3.2.5.3.3 Clean-Up Processing

Because the protocol does not guarantee a response to a wsignoutcleanup1.0 message, a requestor IP/STS SHOULD clean up the locally cached session state that it maintains before sending wsignoutcleanup1.0 messages. For example, as specified in section 3.1.1.5.1, the WebBrowserRequestorSession record SHOULD be deleted from the Outbound Sessions List. As each wsignoutcleanup1.0 message is sent, the requestor IP/STS SHOULD delete the corresponding Session Entry from the record. When the last Session Entry is deleted, the WebBrowserRequestorSession SHOULD be deleted from the Outbound Sessions List.<64>