短信辅助的移动对等系统NAT穿越

Short message aided NAT traversal for mobile P2P system

为了解决被NAT设备隔离的智能手机终端难以进行对等网络通信的问题,设计了短信辅助的ICE协议SMAICE。该协议利用手机短信可在终端间直达的特性,用短信辅助ICE协商过程,能够简化集结服务器功能并降低对服务器的要求。基于Android平台的系统设计、编程实现和测试结果表明:SMAICE交互过程简单,容易编程实现;常用软件的多次NAT穿越测试均获成功,因此该协议具有很高的NAT穿越成功率。

In order to resolve the problem that smart phone terminals isolated by NAT devices can not communicate through network in Peer-to-Peer model,a short message aided ICE protocol named SMAICE is proposed. Because short messages can be sent between smart phones directly,the protocol can help the negotiation procedure of ICE to simplify the function of rendezvous server and reduce the demands of the server. The design,program and testing of SMAICE based on Android plateform show that SMAICE has simple negotiation procedure and is easy to implement. Multiple times of NAT traversal tests with commonly used softwares are suceessful,which means that SMAICE has high success rate in NAT traversal.