INFORMATION COMMUNICATION SYSTEM, INFORMATION COMMUNICATION METHOD, NODE DEVICE CONTAINED IN INFORMATION COMMUNICATION SYSTEM, AND RECORDING MEDIUM CONTAINING INFORMATION PROCESSING PROGRAM

摘要

It is possible to provide an information communication system and others in which a participation requesting node can acquire link information (IP address and the like) on the node device participating in an overlay network. The information communication system includes an overlay network formed by participation of a plurality of node devices. One node device (B) contained in the system stores node information indicating a node device as a candidate of an information transfer destination. When the node device (B) receives a participation message indicating a request for participating in the overlay network from a participation requesting node (Z), the node device (B) transfers the participation message to the node device (E) of the transfer destination in accordance with the node information on the participation requesting node (Z) and transmits an existence confirmation message including the node information on the participation requesting node to node devices (A, C) other than the transfer destination based on the node information on the participation requesting node (Z). Upon reception of the existence confirmation message, a response message is transmitted to the participation requesting node.