Establish P2P connection between two clients / peer

Avg Bid (USD)
Project Budget (USD)
$200 - $1500

Project Description:
I need to establish P2P connection between two clients where both clients may be behind router, just like yahoo, skype does.
Connection must be done using UDP and TCP( TCP over UDP).
Two stream should be open one for UDP and one for TCP (or TCP over UDP). Atleast one stream must be reliable.

Any technology will work as long as it is implemented in Java or C++ (Conditionally C#).
STUN, Holepunch, NAT traversal anything will work as long as you can establish direct connection between two peers.

You can use STUN server (simply any server) for handshaking purpose, such as login, passing each other IP addres etc.
I have the server with static IP address ready. If you want to test your demo application just let me know.

Budget varies between 200$ upto 1500$ depends on how much detail or reliable your connection.

You must have experience with P2P programming.
Please donot bid if you have no experience with P2P. Knowledge of TCP/UDP/Socket in not enough. I will NOT consider without previous experience.

You must tell me your experience with P2P before considering you for this project.

Thank you.

Additional Project Description:
06/12/2013 at 22:34 EDT
I will not award based on cheaper or faster. I will weight on people with right experience.

06/12/2013 at 22:46 EDT
[You should have clear understanding about the topic with very clear test plan]
[People with right knowledge can do it with couple of weeks, without right knowledge impossible to do it]

Skills required:
C++ Programming
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