InternetTransferTicket

AcquireDataLink ReleaseDataLink

Attributes

DataLink

Fields

instance InternetTransferTicket tag;
    lastAttempt: 0;
         stream: nilObject;
  serviceChoice: nilObject;
  processedCard: nilObject;
       followOn: nilObject;
statusAnnouncement: nilObject;
 transferFailed: false;
   transferDone: false;
       dataLink: nilObject;
end instance;

Define Class InternetTransferTicket;
    inherits from TransferTicket;
    
    field dataLink: DataLinkServer, weak, getter, setter;
        // weak field, since active data links may be shared
    
    attribute DataLink: DataLinkServer;
        // the link server
            
    operation AcquireDataLink();
        // brings up a data link based on the ticket's InternetServiceChoice.
        // Connects the driver, attaches the new dataLink to iIPSwitch, and
        // registers DNS for the InternetProvider.
    operation ReleaseDataLink();
        // terminates connection, releasing the dataLink
end class;