how to handle NAT traversal in c++ peer to peer application ( please code examples not theory )

Question

Hello all i need to develop simple game that will be using peer to peer connection using centralize index manger server i know there is problem when client trying to connect other client behind router . i was reading about NAT traversal that explain mainly theory , but what i really like to see is code examples c++/java can you help me to understand the meaning of NAT traversal via code ? maybe some kind of open source simple client game ?

Answer 1

NAT traversal is not that simple to get right. STUN might help: http://en.wikipedia.org/wiki/STUN