3.17.4.1.51 Extension (Opnum 57)

The Extension method is received by the server in an RPC_REQUEST packet. In response, the server MUST return the application-specific Message.Extension.

 [propget] HRESULT Extension(
   [out, retval] VARIANT* pvarExtension
 );

pvarExtension: A pointer to a VARIANT that contains a byte array (VT_ARRAY | VT_UI1) that contains the application-specific information.

Return Values: The method MUST return S_OK (0x00000000) on success or an implementation-specific error HRESULT on failure.

When processing this call, the server MUST follow these guidelines:

  • Set the pvarExtension output parameter to the value of the represented Message.Extension.