}
			}
		}
		defer conn.Close()
		if debugPrint {
			fmt.Printf("grid: Upgraded request: %v\n", req.URL)
		}

		msg, _, err := wsutil.ReadClientData(conn)
		if err != nil {
			writeErr(fmt.Errorf("reading connect: %w", err))
			w.WriteHeader(http.StatusForbidden)
			return
		}
		if debugPrint {