Mimetype server

/**
 * Module dependencies.
 */
var express = require('express');
var request = require('request');
var mimetype = require('mime');

/**
 * Express server.
 */
var app = express();

/**
 * Express routes.
 */
app.get('/', function(req, res){
        var file = req.query.url;
        if (!file) {
                res.writeHead(200, {'Content-Type': 'text/plain'});
                res.end();
        }
        else {
                var filename = file.substring(0, file.indexOf('?'));
                filename = filename.substring(filename.lastIndexOf('/') + 1);

                var type =mimetype.lookup(filename);
                var charset = mimetype.charsets.lookup(type);

                console.log(type + (charset ? '; charset=' + charset : ''));

                res.setHeader('Content-Type', type + (charset ? '; charset=' + charset : ''));
                request.get(file).pipe(res);
        }
});

/**
 * Start server.
 */
app.listen(8889, function() {
  console.log("Express server listening on port %d in %s mode", app.settings.port || 8889, app.settings.env);
});