ios分块上传 sdk 401错误

Question

NSString * bucket = @"duoduo-image";
NSString * secret = @"UNgy1QighrZod6fxpArBlpOGx3o=";
/**
* 请求api地址
*/
static NSString * API_SERVER = @"http://v0.api.upyun.com/";
直接运行的demo程序 就改了这三处！

Error Domain=AFNetworkingErrorDomain Code=-1011 "Expected status code in (200-299), got 401" UserInfo=0x1668f110 {NSLocalizedRecoverySuggestion=

401 Unauthorized

sign error, AFNetworkingOperationFailingURLRequestErrorKey=