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 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 test_conversion(self):
""" Check conversion to a PDU produces the correct output """
primitive = A_ABORT()
primitive.abort_source = 0
pdu = A_ABORT_RQ()
pdu.from_primitive(primitive)
data = pdu.encode()
assert data == b"\x07\x00\x00\x00\x00\x04\x00\x00\x00\x00"
def AA_1(dul: "DULServiceProvider") -> str:
"""Association abort AA-1.
If on sending A-ASSOCIATE-RQ we receive an invalid reply, or an abort
request then abort
State-event triggers: Sta2 + Evt3/Evt4/Evt10/Evt12/Evt13/Evt19,
Sta3/Sta5/Sta6/Sta7/Sta8/Sta9/Sta10/Sta11/Sta12 + Evt15
Parameters
----------
dul : dul.DULServiceProvider
The DICOM Upper Layer Service instance for the local AE
Returns
-------
str
``'Sta13'``, the next state of the state machine
"""
# Received invalid PDU from peer or an A-ABORT primitive from local user
try:
primitive = dul.to_provider_queue.queue[0]
if isinstance(primitive, (A_ABORT, A_P_ABORT)):
primitive = dul.to_provider_queue.get(False)
except (queue.Empty, IndexError):
primitive = None
# Send A-ABORT PDU (service-user source) and start (or restart
# if already started) ARTIM timer.
pdu = A_ABORT_RQ()
if primitive is not None:
pdu.from_primitive(primitive)
else:
# Reason not specified
pdu.source = 0x00
pdu.reason_diagnostic = 0x00
dul._send(pdu)
dul.artim_timer.restart()
return "Sta13"
