[tor-bugs] #11769 [Obfsproxy]: Unexpected `NoneType` in obfs3
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Thu May 8 14:15:49 UTC 2014
#11769: Unexpected `NoneType` in obfs3
---------------------------+-----------------
Reporter: asn | Owner: asn
Type: defect | Status: new
Priority: normal | Milestone:
Component: Obfsproxy | Version:
Resolution: | Keywords:
Actual Points: | Parent ID:
Points: |
---------------------------+-----------------
Description changed by asn:
Old description:
> Since my obfs3 bridge has gotten more popular, I decided to enable
> logging and I noticed that I've been getting these errors:
>
> {{{
> 2014-05-06 15:49:51,869 [ERROR] Unhandled error in Deferred:
> 2014-05-06 15:49:51,870 [ERROR] Unhandled Error
> Traceback (most recent call last):
> File "/usr/local/lib/python2.7/dist-packages/Twisted-13.2.0-py2.7
> -linux-x86_64.egg/twisted/internet/base.py", line 1201, in mainLoop
> self.runUntilCurrent()
> File "/usr/local/lib/python2.7/dist-packages/Twisted-13.2.0-py2.7
> -linux-x86_64.egg/twisted/internet/base.py", line 797, in runUntilCurrent
> f(*a, **kw)
> File "/usr/local/lib/python2.7/dist-packages/Twisted-13.2.0-py2.7
> -linux-x86_64.egg/twisted/internet/defer.py", line 382, in callback
> self._startRunCallbacks(result)
> File "/usr/local/lib/python2.7/dist-packages/Twisted-13.2.0-py2.7
> -linux-x86_64.egg/twisted/internet/defer.py", line 490, in
> _startRunCallbacks
> self._runCallbacks()
> --- <exception caught here> ---
> File "/usr/local/lib/python2.7/dist-packages/Twisted-13.2.0-py2.7
> -linux-x86_64.egg/twisted/internet/defer.py", line 577, in _runCallbacks
> current.result = callback(current.result, *args, **kw)
> File "/usr/local/lib/python2.7/dist-
> packages/obfsproxy-0.2.9_1_g4c41868-py2.7.egg/obfsproxy/transports/obfs3.py",
> line 154, in _uniform_dh_errback
> self.circuit.close()
> exceptions.AttributeError: 'NoneType' object has no attribute 'close'
> }}}
> {{{
> 2014-05-06 14:47:51,643 [ERROR] Unhandled Error
> Traceback (most recent call last):
> File "/usr/local/lib/python2.7/dist-packages/Twisted-13.2.0-py2.7
> -linux-x86_64.egg/twisted/python/log.py", line 88, in callWithLogger
> return callWithContext({"system": lp}, func, *args, **kw)
> File "/usr/local/lib/python2.7/dist-packages/Twisted-13.2.0-py2.7
> -linux-x86_64.egg/twisted/python/log.py", line 73, in callWithContext
> return context.call({ILogContext: newCtx}, func, *args, **kw)
> File "/usr/local/lib/python2.7/dist-packages/Twisted-13.2.0-py2.7
> -linux-x86_64.egg/twisted/python/context.py", line 118, in
> callWithContext
> return self.currentContext().callWithContext(ctx, func, *args, **kw)
> File "/usr/local/lib/python2.7/dist-packages/Twisted-13.2.0-py2.7
> -linux-x86_64.egg/twisted/python/context.py", line 81, in callWithContext
> return func(*args,**kw)
> --- <exception caught here> ---
> File "/usr/local/lib/python2.7/dist-packages/Twisted-13.2.0-py2.7
> -linux-x86_64.egg/twisted/internet/posixbase.py", line 614, in
> _doReadOrWrite
> why = selectable.doRead()
> File "/usr/local/lib/python2.7/dist-packages/Twisted-13.2.0-py2.7
> -linux-x86_64.egg/twisted/internet/tcp.py", line 215, in doRead
> return self._dataReceived(data)
> File "/usr/local/lib/python2.7/dist-packages/Twisted-13.2.0-py2.7
> -linux-x86_64.egg/twisted/internet/tcp.py", line 221, in _dataReceived
> rval = self.protocol.dataReceived(data)
> File "/usr/local/lib/python2.7/dist-
> packages/obfsproxy-0.2.9_1_g4c41868-py2.7.egg/obfsproxy/network/extended_orport.py",
> line 189, in dataReceived
> self.circuit.dataReceived(self.buffer, self)
> File "/usr/local/lib/python2.7/dist-
> packages/obfsproxy-0.2.9_1_g4c41868-py2.7.egg/obfsproxy/network/network.py",
> line 157, in dataReceived
> self.transport.receivedUpstream(data)
> File "/usr/local/lib/python2.7/dist-
> packages/obfsproxy-0.2.9_1_g4c41868-py2.7.egg/obfsproxy/transports/obfs3.py",
> line 102, in receivedUpstream
> self.circuit.downstream.write(message)
> exceptions.AttributeError: 'NoneType' object has no attribute
> 'downstream'
> }}}
>
> I get around 2-3 of them per day which means that it's not a very usual
> bug.
New description:
Since my obfs3 bridge has gotten more popular, I decided to enable logging
and I noticed that I've been getting these errors:
{{{
2014-05-06 14:47:51,643 [ERROR] Unhandled Error
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/Twisted-13.2.0-py2.7-linux-
x86_64.egg/twisted/python/log.py", line 88, in callWithLogger
return callWithContext({"system": lp}, func, *args, **kw)
File "/usr/local/lib/python2.7/dist-packages/Twisted-13.2.0-py2.7-linux-
x86_64.egg/twisted/python/log.py", line 73, in callWithContext
return context.call({ILogContext: newCtx}, func, *args, **kw)
File "/usr/local/lib/python2.7/dist-packages/Twisted-13.2.0-py2.7-linux-
x86_64.egg/twisted/python/context.py", line 118, in callWithContext
return self.currentContext().callWithContext(ctx, func, *args, **kw)
File "/usr/local/lib/python2.7/dist-packages/Twisted-13.2.0-py2.7-linux-
x86_64.egg/twisted/python/context.py", line 81, in callWithContext
return func(*args,**kw)
--- <exception caught here> ---
File "/usr/local/lib/python2.7/dist-packages/Twisted-13.2.0-py2.7-linux-
x86_64.egg/twisted/internet/posixbase.py", line 614, in _doReadOrWrite
why = selectable.doRead()
File "/usr/local/lib/python2.7/dist-packages/Twisted-13.2.0-py2.7-linux-
x86_64.egg/twisted/internet/tcp.py", line 215, in doRead
return self._dataReceived(data)
File "/usr/local/lib/python2.7/dist-packages/Twisted-13.2.0-py2.7-linux-
x86_64.egg/twisted/internet/tcp.py", line 221, in _dataReceived
rval = self.protocol.dataReceived(data)
File "/usr/local/lib/python2.7/dist-
packages/obfsproxy-0.2.9_1_g4c41868-py2.7.egg/obfsproxy/network/extended_orport.py",
line 189, in dataReceived
self.circuit.dataReceived(self.buffer, self)
File "/usr/local/lib/python2.7/dist-
packages/obfsproxy-0.2.9_1_g4c41868-py2.7.egg/obfsproxy/network/network.py",
line 157, in dataReceived
self.transport.receivedUpstream(data)
File "/usr/local/lib/python2.7/dist-
packages/obfsproxy-0.2.9_1_g4c41868-py2.7.egg/obfsproxy/transports/obfs3.py",
line 102, in receivedUpstream
self.circuit.downstream.write(message)
exceptions.AttributeError: 'NoneType' object has no attribute 'downstream'
}}}
I get around 2-3 of them per day which means that it's not a very usual
bug.
--
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/11769#comment:2>
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