1、學(xué)抖n糞：三堂丹糞9—衛(wèi)!!!一m位代日—j蝗!!一密罐：一專J名啷諺z碧碩士學(xué)位論文論文題目：墾!塑塹塑型工塑量墊型笪塹壅量塞堡學(xué)生姓名學(xué)號指導(dǎo)教師學(xué)科專業(yè)研究方向論文提交日期張維風(fēng)張代遠(yuǎn)副教授計算機(jī)應(yīng)用技術(shù)計算機(jī)在通信中的應(yīng)用二00七年三月南京郵電大學(xué)碩士研究生學(xué)位論文AbstractAbstractThetechnologyofPeertoPeer(P2P)networkisakindoftechnologyabouttheove

2、rlaynetworkswhichisconstructedonthebasisoftheIntemetnowanditsoriginalpurposeisfilesharingAtpresent，P2PhasbeenwidelyusedintheareaofDistributedcomputing，Collaboration，Resourcesearching&sharingandSOon，moreandmorepeoplebegin

3、topayattentiontoitAsthebasisofallkindsofP2Papplication，thetechnologyofP2Presourcesearchinghasbecomingaresearchhotspotnowbuttherealsoubiquitymanyproblemssuchas：ignorethestate：ofboRomnetworks；lackofconsiderationaboutthepee

4、rs’heterogeneity；unbalancedloadofresourceproviders；greatcostinmaintainingstatusinformationaboutnetworksetc，allaboveinfluencethequalityandefficiencyofresourcesearchinginsomedegreeThemaincontributionofthethesisis：domuchres

5、earchinresourcesearchingmechanismonP2Pnetwork，designandimplementaresourcesearchingmodelnameddualCAP(ChordAndPastryCAP)whichisbasedontheideaofDistributedHashTableThedualCAPmodelfullyconsiderestheboRomnetworksandalsothebad

6、influencebroughtbythepeers’heterogeneitySOitdelaminatenetworkandclassifiespeersaccordingtogeographicdistrict，peers’performanceandpeers’behavionIndualCAPmodel，peersthatbelongtodifferentnetworklayermaintaindifferentrouting

7、tableandtakedifferentroutingstrategyManystablepeersarepickedouttostoresharingresourcecooperativelyandallinformationaboutthestablepeerswhichstorethesamesharingresourceisrecordedinsomecrosslinklistsinordertobalancetheresou

8、rceprovider’Sload。Atlast，amathematicalmodelisbuilttodemonstratethedualCAPresourcesearchingmechanismisbetterthanChordandPastryinrespectofsearchingefficiencybalancingload，robustnessandexpansibilityKeywords：P2Presourcesearc