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FwpmConnectionEnum0 function (fwpmk.h)

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The FwpmConnectionEnum0 function returns the next page of results from the connection object enumerator.

Syntax

NTSTATUS FwpmConnectionEnum0(
  [in]  HANDLE           engineHandle,
  [in]  HANDLE           enumHandle,
  [in]  UINT32           numEntriesRequested,
  [out] FWPM_CONNECTION0 ***entries,
  [out] UINT32           *numEntriesReturned
);

Parameters

[in] engineHandle

Handle for an open session to the filter engine. Call FwpmEngineOpen0 to open a session to the filter engine.

[in] enumHandle

Handle for a provider context enumeration created by a call to FwpmConnectionCreateEnumHandle0.

[in] numEntriesRequested

Number of connection objects requested.

[out] entries

Addresses of enumeration entries.

[out] numEntriesReturned

The number of entries returned in the entries parameter.

Return value

Return code/value Description
ERROR_SUCCESS
0		 The connection objects were enumerated successfully.
FWP_E_* error code
0x80320001—0x80320039		 A Windows Filtering Platform (WFP) specific error. See WFP Error Codes for details.
RPC_* error code
0x80010001—0x80010122		 Failure to communicate with the remote or local firewall engine.
Other NTSTATUS codes An error occurred.

Remarks

If the numEntriesReturned is less than the numEntriesRequested, the enumeration is exhausted.

The returned array of entries (but not the individual entries themselves) must be freed by a call to FwpmFreeMemory0.

A subsequent call using the same enumeration handle will return the next set of items following those in the last output buffer.

FwpmConnectionEnum0 works on a snapshot of the connection objects taken at the time the enumeration handle was created.

Requirements

Requirement Value
Minimum supported client Available starting with Windows Vista.
Target Platform Universal
Header fwpmk.h
Library fwpkclnt.lib
IRQL <= PASSIVE_LEVEL

See also