Book Image

Socket.IO Cookbook

By : Tyson Cadenhead
Book Image

Socket.IO Cookbook

By: Tyson Cadenhead

Overview of this book

Socket.IO is a JavaScript library that provides you with the ability to implement real-time analytics, binary streaming, instant messaging, and document collaboration. It has two parts: a client-side library that runs in the browser, and a server-side library for node.js. Socket.IO is event-driven and primarily uses the WebSocket protocol that allows us to emit data bi-directionally from the server and the client. Socket.IO This book is a complete resource, covering topics from webSocket security to scaling the server-side of a Socket.IO application and everything in between. This book will provide real-world examples of how secure bi-directional, full-duplex connections that can be created using Socket.IO for different environments. It will also explain how the connection vulnerabilities can be resolved for large numbers of users and huge amounts of data/messages. By the end of the book, you will be a competent Socket.IO developer. With the help of the examples and real-world solutions,you will learn to create fast, scalable, and dynamic real-time apps by creating efficient messaging systems between the server side and the client side using Socket.IO.
Table of Contents (15 chapters)
Socket.IO Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Doing server-side pagination


When you have a large amount of data, it is often beneficial to present it in paged format so that you don't have to load all of it at once. In this recipe, we will create an app with several pages of data that will require server-side pagination.

Getting ready

For this recipe, we will use a library called Chance to generate a large set of random data. Chance is composed of various functions that allow us to get all sorts of random data to test with. So, it is ideal to mock up data before you have any. It can be installed by running npm install chance in your command line.

How to do it…

To do server-side pagination using Socket.IO, follow these steps:

  1. First, we will create our new Cordova app by running cordova create app com.server.paginationserverPagination.

  2. Next, we will add the iOS platform by running cordova platform add ios, and build it by running cordova build ios.

  3. Now, we will create our server.js file. We will generate around hundred random items when the...