3.1.1 Abstract Data Model
As specified in section 1.3.1, the initialization phase from [MS-RDPEUDP] is used to negotiate the version of RDP UDP protocol. If the negotiated version is greater than RDPUDP_PROTOCOL_VERSION_2, then RDP UDP Transport Extension v2 is used for the data transfer. RDP UDP Transport Extension v2 is a self-sufficient transport protocol that has a flow control mechanism that monitors packet flow in steady network traffic and that deals with packet losses caused by the unreliability of underlying UDP transport. The information exchanged over this protocol is used to detect available bandwidth and adapt the Remote Desktop Protocol to provide optimal performance for the detected runtime network condition.