IWMDRMMessageParser::ParseRegistrationReqMsg method (wmsdkidl.h)

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[ParseRegistrationReqMsg is available for use in the operating systems specified in the Requirements section. It may be altered or unavailable in subsequent versions. Instead, use Microsoft PlayReady. ]

The ParseRegistrationReqMsg method extracts the device certificate and identifier from a registration message sent by a device.

Syntax

HRESULT ParseRegistrationReqMsg(
  [in]  BYTE       *pbRegistrationReqMsg,
  [in]  DWORD      cbRegistrationReqMsg,
  [out] INSSBuffer **ppDeviceCert,
  [out] DRM_VAL16  *pDeviceSerialNumber
);

Parameters

[in] pbRegistrationReqMsg

Address of the registration message in memory. This is a message received by your application from a device.

[in] cbRegistrationReqMsg

The size of registration message in bytes.

[out] ppDeviceCert

Address of a variable that receives the address of the INSSBuffer interface of the buffer object that contains the device certificate.

[out] pDeviceSerialNumber

Address of a DRM_VAL16 structure that receives the device identifier.

Return value

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

Remarks

Registration request messages are sent by devices when they are connected to a network shared by the computer running your application. When your application receives the message, it must first parse the message by using this method to retrieve the device certificate and device identifier. The combination of device certificate and device identifier uniquely identifies the device.

After parsing the message with this method, you can search the device database to determine whether the device is already registered, or you can try to register the device. Both of these actions use the methods of the IWMDeviceRegistration interface.

Requirements

See also

IWMDRMMessageParser Interface