Relay devices cooperating to distribute a message from same terminal to same server while session continues

A non-transitory computer-readable medium storing a relay program for causing a relay device relaying communication between an information processing terminal and an information processing device to perform procedure, the procedure comprising:

• when receiving from the information processing device response information for initial request information issued by the information processing terminal, extracting first session identification information for identifying a session established between the information processing terminal and the information processing device, and an address of the information processing device, from the received response information, and storing the extracted information and address in a first storage unit;
• transmitting the response information to the information processing terminal, and transmitting session supporting address information including the extracted first session identification information and address of the information processing device to at least one of other relay devices;
• extracting second session identification information, from request information for a second time or later received from the information processing terminal;
• and
• when the session supporting address information corresponding to the extracted second session identification information is not stored in the first storage unit, querying the at least one of the other relay devices for the session supporting address information corresponding to the second session identification information.

A relay method executed by a relay device that relays communication between an information processing terminal and an information processing device, the relay method comprising:

• when receiving from the information processing device response information for initial request information issued by the information processing terminal, extracting first session identification information for identifying a session established between the information processing terminal and the information processing device, and an address of the information processing device, from the received response information, and storing the extracted information and address in a first storage unit,
• transmitting the response information to the information processing terminal, and transmitting session supporting address information including the extracted first session identification information and address of the information processing device to at least one of other relay devices;
• extracting second session identification information, from request information for a second time or later received from the information processing terminal and
• when the session supporting address information corresponding to the extracted second session identification information is not stored in the first storage unit, querying the at least one of the other relay devices for the session supporting address information corresponding to the second session identification information.