server.js

const http = require('http'),
    https = require('https'),
    fs = require('fs'),
    config = require('./config.json'),
    proxy = new (require('./lib/index'))(config.prefix, {
      localAddress: config.localAddresses ? config.localAddresses : false,
      blacklist: config.blockedHostnames ? config.blockedHostnames : false
    }),
    index_file = 'index.html',
    atob = str => new Buffer.from(str, 'base64').toString('utf-8'),
    app = (req, res) => {

      // HTTP(S) proxy.
      if (req.url.startsWith(config.prefix)) return proxy.http(req, res); 

      req.pathname = req.url.split('#')[0].split('?')[0];
      req.query = {};
      req.url.split('#')[0].split('?').slice(1).join('?').split('&').forEach(query => req.query[query.split('=')[0]] = query.split('=').slice(1).join('='));

      if (req.query.url && (req.pathname == '/prox' || req.pathname == '/prox/' || req.pathname == '/session' || req.pathname == '/session/')) {
        var url = atob(req.query.url);

        if (url.startsWith('https://') || url.startsWith('http://')) url = url;
        else if (url.startsWith('//')) url = 'http:' + url;
        else url = 'http://' + url;

        return (res.writeHead(301, { location: config.prefix + proxy.proxifyRequestURL(url) }), res.end(''));
      }


      // General file server.
      const publicPath = __dirname + '/public' + req.pathname;

      const error = () => (res.statusCode = 404, res.end(fs.readFileSync(__dirname + '/lib/error.html', 'utf-8').replace('%ERR%', `Cannot ${req.method} ${req.pathname}`)))

      fs.lstat(publicPath, (err, stats) => {

        if (err) return error();

        if (stats.isDirectory()) fs.existsSync(publicPath + index_file) ? fs.createReadStream(publicPath + index_file).pipe(res) : error();
        else if (stats.isFile()) !publicPath.endsWith('/') ? fs.createReadStream(publicPath).pipe(res) : error();
        else error();

      });

    },
    server = config.ssl ? https.createServer({key: fs.readFileSync('./ssl/default.key'), cert: fs.readFileSync('./ssl/default.crt')}, app) : http.createServer(app);

// Websocket proxy.
proxy.ws(server);

server.listen(process.env.PORT || config.port, () => console.log(`${config.ssl ? 'https://' : 'http://'}0.0.0.0:${config.port}`))