Proxy server selecting server and proxy server

In a storage medium having recorded a program executable by a proxy server selecting server connected to a network having a computer node (referred to as a server) serving as a server for providing service, a computer node (referred to as a client) serving as a client for receiving said service, and plural computer nodes (referred to as proxy servers) serving as proxy servers for relaying an access from said client to said server connected thereto, said program when executed causes said proxy server selecting server to perform the steps of:

• storing in an address storing portion a domain name and a network address of each of the computer nodes in the network to be managed;
• storing location information of each of said proxy servers in a memory provided in said proxy server selecting server;
• selecting one of the proxy servers according to a predetermined selecting rule, based on geographic location information of said client and the stored content of said memory, when receiving from said client an inquiry request for requesting a network address of a server corresponding to a domain name of said server, the geographic location information of said client being attached to said inquiry request;
• and
• notifying said client of a network address of said proxy server selected by said proxy server selecting portion in place of the network address of said server.

A network system, comprising:

• a network;
• a computer node (referred to as a server) connected to said network and serving as a server for providing service;
• a computer node (referred to as a client) connected to said network and serving as a client for receiving the service;
• plural computer nodes (referred to as proxy servers) connected to said network and each serving as a proxy server for standing as a proxy for an access to said server by said client;
• and
• a proxy server selecting server that is a computer node (referred to as a proxy server selecting server) connected to said network, having a memory for storing location information of each of said proxy servers, and for selecting a most approximate proxy server to said client by referring to said location information in response to an inquiring request having geographic location information of a client and a logical node name of the server from which said client requires the service, and said proxy server selecting server notifying said client of a network address of said selected proxy server in place of the network address of said server.