How do I write code to get through NAT in a similar way to Skype?

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+2 Q:

How do I write code to get through NAT in a similar way to Skype?

Does anyone knows, how skype redirect NAT and FireWalls?

+5 A:

I believe Skype uses a variant of the STUN protocol to traverse NAT.

You can find example C# code to implement a STUN client here.

snowcrash09 2009-04-24 10:20:30

Thanks, are there any examples how to use that lib?

Ockonal 2009-04-24 10:24:20

Depends what language you want - I've added a link to a C# example.

snowcrash09 2009-04-24 10:39:55

BTW why not re-tag with "protocols" rather than "Skype", or you might get accused of asking non-programming questions ;-)

snowcrash09 2009-04-24 10:44:20

Programming language is Python. Maybe, you have an example for it? =).

Ockonal 2009-04-24 11:00:55

Here is http://code.google.com/p/pystun/ implement of STUN for Python.

Ockonal 2009-04-24 13:29:21

are there any C# implementation of STUN server?

Ramesh Soni 2009-11-11 10:31:11

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How do I write code to get through NAT in a similar way to Skype?

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