Abstract:
Methods, apparatus, and products for managing presence information of a presentity through a network according to a loosely-coupled network architecture style, the presentity representing a user of the network, are described that include receiving, by the presence information server, a request message to administer presence information of the presentity in a presence information document, the presence information document implemented as a markup document that includes one or more dedicated sections for presence information of the presentity, the request message identifying an action to administer presence information in the presence information document, and an identification of a dedicated section; retrieving, by the presence information server in response to the request message, the presence information document; and modifying, by the presence information server, the presence information document, including administering, in accordance with the request message, the presence information of the presentity in the presence information document.
Abstract:
A system for testing branch execution and state transition logic in session initiation protocol application modular components. A test harness constructs, sends, and initializes an artificial session initiation protocol runtime environment in order to test session initiation protocol application modular components. The artificial session initiation protocol runtime environment simulates session initiation protocol messages and a determines whether an appropriate session initiation protocol event occurs. Subsequent to determining whether the appropriate session initiation protocol event occurs in response to the simulated session initiation protocol messages, a report of the test results is generated.
Abstract:
Given a SIP call flow definition and WSDL extended with SIP/call flow interactions, a converged application integration (CAI) engine provides service-oriented application practitioners with an ability to reuse existing Web services integration techniques in a new converged application integration green space. The converged application integration engine “wraps” a pre-existing converged Web service/SIP or a SIP-only application, listens to application-specific signaling, and based on a supplied WSDL with SIP/call flow extensions, makes and accepts interaction requests using Web services. Given a SIP call flow definition, a WSDL extended with SIP/call flow interactions, and the converged application integration engine, a converged application execution (CAE) engine that greatly eases developing new converged applications. At runtime, the CAE engine “stitches” the signaling onto the decomposed servlet model by following the WSDL extended with SIP/call flow interactions. At appropriate binding points, the CAE engine invokes the listener callback interfaces.
Abstract:
The present invention discloses a solution for modifying a group list server to perform syndication feed operations. A syndication feed creation software component, a content gathering component, and a content extraction converting component can be added to a group list server. The modified group list server can continue to function as a traditional list server and can also function as a traditional feed server that is able to interoperate with standard, client-side feed readers. In one embodiment, the modified list server can repurpose syndication groups as to operate as syndication feed channels and can repurpose group members to operate as feed items.
Abstract:
Mechanisms for developing Diameter applications are provided. The mechanisms extend the application server servlet model to support Diameter applications. A “base protocol” servlet is provided that handles the basic Diameter protocol functionality. Base application servlets are provided for each Diameter interface (for example, an “Sh” base servlet for the IMS “Sh” interface). These servlets are base classes for application code. The base application servlets implement additional semantics on top of the base protocol servlet to support additional attribute-value pair semantics. With the system and method, Diameter servlets share the same ServletContext as HTTP and SIP servlets. This mechanism facilitates communication between the various application entities and facilitates generation of converged applications.
Abstract:
An extended Web services description language (WSDL) is provided to allow for the merging of call flow XML with the interface description. This is accomplished through additional WSDL bindings for operations that associate an operation with segments or message points within the call flow. In addition, the extension to WSDL defines a set of interactions that provide additional semantics for how the operation interacts with the call flow. These interactions capture the interaction points between the WSDL. The WSDL interfaces that are created may be used for outbound interactions (i.e. initiated through Web services from some event within the call flow) or for the usual inbound request response. An additional lifecycle listener interface is used to convey different binding points between an enhanced converged Web service processing engine and a converged application implementation of the WSDL.
Abstract:
A system for managing failover in a server cluster. In response to detecting a failed server, subscription message processing of a failover server is stopped. A subscription queue of the failed server is opened. A marker message is published to all subscribers of a particular messaging topic. The marker message includes an identification of the failover server managing the subscription queue of the failed server. Messages within the subscription queue of the failed server are processed. In response to determining that a message in the subscription queue of the failed server is the marker message, the subscription queue of the failed server is closed. Then, the failover server resumes processing of its original subscription queue looking for the marker message, while processing yet unseen messages from the queue. Once the marker message is found in the original subscription queue, normal operation is resumed.
Abstract:
Mechanisms for distributing rate limits and tracking rate consumption across members of a cluster are provided. One member of the cluster is responsible for controlling the distribution of rate capacity across members of the cluster. Rate capacity may be distributed in a hierarchical fashion to account for the needs of the various services, applications, and/or operations provided by the cluster members. A hierarchical tree structure may be formed by distributing rate capacity among a plurality of nodes arranged at a global, service, application or operation level of the tree. In some cases, rate capacity may also be distributed at a requester level to account for the needs of requesters who are granted access to the services, applications and operations provided by the cluster members.
Abstract:
Mechanisms for burst traffic smoothing for Session Initiation Protocol (SIP) processing elements are provided. A dispatch queue management engine determines whether a received packet is a TCP or UDP packet. If the packet is a TCP packet, the packet is automatically added to the dispatch queue. If the packet is a UDP packet, a value for a drop function ƒ is generated and a random or pseudo-random number r is generated. If r has a predetermined relationship to ƒ, then the UDP packet is added to the dispatch queue, otherwise the UDP packet is discarded. The value for ƒ is based on the current dispatch queue load, the network quality, the retransmission rate, and the allowable drop rate. Thus, the determination as to whether to drop UDP packets or not is configurable by an administrator and also adaptable to the current network and dispatch queue conditions.
Abstract:
A method, apparatus, and computer instructions are provided for a session initiation protocol application design, development, execution, and integration. A framework with a framework controller, an application data object, transition handlers, precondition handlers and post condition handlers is provided. When a message is received in a SIP application, the framework controller determines a state of application and parses the message to update application data by using corresponding handlers. The handlers for each state are specified in an input markup language model defined by a user externally via a Web service accessible component.