FLASH as

There are these types of returns.
1.NetConnection.Call.Failed Error
NetConnection.call () call server side methods have failed. Back to the info object contains a specific description call failed. for in what can be seen.
2.NetConnection.Connect.AppShutdown Error
Server-side application was closed for some reason (server-side resources over-occupancy), or the server has been shut down.
3.NetConnection.Connect.Closed Status
Connection is lost.

Perhaps you have heard, the support of the upcoming P2P service, code-named “Stratus”, this service allows Flash Player 10 and AIR 1.5 client to develop the form of P2P exchange of data. The P2P is based on UDP protocol instead of TCP, the UDP of the new Adobe agreement was given a new name: RTMFP [...]

FMIS Feature Explorer is a desktop AIR written procedures, contained inside a 30 Flex + FMS small sample procedures, including the majority of FMS function, is a good entry resources.

More detailed presentations and download see here:
http://www.adobe.com/devnet/flashmediaserver/articles/fmis_feature_explorer.html