Couldn't get remote streams in any sample project-need help

[sree7200]

Do I need to use SSL to access Kurento and retrieve remote streams in a chat application with Node.js? The Kurento server is running on a different machine. I've noticed that the remote stream isn't working correctly in my locally created app (not cloned from the official Kurento documentation.i created seperate solution and used the same code). There are no error messages, and all functions are executing correctly. Can someone offer guidance or potential solutions for this issue? When testing on my local machine, do I need to use an SSL certificate? I believe the code is working fine and sending the SDP. I only want to test it locally, not in a production environment. Kurento is running remotely, so do I need SSL to get the remote stream? or what i missing? Thank you.

// //var ws = new WebSocket("wss://" + location.host + "/one2one");
const ws = new WebSocket("ws://localhost:3000/one2one");--- i used this in my script.js as my node js in 3000 port

in my server.js

var asUrl = url.parse(argv.as_uri);
var port = asUrl.port;
var server = http.createServer(app).listen(port, function () {
console.log("Kurento Tutorial started");
console.log("Open " + url.format(asUrl) + " with a WebRTC capable browser");
});