code: def _read_mode_unpack(self, size, kind):
          
          data = dict(
              kind=kind,
              length=size,
              data=self._read_unpack(size),
          )
          return data
docs: Read options request unpack process.
  
          Keyword arguments:
              size - int, length of option
              kind - int, option kind value
  
          Returns:
              * dict -- extracted option which unpacked
  
          Structure of TCP options:
              Octets      Bits        Name                    Description
                0           0     tcp.opt.kind            Kind
                1           8     tcp.opt.length          Length
                2          16     tcp.opt.data            Kind-specific Data