use wstunnel lib to create your own tunnel

const wsTunnelServer = require('./requires/wsServer');

run in a http server

const http = require('http');
const url = require('url');
const s = new wsTunnelServer({
	noServer: true,
	clientTracking: 0,
},
wspath || '/');
server.on('upgrade',function(request, socket, head) {
	const pathname = url.parse(request.url).pathname;
	pattern = 'http://dummy'.concat(wspath, '/*');
	if (match(pattern, 'http://dummy' + pathname)) {
		s.server.handleUpgrade(request, socket, head, function done(ws) {
                        //do your stuff here
			s.server.emit('connection', ws, request);
		});
	} else {
		socket.destroy();
	}
});

without http server

const s = new wsTunnelServer({
        port:port,
        clientTracking: 0,
    },