2.2.1 Updates to the Remote Desktop Protocol: Basic Connectivity and Graphics Remoting Specification

Support for RAIL is indicated by the client and server during the connection establishment phase of the Remote Desktop Protocol: Basic Connectivity and Graphics Remoting [MS-RDPBCGR], as described in section 1.3.2.1 for an overview of how the RAIL connection is established.

The Remote Desktop Protocol: Basic Connectivity and Graphics Remoting has also been extended to support windowing-specific drawing orders for RAIL scenarios. These orders, called Windowing Alternate Secondary Drawing Orders, describe state for windows, notification icons, and desktop-related information on the server. The following sections outline the capability sets and drawing orders that make up the Remote Desktop Protocol: Basic Connectivity and Graphics Remoting extensions for RAIL.