Websockets using unix domain sockets

client.js

var ws = require('ws');
var client = new ws("ws+unix:///tmp/server.sock")
client.send('hello')

server.js

var http = require('http');
var WebSocketServer = require('ws').Server;
var server = http.createServer()
var wss = new WebSocketServer({ server : server});
server.listen('/tmp/server.sock')

https://stackoverflow.com/questions/23930293/websockets-listening-on-unix-domain-socket