This is an implementation of Kademlia/Mainline DHT Wikipedia Kademlia Link and Wikipedia Mainline Link this implementation was refrenced from Stanford Paper

A DHT (Distributed Hash Table) is a distributed network that uses an XOR based routing system based off of user defined UIDs. UIDs are made using CRC32c hash of the users IP address and a random number. The random number allows multiple nodes on 1 NAT, while also limiting any person up to 100 nodes per NAT to stop 50% attacks.

• PING
• FIND_NODE
• GET
• PUT
• Same protocol as BitTorrent (Easy Torrent Implementation)
• No external Libraries
• Option for MainLine or Kademlia
• Teredo support
• Consensus IP defining
• Bogon detecting
• Spam Throttling
• Secure ID only option

To join a node you can do

Kademlia k = new Kademlia();
k.join(6881, InetAddress.getByName("HOSENAME"), 6881);

To start a node without joining you can do

Kademlia k = new Kademlia();
k.bind(6881);

To set Kademlia to Mainline you can do:

Kademlia k = new Kademlia("MainLine");

Java > 8