Nodejs: CORS support in Node server.js

CORS.js

// please read before code any CORS:
// http://john.sh/blog/2011/6/30/cross-domain-ajax-expressjs-and-access-control-allow-origin.html
// http://stackoverflow.com/questions/7067966/how-to-allow-cors-in-express-nodejs
// 

setHeaders = function (req,res,next) {
	res.header("X-Powered-By","nodejs");

	// if ajax set access control
	if (req.xhr) 
		{ 
			res.header("Access-Control-Allow-Origin", req.header('origin')); 
			res.header("Access-Control-Allow-Headers", "X-Requested-With"); 
		} 
	next();
};

// then apply that function to all routes via 
app.use(setHeaders); 
// (usually within app.configure())





//*******************************************************************************//

app.all('/posts', function(req, res){
    res.header("Access-Control-Allow-Origin", "*");
    res.header("Access-Control-Allow-Headers", "X-Requested-With");
    res.send(
        { posts : '...' }
    );
});