def _test_receive_extended_29bits(self):
self.wait_socket_ready()
addr = isotp.Address(isotp.AddressingMode.Extended_29bits, txid=self.stack_txid, rxid=self.stack_rxid, source_address=0x99, target_address=0x88)
self.stack.set_address(addr)
frame = self.process_stack_receive()
self.assertEqual(frame, b'a'*100)
def _test_transmit_extended_29bits(self):
self.wait_socket_ready()
addr = isotp.Address(isotp.AddressingMode.Extended_29bits, txid=self.stack_txid, rxid=self.stack_rxid, source_address=0x99, target_address=0x88)
self.stack.set_address(addr)
self.stack.send(b'b'*100)
self.process_stack_send()
import isotp
s = isotp.socket(timeout=10)
s2 = isotp.socket(timeout=10)
s.set_fc_opts(stmin=5, bs=10)
try:
while True:
s.bind("can1", isotp.Address(rxid=0x789, txid=0x56))
s2.bind("can1", isotp.Address(rxid=0x56, txid=0x789))
print(s.recv())
except KeyboardInterrupt:
print('\n\rKeyboard interrtupt')
import isotp
import socket
# Create the ISOTP socket to act as Car
s = isotp.socket()
s.bind("vcan0", isotp.Address(rxid=0x7DF, txid=0x7E8))
# Respond to requests as if you where a Car.
while (True):
request = s.recv()
if (request):
if (request == b"\x03"): # DTCs
s.send(b"\x00\x11\x22\xDE\xAD\xBE\xEF\xAA\xBB\xCC\xDD\xEE\xFF")
if (request == b"\x01\x0C"): # RPM
s.send(b"\x01\x0C\x0F\x0F")
if (request == b"\x01\x00"): # PIDS
s.send(b"\x01\x00\xFF\xFF\xFF\xFF")
if (request == b"\x01\x0D"): # SPEED
s.send(b"\x01\x0D\x00")
def test_11bits_extended_through_layer(self):
functional = isotp.TargetAddressType.Functional
physical = isotp.TargetAddressType.Physical
txid = 0x123
rxid = 0x456
sa = 0x55
ta = 0xAA
address = isotp.Address(isotp.AddressingMode.Extended_11bits, txid=txid, rxid=rxid, source_address=sa, target_address=ta)
layer = isotp.TransportLayer(txfn=self.stack_txfn, rxfn=self.stack_rxfn, address=address, params={'stmin':0, 'blocksize':0})
# Receive Single frame - Physical / Functional
self.simulate_rx_msg(Message(arbitration_id = rxid, data=bytearray([sa, 0x03, 0x01, 0x02, 0x03]), extended_id=False))
layer.process()
frame = layer.recv()
self.assertIsNotNone(frame)
self.assertEqual(frame, b'\x01\x02\x03')
# Receive multiframe - Physical
layer.reset()
self.simulate_rx_msg(Message(arbitration_id = rxid, data=bytearray([sa, 0x10, 0x08, 0x01, 0x02, 0x03, 0x04, 0x05]), extended_id=False))
layer.process()
self.assert_sent_flow_control(prefix=[ta], stmin=0, blocksize=0)
self.simulate_rx_msg(Message(arbitration_id = rxid, data=bytearray([sa, 0x21, 0x06, 0x07, 0x08]), extended_id=False))
layer.process()
frame = layer.recv()
self.assertIsNotNone(frame)
self.assertEqual(frame, b'\x01\x02\x03\x04\x05\x06\x07\x08')
#Transmit single frame - Physical
layer.reset()
layer.send(b'\x04\x05\x06', physical)
layer.process()
msg = self.get_tx_can_msg()
self.assertIsNotNone(msg)
self.assertEqual(msg.arbitration_id, txid)
self.assertEqual(msg.data, bytearray([ta, 0x03, 0x04, 0x05, 0x06]))
self.assertFalse(msg.is_extended_id)
#Transmit single frame - Functional
layer.reset()
layer.send(b'\x04\x05\x06', functional)
layer.process()
msg = self.get_tx_can_msg()
self.assertIsNotNone(msg)
self.assertEqual(msg.arbitration_id, txid)
self.assertEqual(msg.data, bytearray([ta, 0x03, 0x04, 0x05, 0x06]))
self.assertFalse(msg.is_extended_id)
#Transmit single frame - Functional; txdl=32
layer.reset()
layer.params.set('tx_data_length', 32)
layer.send(b'\x55' * 29, functional)
layer.process()
msg = self.get_tx_can_msg()
self.assertIsNotNone(msg)
self.assertEqual(msg.arbitration_id, txid)
self.assertEqual(msg.data, bytearray([ta, 0x00, 29] + [0x55]*29))
self.assertFalse(msg.is_extended_id)
#Transmit single frame - Functional; txdl=32
with self.assertRaises(ValueError):
layer.reset()
layer.params.set('tx_data_length', 32)
layer.send(b'\x55' * 30, functional)
layer.params.set('tx_data_length', 8)
# Transmit multiframe - Physical
layer.reset()
layer.send(b'\x04\x05\x06\x07\x08\x09\x0A\x0B', physical)
layer.process()
msg = self.get_tx_can_msg()
self.assertIsNotNone(msg)
self.assertEqual(msg.arbitration_id, txid)
self.assertEqual(msg.data, bytearray([ta, 0x10, 0x08, 0x04, 0x05, 0x06, 0x07, 0x08]))
self.assertFalse(msg.is_extended_id)
self.simulate_rx_msg(Message(arbitration_id=rxid, data=self.make_flow_control_data(flow_status=0, stmin=0, blocksize=0, prefix=[sa]), extended_id=False))
layer.process()
msg = self.get_tx_can_msg()
self.assertIsNotNone(msg)
self.assertEqual(msg.arbitration_id, txid)
self.assertEqual(msg.data, bytearray([ta, 0x21, 0x09, 0x0A, 0x0B]))
self.assertFalse(msg.is_extended_id)
s3 = isotp.socket()
s4 = isotp.socket()
s3.set_fc_opts(stmin=5, bs=10)
s5 = isotp.socket()
s6 = isotp.socket()
s6.set_fc_opts(stmin=5, bs=10)
print('Ready')
#time1 = []
count = 0
try:
while True:
count += 1
s.bind("can1", isotp.Address(rxid=0x123, txid=0x45))
s2.bind("can1", isotp.Address(rxid=0x45, txid=0x123))
if s.recv() == b'start':
start = time.time()
continue
s5.bind("can0", isotp.Address(rxid=0x123, txid=0x47))
s6.bind("can0", isotp.Address(rxid=0x47, txid=0x123))
if s5.recv() == b'end':
end = time.time()
break
s3.bind("can0", isotp.Address(rxid=0x123, txid=0x46))
s4.bind("can0", isotp.Address(rxid=0x46, txid=0x123))
print(" The received message is :", s3.recv())
#print(' {}\n'.format(c+s))
except KeyboardInterrupt:
def test_29bits_mixed(self):
ta = 0x55
sa = 0xAA
ae = 0x99
rxid_physical = 0x18CEAA55
rxid_functional = 0x18CDAA55
txid_physical = 0x18CE55AA
txid_functional = 0x18CD55AA
address = isotp.Address(isotp.AddressingMode.Mixed_29bits,
source_address=sa,
target_address=ta,
address_extension=ae)
self.assertFalse(
address.is_for_me(Message(rxid_physical,
extended_id=True))) # No data
self.assertFalse(
address.is_for_me(Message(rxid_functional,
extended_id=True))) # No data
self.assertFalse(
address.is_for_me(Message(txid_physical,
extended_id=True))) # No data
self.assertFalse(
address.is_for_me(Message(txid_functional,
extended_id=True))) # No data
self.assertTrue(
address.is_for_me(
Message(rxid_physical, data=bytearray([ae]),
extended_id=True)))
self.assertFalse(
address.is_for_me(
Message(rxid_physical, data=bytearray([ae]),
extended_id=False)))
self.assertTrue(
address.is_for_me(
Message(rxid_functional,
data=bytearray([ae]),
extended_id=True)))
self.assertFalse(
address.is_for_me(
Message(rxid_functional,
data=bytearray([ae]),
extended_id=False)))
self.assertFalse(
address.is_for_me(
Message(txid_physical, data=bytearray([ae]),
extended_id=True)))
self.assertFalse(
address.is_for_me(
Message(txid_functional,
data=bytearray([ae]),
extended_id=True)))
self.assertEqual(
address.get_tx_arbitraton_id(isotp.TargetAddressType.Physical),
txid_physical)
self.assertEqual(
address.get_tx_arbitraton_id(isotp.TargetAddressType.Functional),
txid_functional)
self.assertEqual(
address.get_rx_arbitraton_id(isotp.TargetAddressType.Physical),
rxid_physical)
self.assertEqual(
address.get_rx_arbitraton_id(isotp.TargetAddressType.Functional),
rxid_functional)
def create_socket(rxid, txid):
socket = isotp.socket()
socket.set_opts(socket.flags.LISTEN_MODE)
socket.bind(CAN_INTERFACE, isotp.Address(rxid=rxid, txid=txid))
return socket
def test_29bits_normal_through_layer(self):
functional = isotp.TargetAddressType.Functional
physical = isotp.TargetAddressType.Physical
rxid = 0x123456
txid = 0x789ABC
address = isotp.Address(isotp.AddressingMode.Normal_29bits,
txid=txid,
rxid=rxid)
layer = isotp.TransportLayer(txfn=self.stack_txfn,
rxfn=self.stack_rxfn,
address=address,
params={
'stmin': 0,
'blocksize': 0
})
# Receive Single frame - Physical
self.simulate_rx_msg(
Message(arbitration_id=rxid,
data=bytearray([0x03, 0x01, 0x02, 0x03]),
extended_id=True))
layer.process()
frame = layer.recv()
self.assertIsNotNone(frame)
self.assertEqual(frame, b'\x01\x02\x03')
# Receive Single frame - Functional
layer.reset()
self.simulate_rx_msg(
Message(arbitration_id=rxid,
data=bytearray([0x03, 0x01, 0x02, 0x03]),
extended_id=True))
layer.process()
frame = layer.recv()
self.assertIsNotNone(frame)
self.assertEqual(frame, b'\x01\x02\x03')
# Receive multiframe - Physical
layer.reset()
self.simulate_rx_msg(
Message(arbitration_id=rxid,
data=bytearray(
[0x10, 0x08, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06]),
extended_id=True))
layer.process()
self.assert_sent_flow_control(stmin=0, blocksize=0)
self.simulate_rx_msg(
Message(arbitration_id=rxid,
data=bytearray([0x21, 0x07, 0x08]),
extended_id=True))
layer.process()
frame = layer.recv()
self.assertIsNotNone(frame)
self.assertEqual(frame, b'\x01\x02\x03\x04\x05\x06\x07\x08')
#Transmit single frame - Physical / Functional
layer.reset()
layer.send(b'\x04\x05\x06', physical)
layer.process()
msg = self.get_tx_can_msg()
self.assertIsNotNone(msg)
self.assertEqual(msg.arbitration_id, txid)
self.assertEqual(msg.data, bytearray([0x03, 0x04, 0x05, 0x06]))
self.assertTrue(msg.is_extended_id)
# Transmit multiframe - Physical
layer.reset()
layer.send(b'\x04\x05\x06\x07\x08\x09\x0A\x0B', physical)
layer.process()
msg = self.get_tx_can_msg()
self.assertIsNotNone(msg)
self.assertEqual(msg.arbitration_id, txid)
self.assertEqual(
msg.data,
bytearray([0x10, 0x08, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09]))
self.assertTrue(msg.is_extended_id)
self.simulate_rx_msg(
Message(arbitration_id=rxid,
data=self.make_flow_control_data(flow_status=0,
stmin=0,
blocksize=0),
extended_id=True))
layer.process()
msg = self.get_tx_can_msg()
self.assertIsNotNone(msg)
self.assertEqual(msg.arbitration_id, txid)
self.assertEqual(msg.data, bytearray([0x21, 0x0A, 0x0B]))
self.assertTrue(msg.is_extended_id)
def test_single_frame_only_function_tatype(self):
tatype = isotp.TargetAddressType.Functional
address = isotp.Address(isotp.AddressingMode.Normal_11bits,
txid=1,
rxid=2)
layer = isotp.TransportLayer(txfn=self.stack_txfn,
rxfn=self.stack_rxfn,
address=address)
layer.send(self.make_payload(7), tatype)
with self.assertRaises(ValueError):
layer.send(self.make_payload(8), tatype)
address = isotp.Address(isotp.AddressingMode.Normal_29bits,
txid=1,
rxid=2)
layer = isotp.TransportLayer(txfn=self.stack_txfn,
rxfn=self.stack_rxfn,
address=address)
layer.send(self.make_payload(7), tatype)
with self.assertRaises(ValueError):
layer.send(self.make_payload(8), tatype)
address = isotp.Address(isotp.AddressingMode.NormalFixed_29bits,
source_address=1,
target_address=2)
layer = isotp.TransportLayer(txfn=self.stack_txfn,
rxfn=self.stack_rxfn,
address=address)
layer.send(self.make_payload(7), tatype)
with self.assertRaises(ValueError):
layer.send(self.make_payload(8), tatype)
address = isotp.Address(isotp.AddressingMode.Extended_11bits,
txid=1,
rxid=2,
target_address=3)
layer = isotp.TransportLayer(txfn=self.stack_txfn,
rxfn=self.stack_rxfn,
address=address)
layer.send(self.make_payload(6), tatype)
with self.assertRaises(ValueError):
layer.send(self.make_payload(7), tatype)
address = isotp.Address(isotp.AddressingMode.Extended_29bits,
txid=1,
rxid=2,
target_address=3)
layer = isotp.TransportLayer(txfn=self.stack_txfn,
rxfn=self.stack_rxfn,
address=address)
layer.send(self.make_payload(6), tatype)
with self.assertRaises(ValueError):
layer.send(self.make_payload(7), tatype)
address = isotp.Address(isotp.AddressingMode.Mixed_11bits,
txid=1,
rxid=2,
address_extension=3)
layer = isotp.TransportLayer(txfn=self.stack_txfn,
rxfn=self.stack_rxfn,
address=address)
layer.send(self.make_payload(6), tatype)
with self.assertRaises(ValueError):
layer.send(self.make_payload(7), tatype)
address = isotp.Address(isotp.AddressingMode.Mixed_29bits,
source_address=1,
target_address=2,
address_extension=3)
layer = isotp.TransportLayer(txfn=self.stack_txfn,
rxfn=self.stack_rxfn,
address=address)
layer.send(self.make_payload(6), tatype)
with self.assertRaises(ValueError):
layer.send(self.make_payload(7), tatype)
def find_services(
self,
skip_response_only_service_ids=False,
scan_only_known_uds_services=True,
payload_extra_byte=b'\x00',
add_extra_payload_byte=False,
):
list_of_known_uds_services = [
0x10, 0x11, 0x27, 0x28, 0x3E, 0x83, 0x84, 0x85, 0x86, 0x87, 0x22,
0x23, 0x24, 0x2A, 0x2C, 0x2E, 0x3D, 0x14, 0x19, 0x2F, 0x34, 0x35,
0x36, 0x37
]
if self._diagnostic_services_scan_complete:
return self.diagnostic_services
import isotp
import time
isotp_socket = isotp.socket()
isotp_socket.set_opts(txpad=0x00, rxpad=0x00)
address = isotp.Address(0,
rxid=self.response_id,
txid=self.physical_request_id)
isotp_socket.bind(self.socket_can_interface, address)
if not (0 <= self.start_service_id <= 0xFF):
self.start_service_id = 0
if not (0 <= self.end_service_id <= 0xFF):
self.end_service_id = 0xFF
self.end_service_id = self.end_service_id & 0xFF
self.start_service_id = self.start_service_id & 0xFF
if self.end_service_id > self.start_service_id:
increment_direction = 1
else:
increment_direction = -1
for service_id in range(self.start_service_id, self.end_service_id,
increment_direction):
if skip_response_only_service_ids and (
0x3E < service_id < 0x4F or 0x7E < service_id < 0x83
or 0xBE < service_id < 0xFF):
continue
if scan_only_known_uds_services and not (
service_id in list_of_known_uds_services):
continue
payload = service_id
# fix to correct for the payload length
if payload >= 0x10:
payload_length = (len(hex(payload)) - 2) >> 1
else:
payload_length = 1
payload_bytes = payload.to_bytes(payload_length, 'big')
if add_extra_payload_byte:
payload_bytes += b'\x00'
# Some services only work with Extra Data
isotp_socket.send(payload_bytes + payload_extra_byte)
recv = isotp_socket.recv()
current_time = time.time()
while recv is None:
loop_time = time.time()
recv = isotp_socket.recv()
if current_time + self.can_scan_timeout < loop_time:
break
if recv is not None:
response_service_id = recv[0]
if response_service_id == 0x7F:
nrc = recv[2]
'''if nrc == 0x7F or nrc == 0x80:
isotp_socket.send(b'\x10' + self.enhanced_mode_session_byte)
recv = isotp_socket.recv()
time.sleep(0.1)
isotp_socket.send(b_payload + (payload_extra_byte if add_extra_payload_byte else b''))
continue'''
if nrc == 0x11:
self.unsupported_service.add(service_id)
else:
self.supported_services.add(service_id)
else:
self.supported_services.add(service_id)
self.diagnostic_services = self.supported_services
self._diagnostic_services_scan_complete = True
return self.supported_services
2, # Not specified in standard. 2 bytes matches other services format.
'server_address_format': None, # 8,16,24,32,40
'server_memorysize_format': None, # 8,16,24,32,40
'data_identifiers': {
0x0200: MyCustomCodecThatShiftBy4,
0xD500: MyCustomCodecHex,
0xFE01: MyCustomCodecHex,
0xDF00: MyCustomCodecHex,
0xd472: MyCustomCodecHex
},
'input_output': {}
}
bus = VectorBus(channel=1, bitrate=500000) # Link Layer (CAN protocol)
tp_addr = isotp.Address(isotp.AddressingMode.Normal_11bits,
txid=0x7e1,
rxid=0x782) # Network layer addressing scheme
stack = isotp.CanStack(
bus=bus, address=tp_addr,
params=isotp_params) # Network/Transport layer (IsoTP protocol)
conn = PythonIsoTpConnection(
stack) # interface between Application and Transport layer
with Client(
conn, request_timeout=1,
config=client_config) as client: # Application layer (UDS protocol)
client.change_session(3)
response = client.request_seed(1)
#client.send_key(2, b'0001')
response = client.read_data_by_identifier(0x0200)
print(response)
client.clear_dtc(0xffffff)
def setUp(self):
self.vcan0_bus = self.make_bus()
addr = isotp.Address(isotp.AddressingMode.Normal_11bits, rxid=self.stack_rxid, txid=self.stack_txid)
self.conn = PythonIsoTpConnection(isotp.CanStack(bus=self.vcan0_bus, address=addr), name='unittest')
self.conn.open()
def _test_receive_mixed_29bits(self):
self.wait_socket_ready()
addr = isotp.Address(isotp.AddressingMode.Mixed_29bits, source_address=0x99, target_address=0x88, address_extension=0xDD)
self.stack.set_address(addr)
frame = self.process_stack_receive()
self.assertEqual(frame, b'c'*100)
def create_isotp_socket(receiver_address, target_address):
socket = isotp.socket()
socket.bind(CAN_INTERFACE,
isotp.Address(rxid=receiver_address, txid=target_address))
return socket
def _test_transmit_mixed_29bits(self):
self.wait_socket_ready()
addr = isotp.Address(isotp.AddressingMode.Mixed_29bits, source_address=0x99, target_address=0x88, address_extension=0xEE)
self.stack.set_address(addr)
self.stack.send(b'd'*100)
self.process_stack_send()
################################################################
################################################################
#initialize CAN ISOTP
################################################################
#CAN ISOTP is a higher level protocol used to transfer larger amounts of data than the base CAN allows
#this creates its own separate socket to the CAN bus on the same single wire can interface from the
#other standard can messaging that occurs in this script
SWCAN_ISOTP = isotp.socket() #default recv timeout is 0.1 seconds
SWCAN_ISOTP.set_fc_opts(
stmin=5, bs=10
) #see https://can-isotp.readthedocs.io/en/latest/isotp/socket.html#socket.set_fc_opts
SWCAN_ISOTP.bind(SWCANname, isotp.Address(rxid=1997, txid=1996))
class ReceiveInvoices(threading.Thread):
#this class holds the InvoiceQueue object, receives invoices, operates in another thread in daemon mode, and will shutdown if the .stop() method is used.
#not sure if the socket should be opened and closed from within here or not. to be re-visited at a later time.
#not sure if socket needs to be re-created every time SWCAN comes up.
#see also:
# https://stackoverflow.com/questions/47912701/python-how-can-i-implement-a-stoppable-thread
# https://stackoverflow.com/questions/40382332/example-usages-of-the-stoppablethread-subclass-of-pythons-threading-thread
# https://github.com/python/cpython/blob/2.7/Lib/threading.py#L743
# https://stackoverflow.com/questions/27102881/python-threading-self-stop-event-object-is-not-callable
def __init__(self, *args, **kwargs):
super(ReceiveInvoices, self).__init__(*args, **kwargs)
self._stop_event = threading.Event()
def test_29bits_mixed_through_layer(self):
functional = isotp.TargetAddressType.Functional
physical = isotp.TargetAddressType.Physical
ta = 0x55
sa = 0xAA
ae = 0x99
rxid_physical = 0x18CEAA55
rxid_functional = 0x18CDAA55
txid_physical = 0x18CE55AA
txid_functional = 0x18CD55AA
address = isotp.Address(isotp.AddressingMode.Mixed_29bits,
source_address=sa,
target_address=ta,
address_extension=ae)
layer = isotp.TransportLayer(txfn=self.stack_txfn,
rxfn=self.stack_rxfn,
address=address,
params={
'stmin': 0,
'blocksize': 0
})
# Receive Single frame - Physical
self.simulate_rx_msg(
Message(arbitration_id=rxid_physical,
data=bytearray([ae, 0x03, 0x01, 0x02, 0x03]),
extended_id=True))
layer.process()
frame = layer.recv()
self.assertIsNotNone(frame)
self.assertEqual(frame, b'\x01\x02\x03')
# Receive Single frame - Functional
layer.reset()
self.simulate_rx_msg(
Message(arbitration_id=rxid_functional,
data=bytearray([ae, 0x03, 0x01, 0x02, 0x03]),
extended_id=True))
layer.process()
frame = layer.recv()
self.assertIsNotNone(frame)
self.assertEqual(frame, b'\x01\x02\x03')
# Receive multiframe - Physical
layer.reset()
self.simulate_rx_msg(
Message(arbitration_id=rxid_physical,
data=bytearray(
[ae, 0x10, 0x08, 0x01, 0x02, 0x03, 0x04, 0x05]),
extended_id=True))
layer.process()
self.assert_sent_flow_control(prefix=[ae], stmin=0, blocksize=0)
self.simulate_rx_msg(
Message(arbitration_id=rxid_physical,
data=bytearray([ae, 0x21, 0x06, 0x07, 0x08]),
extended_id=True))
layer.process()
frame = layer.recv()
self.assertIsNotNone(frame)
self.assertEqual(frame, b'\x01\x02\x03\x04\x05\x06\x07\x08')
#Transmit single frame - Physical
layer.reset()
layer.send(b'\x04\x05\x06', physical)
layer.process()
msg = self.get_tx_can_msg()
self.assertIsNotNone(msg)
self.assertEqual(msg.arbitration_id, txid_physical)
self.assertEqual(msg.data, bytearray([ae, 0x03, 0x04, 0x05, 0x06]))
self.assertTrue(msg.is_extended_id)
#Transmit single frame - Functional
layer.reset()
layer.send(b'\x04\x05\x06', functional)
layer.process()
msg = self.get_tx_can_msg()
self.assertIsNotNone(msg)
self.assertEqual(msg.arbitration_id, txid_functional)
self.assertEqual(msg.data, bytearray([ae, 0x03, 0x04, 0x05, 0x06]))
self.assertTrue(msg.is_extended_id)
# Transmit multiframe - Physical
layer.reset()
layer.send(b'\x04\x05\x06\x07\x08\x09\x0A\x0B', physical)
layer.process()
msg = self.get_tx_can_msg()
self.assertIsNotNone(msg)
self.assertEqual(msg.arbitration_id, txid_physical)
self.assertEqual(
msg.data, bytearray([ae, 0x10, 0x08, 0x04, 0x05, 0x06, 0x07,
0x08]))
self.assertTrue(msg.is_extended_id)
self.simulate_rx_msg(
Message(arbitration_id=rxid_physical,
data=self.make_flow_control_data(flow_status=0,
stmin=0,
blocksize=0,
prefix=[ae]),
extended_id=True))
layer.process()
msg = self.get_tx_can_msg()
self.assertIsNotNone(msg)
self.assertEqual(msg.arbitration_id, txid_physical)
self.assertEqual(msg.data, bytearray([ae, 0x21, 0x09, 0x0A, 0x0B]))
self.assertTrue(msg.is_extended_id)
import isotp
from Crypto.Cipher import DES3
s = isotp.socket()
s2 = isotp.socket()
# Configuring the sockets.
s.set_fc_opts(stmin=5, bs=10)
#s.set_general_opts(...)
#s.set_ll_opts(...)
text = b'varun123'
key = "sixteen byte key"
print("The Triple DES key value :", key)
cipher = DES3.new(key, DES3.MODE_ECB)
encrypted_data = cipher.encrypt(text)
s.bind("can0", isotp.Address(rxid=0x123, txid=0x45))
s2.bind("can0", isotp.Address(rxid=0x45, txid=0x123))
s2.send(encrypted_data)
print(s.recv())
