Project want to use as a real-time statistics, like 110 police love big screen kind, so used to the websocket, the result stepped on a lot of pits, record again.Environment: SPRING,SPRINGMVC (4.2.4.RELEASE), TOMCAT7Problem 1:session object is not the sameHTTP, it's javax.servlet.http.HttpSession.And WebSocket's time javax.websocket.SessionHTTP session is generally used to save user information, according to the user, the HTTP request when carrying Coo
Company project needs to develop a similar QQ, micro-letter Instant IM chat function, do real-time monitoring messages, need to use the technology is websocket.
Overview WebSocket:
1.1 Why do we need to websocket such a real-time communication protocol?
WebSocket is a form of web communication, and the HTTP protocol
I. BACKGROUND?? We all know that the HTTP protocol can only be responded to by a browser unilaterally requesting a server, and the server cannot actively push messages to the browser. There are two main ways to implement proactive browser push:
Polling: A lot of drawbacks, but simple to implement
WebSocket: Establish a TCP connection between the browser and the server for full-duplex communication
?? Springboot There are two ways to
Web projects often need to push data to customers as quickly as possible, without waiting for client requests when necessary. A two-way communication mechanism is ideal for sites that communicate with users in real time, such as online communication or document collaboration tools, or to update system state on long-running compute/execution servers. Previously, this type of problem generally used the following solution:? Using the Socket connection (http://help.adobe.com/en_US/FlashPlatform/re
To achieve the goal of this article, it is necessary to directly realize the function of chatting, and, on the basis of the chat function, and then realize the function of the cache chat record. The first step: the principle of chat implementation first, we need to clarify our needs. Usually, the chat on the Web page is the form of the chat room, so, this example also has a chat space concept, as long as in this space, you can chat together. Secondly, everyone can speak and be seen by others, so
ObjectiveIt's been a long time since the last one, and the project has started. And, because of the online on the spring boot websocket explanation is also more. So I used another communication framework T-io to implement the communication function in Layim. This article will focus on the parts of the pits and the time spent comparing my research and development process.WebSocketIn the study of T-io , I have written about the T-io framework of a few s
WebSocket protocol is HTML5 a new protocol. It implements the browser and server Full-duplex communication (Full-duplex). WebSocket is a new product of the Web2.0 era, used to make up for some deficiencies in the HTTP protocol, but the real relationship between them is a brotherly relationship, is the further encapsulation of the socket, its current most intuitive performance is the server push and chat fun
Websocket is a new communication protocol of html5. it implements two-way communication between browsers and servers. In the WebSocket 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.For more information about websocket, see Wikip
Original http://www.oseye.net/user/kevin/blog/79
I plan to explore WebSocket in the following blog posts:
WebSocket simple use (1)-Concept
WebSocket (2)-Client
WebSocket (3)-Server
WebSocket simple use (4)-complete instance
WebSock
This article describes the WebSocket implementation principle and usage of go. Share to everyone for your reference, specific as follows:
WebSocket is divided into handshake and data transfer phase, that is, the HTTP handshake + Duplex TCP connection
RFC protocol document in: http://tools.ietf.org/html/rfc6455
Handshake phase
The handshake phase is normal HTTP
The client sends a message:
Get/ch
1. OverviewWebSocket is created to meet the growing demand for real-time communications based on the Web. In the traditional Web, in order to achieve real-time communication, the common way is to use the HTTP protocol to continuously send requests. However, this means wasting bandwidth (HTTP HEAD is relatively large) and consuming server CPU (no information is required to accept requests). (from websocket.org)Instead of using WebSocket technology, the
Java Reality WebSocket --Reprint Directory
Server-side implementation (TOMCAT)
Client implementation (Java-websocket)
Client implementations (JavaScript native API)
1. Server-side implementation (TOMCAT)Java implementation of the WebSocket, on the server side is through Tomcat embedded support, we need to develop an inherited websocketservle
Some time ago wrote two articles about HTTP and WebSocket, and some people said they wanted to know the difference between websocket and sockets. This question before also has thought, oneself to this is has the approximate answer, but is not quite certain, therefore collects some information (actually is all sorts of Google), has looked many previous documents, thought some story is very interesting, the c
ObjectiveThe MQTT protocol focuses on network and resource-constrained environments, and it is normal to not consider the Web environment at the beginning of the establishment. Nevertheless, it does not mean that it is not suitable for the HTML5 environment.HTML5 WebSocket is a two-channel communication based on TCP, similar to TCP communication, and is suitable for web browser environments. Although the MQTT gene plane chooses TCP as the communicatio
The first thing to say is the question I met:
WebSocket connection to 'ws://www.xxxx.com/xxx/xx' failed: Error during WebSocket handshake: Unexpected response code: 200网站绑定到了服务器,直接在服务器上访问webSocket服务是可行的,但是当我用外网访问时,这个错误就是我最大的敌人,在这之前还遇到过几个小毛贼,可以轻松解决,不再提,直面boss吧花费两个下午的时间寻找解决方案,但是并没有找到,各种解决方案,但是直接来描述.NET下使用这一问题的,却是不多,然而面对了这一问题的朋友,大把的有。这个无关浏览器问题,我有火狐,谷歌,IE测试过,该出的问题还是
HTML5 has many notable new features, such as Canvas, local storage, multimedia programming interfaces, WebSocket, and so on. Although everyone is very enthusiastic about it, I personally think it still needs the support of other platforms to truly get started quot; I 've been learning HTML5 recently, in addition to the powerful canvas tool, WebSocket is also worth noting in HTML5. What is a dual-screen int
This article mainly introduces the principles of implementing the WebSocket protocol in HTML5 to help beginners understand the WebSocket protocol. If you need it, you can refer to the WebSocket Protocol for the purpose of working on the existing network infrastructure. As part of this design principle, the Protocol Specification for
Csdn lidp http://blog.csdn.net/perfectpdl
The previous article introduced websocket theory. This article analyzes the implementation of the websocket protocol client on the WebKit browser engine.
For more information about websocket APIs, see RFC 6455.
The websocket implementation code on WebKit is under the WebCore/we
My address: http://blog.csdn.net/jinglijun/article/details/9365879
This article we first understand the basic knowledge, this is more helpful to our study behind.
Socket,websocket,http,tcp and so on we have heard the ears have a cocoon, but use the time to review it.
When the university studied the Network foundation, the teacher said that the network is divided into physical layer, data link layer, network layer, transport layer, Session layer, prese
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