WebSocket is a computer communications protocol, providing a bidirectional communication channel over a single Transmission Control Protocol connection. The WebSocket protocol was standardized by the IETF as RFC 6455 in 2011. The current specification allowing web applications to use this protocol is known as WebSockets. It is a living standard maintained by the WHATWG and a successor to The WebSocket API from the W3C.
WebSocket is distinct from HTTP used to serve most webpages. From Wikipedia
