May 2014
Intermediate to advanced
164 pages
3h 27m
English
Content preview from Real-Time Communication with WebRTCBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 4. The Need for a Signaling Channel
As we anticipated in Chapter 3, a signaling channel is needed in a WebRTC-enabled application in order to allow for the exchanging of both session descriptions and network reachability information. Up until now, we have disregarded this specific aspect by sticking to a local perspective. This turned out to be useful, since it allowed us to just focus on the details of the WebRTC APIs, while leaving aside all networking-related aspects. The time is now ripe to also tackle these last issues. In this chapter, we will describe how we can create a proper signaling channel between any pair of peers that are interested in successfully setting up a WebRTC-enabled communication session.
The material presented in this chapter is only loosely related to the main topic of the book. More precisely, we will herein just focus on the creation of the above-mentioned signaling channel by describing the design and implementation of a very simple JavaScript application involving two clients and a server. The example itself should provide the reader with a set of tools that can be easily reused in a wide set of application scenarios. In the following chapter we will finally put all pieces together in order to complete the 10-step WebRTC recipe in a distributed setting.
Building Up a Simple Call Flow
As usual, we will continue to embrace the learn-by-example approach in order to let you figure out how to build a server-assisted signaling channel between two remote ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.