Question

我是iOS的新手，使用Alamofire上传图片。这是我的代码：

let image = imageView.image
        let parameters = ["profile_picture" : "pic"]
        let fileData = UIImageJPEGRepresentation(image!, 0.2)
        let URL2 = try! URLRequest(url: "######", method: .post, headers: ["Authorization" : "######"])

            configuration.timeoutIntervalForRequest = 200
            manager = Alamofire.SessionManager(configuration: configuration)

        manager.upload(multipartFormData: { (multipartFormData) in

            multipartFormData.append(fileData!, withName: "profile_picture", fileName: "upfile", mimeType: "image/jpg")


            for (key, value) in parameters {
                multipartFormData.append((value as AnyObject).data(using: String.Encoding.utf8.rawValue)!, withName: key)
            }
        }, with: URL2 , encodingCompletion: { (result) in

            switch result {
            case .success(let upload, _, _):
                upload.responseJSON {
                    response in
                    debugPrint(response)
                    if let JSON = response.result.value as? [String : Any]{
                        let messageString = JSON["message"] as? String
                        debugPrint(messageString)

                    }else {

                        let alertError = UIAlertController(title: "Alert", message: "Image upload error", preferredStyle: UIAlertControllerStyle.alert)
                        alertError.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: nil))
                        self.present(alertError, animated: true, completion: nil)
                    }

                }

            case .failure(let encodingError):
            print(encodingError)

            let alertError = UIAlertController(title: "Alert", message: "Image upload error", preferredStyle: UIAlertControllerStyle.alert)
            alertError.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: nil))
            self.present(alertError, animated: true, completion: nil)
            }
        }
    )

当我运行此代码时，出现以下错误：

2017-11-07 12:54:13.055846+0500 TestApiProject[5972:136877] TIC Read Status [1:0x604000177a00]: 1:57
2017-11-07 12:54:13.057150+0500 TestApiProject[5972:136877] Task <BF98A675-2BCE-4248-A045-EA2D35971EAA>.<1> HTTP load failed (error code: -1005 [4:-4])
2017-11-07 12:54:13.058097+0500 TestApiProject[5972:136879] Task <BF98A675-2BCE-4248-A045-EA2D35971EAA>.<1> finished with error - code: -1005
[Request]: POST http://.....
[Response]: nil
[Data]: 0 bytes
[Result]: FAILURE: Error Domain=NSURLErrorDomain Code=-1005 "The network connection was lost." UserInfo={NSUnderlyingError=0x604000245e50 {Error Domain=kCFErrorDomainCFNetwork Code=-1005 "(null)" UserInfo={_kCFStreamErrorCodeKey=-4, _kCFStreamErrorDomainKey=4}}, NSErrorFailingURLStringKey=http://staging.discretelogix.com:5002/api/v1/users/profile-picture, NSErrorFailingURLKey=http://staging.discretelogix.com:5002/api/v1/users/profile-picture, _kCFStreamErrorDomainKey=4, _kCFStreamErrorCodeKey=-4, NSLocalizedDescription=The network connection was lost.}
[Timeline]: Timeline: { "Request Start Time": 531734052.362, "Initial Response Time": 531734052.721, "Request Completed Time": 531734053.071, "Serialization Completed Time": 531734053.077, "Latency": 0.359 secs, "Request Duration": 0.710 secs, "Serialization Duration": 0.006 secs, "Total Duration": 0.715 secs }

我搜索了这个错误，我尝试过的事情是：

重新启动xcode和模拟器。（因为它主要被接受题）
清洁项目。
删除衍生数据。（Xcode - ＆gt;偏好设置 - ＆gt;派生数据）
增加Alamofire的请求超时参数值。

但不幸的是，以上都没有解决我的问题。

在另一个地方，我读到了＆＃34; Keep Alive＆＃34;标头中的参数。并且iOS中Keep alive的默认值是30秒，在我的情况下需要增加。但我发现Alamofire没有任何相关内容。我刚刚发现它属于底层URLSession，需要更新。

所以我的问题是：

如何在Alamofire标头中使用Keep Alive参数？我可以吗？
如果没有，那么如何在URLSession中更新它？
我的Alamofire代码中是否需要更改内容？
我的问题还有其他解决办法吗？

我希望我对自己需要的东西足够清楚。我是iOS的新手，从早上起就一直在搜索这个错误。任何帮助将非常感激。

P.s，我正在使用：

Xcode 9，Swift 3.2，Alamofire 4

错误域= NSURLErrorDomain代码= -1005＆＃34;网络连接在Alamofire中丢失。

0 个答案: