Upload tasks from NSData are not supported in background sessions

[littleben803]

When I use startUploadRequest to upload image data to server, it throw a exception: "Upload tasks from NSData are not supported in background sessions"

the code is such like that: //------------------------------------------------------------------------------------------------------------------------------ MKNetworkRequest *request = [self.host requestWithPath:@"MyUrl" params:finalSendParams httpMethod:@"POST"]; [request attachData:data forKey:@"img" mimeType:@"image/jpeg" suggestedFileName:@"img.jpg"]; [self.host startUploadRequest:request]; //------------------------------------------------------------------------------------------------------------------------------

in function -(void) startUploadRequest:(MKNetworkRequest*) request; use the backgroundSession like that: request.task = [self.backgroundSession uploadTaskWithRequest:request.request fromData:request.multipartFormData];

maybe we can only upload files "fromFile" in backgroundSession rather then "fromData".