code: def find_postgame(data, size):
      
      pos = None
      for i in range(size - SEARCH_MAX_BYTES, size - LOOKAHEAD):
          op_type, length, action_type = struct.unpack('<IIB', data[i:i + LOOKAHEAD])
          if op_type == 0x01 and length == POSTGAME_LENGTH and action_type == 0xFF:
              LOGGER.debug("found postgame candidate @ %d with length %d", i + LOOKAHEAD, length)
              return i + LOOKAHEAD, length
docs: Find postgame struct.
  
      We can find postgame location by scanning the last few
      thousand bytes of the rec and looking for a pattern as
      follows:
  
      [action op]    [action length]    [action type]
      01 00 00 00    30 08 00 00        ff
  
      The last occurance of this pattern signals the start of
      the postgame structure. Note that the postgame action length
      is always constant, unlike other actions.