URLSession dataTask-无法连接到服务器

Question

我正在尝试从以下网址加载数据：https://www.sample-videos.com/video/mp4/720/big_buck_bunny_720p_1mb.mp4

功能

func download() {
    let configuration = URLSessionConfiguration.default

    self.session = URLSession(configuration: configuration, delegate: self, delegateQueue: nil)
    self.downloadTask = self.session.dataTask(with: self.url)                
    self.downloadTask.resume()
}

代表

// NOT GETTING CALLED
func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
    completionHandler(URLSession.AuthChallengeDisposition.useCredential, URLCredential(trust: challenge.protectionSpace.serverTrust!))
}

// NOT GETTING CALLED
func urlSession(_ session: URLSession, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
    completionHandler(URLSession.AuthChallengeDisposition.useCredential, URLCredential(trust: challenge.protectionSpace.serverTrust!))
}

func urlSession(_ session: URLSession, dataTask: URLSessionDataTask, didReceive data: Data) {
    self.completion(self, data)
}

func urlSession(_ session: URLSession, task: URLSessionTask, didCompleteWithError error: Error?) {
    print(error)
   // THIS IS GETTING CALLED WITH ERROR: Could not connect to the server. FULL ERROR BELOW.
}

func urlSession(_ session: URLSession, didBecomeInvalidWithError error: Error?) {
    print(error)
}

完全错误

  

（错误域= NSURLErrorDomain代码= -1004 \“无法连接到   服务器。\“ UserInfo = {NSUnderlyingError = 0x1c0658cc0 {Error   Domain = kCFErrorDomainCFNetwork代码= -1004 \“（空）\”   UserInfo = {_ kCFStreamErrorCodeKey = 61，_kCFStreamErrorDomainKey = 1}}，   NSErrorFailingURLStringKey = https://www.sample-videos.com/video/mp4/720/big_buck_bunny_720p_1mb.mp4，   NSErrorFailingURLKey = https://www.sample-videos.com/video/mp4/720/big_buck_bunny_720p_1mb.mp4，   _kCFStreamErrorDomainKey = 1，_kCFStreamErrorCodeKey = 61，NSLocalizedDescription =无法连接到服务器。}）

以下是ATS配置

任何帮助将不胜感激！

  

注意：以上网址在Chrome浏览器中有效，但无法在Safari中加载