Chapter 1, An Introduction to Web-based Real-Time Communication, introduces you to the concepts behind the new Web-based Real-Time Communication (WebRTC) standards.

Chapter 2, A More Technical Introduction to Web-based Real-Time Communication, takes you to the technical concepts behind the new Web-based Real-Time Communication (WebRTC) standards.

Chapter 3, Creating a Real-time Video Call, shows you how to use the MediaStream and RTCPeerConnection APIs to create a working peer-to-peer video chat application between two people.

Chapter 4, Creating an Audio Only Call, teaches you how to turn the video chat application we developed in the previous chapter into an audio only call application.

Chapter 5, Adding Text-based Chat, explains how to extend the video chat application we developed in Chapter 2, A More Technical Introduction to Web-based Real-Time Communication, to add support for text-based chat between the two users.

Chapter 6, Adding File Sharing, deals with how to extend the video chat application we developed in Chapter 2, A More Technical Introduction to Web-based Real-Time Communication and Chapter 4, Creating an Audio Only Call, to add support for file sharing between the two users.

Chapter 7, Example Application 1 — Education and E-learning, maps out what is involved in introducing WebRTC into e-learning applications.

Chapter 8, Example Application 2 — Team Communication, shows what is involved in introducing WebRTC into team your communication applications.

All you need is:

Getting Started with WebRTC is written for web developers with moderate JavaScript experience who are interested in adding sensor driven real-time, peer-to-peer communication to their web applications.

In this book, you will find a number of styles of text that distinguish among different kinds of information. Here are some examples of these styles, and an explanation of their meaning:

Code words in text are shown as follows:

"We can include other contexts through the use of the include directive."

A block of code is set as follows:

var page = undefined;
fs.readFile("basic_video_call.html", function(error, data) {
  if (error) {
    log_error(error);
  } else {
    page = data;
  }
});

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

function setup_audio() {
  get_user_media(
    {
      "audio": true, // request access to local microphone
      "video": false  // don't request access to local camera
    },
    function (local_stream) { // success callback
      ...
    },
    log_error // error callback
  );
}

Any command-line input or output is written as follows:

#  node webrtc_signal_server.js

New terms and important words are shown in bold.

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