Once your WebRTC application is working on multiple devices with a reasonable amount of security, the next question is: how do I scale this up to multiple users? One-to-one calls are great, but what if we can connect several users together inside one call? This is where we begin to dive into the world of mesh networking.

Mesh networking is a topic that has been around for a while. It's a term used in almost any technology that deals in the networking of multiple computers. In its most basic sense, a mesh network represents a set of computers that can all communicate with each other directly. Each node is connected with every other node in the network and no one node is responsible for the entire network:

There is a good chance that you have encountered many mesh networks in your lifetime. For example, the Internet is already a form of mesh network. So, when you send out a request for a certain web page, every node on the network works together to deliver that...