testparser.js

var http = require('http'),
    fs = require('fs');

var data = fs.readFileSync('./sample_request.txt');

var parser = http.parsers.alloc();
parser.reinitialize(1);
console.log(parser);
parser.onIncoming = function (res) {
    console.log('onIncoming:', res);
    res.on('data', function (data) {
        console.log('data:', data.toString());
    });
};
parser.onMessageComplete = function () {
    console.log('onMessageComplete:', arguments);
};
var ret = parser.execute(data, 0, data.length);
console.log('EXECUTE:', ret);
parser.finish();