我有一个应用程序,可以在Xcode6-Beta1和Xcode6-Beta2与iOS7和iOS8上正常工作。但是对于Xcode6-Beta3, Beta4, Beta5,我在iOS8上面临网络问题,但在iOS7上一切都很好。我得到错误“网络连接丢失”。错误如下:

Error: ErrorDomain =NSURLErrorDomain Code=-1005 "The network connection was lost."UserInfo=0x7ba8e5b0 {NSErrorFailingURLStringKey=, _kCFStreamErrorCodeKey=57, NSErrorFailingURLKey=, NSLocalizedDescription=网络连接丢失。, _kCFStreamErrorDomainKey=1, NSUnderlyingError=0x7a6957e0 "The network connection was lost."}

我使用AFNetworking 2。X和下面的代码片段进行网络调用:

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager setSecurityPolicy:policy];
manager.requestSerializer = [AFHTTPRequestSerializer serializer];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];

[manager POST:<example-url>
   parameters:<parameteres>
      success:^(AFHTTPRequestOperation *operation, id responseObject) {
          NSLog(@“Success: %@", responseObject);
      } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
          NSLog(@"Error: %@", error);
      }];

我尝试了NSURLSession,但仍然收到相同的错误。


当前回答

2017年1月25日,苹果发布了一份关于此错误的技术问答:

Apple Technical Q&A QA1941 Handling “The network connection was lost” Errors A: NSURLErrorNetworkConnectionLost is error -1005 in the NSURLErrorDomain error domain, and is displayed to users as “The network connection was lost”. This error means that the underlying TCP connection that’s carrying the HTTP request disconnected while the HTTP request was in progress (see below for more information about this). In some circumstances NSURLSession may retry such requests automatically (specifically, if the request is idempotent) but in other circumstances that’s not allowed by the HTTP standards. https://developer.apple.com/library/archive/qa/qa1941/_index.html#//apple_ref/doc/uid/DTS40017602

其他回答

我必须退出XCode,删除DerivedData文件夹内容(~/Library/Developer/ XCode /DerivedData或/Library/Developer/ XCode /DerivedData)并退出模拟器才能使其工作。

iOS 8.0模拟器运行时有一个错误,即如果你的网络配置在模拟设备引导时发生变化,模拟运行时中的高级api(例如:CFNetwork)会认为它已经失去了网络连接。目前,建议的解决方案是在网络配置发生变化时重新启动模拟设备。

如果您受到此问题的影响,请在http://bugreport.apple.com上提交额外的副本雷达,以提高优先级。

如果您在没有更改网络配置的情况下看到了这个问题,那么这不是一个已知的错误,您应该提交一个雷达文件,表明这个问题不是已知的网络配置更改的错误。

On top of all the answers i found one nice solution. Actually The issue related to network connection fail for iOS 12 onword is because there is a bug in the iOS 12.0 onword. And it Yet to resolved. I had gone through the git hub community for AFNetworking related issue when app came from background and tries to do network call and fails on connection establish. I spend 3 days on this and tries many things to get to the root cause for this and found nothing. Finally i got some light in the dark when i red this blog https://github.com/AFNetworking/AFNetworking/issues/4279

据说iOS 12系统有漏洞。基本上,如果应用程序不在前台,你就不能期望网络调用完成。由于这个错误,网络呼叫被中断,我们在日志中得到网络故障。

我给你的最好的建议是,当你的应用从后台到前台有网络呼叫时,提供一些延迟。使调度中的网络调用具有一定的延迟。你永远不会得到网络呼叫掉线或连接丢失。

不要等待苹果在iOS 12中解决这个问题,因为它仍然没有修复。 你可以通过为你的网络请求NSURLConnection, NSURLSession或AFNetworking或ALAMOFIRE提供一些延迟来解决这个问题。欢呼:)

如果问题发生在设备上,检查流量是否通过代理(设置> Wi-Fi > (info) > HTTP代理)。我已经设置好了与Charles一起使用的设备,但忘记了代理。似乎没有Charles实际运行,就会出现这个错误。

2017年1月25日,苹果发布了一份关于此错误的技术问答:

Apple Technical Q&A QA1941 Handling “The network connection was lost” Errors A: NSURLErrorNetworkConnectionLost is error -1005 in the NSURLErrorDomain error domain, and is displayed to users as “The network connection was lost”. This error means that the underlying TCP connection that’s carrying the HTTP request disconnected while the HTTP request was in progress (see below for more information about this). In some circumstances NSURLSession may retry such requests automatically (specifically, if the request is idempotent) but in other circumstances that’s not allowed by the HTTP standards. https://developer.apple.com/library/archive/qa/qa1941/_index.html#//apple_ref/doc/uid/DTS40017602