I need to get the file type of a file with the help of node.js to set the content type. I know I can easily check the file extension but I've also got files without extension which should have the content type image/png, text/html aso.

This is my code (I know it doesn't make much sense but that's the base I need):

var http = require(http),

    fs = require(fs);

http.createServer(function(req, res) {

    var data = ;

    try {

        /*

         * Do not use this code!

         * It's not async and it has a security issue.

         * The code style is also bad.

         */

        data = fs.readFileSync(/home/path/to/folder + req.url);

        var type = ???; // how to get the file type??

        res.writeHead(200, {Content-Type: type});

    } catch(e) {

        data = 404 Not Found;

        res.writeHead(404, {Content-Type: text/plain});

    }

    res.write(data);

    res.end();

}).listen(7000);

I haven't found a function for that in the API so I would be happy if anyone can tell me how to do it.