2.2.5.2 Soft-Sync Response PDU (DYNVC_SOFT_SYNC_RESPONSE)
A DYNVC_SOFT_SYNC_RESPONSE PDU is sent by a DVC client manager over the DRDYNVC static virtual channel on the main RDP connection in response to a Soft-Sync Request PDU (section 2.2.5.1). This PDU MUST include all of the multitransport tunnels that will be used by the client manager for writing data to a DVC.
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cbId |
Sp |
Cmd |
Pad |
NumberOfTunnels |
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TunnelsToSwitch (variable) |
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cbId (2 bits): Unused. MUST be set to 0x00.
Sp (2 bits): Unused. MUST be set to 0x00.
Cmd (4 bits): MUST be set to 0x09. (Soft-Sync Response)
Pad (1 byte): An 8-bit unsigned integer. Unused. MUST be set to 0x00.
NumberOfTunnels (4 bytes): A 32-bit, unsigned integer indicating the number of multitransport tunnels on which DVC data will be written by the client manager.
TunnelsToSwitch (variable): One or more 32-bit, unsigned integers, as indicated by the NumberOfTunnels field, containing the type of each tunnel on which DVC data will be written by the client manager.
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Value |
Meaning |
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TUNNELTYPE_UDPFECR 0x00000001 |
RDP-UDP Forward Error Correction (FEC) reliable multitransport tunnel ([MS-RDPEMT] section 1.3). |
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TUNNELTYPE_UDPFECL 0x00000003 |
RDP-UDP FEC lossy multitransport tunnel ([MS-RDPEMT] section 1.3). |