Peer to Peer Communication Library - repost

Need network layer library for facilitating decentralised peer-to-peer communication. - Peers should be able to discover one another (behind the NAT also) - NAT Traversal - TCP Hole Punching (preferred) / UDP Hole Punching - Peers should self-organize into peer groups. - Peers should advertise and discover network resources. - Peers should communicate with one another. - Peers should monitor one another. - The library or framework should not be require the use of any particular computer language or operating system...windows/linux/mac/android/iOS - The platform should not require the use of any particular network transport or topology. - The platform should not require the use of any particular authentication, security, or encryption model. deliverables: library/framework AND working sample application to demonstrate the working of library.