Ecommerce Shopify WordPress Discussion

Troubleshooting WordPress Plugin: Node.js, WebSockets, and WebRTC Integration on Live Server

I have developed a WordPress plugin that incorporates Node.js, WebSockets, and WebRTC for enabling voice and video calls between users. The plugin works seamlessly on my local WordPress setup. However, when I install the plugin on a live WordPress instance hosted on Cloudways and attempt to start the Node.js server using the command npm run start, the functionality breaks. ** Here are the key details: ** The Node.js server is set up to run on a specific port (e.g., 3000) for handling WebSockets and WebRTC communication. The WordPress installation on the live server is hosted on Cloudways. ** Here is the complete code Client side webrtc.js** `let localStream; let localVideo; let peerConnection; let remoteVideo; let serverConnection; let uuid; const peerConnectionConfig = { 'iceServers': [ {'urls': ''}, {'urls': ''}, ] }; async function pageReady() { uuid = createUUID(); localVideo = document.getElementById('localVideo'); remoteVideo = document.getElementById('remoteVideo'); serverConnection = new WebSocket(`wss://${window.location.hostname}:3000`); serverConnection.onmessage = gotMessageFromServer; const constraints = { video: true, audio: true, }; if(!navigator.mediaDevices.getUserMedia) { alert('Your browser does not support getUserMedia API'); return; } try { const stream = await navigator.mediaDevices.getUserMedia(constraints); localStream = stream; localVideo.srcObject = stream; } catch(error) { errorHandler(error); } } function start(isCaller) { peerConnection = new RTCPeerConnection(peerConnectionConfig); peerConnection.onicecandidate = gotIceCandidate; peerConnection.ontrack = gotRemoteStream; for(const track of localStream.getTracks()) { peerConnection.addTrack(track, localStream); } if(isCaller) { peerConnection.createOffer().then(createdDescription).catch(errorHandler); } } function gotMessageFromServer(message) { if(!peerConnection) start(false); const signal = JSON.parse(; // Ignore messages from ourself if(signal.uuid == uuid) return; if(signal.sdp) { peerConnection.setRemoteDescription(new RTCSessionDescription(signal.sdp)).then(() => { // Only create answers in response to offers if(signal.sdp.type !== 'offer') return; peerConnection.createAnswer().then(createdDescription).catch(errorHandler); }).catch(errorHandler); } else if( { peerConnection.addIceCandidate(new RTCIceCandidate(; } } function gotIceCandidate(event) { console.log(event.candidate , "--candidate"); if(event.candidate != null) { serverConnection.send(JSON.stringify({'ice': event.candidate, 'uuid': uuid})); } } function createdDescription(description) { console.log('got description'); peerConnection.setLocalDescription(description).then(() => { serverConnection.send(JSON.stringify({'sdp': peerConnection.localDescription, 'uuid': uuid})); }).catch(errorHandler); } function gotRemoteStream(event) { console.log('got remote stream'); remoteVideo.srcObject = event.streams[0]; } function errorHandler(error) { console.log(error); } // Taken from // Strictly speaking, it's not a real UUID, but it gets the job done here function createUUID() { function s4() { return Math.floor((1 + Math.random()) * 0x10000).toString(16).substring(1); } return `${s4() + s4()}-${s4()}-${s4()}-${s4()}-${s4() + s4() + s4()}`; } **Server.js file code** const HTTPS_PORT = 3000; const fs = require('fs'); const https = require('https'); const WebSocket = require('ws'); const WebSocketServer = WebSocket.Server; // Yes, TLS is required for WebRTC const serverConfig = { key: fs.readFileSync('key.pem'), cert: fs.readFileSync('cert.pem'), }; function main() { const httpsServer = startHttpsServer(serverConfig); startWebSocketServer(httpsServer); printHelp(); } function startHttpsServer(serverConfig) { const handleRequest = (request, response) => { console.log(`request received: ${request.url}`); // Check if the request URL matches '/webrtc/call/' if (request.url === '/webrtc/call/') { response.writeHead(200, {'Content-Type': 'text/html'}); response.end(fs.readFileSync('path/to/your/custom/page.html')); } else if (request.url === '/') { // Handle other requests as before response.writeHead(200, {'Content-Type': 'text/html'}); response.end(fs.readFileSync('client/index.html')); } else if (request.url === '/webrtc.js') { response.writeHead(200, {'Content-Type': 'application/javascript'}); response.end(fs.readFileSync('client/webrtc.js')); } }; const httpsServer = https.createServer(serverConfig, handleRequest); httpsServer.listen(HTTPS_PORT, ''); return httpsServer; } function startWebSocketServer(httpsServer) { // Create a server for handling websocket calls const wss = new WebSocketServer({server: httpsServer}); wss.on('connection', (ws) => { ws.on('message', (message) => { // Broadcast any received message to all clients console.log(`received: ${message}`); wss.broadcast(message); }); }); wss.broadcast = function(data) { this.clients.forEach((client) => { if(client.readyState === WebSocket.OPEN) { client.send(data, {binary: false}); } }); }; } function printHelp() { console.log(`Server running. Visit${HTTPS_PORT} in Firefox/Chrome/Safari.\n`); console.log('Please note the following:'); console.log(' * Note the HTTPS in the URL; there is no HTTP -> HTTPS redirect.'); console.log(' * You\'ll need to accept the invalid TLS certificate as it is self-signed.'); console.log(' * Some browsers or OSs may not allow the webcam to be used by multiple pages at once. You may need to use two different browsers or machines.'); } main();` Issues and Observations: The server starts without errors, but the communication between users doesn't work as expected. The plugin involves real-time communication, and it appears that the WebSocket connections might be encountering issues on the live server. when i hit the URL ( it Shows This site can’t be reached. ** Questions:** Are there any specific considerations for running a Node.js server alongside a WordPress installation on Cloudways? Could there be issues with WebSockets or WebRTC communication in a live server environment? Any insights on debugging real-time communication issues in a WordPress plugin on a live server? I would appreciate any guidance, suggestions, or troubleshooting steps to identify and resolve the issues with running my WordPress plugin on a live server. Thank you!
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