The Interactive Connectivity Establishment (ICE) protocol combines various NAT traversal utilities such as the STUN and TURN protocols in order to offer a powerful mechanism that allows Offer/Answer based protocols such as SIP and XMPP to traverse NATs.
This project provides a Java implementation of the ICE protocol that would be usable by both SIP and XMPP applications. The project also provides features such as socket sharing.
ice4j is maintained by the Jitsi community. Use Jitsi's community forum for questions and discussions.
The pseudo TCP implementation was moved it its own project.
Work on this project was graciously funded by the NLnet Foundation. Thank you!