Python nonblocking sockets and reliable UDP

Question

For a graduate-level project, I'm being asked to create a reliable UDP implementation in Python. I have experience with socket programming in Python, but mostly TCP or "fire and forget"-type UDP stuff. I essentially have to create UDP with TCP congestion control. My main question is this:

How can I send packets and receive acknowledgments at the same time? I think the problem is the blocking socket.recv() call. How is this typically handled?

Any help with this or general advice on implementing reliable UDP would be very helpful!

score 1 · Answer 1 · answered Nov 07 '13 at 06:47

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http://twistedmatrix.com/trac/ is a perfect match for your needs, its not very easy for newcomers though.

This blog is a great resource to start from: http://krondo.com/?page_id=1327

answered Nov 07 '13 at 06:47

Guy Gavriely

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Thank you. I'll give this a look. Unfortunately, I can't use any external libraries, but it might give me some idea of how to handle my case. – user2963501 Nov 07 '13 at 06:51
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hmmm, in this case you better take a look at http://docs.python.org/2/howto/sockets.html#non-blocking-sockets old good select function – Guy Gavriely Nov 07 '13 at 06:54
I was actually just looking at that. Thanks! – user2963501 Nov 07 '13 at 06:55
one more link before I go... https://github.com/noiseoverip/python-rudp/tree/master/Rudp – Guy Gavriely Nov 07 '13 at 07:01

Python nonblocking sockets and reliable UDP

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