Book Image

Node Cookbook

By : David Mark Clements
Book Image

Node Cookbook

By: David Mark Clements

Overview of this book

The principles of asynchronous event-driven programming are perfect for today's web, where efficient real-time applications and scalability are at the forefront. Server-side JavaScript has been here since the 90's but Node got it right. With a thriving community and interest from Internet giants, it could be the PHP of tomorrow. "Node Cookbook" shows you how to transfer your JavaScript skills to server side programming. With simple examples and supporting code, "Node Cookbook" talks you through various server side scenarios often saving you time, effort, and trouble by demonstrating best practices and showing you how to avoid security faux pas. Beginning with making your own web server, the practical recipes in this cookbook are designed to smoothly progress you to making full web applications, command line applications, and Node modules. Node Cookbook takes you through interfacing with various database backends such as MySQL, MongoDB and Redis, working with web sockets, and interfacing with network protocols, such as SMTP. Additionally, there are recipes on correctly performing heavy computations, security implementations, writing, your own Node modules and different ways to take your apps live.
Table of Contents (16 chapters)
Node Cookbook
About the Author
About the Reviewers

Communicating with TCP

The Transmission Control Protocol (TCP) provides the backbone of HTTP communications. With TCP, we can open up interfaces between processes running on separate server hosts and remotely communicate between processes with less overhead and fewer complexities than HTTP.

Node provides us with the net module for creating TCP interfaces. When it comes to scaling, reliability, load balancing, synchronization, or real-time social communications, TCP is a fundamental element.

In this recipe, we're going to demonstrate the sort of foundation needed to communicate between processes over a network by setting up a TCP connection that allows us to remotely monitor and filter HTTP headers of website hits in real time.

Getting ready

We'll need two new files: server.js and monitor.js. Let's place them in a new folder.

How to do it...

First, let's create our first TCP server in server.js as follows:

var net = require('net');
var fauxHttp = net.createServer(function(socket) {