Exception raised converting A-ASSOCIATE-AC PDU to A-ASSOCIATE primitive #361

ylmzkaan · 2019-07-05T08:38:30Z

Hi, I know an issue similar to this has been discussed but it did not help.

For test purposes, I want to make a C-MOVE request to ONIS Dicom Server to store ct and mammography images. I added my AE-Title, ip and port to ONIS so it recognizes me. I propose PatientRootQueryRetrieveInformationModelMove context and support CTImageStorage and DigitalMammographyXRayImagePresentationStorage within my AE. However I get the following debug logs that says PatientRootQueryRetrieveInformationModelMove is rejected. In its dicom conformance statement, it is written that ONIS supports PatientRootQueryRetrieveInformationModelMove.

If I don't request PatientRootQueryRetrieveInformationModelMove but VerificationPresentationContexts, association establishes successfully but I can't make a C-MOVE obviously.

Logs:

INFO:root:Server started.
INFO:pynetdicom.assoc:Requesting Association
DEBUG:pynetdicom.events:Request Parameters:
DEBUG:pynetdicom.events:========================= BEGIN A-ASSOCIATE-RQ PDU =========================
DEBUG:pynetdicom.events:Our Implementation Class UID: 1.2.826.0.1.3680043.9.3811.1.3.1
DEBUG:pynetdicom.events:Our Implementation Version Name: PYNETDICOM_131
DEBUG:pynetdicom.events:Application Context Name: 1.2.840.10008.3.1.1.1
DEBUG:pynetdicom.events:Calling Application Name: EGE-AI
DEBUG:pynetdicom.events:Called Application Name: ONIS25
DEBUG:pynetdicom.events:Our Max PDU Receive Size: 16382
DEBUG:pynetdicom.events:Presentation Context:
DEBUG:pynetdicom.events: Context ID: 1 (Proposed)
DEBUG:pynetdicom.events: Abstract Syntax: =Patient Root Query/Retrieve Information Model - MOVE
DEBUG:pynetdicom.events: Proposed SCP/SCU Role: Default
DEBUG:pynetdicom.events: Proposed Transfer Syntaxes:
DEBUG:pynetdicom.events: =Implicit VR Little Endian
DEBUG:pynetdicom.events: =Explicit VR Little Endian
DEBUG:pynetdicom.events: =Explicit VR Big Endian
DEBUG:pynetdicom.events:Requested Extended Negotiation: None
DEBUG:pynetdicom.events:Requested Common Extended Negotiation: None
DEBUG:pynetdicom.events:Requested Asynchronous Operations Window Negotiation: None
DEBUG:pynetdicom.events:Requested User Identity Negotiation: None
DEBUG:pynetdicom.events:========================== END A-ASSOCIATE-RQ PDU ==========================
DEBUG:pynetdicom.events:Accept Parameters:
DEBUG:pynetdicom.events:========================= BEGIN A-ASSOCIATE-AC PDU =========================
DEBUG:pynetdicom.events:Their Implementation Class UID: 1.2.392.200193
DEBUG:pynetdicom.events:Their Implementation Version Name: ONIS_Server 2.5
DEBUG:pynetdicom.events:Application Context Name: 1.2.840.10008.3.1.1.1
DEBUG:pynetdicom.events:Calling Application Name: EGE-AI
DEBUG:pynetdicom.events:Called Application Name: ONIS25
DEBUG:pynetdicom.events:Their Max PDU Receive Size: 16382
DEBUG:pynetdicom.events:Presentation Contexts:
DEBUG:pynetdicom.events: Context ID: 1 (Rejected - Abstract Syntax Not Supported)
DEBUG:pynetdicom.events: Abstract Syntax: =Patient Root Query/Retrieve Information Model - MOVE
DEBUG:pynetdicom.events:Accepted Extended Negotiation: None
DEBUG:pynetdicom.events:Accepted Asynchronous Operations Window Negotiation: None
DEBUG:pynetdicom.events:User Identity Negotiation Response: None
DEBUG:pynetdicom.events:========================== END A-ASSOCIATE-AC PDU ==========================
ERROR:pynetdicom.dul:Exception in DUL.run(), aborting association
ERROR:pynetdicom.dul:list index out of range
Traceback (most recent call last):
File "D:\Ege\DicomServer\venv\lib\site-packages\pynetdicom\dul.py", line 400, in run
elif self._is_transport_event():
File "D:\Ege\DicomServer\venv\lib\site-packages\pynetdicom\dul.py", line 188, in _is_transport_event
self._read_pdu_data()
File "D:\Ege\DicomServer\venv\lib\site-packages\pynetdicom\dul.py", line 324, in _read_pdu_data
self.primitive = self.pdu.to_primitive()
File "D:\Ege\DicomServer\venv\lib\site-packages\pynetdicom\pdu.py", line 892, in to_primitive
item.to_primitive()
File "D:\Ege\DicomServer\venv\lib\site-packages\pynetdicom\pdu_items.py", line 860, in to_primitive
self.transfer_syntax_sub_item[0].transfer_syntax_name
IndexError: list index out of range
ERROR:root:Association rejected, aborted or never connected

Code:

import logging

from pydicom.dataset import Dataset
from pynetdicom import AE, StoragePresentationContexts, evt
from pynetdicom.sop_class import (
    CTImageStorage, DigitalMammographyXRayImagePresentationStorage,
    PatientRootQueryRetrieveInformationModelMove)

from config import AE_TITLE, PEER_AE_TITLE, PEER_IP, PEER_PORT, PORT
from EventHandlers import handle_store

logging.basicConfig(level=logging.DEBUG)


def moveDataset(aeTitle, port, peerAeTitle, peerIP, peerPort, ds):

    ae = _initAE(aeTitle)
    # Start our Storage SCP in non-blocking mode, listening on port 11120
    handlers = [(evt.EVT_C_STORE, handle_store)]
    scp = ae.start_server(('', port), block=False, evt_handlers=handlers)
    logging.info("Server started.")

    try:
        # Associate with peer AE
        assoc = ae.associate(peerIP, peerPort, ae_title=peerAeTitle)
        if assoc.is_established:
            logging.info("Association established")
            _moveDatasetOverAssociation(assoc, ds)
            # Release the association
            assoc.release()
        else:
            logging.error('Association rejected, aborted or never connected')
    finally:
        # Stop Storage SCP
        scp.shutdown()

def _initAE(aeTitle):
    # Initialise the Application Entity
    ae = AE(ae_title=aeTitle)
    ae.add_requested_context(PatientRootQueryRetrieveInformationModelMove)
    # Add the Storage SCP's supported presentation contexts
    ae.add_supported_context(CTImageStorage)
    ae.add_supported_context(DigitalMammographyXRayImagePresentationStorage)
    return ae

def _moveDatasetOverAssociation(assoc, dataset):

    responses = assoc.send_c_move(dataset, assoc.ae.ae_title, query_model='P')

    for (status, identifier) in responses:
        if status:
            logging.debug('C-MOVE query status: 0x{0:04x}'.format(status.Status))

            # If the status is 'Pending' then `identifier` is the C-MOVE response
            if status.Status in (0xFF00, 0xFF01):
                logging.debug(identifier)
        else:
            logging.error('Connection timed out, was aborted or received invalid response')

if __name__ == "__main__":
    # Create out identifier (query) dataset
    ds = Dataset()
    ds.AccessionNumber = 'EU0000688977' # Balkan, Esma
    
    moveDataset(AE_TITLE, PORT, PEER_AE_TITLE, PEER_IP, PEER_PORT,ds)

config.py

AE_TITLE = b'EGE-AI'
PORT = 106

PEER_AE_TITLE = b'ONIS25'
PEER_IP = "127.0.0.1"
PEER_PORT = 104

The text was updated successfully, but these errors were encountered:

scaramallion · 2019-07-07T01:08:04Z

I think this is because the Move SCP isn't sending any Transfer Syntax Sub-Item at all for the rejected presentation context in its A-ASSOCIATE-AC message (which is non-conformant), but I'd like to confirm that's the case. Could you add the following handler to evt.EVT_DATA_RECV on your Move SCU and post the output?

from pynetdicom.utils import pretty_bytes

def handle_data(event):
    slist = pretty_bytes(event.data, prefix='', max_size=None)

    # Only print out the A-ASSOCIATE-AC data
    if slist[0][0:2] == '02':
        for ss in slist:
            print(ss)

I should be able to add a workaround if so.

scaramallion · 2019-07-07T04:48:25Z

I've added a workaround for what I think is the problem. I'd appreciate it if you could:

Post the evt.EVT_DATA_RECV output as suggested in my previous comment (since I'd like to confirm that's the cause)
After posting the output, update to the current master and see if it helps.

ylmzkaan · 2019-07-07T09:54:32Z

Unfortunately, nothing seems to be printed by handle_data(). In fact, the handler isn't triggered at all. I updated to the current master and the issue still present. Here is the output anyway:

INFO:root:Server started.
INFO:pynetdicom.assoc:Requesting Association
DEBUG:pynetdicom.events:Request Parameters:
DEBUG:pynetdicom.events:========================= BEGIN A-ASSOCIATE-RQ PDU =========================
DEBUG:pynetdicom.events:Our Implementation Class UID: 1.2.826.0.1.3680043.9.3811.1.3.1
DEBUG:pynetdicom.events:Our Implementation Version Name: PYNETDICOM_131
DEBUG:pynetdicom.events:Application Context Name: 1.2.840.10008.3.1.1.1
DEBUG:pynetdicom.events:Calling Application Name: EGE-AI
DEBUG:pynetdicom.events:Called Application Name: ONIS25
DEBUG:pynetdicom.events:Our Max PDU Receive Size: 16382
DEBUG:pynetdicom.events:Presentation Context:
DEBUG:pynetdicom.events: Context ID: 1 (Proposed)
DEBUG:pynetdicom.events: Abstract Syntax: =Patient Root Query/Retrieve Information Model - MOVE
DEBUG:pynetdicom.events: Proposed SCP/SCU Role: Default
DEBUG:pynetdicom.events: Proposed Transfer Syntaxes:
DEBUG:pynetdicom.events: =Implicit VR Little Endian
DEBUG:pynetdicom.events: =Explicit VR Little Endian
DEBUG:pynetdicom.events: =Explicit VR Big Endian
DEBUG:pynetdicom.events:Requested Extended Negotiation: None
DEBUG:pynetdicom.events:Requested Common Extended Negotiation: None
DEBUG:pynetdicom.events:Requested Asynchronous Operations Window Negotiation: None
DEBUG:pynetdicom.events:Requested User Identity Negotiation: None
DEBUG:pynetdicom.events:========================== END A-ASSOCIATE-RQ PDU ==========================
DEBUG:pynetdicom.events:Accept Parameters:
DEBUG:pynetdicom.events:========================= BEGIN A-ASSOCIATE-AC PDU =========================
DEBUG:pynetdicom.events:Their Implementation Class UID: 1.2.392.200193
DEBUG:pynetdicom.events:Their Implementation Version Name: ONIS_Server 2.5
DEBUG:pynetdicom.events:Application Context Name: 1.2.840.10008.3.1.1.1
DEBUG:pynetdicom.events:Calling Application Name: EGE-AI
DEBUG:pynetdicom.events:Called Application Name: ONIS25
DEBUG:pynetdicom.events:Their Max PDU Receive Size: 16382
DEBUG:pynetdicom.events:Presentation Contexts:
DEBUG:pynetdicom.events: Context ID: 1 (Rejected - Abstract Syntax Not Supported)
DEBUG:pynetdicom.events: Abstract Syntax: =Patient Root Query/Retrieve Information Model - MOVE
DEBUG:pynetdicom.events:Accepted Extended Negotiation: None
DEBUG:pynetdicom.events:Accepted Asynchronous Operations Window Negotiation: None
DEBUG:pynetdicom.events:User Identity Negotiation Response: None
DEBUG:pynetdicom.events:========================== END A-ASSOCIATE-AC PDU ==========================
ERROR:pynetdicom.dul:Exception in DUL.run(), aborting association
ERROR:pynetdicom.dul:list index out of range
Traceback (most recent call last):
File "D:\Ege\DicomServer\venv\lib\site-packages\pynetdicom\dul.py", line 400, in run
elif self._is_transport_event():
File "D:\Ege\DicomServer\venv\lib\site-packages\pynetdicom\dul.py", line 188, in _is_transport_event
self._read_pdu_data()
File "D:\Ege\DicomServer\venv\lib\site-packages\pynetdicom\dul.py", line 324, in _read_pdu_data
self.primitive = self.pdu.to_primitive()
File "D:\Ege\DicomServer\venv\lib\site-packages\pynetdicom\pdu.py", line 892, in to_primitive
item.to_primitive()
File "D:\Ege\DicomServer\venv\lib\site-packages\pynetdicom\pdu_items.py", line 860, in to_primitive
self.transfer_syntax_sub_item[0].transfer_syntax_name
IndexError: list index out of range
ERROR:root:Association rejected, aborted or never connected

scaramallion · 2019-07-07T23:46:59Z

Can you double check you're using the current master? If you're using pip you'll have to reinstall it. The Our Implementation Version Name: PYNETDICOM_131 line should have PYNETDICOM_140 and also the line that's triggering the exception is no longer the same. A quick way to check is from pynetdicom import __version__; print(__version__)

Its strange that handle_data() isn't being called, you bound it and included in the AE.associate() call?

handlers = [(evt.EVT_DATA_RECV, handle_data)]
assoc = ae.associate(peerIP, peerPort, ae_title=peerAeTitle, evt_handlers=handlers)

ylmzkaan · 2019-07-08T09:41:12Z

You were right that the my version wasn't 1.40.dev0 and I tied the event handlers to the ae.start_server function not ae.associate. I fixed both of them. The Patient Root QR Move abstract syntax is still being rejected but here is the logging output and latest version of the code if you would like to take a look at it.

QRMoveSCU.py
EventHandlers.py

INFO:root:Server started.
INFO:pynetdicom.assoc:Requesting Association
DEBUG:pynetdicom.events:Request Parameters:
DEBUG:pynetdicom.events:========================= BEGIN A-ASSOCIATE-RQ PDU =========================
DEBUG:pynetdicom.events:Our Implementation Class UID: 1.2.826.0.1.3680043.9.3811.1.4.0
DEBUG:pynetdicom.events:Our Implementation Version Name: PYNETDICOM_140
DEBUG:pynetdicom.events:Application Context Name: 1.2.840.10008.3.1.1.1
DEBUG:pynetdicom.events:Calling Application Name: EGE-AI
DEBUG:pynetdicom.events:Called Application Name: ONIS25
DEBUG:pynetdicom.events:Our Max PDU Receive Size: 16382
DEBUG:pynetdicom.events:Presentation Context:
DEBUG:pynetdicom.events: Context ID: 1 (Proposed)
DEBUG:pynetdicom.events: Abstract Syntax: =Patient Root Query/Retrieve Information Model - MOVE
DEBUG:pynetdicom.events: Proposed SCP/SCU Role: Default
DEBUG:pynetdicom.events: Proposed Transfer Syntaxes:
DEBUG:pynetdicom.events: =Implicit VR Little Endian
DEBUG:pynetdicom.events: =Explicit VR Little Endian
DEBUG:pynetdicom.events: =Explicit VR Big Endian
DEBUG:pynetdicom.events:Requested Extended Negotiation: None
DEBUG:pynetdicom.events:Requested Common Extended Negotiation: None
DEBUG:pynetdicom.events:Requested Asynchronous Operations Window Negotiation: None
DEBUG:pynetdicom.events:Requested User Identity Negotiation: None
DEBUG:pynetdicom.events:========================== END A-ASSOCIATE-RQ PDU ==========================
02 00 00 00 00 96 00 01 00 00 4f 4e 49 53 32 35
20 20 20 20 20 20 20 20 20 20 45 47 45 2d 41 49
20 20 20 20 20 20 20 20 20 20 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 10 00 00 15 31 2e
32 2e 38 34 30 2e 31 30 30 30 38 2e 33 2e 31 2e
31 2e 31 21 00 00 04 01 00 03 00 50 00 00 2d 51
00 00 04 00 00 3f fe 52 00 00 0e 31 2e 32 2e 33
39 32 2e 32 30 30 31 39 33 55 00 00 0f 4f 4e 49
53 5f 53 65 72 76 65 72 20 32 2e 35
DEBUG:pynetdicom.events:Accept Parameters:
DEBUG:pynetdicom.events:========================= BEGIN A-ASSOCIATE-AC PDU =========================
DEBUG:pynetdicom.events:Their Implementation Class UID: 1.2.392.200193
DEBUG:pynetdicom.events:Their Implementation Version Name: ONIS_Server 2.5
DEBUG:pynetdicom.events:Application Context Name: 1.2.840.10008.3.1.1.1
DEBUG:pynetdicom.events:Calling Application Name: EGE-AI
DEBUG:pynetdicom.events:Called Application Name: ONIS25
DEBUG:pynetdicom.events:Their Max PDU Receive Size: 16382
DEBUG:pynetdicom.events:Presentation Contexts:
DEBUG:pynetdicom.events: Context ID: 1 (Rejected - Abstract Syntax Not Supported)
DEBUG:pynetdicom.events: Abstract Syntax: =Patient Root Query/Retrieve Information Model - MOVE
DEBUG:pynetdicom.events:Accepted Extended Negotiation: None
DEBUG:pynetdicom.events:Accepted Asynchronous Operations Window Negotiation: None
DEBUG:pynetdicom.events:User Identity Negotiation Response: None
DEBUG:pynetdicom.events:========================== END A-ASSOCIATE-AC PDU ==========================
ERROR:pynetdicom.acse:No accepted presentation contexts
DEBUG:pynetdicom.events:Abort Parameters:
DEBUG:pynetdicom.events:============================ BEGIN A-ABORT PDU =============================
DEBUG:pynetdicom.events:Abort Source: DUL service-provider
DEBUG:pynetdicom.events:Abort Reason: No reason given
DEBUG:pynetdicom.events:============================= END A-ABORT PDU ==============================
ERROR:root:Association rejected, aborted or never connected

scaramallion · 2019-07-09T00:29:15Z

Thanks! As I thought, the Presentation Context (AC) Item is missing a Transfer Syntax Sub-item. In its entirety, the encoded item is 21 00 00 04 01 00 03 00.

The context itself has been rejected by the Move SCP due to an unsupported abstract syntax (the 03 in the encoded item). I suspect the problem lies with the configuration of the Onis server (this page seems to indicate that the remote must be added to the server config and have Move rights enabled). So while the conformance statement says that Onis supports your requested context, you'd need to configure the server properly before you can actually use it.

ylmzkaan added the question label Jul 5, 2019

scaramallion added triage and removed question labels Jul 7, 2019

scaramallion changed the title ~~Rejected - Abstract Syntax: Patient Root Query/Retrieve Information Model - MOVE~~ Exception raised decoding rejected A-ASSOCIATE-AC PDU Jul 7, 2019

scaramallion changed the title ~~Exception raised decoding rejected A-ASSOCIATE-AC PDU~~ Exception raised decoding A-ASSOCIATE-AC PDU Jul 7, 2019

scaramallion changed the title ~~Exception raised decoding A-ASSOCIATE-AC PDU~~ Exception raised converting A-ASSOCIATE-AC PDU to A-ASSOCIATE primitive Jul 7, 2019

scaramallion mentioned this issue Jul 7, 2019

[MRG] Handle Presentation Context AC with no Transfer Syntax Sub-item #362

Merged

3 tasks

scaramallion added enhancement and removed triage labels Jul 9, 2019

ylmzkaan closed this as completed Jul 9, 2019

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Exception raised converting A-ASSOCIATE-AC PDU to A-ASSOCIATE primitive #361

Exception raised converting A-ASSOCIATE-AC PDU to A-ASSOCIATE primitive #361

ylmzkaan commented Jul 5, 2019 •

edited

scaramallion commented Jul 7, 2019 •

edited

scaramallion commented Jul 7, 2019

ylmzkaan commented Jul 7, 2019 •

edited

scaramallion commented Jul 7, 2019 •

edited

ylmzkaan commented Jul 8, 2019

scaramallion commented Jul 9, 2019 •

edited

Exception raised converting A-ASSOCIATE-AC PDU to A-ASSOCIATE primitive #361

Exception raised converting A-ASSOCIATE-AC PDU to A-ASSOCIATE primitive #361

Comments

ylmzkaan commented Jul 5, 2019 • edited

scaramallion commented Jul 7, 2019 • edited

scaramallion commented Jul 7, 2019

ylmzkaan commented Jul 7, 2019 • edited

scaramallion commented Jul 7, 2019 • edited

ylmzkaan commented Jul 8, 2019

scaramallion commented Jul 9, 2019 • edited

ylmzkaan commented Jul 5, 2019 •

edited

scaramallion commented Jul 7, 2019 •

edited

ylmzkaan commented Jul 7, 2019 •

edited

scaramallion commented Jul 7, 2019 •

edited

scaramallion commented Jul 9, 2019 •

edited