Blackberry Push SDK on Google App Engine

My client wants to do a blackberry application using Push SDK. he wants to host the application on Google App Engine. where the client sends the updates to the App Engine and a开发者_开发问答pp engine pushes the updates to the subscribed blackberry devices.

As i know blackberry Push API default comes with Tomcat Server. My problem is, is it possible to implement Push API in Google App Engine? and how can i do it?

If the Push API uses HTTP (and it looks like it does) then yes, you can certainly use it from App Engine - just implement their protocol as specified in their docs.