152     def __init__(self, data):  argument
153         self.data = bytearray(data)
168     def parse(self, data):  argument
193         mhr_start = data.tell()
195         fc, seq = struct.unpack("<HB", data.read(3))
208             fcs = self._parse_fcs(data, data.tell())
236             dest_pan_id = struct.unpack("<H", data.read(2))[0]
240         dest_address = self._parse_address(data, dest_addr_mode)
257             src_pan_id = struct.unpack("<H", data.read(2))[0]
261         src_address = self._parse_address(data, source_addr_mode)
263         mhr_end = data.tell()
266             aux_sec_header = self._parse_aux_sec_header(data)
267             aux_sec_header_end = data.tell()
273         cur_pos = data.tell()
276         data.seek(-2, io.SEEK_END)
277         fcs_start = data.tell()
278         fcs = self._parse_fcs(data, fcs_start)
280         data.seek(fcs_start)
282             mic, payload_end = self._parse_mic(data, aux_sec_header.security_level)
290         data.seek(cur_pos)
292             header_ie = struct.unpack("<H", data.read(2))[0]
301             header_ie_content = data.read(header_ie_length)
310         data.seek(payload_pos)
311         payload = data.read(payload_len)
315             data.seek(mhr_start)
316             mhr_bytes = data.read(mhr_len)
319             aux_sec_hdr_bytes = data.read(aux_sec_header_len)
324                 data.seek(header_ie_start)
325                 extra_open_fields += data.read(header_ie_end - header_ie_start)
356             command_type = self.payload.data[0]
377     def _parse_address(self, data, mode):  argument
379             return MacAddress(data.read(2), MacAddressType.SHORT, big_endian=False)
382             return MacAddress(data.read(8), MacAddressType.LONG, big_endian=False)
387     def _parse_aux_sec_header(self, data):  argument
388         security_control, frame_counter = struct.unpack("<BL", data.read(5))
396             key_id = data.read(1)
398             key_id = data.read(5)
400             key_id = data.read(9)
412     def _parse_mic(self, data, security_level):  argument
414             data.seek(-4, io.SEEK_CUR)
415             payload_end = data.tell()
416             mic = data.read(4)
418             data.seek(-8, io.SEEK_CUR)
419             payload_end = data.tell()
420             mic = data.read(8)
422             data.seek(-16, io.SEEK_CUR)
423             payload_end = data.tell()
424             mic = data.read(16)
426             payload_end = data.tell()
430     def _parse_fcs(self, data, fcs_start):  argument
431         data.seek(fcs_start)
432         fcs = bytearray(data.read(2))