[InvalidResponseException] : service execution returned an invalid response. Reason : Payload is empty

[MasterCodeIT]

Sending back to back request give me this error:

[InvalidResponseException] : service execution returned an invalid response. Reason : Payload is empty

So I attempted to add an exception to resend a different byte when the error is flagged:

except InvalidResponseException as e: print('Server sent an invalid payload : %s' % e.response.original_payload) data = b'\x22\x20\x00' conn.send(data)

but received this:

<PositiveResponse: [TesterPresent] - 1 data bytes at 0x0a43d4f0> W1D2F3KD2JA29R791 [InvalidResponseException] : service execution returned an invalid response. Reason : Payload is empty Server sent an invalid payload : b'' <function conn.send at 0x05EFCBF8>

Any ideas? Not matter if I call different request, even added an ecureset request to the "except" but still no dice. It does not matter what I ask for. Individual works well, but back to back triggers this error

[MasterCodeIT]

full traceback below:

[InvalidResponseException] : service execution returned an invalid response. Reason : Payload is empty Server sent an invalid payload : b'' [InvalidResponseException] : service execution returned an invalid response. Reason : Payload is empty [InvalidResponseException] : service execution returned an invalid response. Reason : Payload is empty Traceback (most recent call last): File "\requests.py", line 368, in processB client.tester_present() File "\lib\site-packages\udsoncan\client.py", line 131, in decorated return func(self, *args, **kwargs) File "\lib\site-packages\udsoncan\client.py", line 332, in tester_present response = self.send_request(req) File "\lib\site-packages\udsoncan\client.py", line 1778, in send_request raise InvalidResponseException(response) udsoncan.exceptions.InvalidResponseException: service execution returned an invalid response. Reason : Payload is empty

During handling of the above exception, another exception occurred:

Traceback (most recent call last): File "\requests.py", line 380, in processB client.read_data_by_identifier_first(0xF190) File "lib\site-packages\udsoncan\client.py", line 131, in decorated return func(self, *args, **kwargs) File "lib\site-packages\udsoncan\client.py", line 358, in read_data_by_identifier_first response = self.read_data_by_identifier(didlist) File "\lib\site-packages\udsoncan\client.py", line 131, in decorated return func(self, *args, **kwargs) File "\lib\site-packages\udsoncan\client.py", line 389, in read_data_by_identifier response = self.send_request(req) File "\lib\site-packages\udsoncan\client.py", line 1778, in send_request raise InvalidResponseException(response) udsoncan.exceptions.InvalidResponseException: service execution returned an invalid response. Reason : Payload is empty

Process finished with exit code -1073740791 (0xC0000409)

[pylessard]

Hi, Can you share a CAN log? What Connection do you use?

[MasterCodeIT]

Hi, Can you share a CAN log?

I'll grab it and post it

What Connection do you use?

J2534 connection

[MasterCodeIT]

It is very odd, the minute I initiate a request, i can ask for it and it responds positive, but then if I try to request again, I get the error stating the payload is empty, even with the same request

[MasterCodeIT]

Click on ID button: <PositiveResponse: [TesterPresent] - 1 data bytes at 0x0a08ee50> 2021-08-13 17:33:06 [INFO] UdsClient: ReadDataByIdentifier<0x22> - Reading data identifier : 0xf190 (VINDataIdentifier) 2021-08-13 17:33:06 [DEBUG] Connection: Sending 3 bytes : [b'22f190'] 2021-08-13 17:33:06 [DEBUG] Connection: Received 20 bytes : [b'62f1905744445a46384b42324a41323933373932'] 2021-08-13 17:33:06 [INFO] UdsClient: Received positive response for service ReadDataByIdentifier (0x22) from server. W1D2F3KD2JA29R791 2021-08-13 17:33:06 [INFO] Connection: J2534 Connection closed

Wait 1 min, Click on ID button again (2nd time) processB initiated 2021-08-13 17:33:08 [INFO] Connection: J2534 Connection opened 2021-08-13 17:33:08 [INFO] UdsClient: TesterPresent<0x3e> - Sending TesterPresent request 2021-08-13 17:33:09 [DEBUG] Connection: Sending 2 bytes : [b'3e00'] 2021-08-13 17:33:09 [DEBUG] Connection: Received 0 bytes : [b''] 2021-08-13 17:33:09 [ERROR] UdsClient: [InvalidResponseException] : service execution returned an invalid response. Reason : Payload is empty Server sent an invalid payload : b'' 2021-08-13 17:33:09 [INFO] Connection: J2534 Connection closed

[MasterCodeIT]

Even sending the bytes raw:

Hit button 1st time: 2021-08-13 17:59:08 [INFO] Connection: J2534 Connection opened 2021-08-13 17:59:08 [DEBUG] Connection: Sending 3 bytes : [b'22f190'] 2021-08-13 17:59:08 [DEBUG] Connection: Received 20 bytes : [b'62f1905744445a46384b42324a41323933373932'] b'b\xf1\x90W1D2F3KD2JA29R791' 2021-08-13 17:59:08 [INFO] Connection: J2534 Connection closed

Hit button 2nd time: processB initiated 2021-08-13 17:59:12 [INFO] Connection: J2534 Connection opened 2021-08-13 17:59:12 [DEBUG] Connection: Sending 3 bytes : [b'22f190'] 2021-08-13 17:59:12 [DEBUG] Connection: Received 0 bytes : [b''] b'' 2021-08-13 17:59:12 [INFO] Connection: J2534 Connection closed

Hit button 3rd time: processB initiated 2021-08-13 17:59:15 [INFO] Connection: J2534 Connection opened 2021-08-13 17:59:15 [DEBUG] Connection: Sending 3 bytes : [b'22f190'] 2021-08-13 17:59:15 [DEBUG] Connection: Received 0 bytes : [b''] b'' 2021-08-13 17:59:15 [INFO] Connection: J2534 Connection closed

Hit button 4th time: processB initiated 2021-08-13 17:59:17 [INFO] Connection: J2534 Connection opened 2021-08-13 17:59:17 [DEBUG] Connection: Sending 3 bytes : [b'22f190'] 2021-08-13 17:59:17 [DEBUG] Connection: Received 0 bytes : [b''] b'' 2021-08-13 17:59:17 [INFO] Connection: J2534 Connection closed

[pylessard]

Hi, I can't help much unless you provide a CAN log. They usually are easy to get as most drivers will handle multiple subscribers. No need to add additional hardware, just a software that can read the CAN hardware input.