Patent ID: 7676593
Filing Date: 2010-03-09
Classification: H04L

Abstract:
1. A network relay apparatus connecting a server terminal and a client terminal, the network relay apparatus comprising: a transmitter that transmits first and second downstream packets received from the server terminal to the client terminal and transmits first and second upstream packets received from the client terminal to the server terminal, the second downstream packet being received after the first downstream packet, the second upstream packet being received after the first upstream packet, the first and second upstream packets respectively comprising first and second acknowledgement information according to the first and second downstream packets; a memory that stores the first acknowledgement information; and a data modifier that modifies the second upstream packet to change the second acknowledgement information into the first acknowledgement information stored in the memory, wherein said transmitter transmits the second upstream packet modified by the data modifier to the server terminal after the first acknowledgment information was transmitted to the server terminal along with the first upstream packet, and wherein each of the first and second downstream packets received by the network relay apparatus contains a non-zero payload.