websockets

WebSockets are an alternative to HTTP communication in Web Applications.

WebSocket是Web应用程序中HTTP通信的替代方法。

They offer a long lived, bidirectional communication channel between client and server.

它们在客户端和服务器之间提供了长期的双向通信通道。

Once established, the channel is kept open, offering a very fast connection with low latency and overhead.

建立通道后，通道将保持打开状态，从而提供非常快速的连接，并具有较低的延迟和开销。

浏览器对WebSocket的支持 (Browser support for WebSockets)

WebSockets are supported by all modern browsers.

所有现代浏览器都支持WebSocket。

WebSockets与HTTP有何不同 (How WebSockets differ from HTTP)

HTTP is a very different protocol, and also a different way of communicate.

HTTP是一个非常不同的协议，也是一种不同的通信方式。

HTTP is a request/response protocol: the server returns some data when the client requests it.

HTTP是一个请求/响应协议：服务器在客户端请求时返回一些数据。

With WebSockets:

使用WebSockets：

• the server can send a message to the client without the client explicitly requesting something

  服务器可以向客户端发送消息，而无需客户端明确请求

• the client and the server can talk to each other simultaneously

  客户端和服务器可以同时对话

• very little data overhead needs to be exchanged to send messages. This means a low latency communication.

  发送消息所需的数据开销很少 。 这意味着低延迟的通信 。

WebSockets are great for real-time and long-lived communications.

WebSockets非常适合