p1-bmu
commented
2 years ago This is not supposed to happen... Do you have a special build of CPython for Windows ?
On the other side, I get a RecursionError when printing the decoded value on my side, meaning there is an issue somewhere in the ASN.1 runtime that is triggered by this RRC NR construct:
In [17]: ul_dcch.from_uper(bytes.fromhex('08580200'))
In [18]: print(ul_dcch.to_asn1())
---------------------------------------------------------------------------
RecursionError Traceback (most recent call last)
<ipython-input-18-96895abf0e02> in <module>
----> 1 print(ul_dcch.to_asn1())
~/python/pycrate_asn1rt/asnobj.py in to_asn1(self, val)
1265 self.set_val(val)
1266 if self._val is not None:
-> 1267 return self._to_asn1()
1268 else:
1269 return NoneIf I build the following value, I can safely retrieve the expected buffer:
In [68]: v = {'message': ('c1', ('rrcReconfigurationComplete', {'rrc-TransactionIdentifier': 0, 'criticalExtensions': ('rrcReconfigurationComplete', {'nonCriticalExtension': {'nonCriticalExtension': {'scg- Response': ('nr-SCG-Response', b'\x00')}}})}))}
In [69]: ul_dcch.set_val(v)
In [70]: ul_dcch.to_uper()
Out[70]: b'\x08X\x02\x00'It seems that the RRCReconfigurationComplete object from upper level is getting mixed with the nested one:
In [83]: ul_dcch.from_uper(bytes.fromhex('08580200'))
In [84]: ul_dcch._val
Out[84]:
{'message': ('c1',
('rrcReconfigurationComplete',
{'rrc-TransactionIdentifier': 0,
'criticalExtensions': ('rrcReconfigurationComplete',
{'nonCriticalExtension': {'nonCriticalExtension': {'scg-Response': ('nr-SCG-Response',
('RRCReconfigurationComplete',
{'rrc-TransactionIdentifier': 0,
'criticalExtensions': ('rrcReconfigurationComplete',
{...})}))}}})}))}
In [85]: ul_dcch._val['message'][1][1]['criticalExtensions'][1]['nonCriticalExtension']['nonCriticalExtension']['scg-Response'][1]
Out[85]:
('RRCReconfigurationComplete',
{'rrc-TransactionIdentifier': 0,
'criticalExtensions': ('rrcReconfigurationComplete',
{'nonCriticalExtension': {'nonCriticalExtension': {'scg-Response': ('nr-SCG-Response',
(...))}}})})I need to further investigate why exactly this recursion happens between those 2 RRCReconfigurationComplete objects during the PER decoding. On your side, it seems your CPython windows build is not that safe, eventually ensure what version you have installed.
dbressan2
Hi
I get a stack overflow with the following code:
message5 = "08 58 02 00".replace(" ", "") ul_dcch = RRCNR.NR_RRC_Definitions.UL_DCCH_Message ul_dcch.from_uper(bytes.fromhex(message5)) print (ul_dcch.to_asn1())
Windows fatal exception: stack overflow Main thread: Current thread 0x0000c070 (most recent call first): File "C:\Python310\lib\site-packages\pycrate_asn1rt\dictobj.py", line 83 in iter File "C:\Python310\lib\site-packages\pycrate_asn1rt\asnobj_construct.py", line 790 in _to_asn1 File "C:\Python310\lib\site-packages\pycrate_asn1rt\asnobj_construct.py", line 795 in _to_asn1 File "C:\Python310\lib\site-packages\pycrate_asn1rt\asnobj_construct.py", line 125 in _to_asn1 File "C:\Python310\lib\site-packages\pycrate_asn1rt\asnobj_construct.py", line 795 in _to_asn1 File "C:\Python310\lib\site-packages\pycrate_asn1rt\asnobj_str.py", line 1342 in _to_asn1
Python version: 3.10.4, Pycrate 0.5.4
This is supposed to decode as:
UL-DCCH-Message ::= { message: c1: rrcReconfigurationComplete: RRCReconfigurationComplete ::= { rrc-TransactionIdentifier: 0 criticalExtensions: rrcReconfigurationComplete: RRCReconfigurationComplete-IEs ::= { nonCriticalExtension: RRCReconfigurationComplete-v1530-IEs ::= { nonCriticalExtension: RRCReconfigurationComplete-v1560-IEs ::= { scg-Response: nr-SCG-Response: NR-RRCReconfigurationComplete ::= { rRCReconfigurationComplete: RRCReconfigurationComplete ::= { rrc-TransactionIdentifier: 0 criticalExtensions: rrcReconfigurationComplete: RRCReconfigurationComplete-IEs ::= { } } }
}
Thanks !