Patent ID: 8930546
Filing Date: 2015-01-06
Classification: H04L

Abstract:
1. A peer-to-peer (P2P) connection system comprising: a user terminal configured to receive, from a Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (STUN) server, Network Address Translation (NAT) type information for a plurality of connectable networks; a location server configured to store connection information for connecting the user terminal to a second user terminal using a P2P connection through the plurality of connectable networks; and a relay server to which the user terminal transmits a registration packet to register the connection information through the relay server, the registration packet comprising the NAT type information and a private address of the user terminal, the connection information comprising a public address of the user terminal, the private address of the user terminal, the NAT type information and an address of the relay server, the relay server being configured to extract the public address of the user terminal from the registration packet and transmit, to the location server, the public address of the user terminal, the private address of the user terminal, the NAT type information and the address of the relay server, thereby registering the connection information in the location server.