def AA_7(dul: "DULServiceProvider") -> str:
"""Association abort AA-7.
If receive a association request or invalid PDU while waiting for
connection to close, send A-ABORT PDU
State-event triggers: Sta13 + Evt6/Evt19
Parameters
----------
dul : dul.DULServiceProvider
The DICOM Upper Layer Service instance for the local AE
Returns
-------
str
``'Sta13'``, the next state of the state machine
"""
primitive = A_P_ABORT()
primitive.provider_reason = 0x02
# Send A-ABORT PDU
dul._send(A_ABORT_RQ(primitive))
return "Sta13"
def send_ap_abort(self, reason):
"""Send an A-P-ABORT to the peer.
Parameters
----------
reason : int
The reason for aborting the association, one of the following:
- ``0x00`` - reason not specified
- ``0x01`` - unrecognised PDU
- ``0x02`` - unexpected PDU
- ``0x04`` - unrecognised PDU parameter
- ``0x05`` - unexpected PDU parameter
- ``0x06`` - invalid PDU parameter value
Raises
------
ValueError
If the `reason` value is invalid.
"""
if reason not in [0x00, 0x01, 0x02, 0x04, 0x05, 0x06]:
raise ValueError("Invalid 'reason' parameter value")
# The following parameters must be set for an A-P-ABORT primitive
# (* sent in A-ABORT PDU):
# Abort Source* (always 0x02)
# Provider Reason*
primitive = A_P_ABORT()
primitive.provider_reason = reason
self.dul.send_pdu(primitive)
self.assoc.is_aborted = True
self.assoc.is_established = False
def AA_4(dul: "DULServiceProvider") -> str:
"""Association abort AA-4.
If connection closed, issue A-P-ABORT and return to Idle
State-event triggers: Sta3/Sta4/Sta5/Sta6/Sta7/Sta8/Sta9/Sta10/Sta11/Sta12
+ Evt17
Parameters
----------
dul : dul.DULServiceProvider
The DICOM Upper Layer Service instance for the local AE
Returns
-------
str
``'Sta1'``, the next state of the state machine
"""
assoc = dul.assoc
assoc.dimse.msg_queue.put((None, None))
remote = assoc.acceptor if assoc.is_requestor else assoc.requestor
address = (remote.address, remote.port)
evt.trigger(dul.assoc, evt.EVT_CONN_CLOSE, {"address": address})
# Issue A-P-ABORT indication primitive.
primitive = A_P_ABORT()
primitive.provider_reason = 0x00
dul.to_user_queue.put(primitive)
dul.kill_dul()
return "Sta1"
def AA_7(dul):
"""Association abort AA-7.
If receive a association request or invalid PDU while waiting for
connection to close, send A-ABORT PDU
State-event triggers: Sta13 + Evt6/Evt19
Parameters
----------
dul : dul.DULServiceProvider
The DICOM Upper Layer Service instance for the local AE
Returns
-------
str
``'Sta13'``, the next state of the state machine
"""
primitive = A_P_ABORT()
primitive.provider_reason = 0x02
# Send A-ABORT PDU.
pdu = A_ABORT_RQ()
pdu.from_primitive(primitive)
dul.socket.send(dul.pdu.encode())
evt.trigger(dul.assoc, evt.EVT_PDU_SENT, {'pdu': dul.pdu})
return 'Sta13'
def send_ap_abort(assoc, reason):
"""Send an A-P-ABORT to the peer.
Parameters
----------
assoc : pynetdicom.association.Association
The association that is sending the A-P-ABORT.
reason : int
The reason for aborting the association, one of the following:
- 0x00 - reason not specified
- 0x01 - unrecognised PDU
- 0x02 - unexpected PDU
- 0x04 - unrecognised PDU parameter
- 0x05 - unexpected PDU parameter
- 0x06 - invalid PDU parameter value
Raises
------
ValueError
If the `reason` value is invalid.
"""
if reason not in [0x00, 0x01, 0x02, 0x04, 0x05, 0x06]:
raise ValueError("Invalid 'reason' parameter value")
# The following parameters must be set for an A-P-ABORT primitive
# (* sent in A-ABORT PDU):
# Abort Source* (always 0x02)
# Provider Reason*
primitive = A_P_ABORT()
primitive.provider_reason = reason
assoc.dul.send_pdu(primitive)
assoc.is_aborted = True
assoc.is_established = False
def test_exceptions(self):
""" Check incorrect types/values for properties raise exceptions """
primitive = A_P_ABORT()
with pytest.raises(ValueError):
primitive.provider_reason = 3
with pytest.raises(ValueError):
primitive.provider_reason
def test_conversion(self):
""" Check conversion to a PDU produces the correct output """
primitive = A_P_ABORT()
primitive.provider_reason = 4
pdu = A_ABORT_RQ()
pdu.from_primitive(primitive)
data = pdu.encode()
assert data == b"\x07\x00\x00\x00\x00\x04\x00\x00\x02\x04"
def AA_8(dul):
"""Association abort AA-8.
If receive invalid event, send A-ABORT, issue A-P-ABORT indication and
start ARTIM timer
State-event triggers: Evt3 + Sta3/6/7/8/9/10/11/12,
Evt4 + Sta3/5/6/7/8/9/10/11/12, Evt6 + Sta3/5/6/7/8/9/10/11/12,
Evt10 + Sta3/5/8/9/10/11/12, Evt12 + Sta3/5/8/9/10/11/12,
Evt13 + Sta3/5/6/8/9/12, Evt19 + Sta3/5/6/7/8/9/10/11/12
References
----------
1. DICOM Standard 2015b, PS3.8, Table 9-7, "Associate Establishment
Related Actions"
Parameters
----------
dul : pynetdicom.dul.DULServiceProvider
The DICOM Upper Layer Service instance for the local AE
Returns
-------
str
Sta13, the next state of the state machine
"""
# Send A-ABORT PDU (service-dul source), issue A-P-ABORT
# indication, and start ARTIM timer.
dul.pdu = A_ABORT_RQ()
dul.pdu.source = 0x02
dul.pdu.reason_diagnostic = 0x00
dul.primitive = dul.pdu.to_primitive()
dul.primitive.abort_source = 0x02
dul.primitive.result = 0x01
dul.primitive.diagnostic = 0x01
dul.socket.send(dul.pdu.encode())
evt.trigger(dul.assoc, evt.EVT_PDU_SENT, {'pdu': dul.pdu})
# Issue A-P-ABORT to user
primitive = A_P_ABORT()
primitive.provider_reason = 0x05
dul.to_user_queue.put(primitive)
dul.artim_timer.start()
return 'Sta13'
def test_assignment(self):
""" Check assignment works correctly """
primitive = A_P_ABORT()
primitive.provider_reason = 0
assert primitive.provider_reason == 0
primitive.provider_reason = 1
assert primitive.provider_reason == 1
primitive.provider_reason = 2
assert primitive.provider_reason == 2
primitive.provider_reason = 4
assert primitive.provider_reason == 4
primitive.provider_reason = 5
assert primitive.provider_reason == 5
primitive.provider_reason = 6
assert primitive.provider_reason == 6
def AA_8(dul: "DULServiceProvider") -> str:
"""Association abort AA-8.
If receive invalid event, send A-ABORT PDU, issue A-P-ABORT indication and
start ARTIM timer
State-event triggers: Evt3 + Sta3/6/7/8/9/10/11/12,
Evt4 + Sta3/5/6/7/8/9/10/11/12, Evt6 + Sta3/5/6/7/8/9/10/11/12,
Evt10 + Sta3/5/8/9/10/11/12, Evt12 + Sta3/5/8/9/10/11/12,
Evt13 + Sta3/5/6/8/9/12, Evt19 + Sta3/5/6/7/8/9/10/11/12
Parameters
----------
dul : dul.DULServiceProvider
The DICOM Upper Layer Service instance for the local AE
Returns
-------
str
``'Sta13'``, the next state of the state machine
"""
# Send A-ABORT PDU (service-dul source), issue A-P-ABORT
# indication, and start ARTIM timer.
# Send A-ABORT PDU
pdu = A_ABORT_RQ()
pdu.source = 0x02 # A-P-ABORT
pdu.reason_diagnostic = 0x00
sock = cast("AssociationSocket", dul.socket)
sock.send(pdu.encode())
evt.trigger(dul.assoc, evt.EVT_PDU_SENT, {'pdu': pdu})
# Issue A-P-ABORT to user
primitive = A_P_ABORT()
primitive.provider_reason = 0x05
dul.to_user_queue.put(primitive)
dul.artim_timer.start()
return 'Sta13'
def AA_4(dul):
"""Association abort AA-4.
If connection closed, issue A-P-ABORT and return to Idle
State-event triggers: Sta3/Sta4/Sta5/Sta6/Sta7/Sta8/Sta9/Sta10/Sta11/Sta12
+ Evt17
References
----------
1. DICOM Standard 2015b, PS3.8, Table 9-7, "Associate Establishment
Related Actions"
Parameters
----------
dul : pynetdicom.dul.DULServiceProvider
The DICOM Upper Layer Service instance for the local AE
Returns
-------
str
Sta1, the next state of the state machine
"""
assoc = dul.assoc
remote = assoc.acceptor if assoc.is_requestor else assoc.requestor
address = (remote.address, remote.port)
evt.trigger(dul.assoc, evt.EVT_CONN_CLOSE, {'address': address})
# Issue A-P-ABORT indication primitive.
primitive = A_P_ABORT()
primitive.provider_reason = 0x00
dul.to_user_queue.put(primitive)
dul.kill_dul()
return 'Sta1'