QCloudCOSSMHUploadObjectRequest *uploadReq = [QCloudCOSSMHUploadObjectRequest new];
// If confirmKey is set, deem as resume upload; otherwise, it's a new upload task.
// Get from the getConfirmKey callback.
uploadReq.confirmKey = @"confirmKey";
// Set the libraryId where the directory to be uploaded is located.
uploadReq.libraryId = @"libraryId";
// Set the libraryId where the directory to be uploaded is located.
uploadReq.spaceId = @"spaceId";
// URL or data of the uploaded file
uploadReq.body = @"uploadBody";
uploadReq.uploadPath = @"target path";
// confirmKey callback
uploadReq.getConfirmKey = ^(NSString *_Nullable confirmKey) {
    // confirmKey is required for resuming uploads, business needs to save
};
// upload progress callback
[uploadReq setSendProcessBlock:^(int64_t bytesSent, int64_t totalBytesSent, int64_t totalBytesExpectedToSend) {

}];
// upload result callback
[uploadReq setFinishBlock:^(QCloudSMHContentInfo *result, NSError *error) {

}];
// Start uploading
[[QCloudSMHService defaultSMHService] uploadObject:uploadReq];

[uploadReq cancel];

[uploadReq abort:^(id outputObject, NSError *error) {
    // end callback
}];