Information processing system, tunnel communication device, tunnel communication method, and program

A tunnel communication device comprising:

• a peer-to-peer communication setup unit that sets up a peer-to-peer communication with a device as a communication destination;
• and
• a tunnel communication unit that makes a tunnel communication through a path of the peer-to-peer communication set up by the peer-to-peer communication setup unit,
• wherein the tunnel communication unit encapsulates a packet from an information processing device as a communication source, transmits the encapsulated packet through the path of the peer-to-peer communication, and decapsulates the encapsulated packet transmitted from the device as the communication destination through the path of the peer-to-peer communication, and
• wherein the tunnel communication unit encapsulates all packets transmitted from the information processing device as a communication source and transmits the encapsulated packets through the path of the peer-to-peer communication,
• the tunnel communication device further comprising:
• a switching unit that switches a mode between a tunnel mode in which the information processing device as a communication source makes a tunnel communication using the tunnel communication unit and a normal mode in which the information processing device as a communication source does not make the tunnel communication;
• and
• an address acquisition controlling unit that controls the information processing device as a communication source to perform an address acquiring process, the process to acquire an address of a local area network which the device as a communication destination belongs to, when the switching unit switches the mode from the normal mode to the tunnel mode.

A tunnel communication method comprising:

• a peer-to-peer communication setup step that sets up a peer-to-peer communication with a device as a communication destination;
• and
• a tunnel communication step that makes a tunnel communication through a path of the peer-to-peer communication set up in the peer-to-peer communication setup step,
• wherein the tunnel communication step is to encapsulate a packet transmitted from the information processing device as a communication source, transmit the encapsulated packet through the path of the peer-to-peer communication, and decapsulate the encapsulated packet transmitted from the device as a communication destination through the path of the peer-to-peer communication, and
• wherein the tunnel communication step is to encapsulate all packets transmitted from the information processing device as a communication source and transmits the encapsulated packets through the path of the peer-to-peer communication,
• the tunnel communication method further comprising:
• a switching step that switches a mode between a tunnel mode in which the information processing device as a communication source makes a tunnel communication using the tunnel communication unit and a normal mode in which the information processing device as a communication source does not make the tunnel communication;
• and
• an address acquisition controlling step that controls the information processing device as a communication source to perform an address acquiring process when the switching unit switches the mode from the normal mode to the tunnel mode.

A computer program product embodied on a non-transitory computer readable medium which, when executed by a computer, cause the computer to execute:

• a peer-to-peer communication setup step that sets up a peer-to-peer communication with a device as a communication destination;
• and
• a tunnel communication step that makes a tunnel communication through a path of the peer-to-peer communication set up in the peer-to-peer communication setup step,
• wherein the tunnel communication step is to encapsulate a packet transmitted from the information processing device as a communication source, transmit the encapsulated packet through the path of the peer-to-peer communication, and decapsulate the encapsulated packet transmitted from the device as a communication destination through the path of the peer-to-peer communication, and
• wherein the tunnel communication step is to encapsulate all packets transmitted from the information processing device as a communication source and transmits the encapsulated packets through the path of the peer-to-peer communication,
• the tunnel communication method further comprising:
• a switching step that switches a mode between a tunnel mode in which the information processing device as a communication source makes a tunnel communication using the tunnel communication unit and a normal mode in which the information processing device as a communication source does not make the tunnel communication;
• and
• an address acquisition controlling step that controls the information processing device as a communication source to perform an address acquiring process when the switching unit switches the mode from the normal mode to the tunnel mode.