摘要
数据包的构造与解析是协议一致性测试中的关键技术。在对协议一致性测试原理、特点和流程进行分析的基础上,定义协议一致性测试中的相关概念,建立协议一致性测试中的相关规则,提出一种数据包的构造、发送、捕获和解析的方法,设计数据包构造、发送、捕获和解析算法并对其进行分析。数据包构造算法可依据协议标准规定的消息格式,为每个数据包字段依次赋值;数据包发送算法是通过网络适配器,根据待发送数据包的名称、类型和发送序列,实施数据包的发送;数据包捕获与解析算法是通过网络适配器捕获原始数据包,设置并编译过滤规则,对捕获到的数据包按照协议标准说明进行解析,与预期构造的数据包进行比对。由于设置了过滤规则,有针对性地捕获数据包,因而,提高了数据包的捕获准确率。
Encapsulate and decode packet is the key technique of protocol conformance testing. By analyzing the principle, characteristic and flow of protocol conformance testing, pertinent conceptions and formulas of protocol conformance testing were defined, and a method on encapsulate, send, capture and decode packet was brought forward, and arithmetic of encapsulate, send, capture and decode packet was designed and analyzed. According to protocol standard＇ s message format, the arithmetic of encapsulate packet appends field to the packet by the systematic arrangement of field; According to the name, type and send-sequence of packet under send, the arithmetic of send packet sends the packets via network adapter; the arithmetic of capture and decode packet captures the original packet via network adapter, sets up and compiles the filter formula, decodes the captured packets on the protocol standard specification, then compares with expected packet. Owing to installed filter formula, targeted packets are captured, thus accuracy of packets captured can be improved.
出处
《西南科技大学学报》
CAS
2013年第4期93-101,共9页
Journal of Southwest University of Science and Technology
基金
技术基础项目(7211019)
解放军电子工程学院科研基金项目(KY11026)
关键词
协议测试
一致性测试
数据包
字段
网络适配器
Protocol testing
Protocol conformance testing
Packet
Field
Network adapter conformance testing
