MICROSOFT_PRESS_EBOOK_PROGRAMMING_WINDOWS_8_APPS_WITH_HTML_CSS_AND_JAVASCRIPT_PDF

if (typeof (e.request) != 'undefined') {
var req = e.request;
var system = req.protectionSystem;
var type = req.type;
}
//Take necessary actions based on the system and type
}
if (typeof (e.completion) != 'undefined') {
//Requested action completed
var comp = e.completion;
comp.complete(true);
}
How you specifically check for rights, of course, is particular to the service you’re drawing from—and
not something you’d want to publish in any case!
For a more complete demonstration of handling DRM, check out the Simple PlayReady sample,
which will require that you download and install the Microsoft PlayReady Client SDK. PlayReady, if you
aren’t familiar with it yet, is a license service that Microsoft provides so that you don’t have to create one
from scratch. The PlayReady client SDK provides additional tools and framework support for apps
wanting to implement both online and offline media scenarios, such as progressive download,
download to own, rentals, and subscriptions. Plus, with the SDK you don’t need to submit your app for
DRM Conformance testing. In any case, here’s how the Simple PlayReady sample sets up its content
protection manager, just to give an idea of how the WinRT APIs are used with specific DRM service
identifiers:
mediaProtectionManager = new Windows.Media.Protection.MediaProtectionManager();
mediaProtectionManager.properties["Windows.Media.Protection.MediaProtectionSystemId"] =
'{F4637010-03C3-42CD-B932-B48ADF3A6A54}'
var cpsystems = new Windows.Foundation.Collections.PropertySet();
cpsystems["{F4637010-03C3-42CD-B932-B48ADF3A6A54}"] =
"Microsoft.Media.PlayReadyClient.PlayReadyWinRTTrustedInput";
mediaProtectionManager.properties[
"Windows.Media.Protection.MediaProtectionSystemIdMapping"] = cpsystems;
Streaming from App to Network
The next case to consider is when an app is the source of streaming media rather than the consumer,
which means that client apps elsewhere are acting in that capacity. In reality, in this scenario—audio or
video communications and conferencing—it’s usually the case that the app plays both roles, streaming
media to other clients and consuming media from them. This is the case with Windows Live Messenger,
Skype, and other such utilities, along with apps like games that include chat capabilities.
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