protocolsx3100m4
x3100m4 时间:2021-03-28 阅读:(
)
OTT(OvertheTop)EndtoEndSolutionIPTVandVODProposedby:GreatwayTechnologyCo.
,Ltd.
Date:July2013IPTVandVODSystemGreatwayTechnologyCo.
,Ltd.
Web:www.
greatwaytech.
com2Index1General.
42Components52.
1IPGateway62.
2MediaCodingServer(MCS)62.
3OperatingInformationServer(OIS)62.
4ContentDistributingServer(CDS)62.
5ResourceManagementServer(RMS)62.
6ElectronicProgramGuideServer(EPGS)72.
7Terminal.
73ServicesandApplications.
83.
1LiveTVProgram.
83.
2Timeshifting&Playback.
83.
3VOD.
93.
4PushVOD93.
5Radio.
93.
6Advertisement.
93.
7Others.
104SystemManagement.
104.
1Administrator.
114.
2Subscriber.
114.
3Server114.
4Terminal.
114.
5MediaResource.
114.
6Billing114.
7EPG.
124.
8Monitor&Statistics.
124.
9Others.
125Terminals135.
1GreatwaySTB13IPTVandVODSystemGreatwayTechnologyCo.
,Ltd.
Web:www.
greatwaytech.
com35.
2Others.
136IPTVandVODSystemBOM.
146.
1SystemHeadendHardware146.
2Storage156.
3Security16Abbreviations.
17H.
264SD/HDIPTVSet-Top-Box18IPTVandVODSystemGreatwayTechnologyCo.
,Ltd.
Web:www.
greatwaytech.
com41GeneralMOP2.
0(MediaOperatingPlatform2.
0)isanendtoendsolution,designedanddevelopedbyGreatwayTechnologyforOTTservices.
ItenablenetworkTVprovider,webvideoprovider,telecomoperator,cableTVoperatortoextendtheirservicestodeliverliveIPTV,VOD,information,gameandmanyothervalueaddedservicesviainternetcosteffectively.
Theplatformhasfollowingcharacteristics:lInternetbased,supportlocal,regionalandglobaldeployment;lP2SP&HLSbased,reducingoperationcost,enhancinguser'sexperiences;lSupportmultivideoformat;lSupportDRM,protectingcontentseffectively;lScalablesystem,uptomillionslevelsubscription;lSupportmultiterminal,includingSTB,PC,smartTV,PAD,mobile,etc.
;lSupportregionalcontentstorageanddistribution;lCompletefaulttolerantsystem.
Figure1DiagramofMOP2.
0IPTVandVODSystemGreatwayTechnologyCo.
,Ltd.
Web:www.
greatwaytech.
com52ComponentsMOP2.
0headendsystemincludingIPGateway,MediaCodingServer(MCS),ContentDistributingServer(CDS),OperatingInformationServer(OIS),ResourcesManagementServer(RMS),ElectronicProgramGuideServer(EPGS),etc.
Eachdevicecanbedeployedcentrallyorregionally.
Thesystemcanbeexpandedseamlessly,eitheratcentrallevelorregionalleveltoensuresystemandoperationexpandingcost/effectivelyoninternet.
Contentscanbefromvarioussources,includingDVB/S/T/C,videocamera,videoserver,mediastoragesystem,etc.
IPGatewaytransformcontentsfromsuchsourcesintostandardTSstreams,thestreamsfurtherencodedintostreamformatfordistributingviainternet,andinjectedintoCDS,andthenguidedbyDB,OIS,EPGSanddistributedtoregionalserverorenduser'sdevice.
ThesystemismanagedandadministratedbyoperatorviaRMS,includingcontrolandoperationofheadenddevices,regionaldevices,contentresourcesanduser'senddevices,asshowninfollowingfigure.
Figure2NetworkStructureofMOP2.
0IPTVandVODSystemGreatwayTechnologyCo.
,Ltd.
Web:www.
greatwaytech.
com62.
1IPGatewayIPGatewaytransformsbroadcastingstreamsintoIPstreamsandthenputintoMCS.
üEachIPGatewaycansupportupto6streams;üSupportDVB-C/S/T/S2/T2input;2.
2MediaCodingServer(MCS)MCSisalsonamedasvideoencoder.
üEachMCScansupportupto4-16streams,dependsonbitrateandvideoquality;üSupportinputfromSDI,ASI,AV,LANetc.
;üSupportmultiformat,includingMPEG2/MPEG4/H.
264/WMV,etc.
;üSupportvarybyterateandABRtechnology,supportoutputofUDP/HTTP/HLS;üStateofarttechnologyensuredisplayqualityatlowbitrate;2.
3OperatingInformationServer(OIS)ManyfunctionsareintegratedintoOIS,suchasuserauthentication,billinginformation,deviceinformation,channelandmovieinformation,distributionstrategy,LoadBalance,etc.
OISgraspsalmostallofMOPinformationandprovidestheseservices.
Baseonthisdesign,manyspecializedserversarereduced.
Thesystemisquickerandcostislower.
üByclusterdeployment,supportuptomillionsofsubscribers;üBackupeachotherwithoutredundancy,ensuresafeoperationofthesystem;üHTTPSenhancessystemsecurity;üSimplearchitecture,easydeploymentandupgrade,seamlessexpansion;2.
4ContentDistributingServer(CDS)CDSactsasbothCDNnodeandvideoserver.
ItdistributesmediacontenttowholeMOPheadendstoragesundertheorderofOIS,andprovidesmediastreamingservicesunderterminals'request.
üLiveTVsteaming,Time-shiftstreaming,Playbackstreaming,VODstreaming,etc.
üSupportP2SPandHLSprotocols,reduceloadofserver,improveuser'sexperiences;üWithDRMforsecuringcontents,alsocansupportthirdparty'sDRM;üSupportweeklycontendrecordingandplayback,supportupto60minutestimeshift;üSupportonlinestreamsolicitingandofflinecontentsoliciting;üOptimizedIO,improvedstoragespaceefficiencyandIOthroughputcapability.
2.
5ResourceManagementServer(RMS)ThoughRMS,theadministratormanagesallresourcesofMOP,includingservers,terminals,EPG,storages,subscribers,channels,movies,radios,recordfiles,etc.
üInternetbased,remoteWebbrowseroperation,easytoinstallandoperate;üDirectconnectionwithOIS,quickresponseandhighperformance;üOnlinesystemoperationmonitoring,remotediagnostic;üFunctionalandspecializeddataandinformationstatisticreporting,soundfordataandIPTVandVODSystemGreatwayTechnologyCo.
,Ltd.
Web:www.
greatwaytech.
com7informationanalyzing;üBuiltinnetworkmanagement,pointtopointcontrolonterminal.
2.
6ElectronicProgramGuideServer(EPGS)EPGSprovidewebuserinterfacesforsubscribertoenjoytheabundantentertainmentandinformationservices.
SubscribercanselectserviceviaEPG-Webpage,whichareeasytoredevelopandupgrade;üProvidechannellist,historyprogram(defaultedasoneweek);üProvideVODprogram;üSupportEPGadvertisementinjection;üSpecializedEPGforvariousterminal,includingSTB,Pad,smartTV,etc.
;üHotdatabuffering,enhancedcapabilityofconcurrentrequest;üOpenforsecondarydesignandre-development,easytoupgrade.
2.
7TerminalüSupportSTB,PC,PAD,smartPhone,smartTV;üSupportdeviceswithOSofiOS,Android,Windows,Linux;üSupportplaybackofLD,SDandHD;üSupport2Dand3Dgames;üSupportIRremotecontrol,smartremotecontrol,keyboard,mouse,sensoretc.
üSupportmultiscreeninteracting,AirplayandDLNA.
IPTVandVODSystemGreatwayTechnologyCo.
,Ltd.
Web:www.
greatwaytech.
com83ServicesandApplications3.
1LiveTVProgramLiveTVprogramcanbefromDVBC/S/T,orothersources.
OriginalstreamsareencodedbyIPgatewaysandencoders,injectedintoMOPsystem,anddeliveredtoterminalsviainternetbyP2SPorHLSprotocols.
üUsingP2PSprotocoltosave50-90%bandwidthneededfromheadendtoInternet;üUsingHLSprotocoltosupportABR,dynamicadjustbitratetoensuresmoothplay;üTimedelaylimitedwithin3minutes;üSupportmultilanguageaudiochannelandsubtitles;üSupportmultiscreeninteractive;üSupportDRMandsubscriptionauthorization;üH.
264-TSrecommended.
Figure3DiagramofLiveTVProgramofOTTTV3.
2Timeshifting&PlaybackTheMOPsupportsusingHDD,RAID,NASasstoragemediatorecordTVprogramatcentralorregionalheadend.
SubscribercanplaybackrecordedcontentsguidedinEPGinterface.
üTimelengthofrecordedprogramcanbesetasneeded(oneweekrecommended);üWorkwithEPG,subscribercanplaybackmissedprogramconveniently;üSupportplaylistbatchprocessing;üSupportmultistoragemedia,includingHDD,RAID,NAS,etc.
;üSupportPVRfunction;üSupportDRMandsubscriptionauthorization;üSupportABRanddynamicbitrateadjustment.
IPTVandVODSystemGreatwayTechnologyCo.
,Ltd.
Web:www.
greatwaytech.
com9Figure4DiagramofPlaybackandTimeshifting3.
3VODMovies,dramas,recordfilesandothercontentscanbestoredatheadendstorage(HDD,RAID,NAS,etc.
)anddeliveredviaCDStosubscriberonrequest.
Subscribercanselectinterestedmoviebycategory,and/orlistinstantly(forlowerdefinition),orcanstorethecontentonlocalstoragemedia(USBmemory,USBHD,etc.
)forenjoyingdownloadedhighdefinitioncontents.
üListbycategory,region,time,staring,etc.
;üFlexiblebillingstrategy,payperview,payperpackage,orbydaily,weekly,monthly,annuallycharge,etc.
;üSupportPVRfunction;üSupportDRMandsubscriptionauthorization;üSupportABRanddynamicbitrateadjustment;üSupportmultilanguageandsubtitle;üSupportmultiscreeninteraction,AirplayandDLNA;3.
4PushVODAdministratorselectsomecontentsandputthemtoterminalstorage(USBflash,USBHDD,etc.
)throughRMS.
SubscribercangetmuchbetterexperiencethanVOD.
üPushcontentbetweenspecifiedtimerange;üFlexiblepushingstrategybasedonP2SP,lowcastofbandwidth;üAdaptivepushingbitrateatback,doesnotaffectcurrentplay;3.
5RadioüVerysmallbandwidthneeded;üSupportmonoandstereo;üCustomizablescreenbackground;üSupportadvertisementinjection.
3.
6AdvertisementEPGadvertisementcanbedisplayedonTVscreenduringsubscriberviewingEPG,inIPTVandVODSystemGreatwayTechnologyCo.
,Ltd.
Web:www.
greatwaytech.
com10dedicatedareawithoutinterruptingorshelteringnormalinformationdisplaying,advertisementcanbedisplayed:üDuringSTBbootingup;üOverlayingonvolumeindicatorbarwhensubscriberadjustaudiovolume;üDuringliveTVchannelchanging;üInblankareaofEPG;üInstanttextnotification.
3.
7OthersüDigitalphotoalbumüWeatherforecastüTravelinformationüE-Business4SystemManagementOperatorcanmanageheadendsystemanditsoperationonRMSviainteractiveinterface.
IPTVandVODSystemGreatwayTechnologyCo.
,Ltd.
Web:www.
greatwaytech.
com114.
1AdministratorAdministratorcanbeauthorizedwithvariouslevelsforaccessingMOPsystem,suchasgeneraloperational;technicalandmaintenance,mediaannouncementandmanagement,subscriptionmanagement,etc.
4.
2SubscriberüSubscriberaccountopen,close,andmanagement;üSupportmultidevicesunderoneaccount;üSupportuptomillionssubscription,seamlessexpansion;üSupportonlineorofflinenotification.
4.
3ServerüAdd/Remove/Enable/DisableOIS,CDS,EPGS;üLoadBalance;4.
4TerminalüBatchregistration,reduceworkloadandfault;üRemoteautomaticSTBsoftware/firmware/applicationupgrade(forSTB);üSupportSTBupgradebypoint,group,area.
4.
5MediaResourceüLiveTVchannel/streamgeneration,edition;üVODmediaupload,storage,categorization,distribution.
üDRMformediaencryption;üPushmediafromservertoterminal;üSubscribersinitiativelydownloadmediafromserver.
4.
6BillingüCustomizablebillingstrategy;üSupportpayperview,bypackage,daily,weekly,monthly,annuallysubscription;üSupportbillingdiscountingandpreferential;üSupportsubscriptioninformationrecordingandanalyzing.
IPTVandVODSystemGreatwayTechnologyCo.
,Ltd.
Web:www.
greatwaytech.
com124.
7EPGüEPGgeneration,edition,synchronization;üMultistyleEPGforvariousterminal;üChannellist;üHistoryprogram;üVODlist;üEPGadvertisement;4.
8Monitor&StatisticsüOnlinemonitoringofequipment,servers,livingstream,terminals.
üP2Pefficiencystatisticsbychannelorterminal;üServerorterminalflowstatistics;üSubscriberactionstatistics.
üLogexportationandinquiry;4.
9OthersüMediagroup;üBandwidthtesting;üDatabasebackup;IPTVandVODSystemGreatwayTechnologyCo.
,Ltd.
Web:www.
greatwaytech.
com135Terminals5.
1GreatwaySTBGreatwayS-BoxfamilyisaseriesofIPTV,OTTTVSTBs,rangingfromlowcostentrancelevelSDSTBtohighendlevelSTBwithfeaturesofSD/HD,PVR,DVB-IPhybrid,whichworksperfectlywithGreatwayMOP,enableOTTTVoperatordelivertheservicestosubscriberseasily,quicklyandcosteffectively.
Thestateofartdesignandinnovativetechnologyadopted,stableanddurableoperationalperformanceensurequalityofservicesandguaranteeuse'sexperiences.
WithAndroidOS,andfeaturesofWi-Fi,DLAN,Airplay,S-Boxcanfullyinteractwithotherdevicessuchasmobile,Pad,PC,etc.
5.
2OthersAPPandAPKareavailableforsubscriberenjoyingOTTTVservicesoniPhone/iPadandAndroidphone/pad.
SubscribercanusesuchdevicetocontrolGreatwaySTB.
IPTVandVODSystemGreatwayTechnologyCo.
,Ltd.
Web:www.
greatwaytech.
com146IPTVandVODSystemBOM6.
1SystemHeadendHardwareItemPerformanceDisasterRecoveryServerConfigurationRecommendingOIS100KSubscribersMainandStandbyCPU:4core3GHzHD:500GBRAM:8GBNET:1000MDellR710CDS2000MbpsMutualStandbyCPU:4core3GHzHD:500GBRAM:8GBNET:1000Mx4IBMX3100M4XeonEPGS20KSubscribersMutualStandbyCPU:4Core3GHzHD:500GBRAM:8GBNET:1000MIBMX3100M4XeonDB8000pcspersecondAsynchronousreplicationCPU:2core2GHzHD:500GBRAM:4GBNET:1000MDellR410RMSAsynchronousreplicationCPU:2core2GHzHD:500GBRAM:2GBNET:100MDellR210MCS4-16channelsCPU:4core3GHzHD:200GBRAM:2GBNET:1000MDellR410SWITCH1000MH3CS5500EI(28P-52P)Suppose100Ksubscribersinthesystem,30%on-linerate,40channelsliveTV,contentsdatarate500Kpcs~4Mbps(averagedatarate1Mpbs),thesystemhardwareshouldbe:1)OIS:2pcs,onemainandonestandby2)CDS:100000*0.
3*1M/2000M=15pcs.
IfthereisliveTVserviceonly,theCDSnumbercanbe15*(1-0.
8)=3pcs(consideringthe80%P2Pefficiency).
3)EPGS:100000/20000=5pcs4)DB:1pcs5)RMS:1pcs(RMScanbestand-bywithDBeachother)IPTVandVODSystemGreatwayTechnologyCo.
,Ltd.
Web:www.
greatwaytech.
com156)MCS:40/4=10pcsIfthesubscribersarelocatedinabigareabelongingtodifferentISP,theserversshouldbedistributedintheCentralareaandEdgearea.
6.
2StorageüBroadcastRecording:thestoragecapacityis7*24*3600/8*40=3024000MB=3TBbasedon40chliveSDTVat1Mbpsdatarateeachchannelfor7days.
IfthebroadcastneedsABR,eachchannelshouldhave3kindsofdatarates(high,middleandlow),thestoragecapacityis9TB.
üVODStorage:Basedononline15000hourscontentsand1Mbpsdatarate,thestoragecapacityis15000*3600/8=6750000MB=7TB.
IfVODneedsABR,thecontentshouldhave3kindsofdatarates(high,middleandlow),thestoragecapacityis21TB.
üOtherstorage:Systemsoftwareanddatabaseetc.
need10GB.
Insummary,thestoragespacecanbe10TBto30TBor100TBiftherearemoreSDorHDcontents.
DuetothelimitedIOcapacityoftheserverHardDisc,werecommendtheIPTVandVODSystemGreatwayTechnologyCo.
,Ltd.
Web:www.
greatwaytech.
com16followingstoragesolutions:StorageSolutionExtraStorageTechnologyFeaturesNetworkSubscribersNoLowcost,easyinstallationStandardHardDiscIONoDisasterRecoveryLessthan50KLocalHardDiscsalongwiththeserverWithNASSoftwareCurrentHardDiscResourceBetterIOCapacityDisasterRecoveryCapability50K~100KNoBetterIOCapabilityBetterDisasterRecoveryBiggerContentsCapacity50K~100KRAID5alongwiththeserverWithNASSoftwareBetterIOCapabilityBetterDisasterRecoveryBiggerContentsCapacity100KEdgeHardDiscStrongerIOCapabilityStrongerDisasterRecoveryGoodContentsCapacity100KCentralHubwithNASEdgeHardDiscwithNASSoftwareExcellentIOCapabilityExcellentDisasterRecoveryExcellentContentsCapacity100KoraboveRecommendedNASSolution:InitstreamNAS(http://www.
initdream.
com)6.
3SecurityüSignalinHTTPStechnologyüStreaminDRMüReal-timeuserauthenticationüDatabaseIsolationwithSOAPinterfaceüAdministrationanduseraccessseparatedüServersmutualdisasterrecoveryüWatchingDogfunctionIPTVandVODSystemGreatwayTechnologyCo.
,Ltd.
Web:www.
greatwaytech.
com17AbbreviationsOTTOverTheTopMOPMediaOperatingPlatformOISOperatingInformationServerCDSContentDistributingServerRMSResourceManagementServerMCSMediaCodingServerEPGElectronicProgramGuideEPGSEPGServerP2PPeerToPeerP2SPPeerToServerandPeerHLSHttpLiveStreamRTMPRealTimeMessagingProtocolABRAdaptiveBitRateASIAsynchronousSerialInterfaceSDISerialDigitalInterfaceDRMDigitalRightsManagementNASNetworkAttachedStorageIPTVandVODSystemGreatwayTechnologyCo.
,Ltd.
Web:www.
greatwaytech.
com18H.
264SD/HDIPTVSet-Top-BoxTheS-Box8800CisanIP-basedSet-TopBoxsupportingH.
264SD/HDdecoding.
ItoffersenhancedcapabilitiesforIPTVservicesincludingMulticast,Video-on-DemandandInternetaccess.
TheS-Box8800CenablesServiceProviderstodeliverinteractivemultimediaservicestoend-users,therebyincreasingthevalueoftheoperator'snetwork,enablingoperatorstoincreaserevenues.
Italsoprovidessubscriberwithmoreflexibleandpersonalizedviewingexperience.
KeyFeatureslEnhancedVideoQualitylMultiVideo/AudioOutputslHardwareVideoDecodinglPlug&Play,SimpleInstallationandSetuplFullyCompatiblewithOpenInternationalProtocollSupportarangeofMiddlewareandContentProtectSolutionslCostOptimizedTechnologyandDesign,LowCostofOwnershipSpecificationsEmbeddedArchitectureProcessor:ARMCortexA9,1500DMIPsFlashMemory:128MBDDRAM:256MBOperationSystem:LinuxVideoVideoDecoding:H.
264MP,HP@level4.
1AVSVideoForm:PAL/NTSCAspectRatio:4:3and16:9,autoformatdetectionOutDefinition:480i,480p,576i,576p,720p,1080i,1080pVideoOutput:HDMI,CVBS,Encoding:H.
264AudioDecodingFormats:MPEG(Layer1,2),MP3VolumeControl:32-levelAdjustable,MuteOutputModes:Mono/Stereo,S/PDIFIPTVandVODSystemGreatwayTechnologyCo.
,Ltd.
Web:www.
greatwaytech.
com19ProtocolsIPProtocol:IPv4/IPv6NetworkProtocol:TCP/IP,HTTP,POP3,DHCP,DNS,FTP,NTP,SSL,PPPoE,StreamingProtocol:MulticastIPTV(IGMP)VideoonDemand(RTSP/RSVPcontrol)HTTPAdobeRTMPTransportProtocol:TSoverUDP,TSoverRTPInterfacesEthernetInterface:1*10/100MBase-T,RJ45VideoOutput:1xHDMI,1xRCA,AudioOutput:2xRCA(L/R)forStereo,1xSPDIFUSB2.
0Host*2IRRemoteControlforTVandSet-topFunctionsPlug-topPowerSupply(12VPowerAdaptor)OSDVideo/GraphicsPlaneMultipleLayerColor:32-bitARGBforVideoAlphaBlending:256levelOSDFlickerFilterPicture-in-GraphicsPictureDecoding:JPEG,GIF,PNGApplicationSoftwareEmbeddedBrowser:HTML5.
0,JavaScript1.
5WebkitSupportMultiVideoServersSupportUSBMouseandKeyboardSupportV4L2andALSADriverSupportOnlineSoftwareUpgradeOthersDimensions:178*178*33mm(W*D*H)PowerSupply:External12VPowerConsumption:<12WSilentOperation:NoForcedAirCooling
一、麻花云官网点击直达麻花云官方网站二、活动方案优惠码:专属优惠码:F1B07B 享受85折优惠。点击访问活动链接最新活动 :五一狂欢 惠战到底 香港云主机 1.9折起香港特价体验云主机CN2 云服务器最新上线KVM架构,,默认40G SSD,+10G自带一个IPv4,免费10Gbps防御,CPU内存带宽价格购买1核1G1M19元首月链接2核2G 2M92元/3个月链接2核4G3M112元/3个月...
硅云怎么样?硅云是一家专业的云服务商,硅云的主营产品包括域名和服务器,其中香港云服务器、香港云虚拟主机是非常受欢迎的产品。硅云香港可用区接入了中国电信CN2 GIA、中国联通直连、中国移动直连、HGC、NTT、COGENT、PCCW在内的数十家优质的全球顶级运营商,是为数不多的多线香港云服务商之一。目前,硅云香港云服务器,CN2+BGP线路,1核1G香港云主机仅188元/年起,域名无需备案,支持个...
提速啦 成立于2012年,作为互联网老兵我们一直为用户提供 稳定 高速 高质量的产品。成立至今一直深受用户的喜爱 荣获 “2021年赣州安全大赛第三名” “2020创新企业入围奖” 等殊荣。目前我司在美国拥有4.6万G总内存云服务器资源,香港拥有2.2万G总内存云服务器资源,阿里云香港机房拥有8000G总内存云服务器资源,国内多地区拥有1.6万G总内存云服务器资源,绝非1 2台宿主机的小商家可比。...
x3100m4为你推荐
太空国家世界上有哪些国家有能力探索太空同ip网站同IP的两个网站,做单向链接,会不会被K掉??同一服务器网站一个服务器放多个网站怎么设置?8090lu.com8090看看电影网怎么打不开了javmoo.com找下载JAV软件格式的网站www.vtigu.com初三了,为什么考试的数学题都那么难,我最多也就135,最后一道选择,填空啊根本没法做,最后几道大题倒www.vtigu.com如图所示的RT三角形ABC中,角B=90°(初三二次根式)30 如图所示的RT三角形ABC中,角B=90°,点p从点B开始沿BA边以1厘米每秒的速度向A移动;同时,点Q也从点B开始沿BC边以2厘米每秒的速度向点C移动。问:几秒后三角形PBQ的面积为35平方厘米?PQ的距离是多少m.kan84.net经常使用http://www.feikan.cc看电影的进来帮我下啊avtt4.comwww.51kao4.com为什么进不去啊?99nets.com99nets网游模拟娱乐社区怎么打不开了?????????谁能告诉我 ???、
香港cdn l5520 外国域名 好看的桌面背景图 一元域名 网盘申请 发包服务器 网站cdn加速 酷番云 web服务器是什么 dnspod 腾讯网盘 葫芦机 register.com ncp是什么 linuxvi 跟踪路由 瓦工技术 远程主机强迫关闭了一个现有的连接 网站服务器硬件配置 更多