Patent ID: 8230492
Filing Date: 2012-07-24
Classification: H04L

Abstract:
1. A network device for communicating with a client apparatus and a proxy server connected via a network, the network device comprising: at least one processor and a memory; a first receiving unit which receives an instruction from said proxy server for restricting a response to a search request sent from said client apparatus; a transmission unit which transmits information of said network device to said proxy server for said proxy server to respond to the search request sent from said client apparatus as a substitution for said network device; a control unit which restricts response to a search request if said network device receives the search request by multicast after said first receiving unit receives the instruction from said proxy server, and responds to a search request if said network device receives the search request by unicast after said first receiving unit receives the instruction from said proxy server; a second receiving unit which receives canceling information for canceling the restriction on response to said search request; and a cancel unit which cancels the restriction on response to said search request when said canceling information is received, wherein said canceling information is halt information transmitted before said proxy server halts.