475 results about "Session state" patented technology

A Voice over Internet Protocol (VoIP) network is described in which session state is maintained in access switches, but not signaling gateways which maintain transaction state only during pendency of a related transaction. The signaling gateway further provides transparent inter-operation between the VoIP network and non-IP networks, such as the PSTN, by means of a translator which directly translates messages between the networks.

A technique for managing the session state of a web application during transaction processing. When a message is exchanged between a web client and a web server, such as a web client request or a web server response, session information therein is stored on behalf of the client. Following an interruption in session state, the session state may be recreated by using the stored session information.

One embodiment of the present invention provides a system for facilitating session migration. During operation, the system receives a communication packet from a client destined to a remote server. The system determines whether the communication packet belongs to a pre-existing communication session, and whether session state information associated with the session is available locally. In response to the communication packet belonging to a pre-existing communication session and the session state information being unavailable locally, the system constructs an interest requesting the session state information, disseminates the interest over a network, and receives the session state information.

Business applications running on a content delivery network (CDN) having a distributed application framework can create, access and modify state for each client. Over time, a single client may desire to access a given application on different CDN edge servers within the same region and even across different regions. Each time, the application may need to access the latest “state” of the client even if the state was last modified by an application on a different server. A difficulty arises when a process or a machine that last modified the state dies or is temporarily or permanently unavailable. The present invention provides techniques for migrating session state data across CDN servers in a manner transparent to the user. A distributed application thus can access a latest “state” of a client even if the state was last modified by an application instance executing on a different CDN server, including a nearby (in-region) or a remote (out-of-region) server.

The present invention discloses a solution for migrating an application session from one device to another. In the solution, a migration event can be detected during an application session involving an application server and an original device. Client-side session information and server-side session information can be stored. The client-side session information can be conveyed to a transfer device, which establishes a communication connection with the application server. This session can occur after an arbitrary delay from an occurrence of the migration event. Transfer device settings can be changed in accordance with the client-side session information and application server settings can be changed in accordance with the stored server-side information. An application session involving the transfer device and the application server can be conducted, beginning in a state approximately equivalent to that which existed at the time of the migration event.

A system and method for providing user session state across various networked machines is disclosed. The system encompasses a session saver and a sessions database centrally maintained for access by a plurality of computing devices. The system indexes each stored variant by a user defined key and a descriptive variable name. The session saver is a drop in replacement for the IIS session object that provides session state without using cookies. The session saver is divided into various subcomponents, including Csaver for providing the COM interface, OleDbSessionTable to read and write the data from an OLE database, Cconnection for retrieving a connection string from a UDL file, RegistryInfo that reads the location of the UDL file from the memory, StorageVariant enabling storage of variants in any properly configured OLE DB provider, and CcomVariantEx. Any of the operations servers generates a session key when initially contacted by the user and the session saver stores the session key and variables associated with the particular session, such as account numbers, passwords accepted, and so forth. These session keys and stored variables are available to any of the other operations servers and a procedure for retrieving these keys and variables is performed each time a session is either commenced or resumed. Each generated session key is unique and non predictable such that multiple operation servers can simultaneously generate keys without conflict.

A gateway for mobile access includes a foreign agent that receives user profile data and session state data from a home authentication, authorization and accounting (AAA) system of a mobile node, and a dynamic packet filter that performs multi-layer filtering based on the user profile data. The foreign agent transfers a session from a first network to a second network without session interruption, using the session state data, when the mobile node moves from the first network to the second network. The packet filter permits Internet access by the mobile node without passing Internet data requested by the mobile node through the first network. The mobility access gateway may be used in combination with a GPS signal receiver to provide Internet access to passengers of a mass transit vehicle and to propagate GPS location data to the Internet for tracking the mass transit vehicle.

A method is presented for managing session identifiers amongst a set of servers. The servers receive resource requests from clients, and the servers maintain sessions having session state information wherein each session is associated with a session identifier. When a server sends a response to a client, the response is accompanied by a first cookie and a second cookie, wherein the first cookie contains a copy of the session identifier and the second cookie contains a copy of the session identifier that has been cryptographically protected using a cryptographic key, wherein each server in the set of servers possesses a copy of the cryptographic key. If a server does not recognize the session identifier in the first cookie, the server decrypts the second cookie, and if the session identifier from the cookies are identical, the server will reuse the session identifier rather than generating a new session identifier.

The present invention provides a system and method for distributing load among redundant, independent, stateful web server sites that overcome the limitations of prior art solutions. This is accomplished by constructing the server computer to respond to an initial connection request from a client computer with the name of a server computer site, pool or group selected based on various criteria. The server computer site, pool and group names are maintained in DNS nameservers with load balancing and failover capabilities. As a result, the single-point-of-failure and performance issues introduced by prior art web proxy servers are eliminated. In addition, since the session state information is only maintained on the selected server computer site, the need to synchronize web proxy server state with server computer state is eliminated.

The present invention is a conversation control apparatus for carrying out conversation control based on both speech content and conversation state and information acquired from outside, and carrying out natural responses. This apparatus comprises a conversation database storing a plurality of items of conversation topic specifying information, a conversation control unit for selecting a reply sentence using conversation topic specifying information determined using the conversation history and conversation information, and an environment recognition unit for acquiring environment recognition information, wherein the environment recognition unit generates event information based on acquired environment recognition information, and the conversation control unit selects a reply sentence based on the event information.

A method, in a first network element of an inter-chassis redundancy (ICR) system, of cooperating with a second network element of the ICR system to provide ICR. The network elements are coupled by a synchronization channel. IP addresses are announced with a favorable traffic direction attribute. It is determined that the second network element either has announced the IP addresses with an unfavorable traffic direction attribute less favorable than the favorable direction attribute, or has not announced the IP addresses. Sessions that are connected through the IP addresses are handled. Session state synchronization messages that include session state for the handled sessions are transmitted over the synchronization channel to the second network element. It is determined, after an occurrence of a failure event that inhibits the first element from handling the sessions, that the IP addresses have been announced by the second network element with a favorable traffic direction attribute.

A services broker provides session suspend and resume capabilities to a computer-supported multi-user session made up of associations between a plurality of participants and the services broker. The services broker includes: a memory; an input/output subsystem for transmission of session data and for communicating with the plurality of participants; a processor, operatively connected to the memory, for carrying out instructions. The instructions cause the processor to: receive a trigger event from at least one of the plurality of participants, the trigger event for resuming a suspending session; verify that the suspending session can be resumed; transmit a resume request to the plurality of participants; and re-establish associations among the plurality of participants. Additionally, the services broker will transmit a stored session state and stored session data to at least one environmental device for resuming the suspended session at the point where the suspended session ended. The services broker also carries out instructions for suspending a joint session.

The present disclosure presents systems and methods for maintaining operation of stateful sessions by a secondary multi-core appliance upon failover of a first multi-core appliance. A stateful session failover module of primary appliance may receive session states from each of the cores of the primary appliance. The stateful session failover module may communicate the session states of the cores of the primary appliance to a stateful session failover module of the secondary appliance. The stateful session failover module of the secondary appliance may update each of the cores of the secondary appliance with the session states. Upon failover, cores of the secondary appliance may maintain operation and features of the sessions handled by the primary appliance prior to failover using the received state sessions for each session maintained.

A session management system is provided for resumption of a previously interrupted session between an application client and an application server. The session management system includes: an application client and a session control agent residing on a mobile network device; and a session manager residing on a router of a home network associated with the mobile network device, such that messages to and from the mobile network device pass through the router. The session manager is able to intercept application information being exchanged between the application client and the application server and store a session state based upon the intercepted application information. The session control agent can subsequently interface with the session manager to restore the session state between the application client and the application server.

This invention describes how combined session and resource tracking in a mobile node (MN) and/or basestation in a dynamic network resource environment can be used to control reactions to resource shortages. The session that is to experience a resource shortage is detected either by the MN, or communicated to the MN where session signaling is used to modify the session according to MN and basestation policy/configuration. The basestation can alternatively modify the session itself with all the session peers, on behalf of the MN. The specific new reaction to resource shortages that is then enabled is to place the session on hold such that the resources are freed, but so that the session state is maintained in the peers. This is preferable to dropping the session, as is generally the case in dynamic environments, if the likely period of resource loss is short and the session modifications require less overhead than restarting the session when the resources return after dropping the session. In addition, before having resources removed, the basestation can provide the MN with an opportunity to upgrade the priority of its resource request compared to other users in the cell, so that a resource auction is conducted to decide which MN actually loses its resources.

An invention is disclosed managing the replicated and migration capable state for an enterprise Java bean (EJB) application. The invention includes executing a Java application on a server that includes an entity bean. In addition, a replicated state manager is executed that includes program instructions for managing an in-memory state of the Java application, and program instructions for replicating the in-memory state of the Java application to a replicated state server. The replicated state server can be a memory replicated state server, or a disk replicated state server. To facilitate application state management, embodiments of the present invention store states of the entity beans objects using state objects, which are updated in response to changes in the state of the application. Hence, the embodiments of the present invention define a logical separation between the application and the state objects.

This document describes, among other things, systems and methods for more efficiently resuming a client-to-origin TLS session through a proxy layer that fronts the origin in order to provide network security services. At the time of an initial TLS handshake with an unknown client, for example, the proxy can perform a set of security checks. If the client passes the checks, the proxy can transmit a ‘proxy token’ upstream to the origin. The origin can incorporate this token into session state data which is passed back to and stored on the client, e.g., using a TLS session ticket extension field, pre-shared key extension field, or other field. On TLS session resumption, when the client sends the session state data, the proxy can recover its proxy token from the session state data, and upon successful validation, bypass security checks that it would otherwise perform against the client, thereby more efficiently handling known clients.

System and method for capturing and/or restoring session state of a machine without using image files. Session state information for a first computer system may be captured in a structured state capture file (SSCF) using metadata to represent the session state and steps or actions which produced the session state, and does not include a memory image or memory dump of the first computer system. The SSCF may be stored, and subsequently provided for restoration of the session state on the first computer system or a different computer system. A server computer system may store the SSCF (with other SSCFs) and may provide the SSCF to the first computer system or a different computer system over a network for session state restoration, e.g., in response to a request over the network. The first computer system may implement a virtual machine (VM). The session state may be that of the VM.