Book Image

Mastering Node.js

By : Sandro Pasquali
Book Image

Mastering Node.js

By: Sandro Pasquali

Overview of this book

Node.js is a modern development stack focused on providing an easy way to build scalable network software. Backed by a growing number of large companies and a rapidly increasing developer base, Node is revolutionizing the way that software is being built today. Powered by Google's V8 engine and built out of C++ modules, this is a JavaScript environment for the enterprise.Mastering Node.js will take the reader deep into this exciting development environment. Beginning with a comprehensive breakdown of its innovative non-blocking evented design, Node's structure is explained in detail, laying out how its blazingly fast I/O performance simplifies the creation of fast servers, scalable architectures, and responsive web applications.Mastering Node.js takes you through a concise yet thorough tour of Node's innovative evented non-blocking design, showing you how to build professional applications with the help of detailed examples.Learn how to integrate your applications with Facebook and Twitter, Amazon and Google, creating social apps and programs reaching thousands of collaborators on the cloud. See how the Express and Path frameworks make the creation of professional web applications painless. Set up one, two, or an entire server cluster with just a few lines of code, ready to scale as soon as you're ready to launch. Move data seamlessly between databases and file systems, between clients, and across network protocols, using a beautifully designed, consistent, and predictable set of tools.Mastering Node.js contains all of the examples and explanations you'll need to build applications in a short amount of time and at a low cost, running on a scale and speed that would have been nearly impossible just a few years ago.
Table of Contents (20 chapters)
Mastering Node.js
About the Author
About the Reviewers

The request object

HTTP request and response messages are similar, consisting of:

  • A status line, which for a request would resemble GET/index.html HTTP/1.1, and for a response would resemble HTTP/1.1 200 OK

  • Zero or more headers, which in a request might include Accept-Charset: UTF-8 or From: [email protected], and in responses might resemble Content-Type: text/html and Content-Length: 1024

  • A message body, which for a response might be an HTML page, and for a POST request might be some form data

We've seen how HTTP server interfaces in Node are expected to expose a request handler, and how this handler will be passed some form of a request and response object, each of which implement a readable or writable stream.

We will cover the handling of POST data and Header data in more depth later in this chapter. Before we do, let's go over how to parse out some of the more straightforward information contained in a request.

The URL module

Whenever a request is made to an HTTP server the request object will...