Apparatus and method for providing multimedia streaming service by using point-to-point connection

PURPOSE: A device and a method for multimedia streaming using a P2P(Peer-to-Peer) method are provided to carry out a streaming service of the multimedia data by using a client receiving the data once as a temporary server for a client group including the client. CONSTITUTION: The client(302) comprises a streaming receiving daemon(305) and a cooperative caching daemon(303). When the client(302) requests the video data, the client(302) searches that one client included in the client group of the client(302) stores the video data. If one of the clients does not store the video data, the client(302) receives the video data from a server(301). If one of the clients stores the video data, the client(302) requests the video transmission to the cooperative caching daemon(303) of the corresponding client, and the streaming receiving daemon(305) receives the video data. If each client(302) receives the video data, the client(302) temporarily stores the video data in a local disk(307) of the client(302), and transmits a list of the video data to the server(301).