forked from mirrors/gecko-dev
101 lines
2.2 KiB
JavaScript
101 lines
2.2 KiB
JavaScript
'use strict';
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const session = require('express-session');
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const express = require('express');
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const http = require('http');
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const uuid = require('uuid');
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const { WebSocketServer } = require('../..');
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const app = express();
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const map = new Map();
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//
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// We need the same instance of the session parser in express and
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// WebSocket server.
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//
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const sessionParser = session({
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saveUninitialized: false,
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secret: '$eCuRiTy',
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resave: false
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});
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//
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// Serve static files from the 'public' folder.
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//
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app.use(express.static('public'));
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app.use(sessionParser);
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app.post('/login', function (req, res) {
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//
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// "Log in" user and set userId to session.
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//
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const id = uuid.v4();
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console.log(`Updating session for user ${id}`);
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req.session.userId = id;
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res.send({ result: 'OK', message: 'Session updated' });
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});
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app.delete('/logout', function (request, response) {
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const ws = map.get(request.session.userId);
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console.log('Destroying session');
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request.session.destroy(function () {
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if (ws) ws.close();
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response.send({ result: 'OK', message: 'Session destroyed' });
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});
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});
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//
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// Create an HTTP server.
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//
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const server = http.createServer(app);
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//
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// Create a WebSocket server completely detached from the HTTP server.
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//
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const wss = new WebSocketServer({ clientTracking: false, noServer: true });
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server.on('upgrade', function (request, socket, head) {
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console.log('Parsing session from request...');
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sessionParser(request, {}, () => {
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if (!request.session.userId) {
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socket.write('HTTP/1.1 401 Unauthorized\r\n\r\n');
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socket.destroy();
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return;
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}
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console.log('Session is parsed!');
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wss.handleUpgrade(request, socket, head, function (ws) {
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wss.emit('connection', ws, request);
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});
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});
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});
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wss.on('connection', function (ws, request) {
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const userId = request.session.userId;
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map.set(userId, ws);
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ws.on('message', function (message) {
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//
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// Here we can now use session parameters.
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//
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console.log(`Received message ${message} from user ${userId}`);
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});
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ws.on('close', function () {
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map.delete(userId);
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});
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});
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//
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// Start the server.
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//
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server.listen(8080, function () {
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console.log('Listening on http://localhost:8080');
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});
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