What are WebSockets?

The term “sockets” in computer science has been around for quite some time and it generally refers to a software interface that two processes (locally on the same machine or on different endpoints somewhere on the network) use to communicate with each other. Think of it like a door through which processes send and receive messages. Similarly, WebSockets have been created to add real-time communication between servers and clients in web applications. Does that mean that real-time communication didn’t exist before the WebSocket protocol? …