| Microsoft Internet Security and Acceleration Server 2004 SDK |
The IFWXIOCompletion interface includes a method that receives a notification from the Microsoft Firewall service when an asynchronous I/O send, sendto, or receive operation is completed on an IFWXSocket interface. These overlapped operations require that the filter implement this interface to carry out data pumping.
The IFWXIOCompletion interface inherits the methods of the standard COM interface IUnknown.
In addition, IFWXIOCompletion defines the following method.
| Method | Description |
|---|---|
| CompleteAsyncIO | Receives a notification from the Firewall service when an asynchronous I/O operation that was initiated on an IFWXSocket interface completes. |
When calling a method that begins an overlapped operation, the filter must pass a pointer to its IFWXIOCompletion interface to that method. The Firewall service calls CompleteAsyncIO on the IFWXIOCompletion interface of the filter when the overlapped operation completes.
ISA Server has two other notification methods for overlapped operations. The IFWXExternalIOCompletion::CompleteAsyncIO notification method is used for notification when a Windows overlapped operation completes, and the IFWXAcceptCompletion::CompleteAsyncAccept method is used for notification when the IFWXNetworkSocket::Accept method completes.
Server: Requires Windows Server 2003 or
Windows 2000.
Version: Requires Internet Security and Acceleration
Server 2004.
Header: Declared in Wspfwext.idl.
Filter Interfaces, IFWXSocket::Recv, IFWXSocket::Send, IFWXSocket::SendTo