GetUniDirectionalAdapterInfo function (iphlpapi.h)

The GetUniDirectionalAdapterInfo function retrieves information about the unidirectional adapters installed on the local computer. A unidirectional adapter is an adapter that can receive datagrams, but not transmit them.

Syntax

IPHLPAPI_DLL_LINKAGE DWORD GetUniDirectionalAdapterInfo(
  [out] PIP_UNIDIRECTIONAL_ADAPTER_ADDRESS pIPIfInfo,
  [out] PULONG                             dwOutBufLen
);

Parameters

[out] pIPIfInfo

Pointer to an IP_UNIDIRECTIONAL_ADAPTER_ADDRESS structure that receives information about the unidirectional adapters installed on the local computer.

[out] dwOutBufLen

Pointer to a ULONG variable that receives the size of the structure pointed to by the pIPIfInfo parameter.

Return value

If the function succeeds, the return value is NO_ERROR.

If the function fails, use FormatMessage to obtain the message string for the returned error.

Requirements

See also

IP Helper Function Reference

IP Helper Start Page

IP_UNIDIRECTIONAL_ADAPTER_ADDRESS