busboy case 1: write file to disk

server1.js

var http = require('http');
var fs = require('fs');
var Busboy = require('busboy');

http.createServer(function(req, res) {

    var busboy = new Busboy({
        headers: req.headers
    });

    busboy.on('file', function(fieldname, file, filename, encoding, mimetype) {

        var saveTo = 'uploaded.txt';
        file.pipe(fs.createWriteStream(saveTo));

    });

    busboy.on('finish', function() {

        res.writeHead(200, {
            'Connection': 'close'
        });
        res.end("That's all folks!");

    });

    return req.pipe(busboy);

}).listen(8001, function() {
    console.log('server3 is listening for requests on 8001');
});