title: ICE, STUN, TURN library for iOS iPhone
body: <p>I need to establish a P2P UDP and TCP Connection between two Users. Both of them are behind a NAT. A little research leads me to STUN, TURN and ICE.</p>
  
  <ol>
  <li><p>Is there any open source iOS (library) which support the same? </p></li>
  <li><p>FaceTime in iPhone also uses ICE, STUN, TURN to NAT traversal, so does iOS SDK exposes such API's?</p></li>
  <li><p>I found nICRr code in resiprocate source code (www.resiprocate.org), which I am able to test on Mac OS X for STUN part. Did anybody tried using the same for iOS 4.0or above?</p></li>
  </ol>
  
  <p>Thanks,
  rodney</p>