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下面的代码在 iOS 上使用 AWS Transcribe 生成此错误：

任务 <1B377509-91AE-43C0-8F24-F28FE7B583AC>.<1> 加载失败，错误域=NSURLErrorDomain 代码=-1003“找不到具有指定主机名的服务器。” UserInfo={_kCFStreamErrorCodeKey=8, NSUnderlyingError=0x283cb55f0 {错误域=kCFErrorDomainCFNetwork Code=-1003 "(null)" UserInfo={_kCFStreamErrorCodeKey=8, _kCFStreamErrorDomainKey=12}}, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <1B377509-91AE-43C0-8FEAC24-F288 >.<1>, _NSURLErrorRelatedURLSessionTaskErrorKey=( "LocalDataTask <1B377509-91AE-43C0-8F24-F28FE7B583AC>.<1>" ), NSLocalizedDescription=找不到具有指定主机名的服务器。, NSErrorFailingURLStringKey= https://transcribe .us-west-1.amazonaws.com/ ,, _kCFStreamErrorDomainKey=12} [-1003]

US-West1 是 AWS Transcribe 支持的区域。为什么会发生此错误？

class TranscriptionNewViewController: UIViewController {


    override func viewDidLoad() {
        super.viewDidLoad()
    }


    // =============================================================================================================
    // MARK: Transcription Functions
    // =============================================================================================================
    fileprivate func transcribe() {
        let fileURL = "https://s3-us-west-2.amazonaws.com/blahblahblah/Sample1.mp3"

        let jobName = "sample1"
        let languageCode = AWSTranscribeLanguageCode.enUS
        let mediaFormat = AWSTranscribeMediaFormat.mp3
        let media = AWSTranscribeMedia()
        media?.mediaFileUri = fileURL

        let jobRequest = AWSTranscribeStartTranscriptionJobRequest()
        jobRequest?.transcriptionJobName = jobName
        jobRequest?.languageCode = languageCode
        jobRequest?.mediaFormat = mediaFormat
        jobRequest?.media = media

        let transcribeClient = AWSTranscribe.default()

        DispatchQueue.global(qos: .background).async {
            transcribeClient.startTranscriptionJob(jobRequest!) { response, error in
                guard let response = response else {
                    print("Failed to start transcription")
                    return
                }

                print(response.transcriptionJob!.transcriptionJobStatus == .inProgress, "Status should have been in progress, but was \(response.transcriptionJob!.transcriptionJobStatus)")

                self.transcribeJobDidFinish()
            }
        }

        // Print status
        print("Started transcription")
    }


    fileprivate func transcribeJobDidFinish() {

    }


    // =============================================================================================================
    // MARK: IB Actions
    // =============================================================================================================
    @IBAction func transcribeButtonDidTap(_ sender: UIButton) {
        transcribe()
    }


    // =============================================================================================================
    // MARK: UIViewController Functions
    // =============================================================================================================
    override var prefersStatusBarHidden: Bool {
        return true
    }


    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }
}
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1 回答 1

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目前，只有us-west-2美国西部的 aws 区域提供 AWS Transcribe 服务。us-west-1不是其中之一，您收到主机名查找错误的原因。

大多数服务的可用端点的完整列表可以在https://docs.aws.amazon.com/general/latest/gr/rande.html找到，特别是在Amazon Transcribe标题下。

于 2018-12-05T08:10:26.297 回答