| 摘要 |
PROBLEM TO BE SOLVED: To provide a communication apparatus which can establish P2P communication even in a communication environment where a network is intricately constituted. SOLUTION: A communication apparatus includes a global address information acquiring section 101; an NAT setting request section 102; a WAN-side address information acquiring section 103; a local address information acquiring section 104; an address information notification section 105 for notifying first global address information, first WAN-side address information, and first local address information acquired to a communication partner; and an address information acquiring section 106 for acquiring second global address information, second WAN-side address information, and second local address information assigned to the communication partner. The communication apparatus of the invention determines a method by which P2P connection can be established based on the first and the second global address information, the first and the second WAN-side address information, and the first and the second local address information. COPYRIGHT: (C)2006,JPO&NCIPI
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