return
				}
				xhttp.Flush(w)
			case hr := <-respCh:
				switch hr.apiErr {
				case noError:
					if started {
						if _, err := w.Write(hr.respBytes); err != nil {
							return
						}
						xhttp.Flush(w)
					} else {
						writeSuccessResponseJSON(w, hr.respBytes)
					}
				default:
					var errorRespJSON []byte
					if hr.errBody == "" {

			}
		}
	}()

	var (
		hr     *hash.Reader
		isSSEC = crypto.SSEC.IsEncrypted(objInfo.UserDefined)
	)

	var objectSize int64
	for _, partInfo := range objInfo.Parts {
		if isSSEC {
			hr, err = hash.NewReader(ctx, io.LimitReader(r, partInfo.Size), partInfo.Size, "", "", partInfo.ActualSize)
		} else {