Introducing WebSocket

WebSocket is an application-layer protocol designed to facilitate bidirectional (either the client or server can send a message to the other party whenever a message is available) and full-duplex communication (both the client and server can send messages to each other simultaneously) between a web browser and WebSocket server in real time.

WebSocket is a binary protocol; therefore, it is faster than the HTTP protocol, which is a text-based protocol.

WebSocket has gained popularity and is already being used by many websites due to its real-time and full-duplex features. Due to overhead caused by comet techniques, it was not suitable for real-time bidirectional message transfer, and it was also not possible to establish a full-duplex communication system between a web browser and web server using comet. That is, comet techniques let us achieve only half-duplex communication system (only the client or server can send messages to the other party at a given time).

WebSocket...