httpdispatcher - basic dispatcher for node.js

httpdispatcher is a simple class allows developer to have a clear dispatcher for dynamic pages and static resources. Classes http.ServerRequest and http.ServerResponse earns new params property containing a map of received HTTP parameters. Using httpdispatcher is pretty simple:

	var HttpDispatcher = require('../httpdispatcher');
	var http           = require('http');
	var dispatcher     = new HttpDispatcher();

	dispatcher.setStatic('/resources');
	dispatcher.setStaticDirname('static');

	dispatcher.onGet("/page1", function(req, res) {
		res.writeHead(200, {'Content-Type': 'text/plain'});
		res.end('Page One');
	}); 

	dispatcher.onPost("/page2", function(req, res) {
		res.writeHead(200, {'Content-Type': 'text/plain'});
		res.end('Page Two');
	});

	dispatcher.beforeFilter(/\//, function(req, res, chain) { //any url
		console.log("Before filter");
		chain.next(req, res, chain);
	});

	dispatcher.afterFilter(/\//, function(req, res, chain) { //any url
		console.log("After filter");
		chain.next(req, res, chain);
	});

	dispatcher.onError(function(req, res) {
		res.writeHead(404);
		res.end();
	});

	http.createServer(function (req, res) {
		dispatcher.dispatch(req, res);
	}).listen(1337, '127.0.0.1');
	
	
	/*
	GET  /page1  => 'Page One'
	POST /page2  => 'Page Two'
	GET  /page3  => 404
	GET  /resources/images-that-exists.png => Image resource
	GET  /resources/images-that-does-not-exists.png => 404
	*/