Happened upon this this morning: Lightstreamer
I'm sure there are more (Comet?) products like it out there...
In related news (to me), this entry at Wikipedia:
A long-polling Comet transport can be created by dynamically creating script elements, and setting their source to the location of the Comet server, which then sends back JavaScript (or JSONP) with some event as its payload. Each time the script request is completed, the browser opens a new one, just as in the XHR long polling case. This method has the advantage of being cross-browser while still allowing cross-domain implementations.
and...
An applet can open a raw TCP socket to the server from which it has loaded. This socket can remain open as long as the browser is at the document hosting the applet. Event notifications can be sent in any format — text or binary — and decoded by the applet.
and, from an ICEfaces page, also @Wikipedia:
ICEfaces Framework
The Framework is an extension to the standard JSF framework, with the key difference in ICEfaces relating to the rendering phase. In standard JSF, the render phase produces new markup for the current application state, and delivers that to the browser, where a full page refresh occurs. With the ICEfaces framework, rendering occurs into a server-side DOM and only incremental changes to the DOM are delivered to the browser and reassembled with a lightweight Ajax Bridge. This results in seamless, smooth update of the browser page with only the necessary presentation elements being rerendered. The ICEfaces Framework also provides complete run-time management of Ajax Push using the server-initiated rendering APIs, and integrates that mechanism seamlessly with the JSF lifecycle.
No comments:
Post a Comment