網絡數據包的過濾與解包

論文字數:16179,頁數:38  有開題報告，任務書

摘    要

 隨著手機上網的不斷普及,手機無線業務的不斷拓展, 湖南移動WAP總網關有平均高達200G/天的網絡數據流量。為了保障WAP網絡運行效率,節省人力資源成本,現在需要通過對流經WAP總網關的海量數據包進行過濾分析從而主動偵測。
 本文通過對湖南省長株潭和其他地區網絡流量基礎數據的提取和分析，在研究學習WAP協議棧5層結構的基礎上，基于winpcap庫函數，采用tcpdump過濾器語言，按照協議規范區分不同類型數據包，然后對過濾出的數據包進行解包，提取出時間點、延遲等關鍵字段，存入數據庫進行分析。
 該方案有效降低了對海量數據進行實時統計分析的復雜度，在設備性能開始下降前就能檢測到問題，早做防范，保障各地區WAP網絡的高效運行。

關鍵詞：WAP網絡；WAP協議規范；過濾；解包

The filter and decode of WAP Network data package

Abstract

 With the WAP phone become more popular, and wireless business expand faster, The network data flow of Hunan Mobile WAP gateway reach an average as high as 200G/ days. To protect the operating efficiency of WAP network, and save cost in manpower resources, need detect and analysis the WAP Gateway, filter and dissect the massive data packet which flow through the WAP Gateway right now.
 This paper extract and analyze the data on the basis of ChangZhuTan and other areas of Hunan Province, Study the WAP protocol stack on basis of five-storey structure, on base of the winpcap function library, use tcpdump filter language, distinguish different types of data packets according to the protocol specification, Then unpack the filtered data packets, extract its keyword of time, delay and so on, stored in the database for analysis at last.
 The solution effectively lowers the complexity of the analysis in statistic mass of data real-time, detect problem before the equipment performance starting to decline, and make precautions to protect efficient operation of every region’s WAP network.

Key Words： WAP Network; WAP Specification; Filter; Decode

目    錄
1 緒論 1
1.1 課題背景及目的 1
1.2 國內外研究狀況 2
1.3 論文構成及研究內容 3
2 WAP網絡的流量統計分析 4
2.1 湖南省長株潭地區 4
2.1.1 長株潭地區網關流量數據表 4
2.1.2 長株潭地區網關流量圖 5
2.2 湖南省其它地區 7
2.2.1 其它地區網關流量數據表 7
2.2.2 長株潭地區網關流量圖 9
2.3 流量統計小結 11
3 WAP網絡協議棧的結構分析 12
3.1 WAP協議棧的結構 12
3.2無線應用環境WAE 13
3.2.1 WAE應用要求 13
3.2.2 WAE體系結構概述 14
3.2.3 WAE模型 14
3.2.4 WAE組成 16
3.3無線會話協議WSP 16
3.3.1 WSP體系結構概述 17
3.3.2 WSP協議數據單元結構 18
3.4無線事務協議WTP 21
3.4.1 WTP特征 21
3.4.2 WTP事務級別 22
3.5無線傳輸安全層WTLS 23
3.6無線數據報協議 24
4 WAP網絡數據包的過濾與解包 25
4.1 數據包過濾語言 25
4.2 數據包解析 26
4.3 數據包結構體源碼示例 27
結論 30
致謝 32
參考文獻 33