WebRTC applications using PeerJS
PeerJS is a client-side JavaScript library that provides an easy-to-use API to work with WebRTC. It only provides an API to exchange MediaStream and arbitrary data between peers. It doesn't provide an API to work with MediaStream.
PeerServer
PeerServer is an open source signaling server used by PeerJS to establish a peer-to-peer connection. PeerServer is written in Node.js. If you don't want to run your own PeerServer instance, then you can use PeerServer cloud, which hosts PeerServer for public use. PeerServer cloud allows you to establish a maximum of 50 concurrent connections for free.
A unique ID identifies every peer connected to PeerServer. PeerServer itself can generate the ID, or else the peers can provide their own ID. For a peer to establish a peer-to-peer connection with another peer, it just needs to know the other peer's ID.
You might want to run your own PeerServer instance when you want to add more functionality to PeerServer...
