使用 Swift 3.0 的 Alamofire 4 失败：错误域 = NSURLErrorDomain 代码 = -999 “已取消”

Posted 2023-02-24

【中文标题】使用 Swift 3.0 的 Alamofire 4 失败：错误域 = NSURLErrorDomain 代码 = -999 “已取消”

【英文标题】：Alamofire 4 FAILURE With Swift 3.0 : Error Domain=NSURLErrorDomain Code=-999 “cancelled”

【发布时间】：2016-11-22 05:51:11

【问题描述】：

我正在使用 Alamofire 进行 https 连接。

但是在 Alamofire 中进行测试时，我得到了这个错误：

URLError occurred: URLError(_nsError: Error Domain=NSURLErrorDomain Code=-999 "cancelled" UserInfo=NSErrorFailingURLKey=https://192.168.X.XX/VMSSite/Handlers/Common/iosServer.ashx?RegID=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX, NSLocalizedDescription=cancelled, NSErrorFailingURLStringKey=https://192.168.X.XX/VMSSite/Handlers/Common/iOSServer.ashx?RegID=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX) status code: nil

我的来源是这样的：

    var defaultManager = Alamofire.SessionManager.default
            let serverTrustPolicies: [String: ServerTrustPolicy] = [
              "192.168.X.XX:443": .disableEvaluation,
              "192.168.X.XX": .disableEvaluation
            ]

    let configuration = URLSessionConfiguration.default
        configuration.timeoutIntervalForRequest = 30 //seconds
        configuration.httpAdditionalHeaders = Alamofire.SessionManager.defaultHTTPHeaders

        //defaultManager = SessionManager(configuration: configuration, delegate: SessionDelegate(), serverTrustPolicyManager: ServerTrustPolicyManager(policies: serverTrustPolicies))
        defaultManager = SessionManager(configuration: configuration, serverTrustPolicyManager: ServerTrustPolicyManager(policies: serverTrustPolicies))

        defaultManager.request("https://192.168.X.XX/VMSSite/Handlers/Common/iOSServer.ashx?RegID=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", method: .post, parameters: nil, encoding: JSONEncoding.default).responseJSON  response in
            debugPrint(response)

     var statusCode = response.response?.statusCode

        if let error = response.result.error as? AFError 
            statusCode = error._code // statusCode private
            switch error 
            case .invalidURL(let url):
                print("Invalid URL: \(url) - \(error.localizedDescription)")
            case .parameterEncodingFailed(let reason):
                print("Parameter encoding failed: \(error.localizedDescription)")
                print("Failure Reason: \(reason)")
            case .multipartEncodingFailed(let reason):
                print("Multipart encoding failed: \(error.localizedDescription)")
                print("Failure Reason: \(reason)")
            case .responseValidationFailed(let reason):
                print("Response validation failed: \(error.localizedDescription)")
                print("Failure Reason: \(reason)")

                switch reason 
                case .dataFileNil, .dataFileReadFailed:
                    print("Downloaded file could not be read")
                case .missingContentType(let acceptableContentTypes):
                    print("Content Type Missing: \(acceptableContentTypes)")
                case .unacceptableContentType(let acceptableContentTypes, let responseContentType):
                    print("Response content type: \(responseContentType) was unacceptable: \(acceptableContentTypes)")
                case .unacceptableStatusCode(let code):
                    print("Response status code was unacceptable: \(code)")
                    statusCode = code
                
            case .responseSerializationFailed(let reason):
                print("Response serialization failed: \(error.localizedDescription)")
                print("Failure Reason: \(reason)")
                // statusCode = 3840 ???? maybe..
            

            print("Underlying error: \(error.underlyingError)")
         else if let error = response.result.error as? URLError 
            print("URLError occurred: \(error)")
         else 
            print("Unknown error: \(response.result.error)")
        

        print("status code: \(statusCode)") // the status code
     

我正在使用来自 xcode8.1 分支的 Swift 3 和 Alamofire 4.0。 请帮帮我。

和

如何在 ATS 中为动态主机名设置异常域的值？

注意：如果我在此代码中使用 bypassURLAuthentication，则它与 https 一起工作正常。但根据帖子here bypassURLAuthentication 不建议用于生产。所以我需要帮助来解决这个问题。

【问题讨论】：

见***.com/a/42985488/746347

【参考方案1】：

使用这个：-

Alamofire.request("https://192.168.X.XX/VMSSite/Handlers/Common/iOSServer.ashx?RegID=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", method: .post, parameters: nil, headers: nil).responseJSON  (response:DataResponse<Any>) in

 switch(response.result) 
            case .success(_):
                if let data = response.result.value
           print("your response data \(response.data!)")

                
                break

            case .failure(_):
                print(response.result.error)


                break

            

【讨论】：

我试过这个但是想用 SSL (serverTrustPolicies) 发出请求，这就是为什么我不能使用 Alamofire.request 如果你看到我的代码我使用 sessionmanager 调用请求，我收到了这个错误.

【参考方案2】：

您需要保留对您的 defaultManager 实例的引用。否则，会话管理器在返回响应之前被释放。更多信息请看这里：https://github.com/Alamofire/Alamofire/issues/157

【参考方案3】：

为您的班级创建 defaultManager 全局属性。