基于P2PSIP的Softphone系統(tǒng)研究.pdf

1、中南民族大學碩士學位論文基于P2PSIP的Softphone系統(tǒng)研究姓名：謝瑾申請學位級別：碩士專業(yè)：計算機應用技術指導教師：宋中山20080505基于P2PSIP的Softphone系統(tǒng)研究IIABSTRACTThetechnologyofSIPisonetrendofdevelopmentinVoIPbutithasoneofhardestproblems:theframewkonCSmakeshardloadbalanceince

2、ntralservercan’tassurethequalityofcommunicationinapplication.AfteranalyzingthetechnologyofP2PthereisagoodmethodtosolvetheproblembycombiningtheP2PSIP.Itcanimproveselfmanagementextensibilityrobustnessofthewk.Themostdomesti

3、cfeignteachingstudyinginstitutionsstudyVoIPonP2PSIPdeeply.HowevermanyresearchesrealizationswereachievedbyChdonUNIX(Linux).SotheauthpresentedaSoftphonesystemfrealizingsomefunctionbasedonP2PSIPbyKademliaonWindows.Thispaper

4、analyzedthetopologystructureofP2Pindetail.IntheaspectofSIPmessagetheauthanalyzedtheprotocolcombinedwiththeSIPsoftwareofXLitewhichbasedonCSstructurefstudyingtherealizationofSIP.AfteranalyzingthedraftP2PSIPprotocoltheauthc

5、omparedsomeDHTalgithms.AstheresultofthatKademliaisbasedonsymmetricalXmetricithassomeadvantagessuchas:requestsofsearchhaveavailablemessagesdecreasingthedistancebetweensourcenoteaimednotesoon.SothattheauthedKademliaastheal

6、githmwhichusedatP2Pinthissystem.MeanwhileitresearchedthoseKademliaproceduresinEMULEwhichrealizesKademliaalgithmsuccessfully.AtlastitpresentedSoftphonesystem.ThesystemusedKademliafconstructingP2POverlaytheOverlayincludeds

7、omesupernodesbootstrapnodesregeditnodes.TransmitingSIPmessageontheOverlay.Thesystemhadgoodperfmanceswhichweretestedinextensibilityeffienceofupdatingheterogeneityfaulttolerant.KeyWds：PeertoPeerwkSIPprotocolP2PSIPprotocolP