INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING APPARATUS, SERVER APPARATUS, INFORMATION PROCESSING METHOD AND PROGRAM

摘要

An information processing apparatus 1 includes a request packet transmitting part 11 that transmits a request packet requesting a transmission of a reply packet through a communication processing apparatus 2, a reply packet receiving part 12 that receives the reply packet, a port maintenance time detecting part 13 that detects a port maintenance time of the communication processing apparatus 2 on the basis of the received reply packet, and a request packet transmission control part 14 that controls the transmission of the request packet using a dichotomizing search request packet on the basis of whether or not the reply packet is received. A server apparatus 3 includes a request packet receiving part 31 that receives the request packet, a reply packet transmitting part 32 that transmits the reply packet, and a reply packet transmission control part 33 that controls the transmission of the reply packet on the basis of the received request packet.