Question

我一直试图在iOS中一起处理多个HLS音频文件。这些文件用密钥加密。我需要获取密钥并将其存储在本地以供离线使用。当我同时下载少量（2个或3个文件）文件时，它可以正常工作，但是如果我同时开始下载10-15个文件，其中大多数文件都会失败，并显示错误消息-

Error Domain = AVFoundationErrorDomain代码= -11800“该操作可能未完成” UserInfo = {NSLocalizedFailureReason =未知错误发生（-17377），NSLocalizedDescription =无法执行该操作完成}

我也从NSURLErrorDomain收到错误消息，但是很少见。我用来获取供离线使用的密钥的方法的链接如下-

Playing Offline HLS with AES-128 encryption iOS

任何帮助将不胜感激。

类AudioDownloader {

var productKey: String

var downloadUrl: URL

var downloadSession: AVAssetDownloadURLSession?

var fakeDownloadUrl: URL?

var downloadTask: AVAssetDownloadTask?





func downloadAudio() {



        if downloadSession == nil {



            let configuration = URLSessionConfiguration.background(withIdentifier: self.productKey)

            downloadSession = AVAssetDownloadURLSession(configuration: configuration, assetDownloadDelegate: self, delegateQueue: OperationQueue.main)

            configuration.shouldUseExtendedBackgroundIdleMode = true

            configuration.httpShouldSetCookies = true

            configuration.httpShouldUsePipelining = false

            configuration.allowsCellularAccess = true

            configuration.isDiscretionary = true



        }

            self.fakeDownloadUrl = self.convertToScheme(url: self.downloadUrl, scheme: "fakehttp")



            let asset = AVURLAsset(url: self.fakeDownloadUrl!)



            let loader = asset.resourceLoader

            loader.setDelegate(self, queue: DispatchQueue(label: "dispatch2"))

            self.downloadTask = downloadSession?.makeAssetDownloadTask(asset: asset, assetTitle: "assetTitle \(self.productKey)", assetArtworkData: nil, options: nil)!

            self.downloadTask?.taskDescription = self.productKey

            self.downloadTask?.resume()

    }

}

同时下载多个HLS音频文件失败

0 个答案: