嵌入式系统的网络服务器外文翻译

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1、TheDIL/NetPCsDNP/1110–UsingtheEmbeddedLinuxWebServerforEmbeddedSystemsAfterthe“everybody-in-the-Internet-wave”nowobviouslyfollowsthe“everything-in-the-Internet-wave”.Themostcoffee,vendingandwashingmachinesarestillnotavailableabouttheworldwidenet.HowevertheembeddedInternetintegr

2、ationforremotemaintenanceanddiagnosticaswellastheso-calledM2Mcommunicationisgrowingwithaconsiderablespeedrate.JusttheremotemaintenanceanddiagnosticofcomponentsandsystemsbyWebbrowsersviatheInternet,oralocalIntranethasaveryhighweightformanydevelopmentprojects.Innumerousdevelopmen

3、tdepartmentspeopleworkoncompletelyWebbasedconfigurationsandservicesforembeddedsystems.TheremainingdaysoftheclassicuserinterfacemadebyasmallLC-displaywithfrontpanelandafewfunctionkeysareover.ThroughfutureevolutionsinthefieldofthemobileInternet,Bluetooth-basedPANs(PersonalAreaNet

4、work's)andtherapidlygrowingM2Mcommunication(M2M=Machine-to-Machine)afurtherinnovatingadvanceistobeexpected.ThecentralfunctionunittogetaccessonanembeddedsystemviaWebbrowseristheWebserver.SuchWebserversbringthedesiredHTMLpages(HTML=HyperTextMarkupLanguage)andpicturesovertheworldw

5、ideInternetoralocalnetworktotheWebbrowser.ThishappensHTTP-based(HyperTextTransferProtocol).ATCP/IPprotocolstack–thatmeansitisbasedonsophisticatedandestablishedstandards–managestheentirecommunication.Webserver(HTTPserver)andbrowser(HTTPclient)buildTCP/IP-applications.HTTPachieve

6、daphenomenaldistributioninthelastyears.MeanwhilemillionsofuseraroundtheworldsurfHTTP-basedintheWorldWideWeb.Todayalmosteverypersonalcomputeroffersthenecessaryassistanceforthisprotocol.Thisstatusisvalidmoreandmoreforembeddedsystemsalso.TheHTTPspreadsupwithafastratetoo.20TheDIL/N

7、etPCsDNP/1110–UsingtheEmbeddedLinux1.TCP/IP-basedHTTPasCommunicationPlatformHTTPisasimpleprotocolthatisbasedonaTCP/IPprotocolstack(picture1.A).HTTPusesTCP(TransmissionControlProtocol).TCPisarelativecomplexandhigh-qualityprotocoltotransferdatabythesubordinateIPprotocol.TCPitself

8、alwaysguaranteesasafeguardedconnectionbetweentwocommun