Patent ID: 8112516
Filing Date: 2012-02-07
Classification: H04L

Abstract:
1. A method, comprising: receiving an indication of unavailability of an application server; responsive to the indication of unavailability, accessing flow state information to identify one or more active clients of the application server, wherein the flow state information includes data from one or more data flows between the application server and the one or more clients, the data of the flow state information comprising a source internet protocol (IP) address, a destination IP address, a source transmission control protocol (TCP) port and a destination TCP port; determining a notification channel for one or more of the active clients, determining a notification channel comprising: obtaining one or more client IP addresses corresponding to one or more respective clients of the application server; providing one or more client IP addresses to a DHCP server to retrieve one respective hosts names; and accessing, using the respective host names, a directory service to retrieve one or more user identifiers; and transmitting a notification of unavailability of the application server to the one or more active clients over the respective determined notification channels.