Method for ensuring the availability of a service proposed by a service provider
First Claim
1. Method for ensuring the availability of a service proposed by a service provider in a data transmission system including at least one user workstation connected to the Internet network, a plurality of content servers able to furnish services provided by service providers in response to service requests from said user workstation, and a proxy server interconnected between said Internet network and said content servers for receiving said service requests from said user workstation and transmitting each one to a content server able to provide the requested service;
- said method including the following steps when said proxy server receives a service request, looking in a context table for an entry corresponding to a Uniform Resource Locator (URL) defined in said service request in order to determine the content server able to provide the requested service, appending a service availability request to said service request before sending said service request from said proxy server to said determined content server, appending a service availability token to the reply provided by said determined content server before sending said reply from said determined content server to said proxy server, removing said service availability token from said reply upon reception thereof by said proxy server, and updating said context table in said proxy server before sending said reply to said user workstation by using information contained in said service availability token.
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Accused Products
Abstract
Method for ensuring the availability of a service proposed by a service provider in a data transmission system. The method includes looking in a context table for a Uniform Resource Locator (URL) defined in a service request in order to determine the server able to provide the requested service, appending a service availability request to the request before sending the request to the server, appending a service availability token to the reply provided by the server before sending the reply to the proxy, removing the service availability token from the reply upon reception thereof by the proxy, and updating the context table in the proxy before sending the reply to the user workstation by using information contained in the service availability token.
52 Citations
12 Claims
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1. Method for ensuring the availability of a service proposed by a service provider in a data transmission system including at least one user workstation connected to the Internet network, a plurality of content servers able to furnish services provided by service providers in response to service requests from said user workstation, and a proxy server interconnected between said Internet network and said content servers for receiving said service requests from said user workstation and transmitting each one to a content server able to provide the requested service;
said method including the following steps when said proxy server receives a service request, looking in a context table for an entry corresponding to a Uniform Resource Locator (URL) defined in said service request in order to determine the content server able to provide the requested service, appending a service availability request to said service request before sending said service request from said proxy server to said determined content server, appending a service availability token to the reply provided by said determined content server before sending said reply from said determined content server to said proxy server, removing said service availability token from said reply upon reception thereof by said proxy server, and updating said context table in said proxy server before sending said reply to said user workstation by using information contained in said service availability token. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
Specification