WebSocket is a communication protocol that enables full-duplex, bi-directional communication between a client and a server over a single, persistent connection built on top of TCP. Unlike the request-response model that defines regular HTTP traffic, where the client must always initiate every exchange and the server can only reply when asked, WebSocket keeps the connection open once it is established, so either side, the client or the server, can send data to the other at any moment, without wai...