The WebSocket protocol (www.websocket.org) allows a two-way real-time conversation between the web server and client, through a standardized connection to allow both the server and the client to send data at any time. The client sends a request to the server to switch from an HTTP protocol to a WebSocket protocol; and if the server can host the WebSocket protocol, the HTTP connection is replaced with a WebSocket connection, but using the same port as HTTP.
An example of the WebSocket protocol is transmitting and receiving text in a conversation between the web server and the client (see ...
