| 摘要 |
A server system provides a client system with access to a number of services. For each service, if a given service provider is overloaded (or if the client is unable to contact that provider), the client can contact any other of the service providers capable of providing the requested service. The server system provides information to the client system identifying a list of services that the server system provides. For each service in the list of services, the information includes a service name identifying the service, and at least one unique port identifying each service provider for that service so that one service name can be used in accessing the multiple service providers that provide the desired service. The request from the client includes a service name identifying the desired service provided by the server system, and includes at least one port corresponding to a service provider that provides the desired service, the port being selected from the ports provided by the server system.
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