International Business Machines Corporation

Stephen M Fontes

Erik John Burckart

Craig Andrew Lanzen

William Thomas Newport

Subbarao K Meduri

James Lee Van Oosten

Robert H High

John Raithel Hind

Marcia L Stockton

Andrew Dwight Dingsor

Thomas Narten

Erik Burckart

The present invention is a method, system and apparatus for configuring a client-side communications protocol stack. In a method of the invention, a mapping can be consulted to determine a set of client-side protocol stack components which correspond to a set of protocol stack components in a server side protocol stack instance. Subsequently, a listing can be created of the determined set of client-side protocol stack components. Finally, the listing can be published for access by externally disposed client computing processes. Preferably, the listing can be reversed. Also, the consulting step further can include determining at least one attribute to be applied to at least one of the client-side protocol stack components when enabling a client-side protocol stack to interoperate with the server-side protocol stack instance.

Server-side protocol configuration of accessing clients

A method for configuring a client-side communications protocol stack includes a mapping to be consulted to determine a set of client-side protocol stack components which correspond to a set of protocol stack components in a server side protocol stack instance. Subsequently, a listing can be created of the determined set of client-side protocol stack components. Finally, the listing can be published for access by externally disposed client computing processes. The listing can be reversed. Also, the consulting step further can include determining at least one attribute to be applied to at least one of the client-side protocol stack components when enabling a client-side protocol stack to interoperate with the server-side protocol stack instance.

A method for augmenting a hierarchy of layered applications and corresponding protocols can include applying a discrimination algorithm to a selection process in which a particular application/protocol layer in a listing of adjacent application/protocol layers is selected to receive traffic flowing through the hierarchy. A new application/protocol layer is inserted adjacent to the particular application/protocol layer in the hierarchy. Also, a new application/protocol layer is added to the listing, and the discrimination algorithm is replaced with another discrimination algorithm programmed to consider the new application/protocol layer during the selection process. Each of the steps of performing the inserting, adding and replacing steps are performed without decoupling or disabling other applications and protocols in the hierarchy.

Unobtrusive port and protocol sharing among server processes

In a Java-based environment, a dynamic proxy runtime provides a client with the ability to asynchronously invoke an interface method, thereby unblocking the client and allowing it to perform other tasks while waiting for results to be returned from the runtime. The original interface is not redefined nor is the real target object implementation modified. Rather, the runtime defines rules which the client employs to define an additional asynchronous interface to supplement the original interface.

System and method for asynchronously invoking dynamic proxy interface using supplemental interfaces

In a hierarchy of layered applications and corresponding protocols, a port and protocol sharing method is disclosed. Traffic is received over a single shared logical port, and the traffic is routed to an interlayer communications process disposed between two layers in the hierarchy. A discrimination algorithm is applied to select a particular application/protocol layer in a higher one of the two layers to which the traffic is to be routed. The traffic is routed to the selected particular application/protocol layer. An additional application/protocol layer is added to the hierarchy. The discrimination algorithm is replaced with another discrimination algorithm program to consider the additional application/protocol layer during the selection process. The additional application/protocol layer is considered in the selecting step. When selected, the traffic is routed to the additional application/protocol layer. The adding and replacing steps are performed without decoupling or disabling other applications and protocols in the hierarchy.

A method of producing a blended SYN cookie can include identifying within a SYN packet a source network address and desired communications session parameters. Subsequently, an index value into a table of pre-configured sets of communications session parameters can be retrieved. Notably, the index value can reference one of the sets which approximates the desired communications parameters. A hash value can be computed based upon the source network address, a constant seed and current date and time data. Finally, the computed hash value can be combined with the index value, the combination forming the blended SYN cookie.

Blended SYN cookies

A method and apparatus in a data processing system for binding a plurality of server daemons to a destination address and port. A request for a connection from a client is routed using a destination address. A server daemon within the plurality of server daemons is selected to form a selected server daemon. The request is routed to the selected server daemon by changing the destination address to a server address for the selected server daemon. When a response is returned, source address in the response is changed to the original destination address.

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Morrisville, NC, United States of America

Stephen M Fontes