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1、基于winsockapi的vc网络编程实战（PracticalprogrammingofVCnetworkbasedonWinsockAPI）PracticalprogrammingofVCnetworkbasedonWinsockAPIWiththerapiddevelopmentofcomputerinformationtechnology,theInternetismoreandmorecloselyrelatedtotheworkandlifeofhumansocietyIthasbecomeanimportant
2、wayandmeansforhumantoobtainandexchangeinformation.SofordevelopersatpresentNetworkprogrammingisanessentialskill.ThisexampledescribeshowtouseWinsockAPItowritenetworkapplications.First,therealizationmethodThemostcommonsolutioninnetworkprogrammingistheClient/Server(cl
3、ient/server)model.InthisschemeTheclientapplicationrequestsservicetotheserverprogram.AserviceroutineisusuallyinawellknownaddressListentorequestsforservices,thatistosay,theserviceprocessisdormantuntilacustomercomestothisserviceTheaddressoftheserviceputsforwardthecon
4、nectionrequest.Atthispoint,theserviceprogramis"awakened"andservesthecustomerRespondappropriatelytocustomerrequests.(noteAdministrator2011/11/316:52:04Blank)InordertofacilitatethenetworkprogrammingofthisClient/Servermodel,inearly90s,MicrosoftjoinedtheotherSeveralco
5、mpaniesjointlydevelopedasetofnetworkprogramminginterfaceunderWINDOWS,thatis,WindowsSocketsspecificationItisnotanetworkprotocol,butasetofopen,multiprotocolnetworkprogrammingunderWindowsInterface。TheWinsockisnowbasicallyimplementedwithoutprotocol,andyoucanuseWinsock
6、tocallitManyprotocolsareused,buttheTCP/IPprotocolismorefrequentlyused.SocketactuallyprovidesoneinthecomputerThecommunicationportcancommunicatewithanycomputerwithSocketinterfacethroughthisport.applicationprogramOnthenetworktransmission,thereceivedinformationisthrou
7、ghtheSocketinterfacetoachieve.MicrosoftdefinesWinsockclassesforVisualC++,suchastheCAsyncSocketclassandtheCSocketclassthatcomesfromCAsyncSocket.Theyareeasytouse,andreaderscancertainlyusetheseclassestoimplementtheirownnetworkprograms,ButinordertobetterunderstandtheW
8、insockAPIprogrammingtechnology,weexplorehowtousetheunderlyingAPIfunctiontoachieveasimpleWinsocknetworkshouldProgramdesign,respectively,explainshowtooper
