Computerized Methods of Preserving State Information and Preserving State Information Computer Systems

摘要

A method and system are provided for preserving state in a computer communicating over a network, such as the World Wide Web (WWW), using a stateless non-conservation protocol, for example HTTP. The conversation of a client requesting a service from the server is performed by performing the service, identifying all connection phrases (hyperlinks) in the output from the service, and repeatedly inserting state information in all identified connection phrases in the output sent to the client. State is preserved during the process. Status information is inserted by the server into the client and can be transmitted. Optionally, dynamically downloadable program code may be used to insert status information at the client. According to a predetermined criterion, the additional feature enables filtering and / or addition of highlink and data output from the service. In order to call the GGI translator program with the identified connection phrase and the status information passed as an argument, the status information can be inserted by changing the identified connection phrase that requires the HTML file. Status information can also be inserted by changing the identified linking phrase that calls the GGI program with the identified linking phrase and the status information passed as an argument, the inserting step being performed by the GGI program. Optionally, the identified linking phrase invoking the GGI program can be modified to call the GGI translator program with the identified linking phrase, a factor counter indicating a number of arguments associated with the GGI program, and status information passed as an argument. Here, the insertion is performed by the conversion program.