Unisys Corporation

Gary Salamon

Anthony Narisi

Susan Mary Jennion

David George Maw

Lois Bridgham Coyne

Michael T Kain

Jerry S Bassett

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

Methods and apparatus that enable network applications executing on respective directly interconnected computer systems to communicate at high speed, with low latency, over the interconnection therebetween such that both systems may use their native mechanisms to communicate with each other without change in those mechanisms, rather than over conventional network communication paths such as Ethernet. Communication between applications in co-resident, closely coupled processing environments is provided by replacing the conventional TCP transport layer and the conventional IP network layer with a reliable messaging subsystem (&ldquo;MSS&rdquo;) for data transfers between the closely coupled systems which provides an interface which is independent of the communication protocol of the interconnect and a virtual transport layer (&ldquo;VTL&rdquo;) which simulates a known transport layer protocol, such as TCP/IP, to the network applications. MSS is a system interconnect independent messaging transport which presents to its users many different delivery and notification mechanisms for the transfer of both control and data information between different heterogeneous environments, while VTL uses the MSS connection to provide a consistent, interconnect independent interface to the session layer.

Virtual transport layer interface and messaging subsystem for high-speed communications between heterogeneous computer systems

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Malvern, PA, United States of America

Gary Salamon