def sendError(self, cause: int, destination=0):
"""
:param cause: the error cause.
:param destination: the PDU's destination property.
"""
pdu = X224ErrorPDU(destination, cause)
self.sendPDU(pdu)
def sendError(self, cause, **kwargs):
"""
:param cause: the error cause.
:type cause: int
"""
destination = kwargs.pop("destination", 0)
pdu = X224ErrorPDU(destination, cause)
self.previous.send(self.mainParser.write(pdu))
def parseError(self, data, length):
"""
Parse a Error PDU from the raw bytes
:type data: bytes
:param length: The length in bytes of the Error PDU.
:return: X224ErrorPDU
"""
if length < 4:
raise ParsingError("Invalid X224 Error PDU length indicator: indicator = %d, expected at least 4 bytes")
destination = Uint16BE.unpack(data[2 : 4])
cause = Uint8.unpack(data[4])
payload = data[5 :]
if len(payload) != length - 4:
raise ParsingError("Invalid X224 Error PDU payload length: expected = %d, length = %d" % (length - 4, len(payload)))
return X224ErrorPDU(destination, cause, payload)