Cross-Domain Ajax with Flash

flXHR is a *client-based* cross-browser, XHR-compatible tool for cross-domain Ajax (Flash) communication. It utilizes an invisible flXHR.swf instance that acts as sort of a client-side proxy for requests, combined with a Javascript object/module wrapper that exposes an identical interface to the native XMLHttpRequest (XHR) browser object, with a few helpful additions and a couple of minor limitations (see the documentation for more details).

flXHR requires plugin v9.0.124 for security reasons. See the documentation for a configuration flag "autoUpdatePlayer" which will attempt to automatically inline update the plugin if need be.

The result is that flXHR can be used as a drop-in replacement for XHR based Ajax, giving you consistent, secure, efficient cross-domain client-to-server cross-domain Ajax communication, without messy workarounds such as IFRAME proxies, dynamic script tags, or server-side proxying.

flXHR brings a whole new world of cross-domain Ajax and API-consistency to any browser with Javascript and Flash Player plugin v9+ support (Adobe claims Flash has 99% browser support now External Link). No other methods or workarounds can claim that kind of wide-spread support or consistency. In addition, flXHR boasts the ability to be dropped-in to many different Javascript frameworks (Dojo, Prototype, jQuery, etc) for even easier and more robust Ajax usage.

http://flxhr.flensed.com/