ajax websocket

In the project, you need to view the running log of the frame in the Docker container in real time in the browser, and on the server you can get tail-f execution result InputStream stream by the RESTful interface provided by Docker. The browser HTTP protocol is a request-response protocol, in order to obtain data, you must initiate a request, obviously and the Java InputStream concept is not collaborative, the server can not real-time push log stream to the browser. Using

small value, which consumes a lot of bandwidth and server resources.and the newer technology to do the polling effect is comet, using Ajax. However, although this technology can achieve two-way communication, but still need to make requests, and in comet, the widespread use of long links, which also consumes a lot of server bandwidth and resources.In the face of this situation, HTML5 defines the WebSocket

pipes unless one of them cuts the pipe, and if the server does not support, the client requests the link to fail, returning an error message; HTTP and WebSocket response header comparison: The difference between WebSocket and Ajax polling, long poll The first is Ajax polling, the principle of

Websocket connection failed. websocket connectionWebsocket connection failed @ (Markdown)Recently, the project debugs the server implemented by nodejs related to websocket. Those who are new to web development are not familiar with the websocket protocol and may suffer from problems. Here we only talk about what we un

See More:spring WebSocket ReferenceThe whole example is part of Wisemenuframework and can clone the whole project, and if friends have needs, I can organize a separate demo. Next: Spring WebSocket 1 (Spring websocket Introductory tutorial) WebSocket Front-end preparationFront-end we need to use two JS files:So

Next, this article uses the programming websocket to implement the previous example:Service-side endpoint, no longer using serverendpoint annotations:publicclassprogramerserverextendsendpoint{ @Override publicvoidonopen (SESSIONNBSP;SESSION,NBSP;ENDPOINTCONFIGNBSP;EDC) {system.out.println ("somebodyiscoming!"); Session.addmessagehandler (newmessagehandler.wholeInstead of inheriting a endpoint-like class, we found that the endpoint provides three met

Introduction:Prepare some HTML5 new technologies to enhance the project tools. The design background interaction part selects HTML5 websocket, studies the basic usage, and wants to write some feelings about websocket practices. I personally think that the emergence of websocket is an innovation in Web application interaction design. Before

The learning background knew WebSocket long ago, but there was little support for it either by the browser or by the development technology. However, Spring4 suddenly released, let me a bright, Spring4 directly support WebSocket. For spring I still like, it makes Java Web Development quite artistic, this support websocket and my appetite, so immediately went to s

Use webSocket to enable webpage and server communication and websocket Communication WebSocket protocol is a new HTML5 protocol. It enables full-duplex communication between the browser and the server ). For details, refer to the relevant materials. Here is a simple example of a simple page to communicate with the server.Create a web Project (based on tomcat-7 (v

Installation under CentOS6.5 environmentCheck if the Epel is installedYum RepolistIf you do not see the Epel in the results, install it via the Yum commandYum Install http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpmStart installing node. js After installing the above environmentsudo yum install Nodejs npm--enablerepo=epel2 Installing Websocket-benchUsing NPM to install in a global mannerNPM install-g

This section describes declarative WebSocket programming, which can be compared with the latter programming WebSocket:First on the service side:@ServerEndpoint ("/chat") publicclassdeclarativeserver{ @OnOpen publicvoidonopen (sessionsession) { system.out.println ("somebodyiscoming!"); } @OnClose publicvoidonclose () {} @OnMessage publicvoid OnMessage (stringmessage,sessionsession) throwsIOException{ NBSP;NBSP;NBSP;NBSP;SYSTEM.OUT.PRINTLN (message);

are used, unless one party manually disconnects the pipe. If the server does not support the pipe, the client request link fails and an error message is returned; Http and websocket Response Headers: Differences between websocket and ajax Round Robin and long poll The first is ajax round-robin. The principle of