This event instructs the application to close an opened file.
func onCloseFile(connectionID: Int64, handle: String, operationStatus: inout Int32)
This event is fired upon receipt of a close-file packet from a client. Servers implementing virtualized transfers must close the previously opened local file referenced by Handle in this event handler. No further operations are allowed with the closed file.
Set OperationStatus to one of the following values to report the result of this operation to the client: