标签: urlauthenticationchallenges

我有一个名为的自定义委托类CertificatePinningDelegate，它符合URLSessionDelegate. 我正在使用委托方法

urlSession(_ session: URLSession, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) 

与服务器进行身份验证。现在我想为此编写一个单元测试。

我一直在尝试手动调用委托方法来传递自定义URLAuthenticationChallenge对象，这似乎是不可能的。有谁知道有什么替代/更好的选择吗？

我正在尝试从 URL 下载 PDF。

private func downloadSessionWithFileURL(_ url: URL){
    var request = URLRequest(url: url)
    
    request.addValue("gzip, deflate", forHTTPHeaderField: "Accept-Encoding")
   
    let sessionConfig = URLSessionConfiguration.default
    
    let session = URLSession(configuration: sessionConfig, delegate: self, delegateQueue: nil)
    session.downloadTask(with: request).resume()      
}

这调用了它的委托方法

func urlSession(_ session: URLSession, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
    if challenge.previousFailureCount > 0 {
          completionHandler(Foundation.URLSession.AuthChallengeDisposition.cancelAuthenticationChallenge, nil)
    }
    if let serverTrust = challenge.protectionSpace.serverTrust {
      completionHandler(Foundation.URLSession.AuthChallengeDisposition.useCredential, URLCredential(trust: serverTrust))
} else {
      print("unknown state. error: \(String(describing: challenge.error))")
   }
}

URLAuthenticationChallenges 保护空间始终是 serverTrust。当尝试访问 PDF …