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Learning WebRTC

Learning WebRTC

By : Daniel M. Ristic
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Learning WebRTC

Learning WebRTC

4 (5)
By: Daniel M. Ristic
Buy this Book

Overview of this book

If you are a web developer who wants to create well designed WebRTC applications for your users, this is the book for you. Even if you are early in your web development career, this book aims to provide a complete understanding of the WebRTC API. It is assumed that you have previous exposure to web development using HTML5 and JavaScript technologies.
Table of Contents (11 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Getting Started with WebRTC
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1. Getting Started with WebRTC
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Audio and video communication today
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Enabling audio and video on the Web
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Creating web standards
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Using WebRTC in your browser
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Applications enabled by WebRTC
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Self-test questions
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Summary
2
2. Getting the User's Media
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2. Getting the User's Media
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Getting access to media devices
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Constraining the media stream
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Handling multiple devices
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Modifying the media stream
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Self-test questions
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Summary
3
3. Creating a Basic WebRTC Application
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3. Creating a Basic WebRTC Application
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Understanding UDP transport and real-time transfer
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The WebRTC API
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Building a basic WebRTC application
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Running your first WebRTC application
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Self-test questions
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Summary
4
4. Creating a Signaling Server
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4. Creating a Signaling Server
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Building a signaling server
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Setting up our environment
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Getting a connection
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Identifying users
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Initiating a call
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Answering a call
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Handling ICE candidates
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Hanging up a call
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Complete signaling server
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Signaling in the real world
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Self-test questions
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Summary
5
5. Connecting Clients Together
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5. Connecting Clients Together
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The client application
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Setting up the page
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Getting a connection
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Logging in to the application
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Initiating a call
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Hanging up a call
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A complete WebRTC client
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Improving the application
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Self-test questions
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Summary
6
6. Sending Data with WebRTC
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6. Sending Data with WebRTC
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Stream Control Transmission Protocol and data transportation
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The RTCDataChannel object
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Encryption and security
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Adding text-based chat
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Use cases
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Self-test questions
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Summary
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7. File Sharing
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7. File Sharing
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Getting a file with the File API
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Breaking down a file into chunks
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Putting it together on the other side
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Showing progress to the user
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Self-test questions
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Summary
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8. Advanced Security and Large-scale Optimization
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8. Advanced Security and Large-scale Optimization
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Securing the signaling server
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Supporting mobile devices
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Introduction to mesh networking
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Video conferencing with more users
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The future of conference calls
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Self-test questions
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Summary
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A. Answers to Self-test Questions
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A. Answers to Self-test Questions
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Chapter 1, Getting Started with WebRTC
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Chapter 2, Getting the User's Media
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Chapter 3, Creating a Basic WebRTC Application
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Chapter 4, Creating a Signaling Server
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Chapter 5, Connecting Clients Together
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Chapter 6, Sending Data with WebRTC
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Chapter 7, File Sharing
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Chapter 8, Advanced Security and Large-scale Optimization
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Index
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Index

Chapter 4. Creating a Signaling Server

At some point when creating a WebRTC application, you will have to break away from developing for a client and build a server. Most WebRTC applications are not solely dependent on just being able to communicate through audio and video and typically need many other features to be interesting. In this chapter, we are going to dive into server programming using JavaScript and Node.js. We are going to create the basis for a basic signaling server that we can utilize through the rest of the book.

In this chapter, we will cover the following topics:

  • Setting up our environment to develop in Node.js
  • Connecting to the client using WebSockets
  • Identifying users
  • Initiating and answering a WebRTC call
  • Handling ICE candidate transfers
  • Hanging up a call

Throughout this chapter, we are going to focus solely on the server part of the application. In the next chapter, we will build the client part of this example. Our example server will be bare bones in nature, giving...

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