Turning on and off pduExpectingReply to follow through the stack

data-expecting-reply.py

import sys
from bacpypes.debugging import btox
from bacpypes.pdu import Address, PDU

from bacpypes.pdu import PDU
from bacpypes.apdu import APDU, ReadPropertyRequest
from bacpypes.npdu import NPDU

from bacpypes.analysis import decode_packet

if "debug" in sys.argv:
    from bacpypes.consolelogging import ConsoleLogHandler
    ConsoleLogHandler('bacpypes.apdu', color=3)
    ConsoleLogHandler('bacpypes.npdu', color=4)

# build a request
request = ReadPropertyRequest(
    objectIdentifier=("device", 1),
    propertyIdentifier="localDate",
    )
request.apduInvokeID = 1
request.apduMaxSegs = 1
request.apduMaxResp = 0x0F

request.pduDestination = Address('0x01020304')
request.pduNetworkPriority = 0

request.pduExpectingReply = int(sys.argv[1])

if "request" in sys.argv:
    print("request:")
    request.debug_contents()
    print("")

# encode as an APDU
apdu = APDU()
request.encode(apdu)

if "apdu" in sys.argv:
    print("apdu:")
    apdu.debug_contents()
    print("")

# encode the APDU into an NPDU
npdu = NPDU()
apdu.encode(npdu)

if "npdu" in sys.argv:
    print("npdu:")
    npdu.debug_contents()
    print("")

# encode the NPDU into a PDU
pdu = PDU()
npdu.encode(pdu)

print("pdu:")
pdu.debug_contents()
print("")

npdu = NPDU()
npdu.decode(pdu)

if "npdu" in sys.argv:
    print("")
    print("npdu:")
    npdu.debug_contents()

apdu = APDU()
apdu.decode(npdu)

if "apdu" in sys.argv:
    print("")
    print("apdu:")
    apdu.debug_contents()

request = ReadPropertyRequest()
request.decode(apdu)

if "request" in sys.argv:
    print("")
    print("request:")
    request.debug_contents()