WebSocket是伴随HTML5发布的一种新协议。它实现了浏览器与服务器全双工通信,可以传输基于消息的文本和二进制数据。WebSocket是浏览器中最靠近套接字的API,除最初建立连接时需要借助于现有的HTTP协议,其他时候直接基于TCP完成通信。它是浏览器中较为通用、灵活的一个传输机制,其简易的API可以让人们在客户端 WebSocket is a new protocol released with HTML5. It enables full-duplex browser and server communication, which can transfer message-based text and binary data. WebSocket is the browser’s closest API to the socket, except when initially establishing a connection with the aid of the existing HTTP protocol and at other times completing communications directly over TCP. It is a more common and flexible transport mechanism in browsers, and its simple API allows people on the client