[Twisted-Python] thread + signal + reactor.stop problem

[Gabriel Rossetti]

Hello everyone,

I was able to write a small example that reproduces my problem, when I 
redefine signal and I have threads and I try to stop the reactor, it 
hangs. I wasn't sure if it was loopingCall or callLater or threads at 
first, but from my tests it's the threads that cause the problem. I 
attached the example, it's a modified version of the Twisted echo 
server/client example. Run the server, run the client, press Ctrl + C in 
the client's terminal (or Ctrl + break on windows) and it doesn't quit. 
I still have to test if it's caused by the signal redefinition at all or 
not.

Thank you,
Gabriel Rossetti
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