SetDataSize Method of the IFWXIOBuffer Interface

The SetDataSize method sets the actual size of the memory buffer that was used.

Syntax

HRESULT SetDataSize(
  [in]  DWORD dwDataSize
);

Parameters

dwDataSize: The actual size, in bytes, of the buffer that was used.

Return Value

S_OK: The data was successfully appended to the buffer object.
E_INVALIDARG: Requested size is larger than the allocated size.

Remarks

The IFWXIOBuffer::SetDataSize method can be called by a filter after buffer content is manipulated directly by means of IFWXIOBuffer::GetBufferAndSize.

The IFWXIOBuffer::SetDataSize method can also be called by the Microsoft Firewall service, when a buffer is passed to the IFWXSocket::Recv method, to set the number of bytes actually received.

Requirements

Server	Requires Windows Server 2008.
Version	Requires Forefront Threat Management Gateway (TMG).
Header	Declared in Wspfwext.idl.
DLL	Requires Wspsrv.exe.