} else {
				if closeBody {
					res.Body.Close()
				}
			}
		}
	}
}

func TestTransportConcurrency(t *testing.T) {
	run(t, testTransportConcurrency, testNotParallel, []testMode{http1Mode})
}
func testTransportConcurrency(t *testing.T, mode testMode) {
	// Not parallel: uses global test hooks.
	maxProcs, numReqs := 16, 500
	if testing.Short() {