70 lines
2.2 KiB
JavaScript
70 lines
2.2 KiB
JavaScript
const HTTPS_PORT = 8443;
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const fs = require('fs');
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const https = require('https');
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const WebSocket = require('ws');
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const WebSocketServer = WebSocket.Server;
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// Yes, TLS is required for WebRTC
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const serverConfig = {
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key: fs.readFileSync('key.pem'),
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cert: fs.readFileSync('cert.pem'),
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};
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function main() {
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const httpsServer = startHttpsServer(serverConfig);
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startWebSocketServer(httpsServer);
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printHelp();
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}
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function startHttpsServer(serverConfig) {
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// Handle incoming requests from the client
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const handleRequest = (request, response) => {
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console.log(`request received: ${request.url}`);
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// This server only serves two files: The HTML page and the client JS file
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if(request.url === '/') {
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response.writeHead(200, {'Content-Type': 'text/html'});
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response.end(fs.readFileSync('client/index.html'));
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} else if(request.url === '/webrtc.js') {
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response.writeHead(200, {'Content-Type': 'application/javascript'});
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response.end(fs.readFileSync('client/webrtc.js'));
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}
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};
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const httpsServer = https.createServer(serverConfig, handleRequest);
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httpsServer.listen(HTTPS_PORT, '0.0.0.0');
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return httpsServer;
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}
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function startWebSocketServer(httpsServer) {
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// Create a server for handling websocket calls
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const wss = new WebSocketServer({server: httpsServer});
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wss.on('connection', (ws) => {
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ws.on('message', (message) => {
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// Broadcast any received message to all clients
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console.log(`received: ${message}`);
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wss.broadcast(message);
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});
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});
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wss.broadcast = function(data) {
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this.clients.forEach((client) => {
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if(client.readyState === WebSocket.OPEN) {
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client.send(data, {binary: false});
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}
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});
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};
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}
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function printHelp() {
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console.log(`Server running. Visit https://localhost:${HTTPS_PORT} in Firefox/Chrome/Safari.\n`);
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console.log('Please note the following:');
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console.log(' * Note the HTTPS in the URL; there is no HTTP -> HTTPS redirect.');
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console.log(' * You\'ll need to accept the invalid TLS certificate as it is self-signed.');
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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.');
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}
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main();
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