Nytro Posted December 28, 2014 Report Posted December 28, 2014 Introduction to HTML5 WebSockets Vangos Pterneas, 27 Dec 2014 This blog post is based on my book “Getting Started with HTML5 WebSocket Programming“, published a few months ago. There’s a special holiday offer for you until the 6th of January. What is the HTML5 WebSocket protocol? In real life, handshaking is the act of gently grasping two peo This blog post is based on my book “Getting Started with HTML5 WebSocket Programming“, published a few months ago. There’s a special holiday offer for you until the 6th of January. What is the HTML5 WebSocket protocol? In real life, handshaking is the act of gently grasping two people’s hands, followed by a brief up and down movement. If you have ever greeted someone this way, then you already understand the basic concept of HTML5 WebSockets. WebSockets define a persistent two-way communication between web servers and web clients, meaning that both parties can exchange message data at the same time. WebSockets introduce true concurrency, they are optimized for high performance and result in much more responsive and rich web applications. The WebSocket protocol is all about speed: it aims to replace the traditional polling, long-polling and AJAX calls with a native mechanism. The WebSocket protocol is part of HTML5. HTML5 is a robust framework for developing and designing web applications. It is not just a new markup or some new styling selectors, neither it is a new programming language. HTML5 stands for a collection of technologies, programming languages and tools, each of which has a discrete role and all together accomplish a specific task: building rich web apps for any kind of device. The main HTML5 pillars include Markup, CSS3 and JavaScript APIs. Together. Unlike what its name implies, the WebSocket protocol is not only about the web! The specification has been implemented from the mainstream mobile and tablet operating systems, including iOS, Android, and Windows. That means you can use the power and speed of the WebSocket protocol into a native smartphone or tablet app. The core principles remain the same, regardless of whether you use JavaScript, Objective-C, or C#. Throughout this article, we are going to implement a simple chatting web app using WebSockets. No AJAX, no polling, no refresh, no waiting. Here’s the end-result: <iframe src="http://www.youtube.com/embed/MlbAWEwmQhA"></iframe>Download the source code from GitHub Articol complet: Introduction to HTML5 WebSockets - CodeProject Quote
