The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 16, 2013
Filed:
Feb. 23, 2006
KE Tang, Beijing, CN;
Ke Tang, Beijing, CN;
Beijing Funshion Online Technologies Ltd., Beijing, CN;
Abstract
The present invention discloses a user device for implementing direct penetrating communication between a user device under a NAT and another user device under a different NAT and a method for the same. Detection message is sent to an auxiliary detecting device in an external network through a selected local port. Then the reply message from said auxiliary detecting device will be received and the NAT-translated NAT source port of said detection message can be obtained. By comparing the NAT source ports of a plurality of detection messages, it can be determined whether or not the selected port is a penetrated port. After that, the corresponding NAT source address and NAT penetrated port will be informed to another user device under a different NAT (also, the NAT penetrated port and NAT source port determined by said another user device will be received via said external-network device).