Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
The Remote Desktop UDP Transport Extension v2 protocol has two distinct phases of operation. The initial phase, UDP Connection Initialization, occurs when a UDP connection is initialized between the terminal client (2) and the terminal server. Data pertaining to the connection is exchanged and the UDP connection is setup as described in [MS-RDPEUDP]. After this phase is completed successfully and an RDPUDP_PROTOCOL_VERSION is negotiated, this value is used to determine which version of the UDP transport extension will be used for the Data Transfer phase. If the negotiated RDPUDP_PROTOCOL_VERSION is RDPUDP_PROTOCOL_VERSION_2 or earlier, the protocol enters the RDP-UDP Data Transfer phase, where Coded Packets are exchanged according to the protocol described in the [MS-RDPEUDP] document. If the negotiated RDPUDP_PROTOCOL_VERSION value is greater than RDPUDP_PROTOCOL_VERSION_2, the protocol enters the v2 Data Transfer phase, where Coded Packets are exchanged according to the protocol described in the current document.
Figure 2: Relationship between RDP-UDP to RDP-UDP2