node-p2-chord is a light-weight Chord protocol implementation for a peer-to-peer distributed hash table over WebSocket. It's 100% in Node.js.

This project aims to help building the P2P IoT networks in more simplicity way.

Usage

To start a virtual node.

$ export HOST=192.168.0.3	; the IP address for this Chord node to listening to
$ export PORT=8000			; the port number for this Chord node to listening to
$ node node0.js				; start the the virtual node

To join a existing node.

$ export HOST=192.168.0.100	; the IP address for this Chord node to listening to
$ export PORT=9000			; the port number for this Chord node to listening to
$ node node1.js				; start a Chord node and join the existing node

In node1.js, you must add join to join a node.

// to connect to a subsequent node
server.start({
	onmessage: onmessage,
	join: { 
		address: '192.168.0.3', 
		port: 8000
	}	
});

Quickstart

To create a node and connect to a subsequent node. Add join as the existing server to connect to.

var server = require('./libs/server');

/**
 * Chord network.
 */
var onmessage = function(payload) {
};

/**
 * Join an existing node.
 */
server.start({
	onmessage: onmessage,
	join: { 
		address: '127.0.0.1', 
		port: 8001
	}	
});

To create a new virtual node.

var server = require('./libs/server');

/**
 * Chord network.
 */
var onmessage = function(payload) {
};

/**
 * Create a virtual node (seed node).
 */
server.start({
	onmessage: onmessage,
});

History

v0.3: 2016.08.27

• Support refreshing finger table entries
• Support verifying successor's consistency

v0.2: 2016.08.26

• Support create and join
• Support stabilize and notify

v0.1: 2016.08.25

• Chord node prototype
• Chord node over WebSocket server

Credits

There are existing Node.js Chord implementations. And node-p2p-chord is inspired by them.

• shigasumi/chord-node-js
• optimizely/chord
• tsujio/webrtc-chord

License

The MIT License (MIT)