}
	if req.Header == nil {
		req.closeBody()
		return nil, errors.New("http: nil Request.Header")
	}
	scheme := req.URL.Scheme
	isHTTP := scheme == "http" || scheme == "https"
	if isHTTP {
		// Validate the outgoing headers.
		if err := validateHeaders(req.Header); err != "" {
			req.closeBody()
			return nil, fmt.Errorf("net/http: invalid header %s", err)
		}

		}
		if !reflect.DeepEqual(r.Header, want) {
			t.Errorf("CheckRedirect Request.Header = %#v; want %#v", r.Header, want)
		}
		return nil
	}

	req, _ := NewRequest("GET", ts2.URL, nil)
	req.Header.Add("User-Agent", ua)
	req.Header.Add("X-Foo", xfoo)
	req.Header.Add("Cookie", "foo=bar")
	req.Header.Add("Authorization", "secretpassword")
	res, err := c.Do(req)

	// clientProtocol is the negotiated ALPN protocol.
	clientProtocol string

	// input/output
	in, out   halfConn
	rawInput  bytes.Buffer // raw input, starting with a record header
	input     bytes.Reader // application data waiting to be read, from rawInput.Next
	hand      bytes.Buffer // handshake data waiting to be read
	buffering bool         // whether records are buffered in sendBuf

		}
		if c := r.Header.Get("Proxy-Connection"); c != "" {
			t.Errorf("handler got Proxy-Connection header value %q", c)
		}
		if g, e := r.Host, "some-name"; g != e {
			t.Errorf("backend got Host header %q, want %q", g, e)
		}
		w.Header().Set("Trailers", "not a special header field name")
		w.Header().Set("Trailer", "X-Trailer")
		w.Header().Set("X-Foo", "bar")
		w.Header().Set("Upgrade", "foo")

		g.Expect(len(routes)).To(Equal(1))
		g.Expect(routes[0].GetMatch().GetHeaders()[0].GetName()).To(Equal("FOO-HEADER"))
		g.Expect(routes[0].GetMatch().GetHeaders()[0].GetPresentMatch()).To(Equal(true))
		g.Expect(routes[0].GetMatch().GetHeaders()[0].GetInvertMatch()).To(Equal(false))
	})

	t.Run("for virtual service with presence matching on header and without_header", func(t *testing.T) {
		g := NewWithT(t)

	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
	//	accept-encoding: gzip, deflate
	//	Accept-Language: en-us
	//	fOO: Bar
	//	foo: two
	//
	// then
	//
	//	Header = map[string][]string{

			if q.Questions[0].Name.String() == "notrustad.go.dev." && q.Header.AuthenticData {
				t.Error("unexpected AD bit")
			}

			if q.Questions[0].Name.String() == "trustad.go.dev." && !q.Header.AuthenticData {
				t.Error("expected AD bit")
			}

			r := dnsmessage.Message{
				Header: dnsmessage.Header{
					ID:       q.Header.ID,
					Response: true,
					RCode:    dnsmessage.RCodeSuccess,

					case !strict && ver.header.matchesNotStrict(latest.header):
						latestCount++
					default:
						latestCount = 1
					}
					latest = ver
					continue
				}

				// Mismatch, but older.
				if latestCount > 0 && !strict && ver.header.matchesNotStrict(latest.header) {
					latestCount++
					continue
				}
				if latestCount > 0 && ver.header.VersionID == latest.header.VersionID {

	if p.off, err = p.header.unpack(msg, 0); err != nil {
		return Header{}, &nestedError{"unpacking header", err}
	}
	p.section = sectionQuestions
	return p.header.header(), nil
}

func (p *Parser) checkAdvance(sec section) error {
	if p.section < sec {
		return ErrNotStarted
	}
	if p.section > sec {
		return ErrSectionDone
	}
	p.resHeaderValid = false
	if p.index == int(p.header.count(sec)) {

type bufReader struct {
	name string
	fn   func(*Reader) string
}

var bufreaders = []bufReader{
	{"1", func(b *Reader) string { return reads(b, 1) }},
	{"2", func(b *Reader) string { return reads(b, 2) }},
	{"3", func(b *Reader) string { return reads(b, 3) }},
	{"4", func(b *Reader) string { return reads(b, 4) }},
	{"5", func(b *Reader) string { return reads(b, 5) }},
	{"7", func(b *Reader) string { return reads(b, 7) }},