错误域=NSURLError域代码=-1009 "The Internet connection appears to be offline."

Question

当我尝试使用以下代码连接到soundcloud时：

// Create the request.
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"https://soundcloud.com/api"] cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:10.0];
// Create url connection and fire request
NSURLConnection *conn = [[NSURLConnection alloc] initWithRequest:request delegate:self];

虽然我得到以下错误：

Error Domain=NSURLErrorDomain Code=-1009 "The Internet connection appears to be offline." UserInfo={NSUnderlyingError=0x14cfccae0 {Error Domain=kCFErrorDomainCFNetwork Code=-1009 "The Internet connection appears to be offline." UserInfo={NSErrorFailingURLStringKey=https://soundcloud.com/api, NSErrorFailingURLKey=https://soundcloud.com/api, kCFStreamErrorCodeKey=50, kCFStreamErrorDomainKey=1, NSLocalizedDescription=The Internet connection appears to be offline.}}, NSErrorFailingURLStringKey=https://soundcloud.com/api, NSErrorFailingURLKey=https://soundcloud.com/api, kCFStreamErrorDomainKey=1, kCFStreamErrorCodeKey=50, NSLocalizedDescription=The Internet connection appears to be offline.}

关键是：我在我的iPhone上运行它，网络是4G。当我通过 Wifi 使用其他网络时，代码实际上运行良好。

Answer 1

原因是我的iPhone上的应用程序关闭了4G网络，但不确定我何时以及为什么这样做。

Answer 2

我找到了解决方案，因为它设置了超时间隔：10.0在

NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"https://soundcloud.com/api"] cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:10.0];

并且在此时间内没有收到响应，因此您需要超过此时间，或者您也可以删除此间隔

Answer 3

通过更新我的 MacOS 删除了错误...