Patent ID: 8239525
Filing Date: 2012-08-07
Classification: H04L

Abstract:
1. A server apparatus which acquires information from an information source in response to a request received from a client apparatus and transmits the acquired information to said client apparatus, comprising: a reception section for receiving a request from said client apparatus; a determination section for determining whether a state of said information source satisfies a predetermined condition using last communication contents; and a transmission section which, if, as a result of said determination, the state of said information source does not satisfy the predetermined condition, suspends a response to said client apparatus, while, if the state of said information source satisfies the predetermined condition, acquires information corresponding to said request from said information source as a response to said client apparatus, and transmits the acquired information to said client apparatus; wherein said determination section repeatedly determines whether information of said information source is updated by transmitting a plurality of communications between the server apparatus and the information source; and said transmission section, when, as a result of said determination, information of said information source is not updated, suspends a response to said client apparatus until a set time elapses, and when the set time elapses, transmits information indicating that the information corresponding to said request is not updated to said client apparatus as a response to said client apparatus.