Information processing apparatus and method, program, and recording medium

An information processing method for use with an information processing apparatus for performing communication with another information processing apparatus via a network, the information processing method comprising the steps of:

• instructing a transmission of a first packet in order to obtain a response from the other information processing apparatus;
• generating a first time stamp containing a time when the first packet generated on the basis of instructions in the instruction step is sent out to the network;
• generating a second time stamp containing a time when a second packet that is transmitted as a response for the first packet from the other information processing apparatus is obtained from the network;
• and
• computing a round trip delay between the information processing apparatus and the other information processing apparatus on the basis of the first and second generated time stamps.

A computer-executable program for enabling an information processing apparatus for performing communication with another information processing apparatus via a network to perform information processing, the program comprising the steps of:

• instructing a transmission of a first packet in order to obtain a response from the other information processing apparatus;
• generating a first time stamp containing a time when the first packet generated on the basis of instructions in the instruction step is sent out to the network;
• generating a second time stamp containing a time when a second packet that is transmitted as a response for the first packet from the other information processing apparatus is obtained from the network;
• and
• computing a round trip delay between the information processing apparatus and the other information processing apparatus on the basis of the first and second generated time stamps.

An information processing apparatus for performing communication with another information processing apparatus via a network, the information processing apparatus comprising:

• an instruction section instructing a transmission of a first packet in order to obtain a response from the other information processing apparatus;
• a first generation section generating a first time stamp containing a time when the first packet generated on the basis of instructions by the instruction section is sent out to the network;
• a second generation section generating a second time stamp containing a time when a second packet that is transmitted as a response for the first packet from the other information processing apparatus is obtained from the network;
• and
• a computation section computing a round trip delay between the information processing apparatus and the other information processing apparatus on the basis of the first and second generated time stamps.