// For client requests, these fields are ignored. The HTTP
	// client code always uses either HTTP/1.1 or HTTP/2.
	// See the docs on Transport for details.
	Proto      string // "HTTP/1.0"
	ProtoMajor int    // 1
	ProtoMinor int    // 0

	// Header contains the request header fields either received
	// by the server or to be sent by the client.
	//
	// If a server received a request with header lines,
	//
	//	Host: example.com

	if !ok && body != nil {
		rc = io.NopCloser(body)
	}
	req := &http.Request{
		Method:     http.MethodPost,
		URL:        &u,
		Proto:      "HTTP/1.1",
		ProtoMajor: 1,
		ProtoMinor: 1,
		Header:     make(http.Header),
		Body:       rc,
		Host:       u.Host,
	}
	req = req.WithContext(ctx)
	if body != nil {
		switch v := body.(type) {
		case *bytes.Buffer:

			if err != nil {
				t.Fatalf("URL parse error: %v", err)
			}
			req.Method = "GET"
			req.Proto = "HTTP/1.1"
			req.ProtoMajor = 1
			req.ProtoMinor = 1

			res, err := c.Do(req)
			if err != nil {
				t.Fatalf("error in connectionClose=%v, req #%d, Do: %v", connectionClose, n, err)
			}
			defer res.Body.Close()
			body, err := io.ReadAll(res.Body)

func (tt h12Compare) normalizeRes(t *testing.T, res *Response, wantProto string) {
	if res.Proto == wantProto || res.Proto == "HTTP/IGNORE" {
		res.Proto, res.ProtoMajor, res.ProtoMinor = "", 0, 0
	} else {
		t.Errorf("got %q response; want %q", res.Proto, wantProto)
	}
	slurp, err := io.ReadAll(res.Body)

	res.Body.Close()
	res.Body = slurpResult{

	if req.ProtoMajor == 1 {
		return true
	}
	// Accept "PRI * HTTP/2.0" upgrade requests, so Handlers can
	// wire up their own HTTP/2 upgrades.
	if req.ProtoMajor == 2 && req.ProtoMinor == 0 &&
		req.Method == "PRI" && req.RequestURI == "*" {
		return true
	}
	// Reject HTTP/0.x, and all other HTTP/2+ requests (which
	// aren't encoded in ASCII anyway).
	return false
}

	req := &Request{
		Method:     rp.method,
		URL:        url_,
		RemoteAddr: sc.remoteAddrStr,
		Header:     rp.header,
		RequestURI: requestURI,
		Proto:      "HTTP/2.0",
		ProtoMajor: 2,
		ProtoMinor: 0,
		TLS:        tlsState,
		Host:       rp.authority,
		Body:       body,
		Trailer:    trailer,
	}
	req = req.WithContext(st.ctx)

	rw := sc.newResponseWriter(st, req)