Unisys Corporation

Jerry S Bassett

Robert A Johnson

Duane J McCrory

Mark Steven Brandt

James J Leigh

Robert K Moulton

David George Maw

Gary Salamon

William Deck

Systems and methods enable a method including: providing a first system; generating data to be sent over a network link; determining a transport protocol that will be used to transmit data over the network communication link; negotiating connection services to be performed on data that will transmitted over the network communication link; sending a request to open a network communication link; sending a request to the connectivity services of the second system for credentials of the second system; receiving the credentials from the connectivity services module of the second system; verifying that the credentials match an authenticated computer system; opening a network connection between the first system and the second system when the second system's credentials have been verified by the connectivity services module of the first system; and transmitting the data to the second system according to the determining network protocol and negotiated connection services.

Systems and methods for network communications

A method, system, and computer program product specifies a communication intraconnect architecture that supports a pull model based data communication where data is sent to a receiver along with a memory address (a receiver buffer address or a reference to a pool manager or buffer pool) where the data is to be stored. CIA primitives are used to create nodes and dialog objects managed by send and receive IFEs. A logical dialog is established between corresponding send and receive dialog objects. A send dialog object includes a reference that identifies for the send IFE the corresponding receive dialog object in the receive IFE. The receive dialog object includes a reference that identifies for the receive IFE the corresponding send dialog object in the send IFE. Receive and send primitives are used to provide pull model data communication over a logical dialog. Receive with Buffer and Receive with Buffer Pool operations are provided. Multiple, full duplex, reliable virtual circuit connections can be provided for each node. Multiple dialog objects can reference a single node. Multiple outstanding CIA primitive operations are allowed on each dialog. Dialogs can handle byte stream or message oriented data Dialog operations and features further include scatter and gather support, Early-Far-End and Far-End send classes of service, automatic recurring receive option, partial sends and receives messages with substantially no restrictions on send/rcv lengths, and multiple dialog priorities. A user level management dialog is established to manage establishment of logical dialogs. Various dialog establishment services can be used. Buffer pool and pool manager operations provide address bound checking, buffer pool credits, low water mark notification, and data binding to flirter optimize data transfer performance.

Method system and computer program product for providing pull model data communication

A method, system, and computer program product specifies a communication intraconnect architecture that supports a pull model based data communication where data is sent to a receiver along with a memory address (a receiver buffer address or a reference to a pool manager or buffer pool) where the data is to be stored. CIA primitives are used to create nodes and dialog objects managed by send and receive IFEs. A logical dialog is established between corresponding send and receive dialog objects. A send dialog object includes a reference that identifies for the send IFE the corresponding receive dialog object in the receive IFE. The receive dialog object includes a reference that identifies for the receive IFE the corresponding send dialog object in the send IFE. Receive and send primitives are used to provide pull model data communication over a logical dialog. Receive with Buffer and Receive with Buffer Pool operations are provided. Multiple, full duplex, reliable virtual circuit connections can be provided for each node. Multiple dialog objects can reference a single node. Multiple outstanding CIA primitive operations are allowed on each dialog. Dialogs can handle byte stream or message oriented data. Dialog operations and features further include scatter and gather support, Early-Far-End and Far-End send classes of service, automatic recurring receive option, partial sends and receives messages with substantially no restrictions on send/rcv lengths, and multiple dialog priorities. A user level management dialog is established to manage establishment of logical dialogs. Various dialog establishment services can be used. Buffer pool and pool manager operations provide address bound checking, buffer pool credits, low water mark notification, and data binding to further optimize data transfer performance.

Method, system, and computer program product for establishing dialogs in

Method, system, and computer program product for intraconnect data

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Quakertown, PA, United States of America

Jerry S Bassett