115     _handle = None  variable in _ConnectionBase
124         self._handle = handle
131         if self._handle is not None:
135         if self._handle is None:
156         return self._handle is None
171         return self._handle
175         if self._handle is not None:
179                 self._handle = None
277             _CloseHandle(self._handle)
280             ov, err = _winapi.WriteFile(self._handle, buf, overlapped=True)
301                     ov, err = _winapi.ReadFile(self._handle, bsize,
328                         _winapi.PeekNamedPipe(self._handle)[0] != 0):
336             left = _winapi.PeekNamedPipe(self._handle)[1]
340             ov, err = _winapi.ReadFile(self._handle, left, overlapped=True)
356             _close(self._handle)
361             _close(self._handle)
368             n = write(self._handle, buf)
376         handle = self._handle