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FwpmConnectionSubscribe0 function

The FwpmConnectionSubscribe0 function is used to request the delivery of notifications about changes to a connection object.

Syntax

C++


DWORD WINAPI FwpmConnectionSubscribe0(
  _In_      HANDLE engineHandle,
  _In_      const FWPM_CONNECTION_SUBSCRIPTION0 *subscription,
  _In_      FWPM_CONNECTION_CALLBACK0 callback,
  _In_opt_  void *context,
  _Out_     HANDLE *eventsHandle
);

Parameters

engineHandle [in]

Type: HANDLE

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

subscription [in]

Type: const FWPM_CONNECTION_SUBSCRIPTION0*

The notifications which will be delivered.

callback [in]

Type: FWPM_CONNECTION_CALLBACK0

Function pointer that will be invoked when a notification is ready for delivery.

context [in, optional]

Type: void*

Optional context pointer. This pointer is passed to the callback function along with details of the event.

eventsHandle [out]

Type: HANDLE*

Handle to the newly created subscription.

Return value

Type: DWORD

Return code/value	Description
ERROR_SUCCESS 0	The subscription was created 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.

Remarks

This function cannot be called from within a transaction. It will fail with FWP_E_TXN_IN_PROGRESS. See Object Management for more information about transactions.

The caller needs FWPM_ACTRL_SUBSCRIBE access to the connection object's container.

Requirements

Minimum supported client	Windows 8 [desktop apps only]
Minimum supported server	Windows Server 2012 [desktop apps only]
Header	Fwpmu.h
Library	Fwpuclnt.lib
DLL	Fwpuclnt.dll

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