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[tor-bugs] #28961 [Core Tor/Stem]: exception in descriptor/remote.py downloading large server descriptors via orport
#28961: exception in descriptor/remote.py downloading large server descriptors via
orport
-----------------------+-------------------------------
Reporter: starlight | Owner: atagar
Type: defect | Status: new
Priority: Medium | Component: Core Tor/Stem
Version: | Severity: Normal
Keywords: | Actual Points:
Parent ID: | Points:
Reviewer: | Sponsor:
-----------------------+-------------------------------
`download_descriptor.py` works ok when descriptors are short:
{{{
bash-4.1$ python3 download_descriptor.py --orport 45.59.127.53:443 -f
A0ECF41498288C3BFA33005B7C92BC791B06AB77
Downloading server descriptor from 45.59.127.53:443...
router erosi 45.59.127.53 443 0 80
identity-ed25519
-----BEGIN ED25519 CERT-----
AQQABo/EAV5E1oAtsNKuEr2iE+FhLa5WSYx+pK1VVAUrFANbbu6yAQAgBABnngvA
.
.
.
}}}
not so when they are long:
{{{
bash-4.1$ python3 download_descriptor.py --orport 199.249.230.82:443 -f
A0DB820FEC87C0405F7BF05DEE5E4ADED2BB9904
Downloading server descriptor from 199.249.230.82:443...
Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/stem/descriptor/remote.py",
line 560, in _download_descriptors
self.content, self.reply_headers = _download_from_orport(endpoint,
self.compression, self.resource)
File "/usr/local/lib/python3.7/site-packages/stem/descriptor/remote.py",
line 969, in _download_from_orport
response = b''.join([cell.data for cell in
circ.send(RelayCommand.DATA, request, stream_id = 1)])
File "/usr/local/lib/python3.7/site-packages/stem/client/__init__.py",
line 262, in send
raise stem.ProtocolError('Circuit response should be a series of RELAY
cells, but received an unexpected size for a response: %i' % len(reply))
stem.ProtocolError: Circuit response should be a series of RELAY cells,
but received an unexpected size for a response: 4048
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/stem/descriptor/remote.py",
line 560, in _download_descriptors
self.content, self.reply_headers = _download_from_orport(endpoint,
self.compression, self.resource)
File "/usr/local/lib/python3.7/site-packages/stem/descriptor/remote.py",
line 969, in _download_from_orport
response = b''.join([cell.data for cell in
circ.send(RelayCommand.DATA, request, stream_id = 1)])
File "/usr/local/lib/python3.7/site-packages/stem/client/__init__.py",
line 262, in send
raise stem.ProtocolError('Circuit response should be a series of RELAY
cells, but received an unexpected size for a response: %i' % len(reply))
stem.ProtocolError: Circuit response should be a series of RELAY cells,
but received an unexpected size for a response: 4048
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "download_descriptor.py", line 133, in <module>
main()
File "download_descriptor.py", line 115, in main
endpoints = [args.download_from],
File "/usr/local/lib/python3.7/site-packages/stem/descriptor/remote.py",
line 484, in run
return list(self._run(suppress))
File "/usr/local/lib/python3.7/site-packages/stem/descriptor/remote.py",
line 495, in _run
raise self.error
File "/usr/local/lib/python3.7/site-packages/stem/descriptor/remote.py",
line 560, in _download_descriptors
self.content, self.reply_headers = _download_from_orport(endpoint,
self.compression, self.resource)
File "/usr/local/lib/python3.7/site-packages/stem/descriptor/remote.py",
line 969, in _download_from_orport
response = b''.join([cell.data for cell in
circ.send(RelayCommand.DATA, request, stream_id = 1)])
File "/usr/local/lib/python3.7/site-packages/stem/client/__init__.py",
line 262, in send
raise stem.ProtocolError('Circuit response should be a series of RELAY
cells, but received an unexpected size for a response: %i' % len(reply))
stem.ProtocolError: Circuit response should be a series of RELAY cells,
but received an unexpected size for a response: 4048
]}}
unencrypted no problem:
{{{
bash-4.1$ python3 download_descriptor.py --dirport 199.249.230.82:80 -f
A0DB820FEC87C0405F7BF05DEE5E4ADED2BB9904
Downloading server descriptor from 199.249.230.82:80...
router QuintexAirVPN29 199.249.230.82 443 0 80
identity-ed25519
-----BEGIN ED25519 CERT-----
AQQABo5iATaZrxEunmfnvKy6Y+5N5M7B7+8ofuFMdtlmcBDX+/QFAQAgBAAmRN42
.
.
.
}}}
versions:
libffi-3.2.1
Python-3.7.1
python-cryptography-2.4.2
openssl-1.0.2
stem-20181216-git0EB8FDA3
https://stem.torproject.org/tutorials/examples/download_descriptor.html as
of date ticket opened
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/28961>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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