IWMDRMNetReceiver::ProcessLicenseResponse method

Article
06/20/2023

[The feature associated with this page, Windows Media Format 11 SDK, is a legacy feature. It has been superseded by Source Reader and Sink Writer. Source Reader and Sink Writer have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Source Reader and Sink Writer instead of Windows Media Format 11 SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The ProcessLicenseResponse method processes the license response that is sent by the transmitter in reply to a license challenge.

Syntax

HRESULT ProcessLicenseResponse(
  [in]  BYTE  *pbLicenseResponse,
  [in]  DWORD cbLicenseResponse,
  [out] BYTE  **ppbWMDRMNetLicenseRepresentation,
  [out] DWORD *pcbWMDRMNetLicenseRepresentation
);

Parameters

pbLicenseResponse [in]: License response received from the transmitter.
cbLicenseResponse [in]: Size of the response in bytes.
ppbWMDRMNetLicenseRepresentation [out]: Address of a variable that receives the address of the internal license representation for the license contained in the license response message. When finished with this data, you must release the memory by calling CoTaskMemFree. This parameter may be set to NULL if the license representation is not needed.
pcbWMDRMNetLicenseRepresentation [out]: Address of a variable that receives the size of the license representation. Must be set to NULL if ppbWMDRMNetLicenseRepresentation is NULL.

Return value

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return code	Description
NS_E_DRM_RIV_TOO_SMALL	An updated content revocation list is needed.
S_OK	The method succeeded.

Remarks

The license response processed by using this method must correspond to the last license challenge generated on the client computer.

Requirements

Requirement	Value
Header	Wmdrmsdk.h