websocket example

TCP/IP, WebSocket and MQTT According to the OSI network layering model, IP is the Network layer protocol, TCP is the Transport Layer protocol, and HTTP and Mqtt are the application layer protocols. Between the three, TCP is the protocol for HTTP and Mqtt at the bottom. Everyone is familiar with HTTP, here is a brief introduction to MQTT. The MQTT (message Queuing Telemetry Transport, Messaging queue telemetry transmission) is an Instant Messaging pro

The WebSocket protocol belongs to the HTML5 standard, and more and more browsers already natively support WebSocket, which enables two-way communication between client and server. After establishing a WebSocket connection on the client and server side, server-side messages can be sent directly to the client, thus breaking the traditional request-response mode and

check the connection state, and a function send () sends data to the server.　　Below we will complete a complete browser using WebSocket example, here need to service side also support WebSocket protocol　　　　　　DOCTYPE html>Htmlxmlns= "Http://www.w3.org/1999/xhtml">Head>MetaHttp-equiv= "Content-type"Content= "text/html; Charset=utf-8 "/>Title>

(" Disconnected "); } function OnMessage (evt) { console.log (' Retrieved data from server: ' + evt.data)} function OnError (evt) { cons Ole.log (' Error occured: ' + evt.data); }An example of a typical WebSocket initiating request and getting a response looks like this:WebSocket Handshake Protocol (client-to-server)Service-to-client:http/1.1 101 WebSocket P

Original: WebSocket and socketWebSocket and socketsTags:websocket and sockets Introduction: Many friends want to know the connection and the difference between websocket and socket, here is what you want First to a picture collected before, I see this picture really is laughed, then also gave my friend door forwarded a bit, do not know you smiled.After reading the above figure, it should be gu

WebSocket build tutorial, websocket build How to build a websocket? The first step is to compile a simple jsp file, which mainly includes websocket connection and four websocket response events. Step 2: configure the struts. xml configuration file Step 3: Compile the back

[This article is original, if reproduced, please indicate the source http://blog.csdn.net/yl02520/article/] WebSocket is a new communication protocol HTML5, the current popular browsers support this protocol, such as Chrome,safari,firefox,opera,ie, and so on, the Protocol to support the earliest should be chrome, Since the CHROME12 has started to support, as the draft protocol changes, the implementation of the Protocol is constantly updated by the va

This chapter describes the life cycle of the websocket endpoint. The lifecycle of the WebSocket endpoint provides the developer with a framework to manage the resources needed for the endpoint, as well as a framework to intercept messages. We'll look at the sequence and semantics of their lifecycle, and how the Java WebSocket API provides APIs and annotations to

"HTML5 websocket authoritative Guide" study notes 3The object attribute of the WebSocket method is 1. WebSocket method A. Send methodThe Send method is used to send a message to the server after the WebSocket connection is established.Can be divided into sending two kinds of messages, one is the ordinary text informati

. On ('message', function (event ){Console. Log ('Received message from client! ', Event );});Client. On ('disconnect', function (){Clearinterval (interval );Console. Log ('server has disconnected ');});}); You can run the server section. If nodejs is installed, run the following command from the command line:[Copy to clipboard] [-] Code:Node socket-server.js Now both the client and server can push messages back and forth! In the nodejs script, you can use simple JavaScript to create a regular m

In PHP, developers need to consider more things, from the socket connection, establishment, binding, monitoring and so on all need the developer to complete the operation, for beginners, difficulty is also very large, so the idea of this article is as follows: 1, the socket agreement brief introduction 2. Introduce the connection principle between client and server 3, PHP set up the process of socket to explain 4, use a chat room as an

data, as follows:2) long connection based on streaming dataIt is common practice to embed a hidden iframe in the page and then have the SRC attribute of the IFRAME point to a server-side address of our request, and for data updates, we encapsulate the data update operation on the page as a JS function, passing the function name as a parameter to the address.After the service side receives the request resolves the address takes out the parameter (the client JS function call name), whenever has t

API, the browser and the server only need to perform a handshake, and then a fast channel is formed between the browser and the server. Data can be directly transmitted to each other. In this WebSocket protocol, it brings us two benefits for implementing real-time services: 1. the Header that communicates with each other is very small-about 2 Bytes 2. server Push Server can actively send data to client 3 handshake protocol in the Process of

[This article is original, if reproduced, please indicate the source http://blog.csdn.net/yl02520/article/] If we want to build a Web server, we will have a lot of options, the market also has a lot of mature products for us to apply, such as open source Apache, after installation only simple configuration (or the default configuration) can work. But if you want to build a websocket server is not so easy, because