Build a Web Socket Server. I t is a little-known feature of Adobe AIR that you can build and publish applications using a web standards-based workflow. That’s right, take an “index.html” add some “mycode.js” and turn it into an application to be deployed as a desktop application. This feature has actually been there since the beginning, and comes with all fashion of fun and interesting API. One of those APIs is the ability to create a raw socket server. With this in mind, I couldn’t pass up on the opportunity to implement a Web Socket server with JavaScript. Web Sockets have actually been under development as a specification for a few years. In the early days there was a fair amount of contention around how exactly to make the connection to the server securely.
As you might expect, to create a socket server with AIR, you use the class ServerSocket. Var connections = new Array(); var socket = new air.ServerSocket(); socket.addEventListener( air.ServerSocketConnectEvent.CONNECT, function( evt ) { // Handshake break; HTML5 Web Socket in Essence. Download TeamPoker.zip - 89.79 KB Table of Content Introduction HTML5 WebSocket defines a bi-directional, full-duplex communication channel that operates through a single TCP socket over the Web, it provides efficient, low-latency and low cost connection between web client and server, based on WebSocket, developers can build scalable, real-time web applications in the future.
Section below is the official definition of WebSocket copied from IETF WebSocket protocol page: The WebSocket protocol enables two-way communication between a user agent running untrusted code running in a controlled environment to a remote host that has opted-in to communications from that code. This article is trying to go through WebSocket basic concept, the problems it is going to solve, explain it in essence, watch some experimental Demos, develop a simple WebSocket application in action (Team Poker), and describe current open issues of WebSocket. Background Finally a more readable diagram:
Pywebsocket - WebSocket server and extension for Apache HTTP Server for testing. Paul Batum: Getting started with WebSockets in Windows 8. Update: Originally this post was written for the Windows 8 Developer Preview but most of the material is applicable for the Consumer Preview as well. My WebSocket samples project has been updated to be compatible with the Windows 8 Consumer Preview, so use this instead of the BUILD 2011 samples. Last week I spoke at the BUILD conference about WebSockets. Web Sockets Now Available In Google Chrome. Starting in the Google Chrome developer channel release 4.0.249.0, Web Sockets are available and enabled by default.
Web Sockets are "TCP for the Web," a next-generation bidirectional communication technology for web applications being standardized in part of Web Applications 1.0. We've implemented this feature as described in our design docs for WebKit and Chromium. The Web Sockets API enables web applications to handle bidirectional communications with server-side process in a straightforward way. Developers have been using XMLHttpRequest ("XHR") for such purposes, but XHR makes developing web applications that communicate back and forth to the server unnecessarily complex. XHR is basically asynchronous HTTP, and because you need to use a tricky technique like long-hanging GET for sending data from the server to the browser, simple tasks rapidly become complex.
You can use Google Chrome and pywebsocket to start implementing Web Socket-enabled web applications now. Web Socket Server. Introduction I've been hearing about HTML5 for quite some time now, and I especially liked the idea of web sockets.
Giving us the ability to send data directly to the user, instead of doing something like polling with AJAX requests seems like a very neat idea. So the other day, I decided that I would try to make a small server and test it out on my localhost. As far as I can tell, only Google Chrome supports web sockets at the moment, but I sure hope that it will pick up.
This screenshot is an example of how web sockets could be used (the code is in the attached zip file). Naturally, I started the development with a Google search; this however didn't really help much. Background.