code: def _server_analyse_frame(self, *, mpkit, mpfrm, mprsm, mpbuf):
          
          while True:
              # fetch frame
              # print(self._frnum, 'trying')
              frame = mpbuf.pop(self._frnum, None)
              if frame is EOFError:
                  break
              if frame is None:
                  continue
              # print(self._frnum, 'get')
  
              self._default_read_frame(frame=frame)
          mpfrm += self._frame
          mprsm += self._reasm
          mpkit.trace = copy.deepcopy(self._trace)
docs: Analyse frame.