Communication system, intermediate device, communication method, and program

Abstract

A communication system includes a first intermediate deviceA and a second intermediate deviceB, in which the first intermediate device includes a buffer management unitthat determines a buffer size based on delay information and secures a buffer, a transfer unitthat, when data to be transferred to a second deviceis smaller than a credit of the second intermediate device, transfers a request including the data to the second intermediate device, and a generation unitA that generates a pseudo-response to the request and returns the pseudo-response to the first device, and the second intermediate device includes a buffer management unitthat determines a buffer size based on the delay information and secures a buffer, a transfer unitthat transfers the request to the second device and stores the request in the buffer to update the credit of its own device, and a discarding unitB that discards a response received from the second device, deletes the request stored in the buffer, and updates the credit.