java_sockets编程

java_sockets编程

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时间:2019-03-07

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1、AgendaNetworkProgrammingandJavaSocketsIntroductionElementsofClientServerComputingNetworkingBasicsUnderstandingPortsandSocketsJavaSocketsRajkumarBuyyaImplementingaServerGridComputingandDistributedSystems(GRIDS)LaboratoryImplementingaClientDept.ofComput

2、erScienceandSoftwareEngineeringSampleExamplesUniversityofMelbourne,AustraliaConclusionshttp://www.cs.mu.oz.au/~rajorhttp://www.buyya.com12InternetApplicationsServingLocalIntroductionandRemoteUsersRecentlyInternetandWWWhaveemergedasPCclientglobalubiquitous

3、mediaforcommunicationandchangingthewayweconductscience,engineering,andcommerce.InternetTheyalsochangedthewaywelearn,live,Serverenjoy,communicate,interact,engage,etc.ItLocalAreaNetworkappearslikethemodernlifeactivitiesaregettingcompletelycenteredaroundtheInt

4、ernet.PDA34IncreaseddemandforInternetInternet&WebasadeliveryVehicleapplicationsTotakeadvantageofopportunitiespresentedbytheInternet,businessesarecontinuouslyseekingnewandinnovativewaysandmeansforofferingtheirservicesviatheInternet.Thiscreatedahugedemandfor

5、softwaredesignerswithskillstocreatenewInternet-enabledapplicationsormigrateexisting/legacyapplicationsontheInternetplatform.Object-orientedJavatechnologies—Sockets,threads,RMI,clustering,Webservices--haveemergedasleadingsolutionsforcreatingportable,efficien

6、t,andmaintainablelargeandcomplexInternetapplications.56ElementsofC-SComputingNetworkingBasicsApplicationsLayerTCP/IPStackaclient,aserver,andnetworkStandardappsHTTPFTPstTelnetApplicationeuUserapps(http,ftp,telnet,…)qeRTransportLayerTransportClientTCP

7、ServerUDP(TCP,UDP,..)NetworkProgrammingInterface:NetworkRSocketse(IP,..)sultNetworkLayerIPLinkClientmachineLinkLayer(devicedriver,..)ServermachineDevicedrivers78NetworkingBasicsNetworkingBasicsTCP(TransportControlTCP/IPStackUDP(UserDatagramTCP/IPS

8、tackProtocol)isaProtocol)isaprotocolconnection-orientedthatsendsindependentApplicationApplicationprotocolthatprovidesapacketsofdata,called(http,ftp,telnet,…)(http,ftp,telnet,…)reliableflowofdata

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