The problem is that NOX doesn't handle multiple threads in Python. The
solution is to just scrap the thread. NOX already has a reactor running, so
just set up your protocol and you should be good to go -- all you need is the
following in the install() method:
factory = Factory()
factory.protocol = QOTD
reactor.listenTCP(8007, factory)
-- Murphy
On Nov 21, 2010, at 11:57 PM, Derek Cormier wrote:
> Hello,
>
> I am trying to run a thread inside of a python NOX component using twisted
> that listens for TCP connections. I added code to pyswitch.py to see if I
> could get it working. However, I am getting this seg fault from NOX. It seems
> to be failing at 'reactor.listenTCP(8007, factory)'. Any ideas on what the
> problem might be?
>
> Added code:
>
> class ServerThread(Thread):
> def run(self):
> print "Thread started"
> factory = Factory()
> factory.protocol = QOTD
> reactor.listenTCP(8007, factory)
> reactor.run()
>
> class QOTD(LineReceiver):
> def connectionMade(self):
> self.transport.write("Vene, vidi, vici\n")
> self.transport.loseConnection()
>
> I added the following two lines at the end of pyswitch's install method:
>
> self.serverThread = ServerThread()
> self.serverThread.start()
>
> NOX Output:
>
> NOX 0.9.1~full~beta (nox_core), compiled Nov 11 2010 10:38:11
> Compiled with OpenFlow 0x01
> Thread started
> Caught signal 11.
> 0x7f47a8541262 64 (vigil::fault_handler(int)+0x42)
> 0x7f47a79d5af0
> 0x7f47a85a206b 64 (vigil::co_fsm_run(vigil::co_thread*)+0x4b)
> 0x7f47a4cddc83
> 0x7f47a4ce193c
> 0x7f47a4ce1f1a
> 0x7f47a6610313 18446604128078702928 (PyEval_EvalFrameEx+0x5483)
> 0x7f47a6969440 18446744073666775329 (PyFrame_Type+0x0)
> Segmentation fault
>
>
> Thanks,
> -Derek
>
> _______________________________________________
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