ws-proxy.js

var caronte = require('caronte');
var ws = require('ws');

var proxy = caronte.createProxyServer({
  ws: true,
  target: 'http://localhost:9000'
});

var wss = new ws.Server({ port: 9000 })
wss.on('connection', function (ws) {
  ws.on('message', function (message) {
    console.log('Server Recieved message ' + message);
  });
  ws.send('something');
});

var proxyServ = proxy.listen(3000);

var WebSocket = new ws('ws://localhost:3000');
WebSocket.on('open', function () {
  WebSocket.send('client sent message');
});

WebSocket.on('message', function (message) {
  console.log('client recieved message' + message);
});