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DVC Server APIs

The dynamic virtual channel (DVC) server APIs are implemented by the Remote Desktop Connection (RDC) server of the connection.

In this section

TopicDescription

IWTSServerChannel

This interface is not supported.

IWTSServerChannelManager

This interface is not supported.

TPriority

This enumeration is not used.

 

Changes in Behavior for Other Server APIs

  • The server API has been extended with an additional call which opens a dynamic virtual channel (DVC). The additional call is made using the WTSVirtualChannelOpenEx function.
  • WTSVirtualChannelRead

    When using this API with DVC, it will always prepend the data read with CHANNEL_PDU_HEADER. This means that any read must be done with at least the CHANNEL_PDU_LENGTH data block passed as the input buffer.

  • ReadFile

    If the file handle to the DVC is retrieved by calling WTSVirtualChannelQuery with parameter WTSVirtualFileHandle, the same rule will apply. All reads will include the CHANNEL_PDU_HEADER, and the read buffer has to be at least CHANNEL_PDU_LENGTH size.

 

 

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