randomly slow server - dev purpose only

slow.js

var http = require("http"),
    url = require("url"),
    path = require("path"),
    fs = require("fs")
    port = process.argv[2] || 8976,
    throttle = 2000; // ms

 
http.createServer(function(request, response) {

  var uri = url.parse(request.url).pathname, 
    filename = path.join(process.cwd(), uri);
  var time = Math.floor(Math.random()*throttle);
  
  fs.exists(filename, function(exists) {
    if(!exists) {
      setTimeout(function() {
        response.writeHead(404, {"Content-Type": "text/plain"});
        response.write("404 Not Found\n");
        response.end();
      }, time);
      
      return;
    }
 
    if (fs.statSync(filename).isDirectory()) filename += '/index.html';
 
    fs.readFile(filename, "binary", function(err, file) {
      if(err) {
        setTimeout(function() {
          response.writeHead(500, {"Content-Type": "text/plain"});
          response.write(err + "\n");
          response.end();
        }, time);
        return;
      }

      setTimeout(function() {
        response.writeHead(200);
        response.write(file, "binary");
        response.end();
      }, time);
    });
  });
}).listen(parseInt(port, 10));
 
console.log("Static file server running at\n  => http://localhost:" + port + "/\nCTRL + C to shutdown");