IFWXLowResourceRecoveryOperation Interface

The IFWXLowResourceRecoveryOperation interface is the application filter interface that you implement to respond when a low resource failure occurs. For a description of the low resource recovery mechanism, see the Remarks section of this topic.


interface IFWXLowResourceRecoveryOperation : IUnknown


The IFWXLowResourceRecoveryOperation interface inherits the methods of the IUnknown interface.

In addition, IFWXLowResourceRecoveryOperation defines the following method.

Method Description


Implemented so that your application filter responds appropriately to a failure caused by low resources.


To use the low resource recovery mechanism, your filter has to register with the Microsoft Firewall service using the IFWXLowResourceRecoverer::RegisterForLowResourceRecovery method so that the filter will handle failures. When a failure occurs, the filter can check the error message to ascertain whether the failure was caused by low resource availability. If so, the filter calls the IFWXLowResourceRecoverer::SignalLowResourceFailure method, providing a cookie identifying the failure, and indicating to the Firewall service that the filter wants to recover from the failure. The Firewall service then calls the IFWXLowResourceRecoveryOperation::Recover method, which can retry the operation periodically until it succeeds.


Server Requires Windows Server 2008.
Version Requires Forefront Threat Management Gateway (TMG).

Declared in Wspfwext.idl.

See Also

Filter Interfaces

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Build date: 11/30/2009

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