Flash Player 9 and later, Adobe AIR 1.0 and later
Adobe® AIR® and Adobe® Flash® Player applications can communicate with HTTP-based servers to load data, images, video and to exchange messages.
flash.net.URLLoader
flash.net.URLStream
flash.net.URLRequest
flash.net.URLRequestDefaults
flash.net.URLRequestHeader
flash.net.URLRequestMethod
flash.net.URLVariables