WebSockets - technology for creating real-time web applications

This work deals with the description of the technology HTML5 WebSockets that allows to communicate in real-time between a server and a web application. The theoretical part of this work describes the importance of this technology and compares it with earlier approaches for real-time communication within web applications including the benefits and possible negatives. This work includes a view on current versions of two WebSockets specifications. It means both WebSocket Protocol that enables two-way communication between a server and a client and WebSocket API that creates a tool for creating event-driven web applications written in JavaScript. This work also includes a description of the current web browsers support of WebSockets. Practical part of the work can be used as a guide for running the WebSocket server at home and developing the chat web application that communicate in real-time using the WebSockets