NSURLSession and stream upload in background
问题 I have some problems with using NSURLSession to upload photos from Asset Library to the server. At first NSURLSession doesn't support streaming upload. I got an exception when trying to using that: @property (nonatomic, strong) NSURLSession *uploadSession; ... _uploadSession = [NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration backgroundSessionConfiguration:kUploadBackgroundURLSessionIdentifier] delegate:self delegateQueue:nil]; ... NSURLSessionUploadTask *task = [self