simple websocket

return it to the client (from Wikipedia ). Websocket API After the handshake, the browser establishes a connection with the server, and the two can communicate with each other. Websocket APIs are really simple. Let's look at W3C definitions. The Code is as follows: Enum BinaryType {"blob", "arraybuffer "};[Constructor (DOMString url, optional (DOMString o

message to the browser? As the HTTP protocol can only be used by clients to initiate requests and the server establishes a connection to respond to requests, it is difficult for the server to actively push messages through the HTTP protocol, you can use the browser client to regularly send HTTP requests to the server. Comet is based on this method. In fact, this is not really a "server Initiative ". However, relying on WebSocket, we can easily achiev

implemented in Tomcat 7. The JSR356 WebSocket specification uses the javax. websocket. * API. A common Java object (POJO) can use the @ ServerEndpoint annotation as the WebSocket server endpoint. @ ServerEndpoint ("/push") public class EchoEndpoint {@ OnOpen public void onOpen (Session session) throws IOException {// the following code is omitted ...} @ OnMessag

Wikipedia ).Websocket API After the handshake, the browser establishes a connection with the server, and the two can communicate with each other. Websocket APIs are really simple. Let's look at W3C definitions.The Code is as follows:Enum BinaryType {"blob", "arraybuffer "};[Constructor (DOMString url, optional (DOMString or DOMString []) protocols)]Interface

JavaScript interface Definition: [Constructor (in Domstring URL, optional in Domst Ring protocol)] interface WebSocket { readonly attributes domstring URL; //Ready state Const unsigned Shor T connecting = 0; Const unsigned short OPEN = 1; Const unsigned short CLOSED = 2; ReadOnly attribute unsigned short readyState; ReadOnly attribute unsigned long bufferedamount; NBSP //Networking Attribute function OnOpen attribute function onmessage; A

　　4,OnMessage:Triggered when receiving messages sent by the server In addition,When a request is sent, the created WebSocket instance has a status value readyState: 　　1,0:Indicates that the connection is not established or is being connected; 　2,1:Indicates that the connection is successful; 　3,2:Indicates that the connection is being closed; 　　4,3:Indicates that the connection is closed. We add these four listening events to the demo. As follows: In

The WebSocket protocol is a two-way communication protocol that is based on TCP and transmits data over TCP as HTTP, but it differs from HTTP by a maximum of two points: 1. WebSocket is a two-way communication protocol, after establishing a connection, the WebSocket server and Browser/ua can actively send or receive data to each other, just like a socket, The dif

spring MVC annotation-based programming model.4, WebSocket support sub-protocolWebSocket is simply a messaging architecture that does not specify any specific messaging protocols. It is an ultra-thin layer on the TCP protocol that converts byte streams into message flows (text-to-cargo binary). The message is then interpreted by the application.Unlike the HTTP protocol, the WebSocket protocol is an applica

client and the server. On the development side, the WebSocket API is simple: simply instantiate the WebSocket, create the connection, and the server and the client can send and respond to each other. Detailed WebSocket API and code implementations can be found in the WebSocket