3.1.5.4.3 Relation to Soft-Sync

Before Soft-Sync is complete, the dynamic virtual channels that are tunneling static virtual channel data will send and receive data using the DRDYNVC static virtual channel on the main RDP connection. If Soft-Sync completes successfully on these dynamic virtual channels, they MUST start to use a reliable multitransport tunnel.

The server manager SHOULD perform Soft-Sync on all dynamic virtual channels that are tunneling static virtual channel data by indicating each channel ID in the SoftSyncChannelLists field of the Soft-Sync Request PDU (section 2.2.5.1). The server manager MUST specify a reliable transport (for example, TUNNELTYPE_UDPFECR) in the TunnelType field of a Soft-Sync Request PDU that specifies one or more dynamic virtual channels tunneling static virtual channel data.