Golang hpack.NewEncoder函数代码示例

func ServerPushTestGroup(ctx *Context) *TestGroup {
	tg := NewTestGroup("8.2", "Server Push")

	tg.AddTestCase(NewTestCase(
		"Sends a PUSH_PROMISE frame",
		"The endpoint MUST treat the receipt of a PUSH_PROMISE frame as a connection error of type PROTOCOL_ERROR.",
		func(ctx *Context) (expected []Result, actual Result) {
			http2Conn := CreateHttp2Conn(ctx, true)
			defer http2Conn.conn.Close()

			var buf bytes.Buffer
			hdrs := commonHeaderFields(ctx)
			enc := hpack.NewEncoder(&buf)
			for _, hf := range hdrs {
				_ = enc.WriteField(hf)
			}

			var pp http2.PushPromiseParam
			pp.StreamID = 1
			pp.PromiseID = 3
			pp.EndHeaders = true
			pp.BlockFragment = buf.Bytes()
			http2Conn.fr.WritePushPromise(pp)

			actualCodes := []http2.ErrCode{http2.ErrCodeProtocol}
			return TestConnectionError(ctx, http2Conn, actualCodes)
		},
	))

	return tg
}

func main() {
	flag.Usage = usage
	flag.Parse()
	if flag.NArg() != 1 {
		usage()
	}
	log.SetFlags(0)

	host := flag.Arg(0)
	app := &h2i{
		host:        host,
		peerSetting: make(map[http2.SettingID]uint32),
	}
	app.henc = hpack.NewEncoder(&app.hbuf)

	if err := app.Main(); err != nil {
		if app.term != nil {
			app.logf("%v\n", err)
		} else {
			fmt.Fprintf(os.Stderr, "%v\n", err)
		}
		os.Exit(1)
	}
	fmt.Fprintf(os.Stdout, "\n")
}

func NewConnection(host string, isTLS, sendPreface, sendSettingsInit bool) *Connection {
	conn := &Connection{
		Host:           host,
		IsTLS:          isTLS,
		IsPreface:      sendPreface,
		IsSendSettings: sendSettingsInit,
		PeerSetting:    make(map[http2.SettingID]uint32),
	}
	conn.HEnc = hpack.NewEncoder(&conn.HBuf)

	raw, err := Dial(host, isTLS)
	if err != nil {
		conn.handleError(err)
		return conn
	}
	fmt.Println(raw)
	conn.Raw = raw
	conn.SetupFramer()

	if sendPreface {
		conn.SendPreface()
	}

	if sendSettingsInit {
		conn.SendInitSettings()
	}

	go func() { conn.readFrames() }()

	return conn
}

func TestHTTPHeaderFields(ctx *Context) {
	PrintHeader("8.1.2. HTTP Header Fields", 1)

	func(ctx *Context) {
		desc := "Sends a HEADERS frame that contains the header field name in uppercase letters"
		msg := "the endpoint MUST respond with a stream error of type PROTOCOL_ERROR."
		result := false

		http2Conn := CreateHttp2Conn(ctx, true)
		defer http2Conn.conn.Close()

		var buf bytes.Buffer
		hdrs := []hpack.HeaderField{
			pair(":method", "GET"),
			pair(":scheme", "http"),
			pair(":path", "/"),
			pair(":authority", ctx.Authority()),
			pair("X-TEST", "test"),
		}
		enc := hpack.NewEncoder(&buf)
		for _, hf := range hdrs {
			_ = enc.WriteField(hf)
		}

		var hp http2.HeadersFrameParam
		hp.StreamID = 1
		hp.EndStream = true
		hp.EndHeaders = true
		hp.BlockFragment = buf.Bytes()
		http2Conn.fr.WriteHeaders(hp)

		timeCh := time.After(3 * time.Second)

	loop:
		for {
			select {
			case f := <-http2Conn.dataCh:
				rf, ok := f.(*http2.RSTStreamFrame)
				if ok {
					if rf.ErrCode == http2.ErrCodeProtocol {
						result = true
						break loop
					}
				}
			case <-http2Conn.errCh:
				break loop
			case <-timeCh:
				break loop
			}
		}

		PrintResult(result, desc, msg, 1)
	}(ctx)

	TestPseudoHeaderFields(ctx)
	TestConnectionSpecificHeaderFields(ctx)
	TestRequestPseudoHeaderFields(ctx)
	TestMalformedRequestsAndResponses(ctx)
}

func TestPriority(ctx *Context) {
	PrintHeader("6.3. PRIORITY", 0)

	func(ctx *Context) {
		desc := "Sends a PRIORITY frame with 0x0 stream identifier"
		msg := "The endpoint MUST respond with a connection error of type PROTOCOL_ERROR."
		result := false

		http2Conn := CreateHttp2Conn(ctx, true)
		defer http2Conn.conn.Close()

		var buf bytes.Buffer
		hdrs := []hpack.HeaderField{
			pair(":method", "GET"),
			pair(":scheme", "http"),
			pair(":path", "/"),
			pair(":authority", ctx.Authority()),
		}
		enc := hpack.NewEncoder(&buf)
		for _, hf := range hdrs {
			_ = enc.WriteField(hf)
		}

		var hp http2.HeadersFrameParam
		hp.StreamID = 1
		hp.EndStream = false
		hp.EndHeaders = true
		hp.BlockFragment = buf.Bytes()
		http2Conn.fr.WriteHeaders(hp)

		fmt.Fprintf(http2Conn.conn, "\x00\x00\x05\x02\x00\x00\x00\x00\x00")
		http2Conn.conn.Write(buf.Bytes())
		fmt.Fprintf(http2Conn.conn, "\x80\x00\x00\x01\x0a")

		timeCh := time.After(3 * time.Second)

	loop:
		for {
			select {
			case f := <-http2Conn.dataCh:
				gf, ok := f.(*http2.GoAwayFrame)
				if ok {
					if gf.ErrCode == http2.ErrCodeProtocol {
						result = true
					}
				}
			case <-http2Conn.errCh:
				break loop
			case <-timeCh:
				break loop
			}
		}

		PrintResult(result, desc, msg, 0)
	}(ctx)

	PrintFooter()
}

func TestMalformedRequestsAndResponses(ctx *Context) {
	PrintHeader("8.1.2.6. Malformed Requests and Responses", 2)

	// 8.1.2.6. ボディを構成する DATA フレームペイロードの長さの合計が "content-length" ヘッダーフィールドの値と等しくない場合、リクエストやレスポンスは不正な形式になります。

	func(ctx *Context) {
		desc := "Sends a HEADERS frame that contains invalid \"content-length\" header field"
		msg := "the endpoint MUST respond with a stream error of type PROTOCOL_ERROR."
		result := false

		http2Conn := CreateHttp2Conn(ctx, true)
		defer http2Conn.conn.Close()

		var buf bytes.Buffer
		hdrs := []hpack.HeaderField{
			pair(":method", "POST"),
			pair(":scheme", "http"),
			pair(":path", "/"),
			pair(":authority", ctx.Authority()),
			pair("content-length", "1"),
		}
		enc := hpack.NewEncoder(&buf)
		for _, hf := range hdrs {
			_ = enc.WriteField(hf)
		}

		var hp http2.HeadersFrameParam
		hp.StreamID = 1
		hp.EndStream = false
		hp.EndHeaders = true
		hp.BlockFragment = buf.Bytes()
		http2Conn.fr.WriteHeaders(hp)
		http2Conn.fr.WriteData(1, true, []byte("test"))

		timeCh := time.After(3 * time.Second)

	loop:
		for {
			select {
			case f := <-http2Conn.dataCh:
				rf, ok := f.(*http2.RSTStreamFrame)
				if ok {
					if rf.ErrCode == http2.ErrCodeProtocol {
						result = true
						break loop
					}
				}
			case <-http2Conn.errCh:
				break loop
			case <-timeCh:
				break loop
			}
		}

		PrintResult(result, desc, msg, 2)
	}(ctx)
}

// like encodeHeader, but don't add implicit psuedo headers.
func encodeHeaderNoImplicit(t *testing.T, headers ...string) []byte {
	var buf bytes.Buffer
	enc := hpack.NewEncoder(&buf)
	for len(headers) > 0 {
		k, v := headers[0], headers[1]
		headers = headers[2:]
		if err := enc.WriteField(hpack.HeaderField{Name: k, Value: v}); err != nil {
			t.Fatalf("HPACK encoding error for %q/%q: %v", k, v, err)
		}
	}
	return buf.Bytes()
}

func NewConnectionRaw(c net.Conn, tls bool) *Connection {
	conn := &Connection{
		Host:  "localhost",
		IsTLS: tls,
		Raw:   c,
	}
	conn.HEnc = hpack.NewEncoder(&conn.HBuf)
	conn.SetupFramer()
	conn.SendInitSettings()
	go func() { conn.readFrames() }()

	return conn
}

// newHTTP2Server constructs a ServerTransport based on HTTP2. ConnectionError is
// returned if something goes wrong.
func newHTTP2Server(conn net.Conn, maxStreams uint32) (_ ServerTransport, err error) {
	framer := newFramer(conn)
	// Send initial settings as connection preface to client.
	// TODO(zhaoq): Have a better way to signal "no limit" because 0 is
	// permitted in the HTTP2 spec.
	var settings []http2.Setting
	// TODO(zhaoq): Have a better way to signal "no limit" because 0 is
	// permitted in the HTTP2 spec.
	if maxStreams == 0 {
		maxStreams = math.MaxUint32
	} else {
		settings = append(settings, http2.Setting{http2.SettingMaxConcurrentStreams, maxStreams})
	}
	if initialWindowSize != defaultWindowSize {
		settings = append(settings, http2.Setting{http2.SettingInitialWindowSize, uint32(initialWindowSize)})
	}
	if err := framer.writeSettings(true, settings...); err != nil {
		return nil, ConnectionErrorf("transport: %v", err)
	}
	// Adjust the connection flow control window if needed.
	if delta := uint32(initialConnWindowSize - defaultWindowSize); delta > 0 {
		if err := framer.writeWindowUpdate(true, 0, delta); err != nil {
			return nil, ConnectionErrorf("transport: %v", err)
		}
	}
	var buf bytes.Buffer
	t := &http2Server{
		conn:            conn,
		framer:          framer,
		hBuf:            &buf,
		hEnc:            hpack.NewEncoder(&buf),
		maxStreams:      maxStreams,
		controlBuf:      newRecvBuffer(),
		fc:              &inFlow{limit: initialConnWindowSize},
		sendQuotaPool:   newQuotaPool(defaultWindowSize),
		state:           reachable,
		writableChan:    make(chan int, 1),
		shutdownChan:    make(chan struct{}),
		activeStreams:   make(map[uint32]*Stream),
		streamSendQuota: defaultWindowSize,
	}
	go t.controller()
	t.writableChan <- 0
	return t, nil
}

func NewServerConnection(c net.Conn, tls bool) *Connection {
	conn := &Connection{
		Host:           "localhost",
		IsTLS:          tls,
		Raw:            c,
		PeerSetting:    make(map[http2.SettingID]uint32),
		IsSendSettings: true,
	}
	conn.HEnc = hpack.NewEncoder(&conn.HBuf)
	conn.SetupFramer()

	conn.readPreface()
	conn.Framer.WriteSettings()
	conn.Framer.WriteSettingsAck()
	conn.Framer.WriteSettings()
	conn.Framer.WriteSettingsAck()

	go func() { conn.readFrames() }()

	return conn
}

// newHTTP2Client constructs a connected ClientTransport to addr based on HTTP2
// and starts to receive messages on it. Non-nil error returns if construction
// fails.
func newHTTP2Client(addr string, authOpts []credentials.Credentials) (_ ClientTransport, err error) {
	var (
		connErr error
		conn    net.Conn
	)
	scheme := "http"
	// TODO(zhaoq): Use DialTimeout instead.
	for _, c := range authOpts {
		if ccreds, ok := c.(credentials.TransportAuthenticator); ok {
			scheme = "https"
			// TODO(zhaoq): Now the first TransportAuthenticator is used if there are
			// multiple ones provided. Revisit this if it is not appropriate. Probably
			// place the ClientTransport construction into a separate function to make
			// things clear.
			conn, connErr = ccreds.Dial(addr)
			break
		}
	}
	if scheme == "http" {
		conn, connErr = net.Dial("tcp", addr)
	}
	if connErr != nil {
		return nil, ConnectionErrorf("transport: %v", connErr)
	}
	defer func() {
		if err != nil {
			conn.Close()
		}
	}()
	// Send connection preface to server.
	n, err := conn.Write(clientPreface)
	if err != nil {
		return nil, ConnectionErrorf("transport: %v", err)
	}
	if n != len(clientPreface) {
		return nil, ConnectionErrorf("transport: preface mismatch, wrote %d bytes; want %d", n, len(clientPreface))
	}
	framer := http2.NewFramer(conn, conn)
	if err := framer.WriteSettings(); err != nil {
		return nil, ConnectionErrorf("transport: %v", err)
	}
	var buf bytes.Buffer
	t := &http2Client{
		target: addr,
		conn:   conn,
		// The client initiated stream id is odd starting from 1.
		nextID:        1,
		writableChan:  make(chan int, 1),
		shutdownChan:  make(chan struct{}),
		errorChan:     make(chan struct{}),
		framer:        framer,
		hBuf:          &buf,
		hEnc:          hpack.NewEncoder(&buf),
		controlBuf:    newRecvBuffer(),
		sendQuotaPool: newQuotaPool(initialWindowSize),
		scheme:        scheme,
		state:         reachable,
		activeStreams: make(map[uint32]*Stream),
		maxStreams:    math.MaxUint32,
		authCreds:     authOpts,
	}
	go t.controller()
	t.writableChan <- 0
	// Start the reader goroutine for incoming message. The threading model
	// on receiving is that each transport has a dedicated goroutine which
	// reads HTTP2 frame from network. Then it dispatches the frame to the
	// corresponding stream entity.
	go t.reader()
	return t, nil
}

func TestWindowUpdate(ctx *Context) {
	PrintHeader("6.9. WINDOW_UPDATE", 0)

	func(ctx *Context) {
		desc := "Sends a WINDOW_UPDATE frame with an flow control window increment of 0"
		msg := "the endpoint MUST respond with a connection error of type PROTOCOL_ERROR."
		result := false

		http2Conn := CreateHttp2Conn(ctx, true)
		defer http2Conn.conn.Close()

		http2Conn.fr.WriteWindowUpdate(0, 0)

		timeCh := time.After(3 * time.Second)

	loop:
		for {
			select {
			case f := <-http2Conn.dataCh:
				gf, ok := f.(*http2.GoAwayFrame)
				if ok {
					if gf.ErrCode == http2.ErrCodeProtocol {
						result = true
						break loop
					}
				}
			case <-http2Conn.errCh:
				break loop
			case <-timeCh:
				break loop
			}
		}

		PrintResult(result, desc, msg, 0)
	}(ctx)

	func(ctx *Context) {
		desc := "Sends a WINDOW_UPDATE frame with an flow control window increment of 0 on a stream"
		msg := "the endpoint MUST respond with a connection error of type PROTOCOL_ERROR."
		result := false

		http2Conn := CreateHttp2Conn(ctx, true)
		defer http2Conn.conn.Close()

		var buf bytes.Buffer
		hdrs := []hpack.HeaderField{
			pair(":method", "GET"),
			pair(":scheme", "http"),
			pair(":path", "/"),
			pair(":authority", ctx.Authority()),
		}
		enc := hpack.NewEncoder(&buf)
		for _, hf := range hdrs {
			_ = enc.WriteField(hf)
		}

		var hp http2.HeadersFrameParam
		hp.StreamID = 1
		hp.EndStream = false
		hp.EndHeaders = true
		hp.BlockFragment = buf.Bytes()
		http2Conn.fr.WriteHeaders(hp)
		http2Conn.fr.WriteWindowUpdate(1, 0)

		timeCh := time.After(3 * time.Second)

	loop:
		for {
			select {
			case f := <-http2Conn.dataCh:
				gf, ok := f.(*http2.GoAwayFrame)
				if ok {
					if gf.ErrCode == http2.ErrCodeProtocol {
						result = true
						break loop
					}
				}
			case <-http2Conn.errCh:
				break loop
			case <-timeCh:
				break loop
			}
		}

		PrintResult(result, desc, msg, 0)
	}(ctx)

	TestInitialFlowControlWindowSize(ctx)

	PrintFooter()
}

func CreateHttp2Conn(ctx *Context, sn bool) *Http2Conn {
	var conn net.Conn
	var err error

	if ctx.Tls {
		conn, err = connectTls(ctx)
	} else {
		conn, err = net.Dial("tcp", ctx.Authority())
	}

	if err != nil {
		fmt.Printf("Unable to connect to the target server: %v\n", err)
		os.Exit(1)
	}

	fmt.Fprintf(conn, "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n")

	fr := http2.NewFramer(conn, conn)
	settings := map[http2.SettingID]uint32{}

	if sn {
		doneCh := make(chan bool, 1)
		errCh := make(chan error, 1)
		fr.WriteSettings()

		go func() {
			local := false
			remote := false

			for {
				f, err := fr.ReadFrame()
				if err != nil {
					errCh <- err
					return
				}

				switch f := f.(type) {
				case *http2.SettingsFrame:
					if f.IsAck() {
						local = true
					} else {
						f.ForeachSetting(func(setting http2.Setting) error {
							settings[setting.ID] = setting.Val
							return nil
						})
						fr.WriteSettingsAck()
						remote = true
					}
				}

				if local && remote {
					doneCh <- true
					return
				}
			}
		}()

		select {
		case <-doneCh:
			// Nothing to. do
		case <-errCh:
			fmt.Println("HTTP/2 settings negotiation failed")
			os.Exit(1)
		case <-time.After(ctx.Timeout):
			fmt.Println("HTTP/2 settings negotiation timeout")
			os.Exit(1)
		}
	}

	fr.AllowIllegalWrites = true
	dataCh := make(chan http2.Frame)
	errCh := make(chan error, 1)

	http2Conn := &Http2Conn{
		conn:     conn,
		fr:       fr,
		dataCh:   dataCh,
		errCh:    errCh,
		Settings: settings,
	}

	http2Conn.HpackEncoder = hpack.NewEncoder(&http2Conn.HeaderWriteBuf)

	return http2Conn
}

func TestPseudoHeaderFields(ctx *Context) {
	PrintHeader("8.1.2.1. Pseudo-Header Fields", 2)

	func(ctx *Context) {
		desc := "Sends a HEADERS frame that contains the pseudo-header field defined for response"
		msg := "the endpoint MUST respond with a stream error of type PROTOCOL_ERROR."
		result := false

		http2Conn := CreateHttp2Conn(ctx, true)
		defer http2Conn.conn.Close()

		var buf bytes.Buffer
		hdrs := []hpack.HeaderField{
			pair(":method", "GET"),
			pair(":scheme", "http"),
			pair(":path", "/"),
			pair(":authority", ctx.Authority()),
			pair(":status", "200"),
		}
		enc := hpack.NewEncoder(&buf)
		for _, hf := range hdrs {
			_ = enc.WriteField(hf)
		}

		var hp http2.HeadersFrameParam
		hp.StreamID = 1
		hp.EndStream = true
		hp.EndHeaders = true
		hp.BlockFragment = buf.Bytes()
		http2Conn.fr.WriteHeaders(hp)

		timeCh := time.After(3 * time.Second)

	loop:
		for {
			select {
			case f := <-http2Conn.dataCh:
				rf, ok := f.(*http2.RSTStreamFrame)
				if ok {
					if rf.ErrCode == http2.ErrCodeProtocol {
						result = true
						break loop
					}
				}
			case <-http2Conn.errCh:
				break loop
			case <-timeCh:
				break loop
			}
		}

		PrintResult(result, desc, msg, 2)
	}(ctx)

	func(ctx *Context) {
		desc := "Sends a HEADERS frame that contains the invalid pseudo-header field"
		msg := "the endpoint MUST respond with a stream error of type PROTOCOL_ERROR."
		result := false

		http2Conn := CreateHttp2Conn(ctx, true)
		defer http2Conn.conn.Close()

		var buf bytes.Buffer
		hdrs := []hpack.HeaderField{
			pair(":method", "GET"),
			pair(":scheme", "http"),
			pair(":path", "/"),
			pair(":authority", ctx.Authority()),
			pair(":test", "test"),
		}
		enc := hpack.NewEncoder(&buf)
		for _, hf := range hdrs {
			_ = enc.WriteField(hf)
		}

		var hp http2.HeadersFrameParam
		hp.StreamID = 1
		hp.EndStream = true
		hp.EndHeaders = true
		hp.BlockFragment = buf.Bytes()
		http2Conn.fr.WriteHeaders(hp)

		timeCh := time.After(3 * time.Second)

	loop:
		for {
			select {
			case f := <-http2Conn.dataCh:
				rf, ok := f.(*http2.RSTStreamFrame)
				if ok {
					if rf.ErrCode == http2.ErrCodeProtocol {
						result = true
						break loop
					}
				}
			case <-http2Conn.errCh:
				break loop
			case <-timeCh:
				break loop
			}
//.........这里部分代码省略.........

func HeadersTestGroup(ctx *Context) *TestGroup {
	tg := NewTestGroup("6.2", "HEADERS")

	tg.AddTestCase(NewTestCase(
		"Sends a HEADERS frame followed by any frame other than CONTINUATION",
		"The endpoint MUST treat the receipt of any other type of frame as a connection error of type PROTOCOL_ERROR.",
		func(ctx *Context) (expected []Result, actual Result) {
			http2Conn := CreateHttp2Conn(ctx, true)
			defer http2Conn.conn.Close()

			hdrs := commonHeaderFields(ctx)

			var hp http2.HeadersFrameParam
			hp.StreamID = 1
			hp.EndStream = false
			hp.EndHeaders = false
			hp.BlockFragment = http2Conn.EncodeHeader(hdrs)
			http2Conn.fr.WriteHeaders(hp)
			http2Conn.fr.WriteData(1, true, []byte("test"))

			actualCodes := []http2.ErrCode{http2.ErrCodeProtocol}
			return TestConnectionError(ctx, http2Conn, actualCodes)
		},
	))

	tg.AddTestCase(NewTestCase(
		"Sends a HEADERS frame followed by a frame on a different stream",
		"The endpoint MUST treat the receipt of a frame on a different stream as a connection error of type PROTOCOL_ERROR.",
		func(ctx *Context) (expected []Result, actual Result) {
			http2Conn := CreateHttp2Conn(ctx, true)
			defer http2Conn.conn.Close()

			hdrs := commonHeaderFields(ctx)

			var hp1 http2.HeadersFrameParam
			hp1.StreamID = 1
			hp1.EndStream = false
			hp1.EndHeaders = false
			hp1.BlockFragment = http2Conn.EncodeHeader(hdrs)
			http2Conn.fr.WriteHeaders(hp1)

			var hp2 http2.HeadersFrameParam
			hp2.StreamID = 3
			hp2.EndStream = true
			hp2.EndHeaders = true
			hp2.BlockFragment = http2Conn.EncodeHeader(hdrs)
			http2Conn.fr.WriteHeaders(hp2)

			actualCodes := []http2.ErrCode{http2.ErrCodeProtocol}
			return TestConnectionError(ctx, http2Conn, actualCodes)
		},
	))

	tg.AddTestCase(NewTestCase(
		"Sends a HEADERS frame with 0x0 stream identifier",
		"The endpoint MUST respond with a connection error of type PROTOCOL_ERROR.",
		func(ctx *Context) (expected []Result, actual Result) {
			http2Conn := CreateHttp2Conn(ctx, true)
			defer http2Conn.conn.Close()

			hdrs := commonHeaderFields(ctx)

			var hp http2.HeadersFrameParam
			hp.StreamID = 0
			hp.EndStream = true
			hp.EndHeaders = true
			hp.BlockFragment = http2Conn.EncodeHeader(hdrs)
			http2Conn.fr.WriteHeaders(hp)

			actualCodes := []http2.ErrCode{http2.ErrCodeProtocol}
			return TestConnectionError(ctx, http2Conn, actualCodes)
		},
	))

	tg.AddTestCase(NewTestCase(
		"Sends a HEADERS frame with invalid pad length",
		"The endpoint MUST treat this as a connection error of type PROTOCOL_ERROR.",
		func(ctx *Context) (expected []Result, actual Result) {
			http2Conn := CreateHttp2Conn(ctx, true)
			defer http2Conn.conn.Close()

			var buf bytes.Buffer
			hdrs := commonHeaderFields(ctx)
			enc := hpack.NewEncoder(&buf)
			for _, hf := range hdrs {
				_ = enc.WriteField(hf)
			}

			fmt.Fprintf(http2Conn.conn, "\x00\x00\x0f\x01\x0c\x00\x00\x00\x01")
			http2Conn.conn.Write(buf.Bytes())
			fmt.Fprintf(http2Conn.conn, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00")

			actualCodes := []http2.ErrCode{http2.ErrCodeProtocol}
			return TestConnectionError(ctx, http2Conn, actualCodes)
		},
	))

	return tg
}