Patent ID: 7917632

Claim:
A P2P (peer-to-peer) proxy server participating in a P2P infrastructure and connecting to one or more legacy apparatuses, comprising: a proxy data communication unit acquiring a reception message from one of the P2P proxy clients transmitted through the P2P infrastructure or transmitting a transmission message to the infrastructure; a legacy apparatus state management unit generating a message for advertising contents stored in the legacy apparatuses and, if the reception message is a message for requesting for sharing specific contents, generating a message for sharing the specific contents; a message management unit parsing the reception message acquired through the proxy data communication unit to transmit the reception message to the legacy apparatus state management unit or inversely parsing the message generated by the legacy apparatus state management unit to generate the transmission message and transmitting the transmission message to the proxy data communication unit; and a legacy apparatus driver connecting to the legacy apparatuses and installing applications and driver programs in the legacy apparatuses to enable the legacy apparatuses to relay messages to and from the P2P proxy clients to enable supporting data communication between the legacy apparatuses and the legacy apparatus state management unit, wherein the legacy apparatuses have no built-in P2P middleware.