ReverseHttp Introduction Polling for updates is bad. We’ve known this for about as long as computers have existed. So why are so many web-based services (SUP, RSS and Atom feeds, Twitter, etc.) based around polling? The answer lies, first and foremost, in the asymmetry of HTTP. The web is split into two pieces: programs that make requests, and programs that handle them. It’s very rare to see a sin
Reverse HTTP is an experimental protocol which takes advantage of the HTTP/1.1 Upgrade: header to turn one HTTP socket around. When a client makes a request to a server with the Upgrade: PTTH/0.9 header, the server may respond with an Upgrade: PTTH/1.0 header, after which point the server starts using the socket as a client, and the client starts using the socket as a server. There is also a COMET
A cool new browser event just recently landed in the latest Firefox nightlies: an event announcing when the browser re-draws a portion of the page. This particular event, called MozAfterPaint fires whenever something is drawn to the screen. The event object contains two properties: .clientRects and .boundingClientRect, both of which refer to the result of the associated DOM methods. In a nutshell,
1. Document Object Model Core Editors: Arnaud Le Hors, IBM Philippe Le Hégaret, W3C Gavin Nicol, Inso EPS (for DOM Level 1) Lauren Wood, SoftQuad, Inc. (for DOM Level 1) Mike Champion, Arbortext and Software AG (for DOM Level 1 from November 20, 1997) Steve Byrne, JavaSoft (for DOM Level 1 until November 19, 1997) Table of contents 1.1 Overview of the DOM Core Interfaces 1.1.1 The DOM Structure Mo
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