| 摘要 |
A communication apparatus according to the present invention includes a global address information acquiring section for acquiring first global address information; a WAN-side address information acquiring section for acquiring first WAN-side address information assigned to its own communication apparatus; a local address information acquiring section for acquiring first local address information; an address information notification section for notifying the first global address information, the first WAN-side address information, and the first local address information to a communication partner apparatus; and an address information acquiring section for acquiring second global address information, second WAN-side address information, and second local address information assigned to the communication partner apparatus. The communication apparatus determines a method by which P2P connection can be established based on the first and second global address information, the first and second WAN-side address information, and the first and second local address information.
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