if err != nil || len(raw) < 4 || binary.BigEndian.Uint32(raw) != hash {
				return nil, errMalformedNote
			}
			buf.WriteString("— ")
			buf.WriteString(sig.Name)
			buf.WriteString(" ")
			buf.WriteString(sig.Base64)
			buf.WriteString("\n")
		}
	}
	buf.Write(sigs.Bytes())

	return buf.Bytes(), nil

func (h http2FrameHeader) String() string {
	var buf bytes.Buffer
	buf.WriteString("[FrameHeader ")
	h.writeDebug(&buf)
	buf.WriteByte(']')
	return buf.String()
}

func (h http2FrameHeader) writeDebug(buf *bytes.Buffer) {
	buf.WriteString(h.Type.String())
	if h.Flags != 0 {
		buf.WriteString(" flags=")
		set := 0
		for i := uint8(0); i < 8; i++ {

			return nil, errMalformedJWKRSAKey
		}

		// decode exponent
		ebuf, err := base64.RawURLEncoding.DecodeString(key.E)
		if err != nil {
			return nil, errMalformedJWKRSAKey
		}

		nbuf, err := base64.RawURLEncoding.DecodeString(key.N)
		if err != nil {
			return nil, errMalformedJWKRSAKey
		}

		var n, e big.Int
		n.SetBytes(nbuf)
		e.SetBytes(ebuf)

		return &rsa.PublicKey{
			E: int(e.Int64()),
			N: &n,

	return 0
}

func makeBuf(d *Data, format dataFormat, name string, off Offset, data []byte) buf {
	return buf{d, d.order, format, name, off, data, nil}
}

func (b *buf) uint8() uint8 {
	if len(b.data) < 1 {
		b.error("underflow")
		return 0
	}
	val := b.data[0]
	b.data = b.data[1:]
	b.off++
	return val
}

func (b *buf) bytes(n int) []byte {
	if n < 0 || len(b.data) < n {
		b.error("underflow")
		return nil

		return 0, e.err
	}

	// Leading fringe.
	if e.nbuf > 0 {
		var i int
		for i = 0; i < len(p) && e.nbuf < 5; i++ {
			e.buf[e.nbuf] = p[i]
			e.nbuf++
		}
		n += i
		p = p[i:]
		if e.nbuf < 5 {
			return
		}
		e.enc.Encode(e.out[0:], e.buf[0:])
		if _, e.err = e.w.Write(e.out[0:8]); e.err != nil {
			return n, e.err
		}
		e.nbuf = 0
	}

	// Large interior chunks.

	val := uint(dbuf[0])<<18 | uint(dbuf[1])<<12 | uint(dbuf[2])<<6 | uint(dbuf[3])
	dbuf[2], dbuf[1], dbuf[0] = byte(val>>0), byte(val>>8), byte(val>>16)
	switch dlen {
	case 4:
		dst[2] = dbuf[2]
		dbuf[2] = 0
		fallthrough
	case 3:
		dst[1] = dbuf[1]
		if enc.strict && dbuf[2] != 0 {
			return si, 0, CorruptInputError(si - 1)
		}
		dbuf[1] = 0
		fallthrough
	case 2:

Cherry Zhang <******@****.***> 1596156569 -0400

John Howard <******@****.***> 1646536079 -0800

		fmt.Printf("%s NumGoroutine: want %d; got %d\n", label, want, n)
		return "", false
	}

	sbuf := make([]byte, 32<<10)
	sbuf = sbuf[:runtime.Stack(sbuf, true)]
	n = strings.Count(string(sbuf), "goroutine ")
	if n != want {
		fmt.Printf("%s Stack: want %d; got %d:\n%s\n", label, want, n, sbuf)
		return "", false
	}
	return string(sbuf), true
}

var callbackok bool

//export CallbackNumGoroutine

        synchronized (BUF) {
            System.arraycopy( sbuf, 0, BUF, 0, 4 + HEADER_LENGTH );
            int size = Encdec.dec_uint16be( BUF, 2 ) & 0xFFFF;
            if (size < (HEADER_LENGTH + 1) || (4 + size) > rcv_buf_size ) {
                throw new IOException( "Invalid payload size: " + size );
            }
            int errorCode = Encdec.dec_uint32le( BUF, 9 ) & 0xFFFFFFFF;