use connect to parse upload...

connect

var http = require('http'),
    connect = require('connect'),
    fs = require('fs'),
    util = require('util'),
    port = process.env.PORT || 8000,
    form = fs.readFileSync('./form.html');

var app = connect();

app.use(function (req, res, next) {
    if (req.method === 'GET') {
        res.writeHead(200, {'Content-Type': 'text/html'});
        res.end(form);
        return;
    }
    
    next();
});

var getRawBody = require('raw-body');
app.use(function (req, res, next) {
    getRawBody(req, {
        length: req.headers['content-length'],
        limit: '1mb',
        encoding: 'utf8'
    }, function (err, string) {
        if (err)
          return next(err);
        
        req.text = string;
        next();
    });
});

app.use(function (req, res) {
    // you can output here
    console.log(req.text);
    res.end('beep boop\n');
});

http.createServer(app).listen(port);