3.2.5.2.1.1 Processing a Get Supported Versions Request

The client MUST retrieve the ClientPrinterId field upon receipt of the GET_SUPPORTED_VERSIONS_REQ message. The client MUST find the appropriate printer driver name by matching the ClientPrinterId to the DeviceId field in the Remote Desktop Protocol: File System Virtual Channel Extension which is described in [MS-RDPEFS] section 2.2.1.3. The client MUST retrieve the Version field data from the client printer driver.