Method for improving penetration rate and stability of STUN-P2P through universal plug-n-play (UPnP)

Abstract

The invention discloses a method for improving penetration rate and stability of STUN-P2P through universal plug-n-play (UPnP). Port mapping request is sent to network address translation (NAT) through an UPnP port mapping client-side. If the port mapping request succeeds, port mapping successively established by the UPnP on the NAT is fed back to nodes. Established port mapping is transmitted to a STUN client-side to as to establish heartbeat message connection with an STUN server. If feedback data cannot be obtained, the STUN client-side is started to be connected with the STUN server to obtain ports. The nodes acquire external ports of the NAT from the position of the STUN client-side. The nodes are exchanged with peer nodes about external addresses and ports established on the NAT through an XML-based messaging and presence protocol (XMPP) or a session initiation protocol (SIP). The method for improving the penetration rate and the stability of the STUN-P2P through the UPnP has high efficiency of the UPnP and the penetrability of the STUN, enables connection success rate of the P2P to be improved and to be fast and stable, improves the stability of connection between network devices and users, thereby improving zero configuration of the nodes or using practical applicability of plug and play devices.

Description

technical field [0001] The invention belongs to the technical field of network multimedia. Background technique [0002] The basis of establishing a P2P (peer-to-peer network) connection is to establish the internal and external addresses (or port mapping) of the node in NAT (Network Address Translation), so that the node can receive connections initiated from outside the NAT. At present, the two mainstream P2P NAT port mapping establishment standards are: 1. UPnP (Universal Plug and Play) protocol; 2. STUN (UDP Simple Traversal of NAT) protocol. The UPnP protocol has the advantage of simple implementation. The network node connected to the back of the NAT can establish a specified port mapping on the NAT through the SOAP interface provided by the UPnP protocol, and obtain the external address and port of the mapping; because the port mapping is established at this time The process is realized through the internal network communication of the LAN, so the establishment spe...

AI Technical Summary

Problems solved by technology

The UPnP protocol has the advantage of simple implementation. The network node connected to the back of the NAT can establish a specified port mapping on the NAT through the SOAP interface provided by the UPnP protocol, and obtain the external address and port of the mapping; because the port mapping is established at this time The process is realized through the internal network communication of the LAN, so the establishment speed is fast and stable; but its disadvantage is that not all routers support the UPnP function, and the scope of application is limited

[0004]1. More than 20% of the NATs or firewalls cannot establish the internal and external address mapping of the node, that is, the P2P data link between the playback end and the network camera end cannot be established

[0005] 2. At present, the new factory home routers support and open the UPnP port mapping function by default. This function can enable the network devices in the home network to quickly establish stable internal and external address port mapping on the NAT through the UPnP function.

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