Simple static file server

fileserver.js

var http = require('http');
var url = require("url");
var path = require("path");
var fs = require('fs');

http.createServer(function(req, res) {
    var uri = url.parse(req.url).pathname;
    var filename = path.join(process.cwd(), uri);
	if (fs.existsSync(filename)) {
		var stats = fs.lstatSync(filename);
		if (stats && stats.isFile()) {
			try {
				console.log("Returning: " + uri);
				res.writeHead(200, {'Content-Type':'application/octet-stream','Content-Disposition': 'attachment'});
				var fileStream = fs.createReadStream(filename);
				fileStream.pipe(res);
				return;
			}
			catch (err) {
				res.writeHead(500, {'Content-Type': 'text/plain'});
				res.write('500 Error: \n' + err.toString());
				res.end();
				return;
			}
		}
    }
	
	console.log("not exists: " + filename);
	res.writeHead(404, {'Content-Type': 'text/plain'});
	res.write('404 Not Found\n');
	res.end();
}).listen(1234);