Abstract: The embodiment of the present invention provides a method for establishing P2P connection, comprising the steps of: a first terminal initiating connection sends a message to a second terminal to be connected, wherein the message contains the address of the first terminal; the second terminal reads the address of the first terminal initiating connection upon receiving the message, and initiates a P2P connection to the address of the first terminal. The embodiment of the present invention also provides another method for establishing P2P connection, through which both UDP P2P connection and TCP P2P connection can be established.

Abstract: The present invention discloses a system and method for data communication. In the system and method for data communication, a part of communication peers in the communication system are assigned as super peers, and each super peer forwards message according to its route table. When a communication peer logs in the system, network information of the logged communication peer is saved in a super peer which is logically closest to the logged communication peer through messages forwarded among every super peer. And when an origination communication peer searches for a destination communication peer, the network information of the destination communication peer is saved in a super peer which is logically closest to the destination communication peer through the message forwarded among every super peer in super peer layer.

Abstract: The present invention discloses a system and method for data communication. In the system and method for data communication, a part of communication peers in the communication system are assigned as super peers, and each super peer forwards message according to its route table. When a communication peer logs in the system, network information of the logged communication peer is saved in a super peer which is logically closest to the logged communication peer through messages forwarded among every super peer. And when an origination communication peer searches for a destination communication peer, the network information of the destination communication peer is saved in a super peer which is logically closest to the destination communication peer through the message forwarded among every super peer in super peer layer.

Abstract: The embodiment of the present invention provides a method for establishing P2P connection, comprising the steps of: a first terminal initiating connection sends a message to a second terminal to be connected, wherein the message contains the address of the first terminal; the second terminal reads the address of the first terminal initiating connection upon receiving the message, and initiates a P2P connection to the address of the first terminal. The embodiment of the present invention also provides another method for establishing P2P connection, through which both UDP P2P connection and TCP P2P connection can be established.