// Skip the length prefix
	var length uint16
	if !s.ReadUint16(&length) {
		return nil, errMalformedECHConfig
	}
	if length != uint16(len(data)-2) {
		return nil, errMalformedECHConfig
	}
	var configs []echConfig
	for len(s) > 0 {
		var ec echConfig
		ec.raw = []byte(s)
		if !s.ReadUint16(&ec.Version) {
			return nil, errMalformedECHConfig
		}
		if !s.ReadUint16(&ec.Length) {
			return nil, errMalformedECHConfig
		}

			if len(extData) == 2 {
				if !extData.ReadUint16((*uint16)(&m.selectedGroup)) {
					return false
				}
			} else {
				if !extData.ReadUint16((*uint16)(&m.serverShare.group)) ||
					!readUint16LengthPrefixed(&extData, &m.serverShare.data) {
					return false
				}
			}
		case extensionPreSharedKey:
			m.selectedIdentityPresent = true
			if !extData.ReadUint16(&m.selectedIdentity) {
				return false
			}

		var nw uint32
		err := ReadConsole(fd.Sysfd, &fd.readuint16[:len(fd.readuint16)+1][len(fd.readuint16)], uint32(n), &nw, nil)
		if err != nil {
			return 0, err
		}
		uint16s := fd.readuint16[:len(fd.readuint16)+int(nw)]
		fd.readuint16 = fd.readuint16[:0]
		buf := fd.readbyte[:0]
		for i := 0; i < len(uint16s); i++ {
			r := rune(uint16s[i])
			if utf16.IsSurrogate(r) {
				if i+1 == len(uint16s) {
					if nw > 0 {

func (s *String) ReadUint8(out *uint8) bool {
	v := s.read(1)
	if v == nil {
		return false
	}
	*out = uint8(v[0])
	return true
}

// ReadUint16 decodes a big-endian, 16-bit value into out and advances over it.
// It reports whether the read was successful.
func (s *String) ReadUint16(out *uint16) bool {
	v := s.read(2)
	if v == nil {
		return false
	}
	*out = uint16(v[0])<<8 | uint16(v[1])
	return true
}

	ss := &SessionState{}
	s := cryptobyte.String(data)
	var typ, extMasterSecret, earlyData uint8
	var cert Certificate
	var extra cryptobyte.String
	if !s.ReadUint16(&ss.version) ||
		!s.ReadUint8(&typ) ||
		(typ != 1 && typ != 2) ||
		!s.ReadUint16(&ss.cipherSuite) ||
		!readUint64(&s, &ss.createdAt) ||
		!readUint8LengthPrefixed(&s, &ss.secret) ||
		!s.ReadUint24LengthPrefixed(&extra) ||

break;case 0xFFC0:case 0xFFC1:case 0xFFC2:readUint16();frame={};frame.extended=(fileMarker===0xFFC1);frame.progressive=(fileMarker===0xFFC2);frame.precision=data[offset++];frame.scanLines=readUint16();frame.samplesPerLine=readUint16();frame.components={};frame.componentsOrder=[];var componentsCount=data[offset++],componentId;var maxH=0,maxV=0;for(i=0;i<componentsCount;i++){componentId=data[offset];var h=data[offset+1]>>4;var v=data[offset+1]&15;var...