// body into a ReadCloser if it's a Closer, and that the Transport
// then closes it.
func TestTransportClosesRequestBody(t *testing.T) {
	run(t, testTransportClosesRequestBody, []testMode{http1Mode})
}
func testTransportClosesRequestBody(t *testing.T, mode testMode) {
	ts := newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {
		io.Copy(io.Discard, r.Body)