Communication between client and server computers via http, method, computer program product and system

US7606901B2 · kind B2 · utility

Assignee

• SAP AG · DE

Inventors

• Juergen Heymann · Walldorf, DE
• Udo Offermann · Schallstadt, DE
• Petr Zdrahal · Wiesloch, DE

Key dates

• Filing date: Jun 13, 2001
• Grant date: Oct 20, 2009
• Expiry date: Nov 20, 2022

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L69/329
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A client computer and a server computer communicate via HTTP. The client computer uses a standard HTTP-browser. Substantially simultaneously with establishing a session by allocating a resource at the server computer, the server computer sends a termination instruction to the browser. The instruction remains unexecuted in the browser during the whole session. In the event that the server computer terminates the session (such as upon unloading the instruction from the browser), the browser causes the server computer to de-allocate the resource.