// 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
		}

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
}