privConnectionId = null;\r\n                    this.privConnectionPromise = undefined;\r\n                    this.privServiceHasSentMessage = false;\r\n                    return this.connectImpl();\r\n                }\r\n                return this.privConnectionPromise;\r\n            }, (): Promise<IConnection> => {\r\n                this.privConnectionId = null;\r\n                this.privConnectionPromise = undefined;\r\n                this.privServiceHasSentMessage = false;\r\n                return this.connectImpl();\r\n            });\r\n        }\r\n\r\n        this.privConnectionPromise = this.retryableConnect();\r\n\r\n        // Attach an empty handler to allow the promise to run in the background while\r\n        // other startup events happen. It'll eventually be awaited on.\r\n        // eslint-disable-next-line @typescript-eslint/no-empty-function\r\n        this.privConnectionPromise.catch((): void => { });\r\n\r\n        if (this.postConnectImplOverride !== undefined) {\r\n            return this.postConnectImplOverride(this.privConnectionPromise);\r\n        }\r\n\r\n        return this.privConnectionPromise;\r\n    }\r\n\r\n    protected configConnectionOverride: (connection: IConnection) => Promise<IConnection> = undefined;\r\n    protected handleSpeechPhraseMessage: (textBody: string) => Promise<void> = undefined;\r\n    protected handleSpeechHypothesisMessage: (textBody: string) => void = undefined;\r\n\r\n    protected sendSpeechServiceConfig(connection: IConnection, requestSession: RequestSession, SpeechServiceConfigJson: string): Promise<void> {\r\n        requestSession.onSpeechContext();\r\n        // filter out anything that is not required for the service to work.\r\n        if (ServiceRecognizerBase.telemetryDataEnabled !== true) {\r\n            const withTelemetry: { context: { system: string } } = JSON.parse(SpeechServiceConfigJson) as { context: { system: string } };\r\n\r\n            const replacement: any = {\r\n                context: {\r\n                    system: withTelemetry.context.system,\r\n                },\r\n            };\r\n\r\n            SpeechServiceConfigJson = JSON.stringify(replacement);\r\n        }\r\n\r\n        if (this.privRecognizerConfig.parameters.getProperty(\"f0f5debc-f8c9-4892-ac4b-90a7ab359fd2\", \"false\").toLowerCase() === \"true\") {\r\n            const json: { context: { DisableReferenceChannel: string; MicSpec: string } } = JSON.parse(SpeechServiceConfigJson) as { context: { DisableReferenceChannel: string; MicSpec: string } };\r\n            json.context.DisableReferenceChannel = \"True\";\r\n            json.context.MicSpec = \"1_0_0\";\r\n            SpeechServiceConfigJson = JSON.stringify(json);\r\n        }\r\n\r\n        if (SpeechServiceConfigJson) {\r\n            return connection.send(new SpeechConnectionMessage(\r\n                MessageType.Text,\r\n                \"speech.config\",\r\n                requestSession.requestId,\r\n                \"application/json\",\r\n                SpeechServiceConfigJson));\r\n        }\r\n\r\n        return;\r\n    }\r\n\r\n    protected async fetchConnection(): Promise<IConnection> {\r\n        if (this.privConnectionConfigurationPromise !== undefined) {\r\n            return this.privConnectionConfigurationPromise.then((connection: IConnection): Promise<IConnection> => {\r\n                if (connection.state() === ConnectionState.Disconnected) {\r\n                    this.privConnectionId = null;\r\n                    this.privConnectionConfigurationPromise = undefined;\r\n                    this.privServiceHasSentMessage = false;\r\n                    return this.fetchConnection();\r\n                }\r\n                return this.privConnectionConfigurationPromise;\r\n            }, (): Promise<IConnection> => {\r\n                this.privConnectionId = null;\r\n                this.privConnectionConfigurationPromise = undefined;\r\n                this.privServiceHasSentMessage = false;\r\n                return this.fetchConnection();\r\n            });\r\n        }\r\n\r\n        this.privConnectionConfigurationPromise = this.configureConnection();\r\n        return await this.privConnectionConfigurationPromise;\r\n    }\r\n\r\n    protected async sendAudio(audioStreamNode: IAudioStreamNode): Promise<void> {\r\n        const audioFormat: AudioStreamFormatImpl = await this.audioSource.format;\r\n        this.privAverageBytesPerMs = audioFormat.avgBytesPerSec / 1000;\r\n        // The time we last sent data to the service.\r\n        let nextSendTime: number = Date.now();\r\n\r\n        // Max amount to send before we start to throttle\r\n        const fastLaneSizeMs: string = this.privRecognizerConfig.parameters.getProperty(\"SPEECH-TransmitLengthBeforThrottleMs\", \"5000\");\r\n        const maxSendUnthrottledBytes: number = audioFormat.avgBytesPerSec / 1000 * parseInt(fastLaneSizeMs, 10);\r\n        const startRecogNumber: number = this.privRequestSession.recogNumber;\r\n\r\n        const readAndUploadCycle = async (): Promise<void> => {\r\n            // If speech is done, stop sending audio.\r\n            if (!this.privIsDisposed &&\r\n                !this.privRequestSession.isSpeechEnded &&\r\n                this.privRequestSession.isRecognizing &&\r\n                this.privRequestSession.recogNumber === startRecogNumber) {\r\n\r\n                const connection: IConnection = await this.fetchConnection();\r\n                const audioStreamChunk: IStreamChunk<ArrayBuffer> = await audioStreamNode.read();\r\n                // we have a new audio chunk to upload.\r\n                if (this.privRequestSession.isSpeechEnded) {\r\n                    // If service already recognized audio end then don't send any more audio\r\n                    return;\r\n                }\r\n\r\n                let payload: ArrayBuffer;\r\n                let sendDelay: number;\r\n\r\n                if (!audioStreamChunk || audioStreamChunk.isEnd) {\r\n                    payload = null;\r\n                    sendDelay = 0;\r\n                } else {\r\n                    payload = audioStreamChunk.buffer;\r\n\r\n                    this.privRequestSession.onAudioSent(payload.byteLength);\r\n\r\n                    if (maxSendUnthrottledBytes >= this.privRequestSession.bytesSent) {\r\n                        sendDelay = 0;\r\n                    } else {\r\n                        sendDelay = Math.max(0, nextSendTime - Date.now());\r\n                    }\r\n                }\r\n\r\n                if (0 !== sendDelay) {\r\n                    await this.delay(sendDelay);\r\n                }\r\n\r\n                if (payload !== null) {\r\n                    nextSendTime = Date.now() + (payload.byteLength * 1000 / (audioFormat.avgBytesPerSec * 2));\r\n                }\r\n\r\n                // Are we still alive?\r\n                if (!this.privIsDisposed &&\r\n                    !this.privRequestSession.isSpeechEnded &&\r\n                    this.privRequestSession.isRecognizing &&\r\n                    this.privRequestSession.recogNumber === startRecogNumber) {\r\n                    connection.send(\r\n                        new SpeechConnectionMessage(MessageType.Binary, \"audio\", this.privRequestSession.requestId, null, payload)\r\n                    ).catch((): void => {\r\n                        // eslint-disable-next-line @typescript-eslint/no-empty-function\r\n                        this.privRequestSession.onServiceTurnEndResponse(this.privRecognizerConfig.isContinuousRecognition).catch((): void => { });\r\n                    });\r\n\r\n                    if (!audioStreamChunk?.isEnd) {\r\n                        // this.writeBufferToConsole(payload);\r\n                        // Regardless of success or failure, schedule the next upload.\r\n                        // If the underlying connection was broken, the next cycle will\r\n                        // get a new connection and re-transmit missing audio automatically.\r\n                        return readAndUploadCycle();\r\n                    } else {\r\n                        // the audio stream has been closed, no need to schedule next\r\n                        // read-upload cycle.\r\n                        if (!this.privIsLiveAudio) {\r\n                            this.privRequestSession.onSpeechEnded();\r\n                        }\r\n                    }\r\n                }\r\n            }\r\n        };\r\n\r\n        return readAndUploadCycle();\r\n    }\r\n\r\n    private async retryableConnect(): Promise<IConnection> {\r\n        let isUnAuthorized: boolean = false;\r\n\r\n        this.privAuthFetchEventId = createNoDashGuid();\r\n        const sessionId: string = this.privRequestSession.sessionId;\r\n        this.privConnectionId = (sessionId !== undefined) ? sessionId : createNoDashGuid();\r\n\r\n        this.privRequestSession.onPreConnectionStart(this.privAuthFetchEventId, this.privConnectionId);\r\n        let lastStatusCode: number = 0;\r\n        let lastReason: string = \"\";\r\n\r\n        while (this.privRequestSession.numConnectionAttempts <= this.privRecognizerConfig.maxRetryCount) {\r\n\r\n            // Get the auth information for the connection. This is a bit of overkill for the current API surface, but leaving the plumbing in place to be able to raise a developer-customer\r\n            // facing event when a connection fails to let them try and provide new auth information.\r\n            const authPromise = isUnAuthorized ? this.privAuthentication.fetchOnExpiry(this.privAuthFetchEventId) : this.privAuthentication.fetch(this.privAuthFetchEventId);\r\n            const auth: AuthInfo = await authPromise;\r\n\r\n            await this.privRequestSession.onAuthCompleted(false);\r\n\r\n            // Create the connection\r\n            const connection: IConnection = this.privConnectionFactory.create(this.privRecognizerConfig, auth, this.privConnectionId);\r\n            // Attach the telemetry handlers.\r\n            this.privRequestSession.listenForServiceTelemetry(connection.events);\r\n\r\n            // Attach to the underlying event. No need to hold onto the detach pointers as in the event the connection goes away,\r\n            // it'll stop sending events.\r\n            connection.events.attach((event: ConnectionEvent): void => {\r\n