Method and communication unit for communicating between communication apparatus

A communication unit, located in a communication apparatus in a network, comprising:

• a first interface, adapted to receive a data packet sent by an application of the communication apparatus to which the first interface belongs, and send a data packet from the network to the application of the communication apparatus to which the first interface belongs;
• an encoding and decoding module, adapted to encode data sent to the network through the first interface and decode data sent to the first interface;
• a second interface adapted to send encoded data to the network and send the data received from the network to the encoding and decoding module;
• a first communication module, connected between the first interface and the encoding and decoding module and adapted to control information and mode of communication between the communication apparatus to which the first communication module belongs and a server in the network;
• a second communication module, connected between the first interface and the encoding and decoding module and adapted to control information and mode of communication between the communication apparatus and another communication apparatus connected with the communication apparatus over a P2P connection.