(NDK) API Reference Guide

274 Pages·2017·1.17 MB·English

TI Network Developer's Kit (NDK) API
Reference Guide
LiteratureNumber:SPRU524K
May2001–RevisedOctober2017
Contents
Preface........................................................................................................................................ 9
1 Introduction....................................................................................................................... 11
1.1 WhatThisDocumentCovers............................................................................................. 12
1.2 Introduction.................................................................................................................. 12
1.3 SupplementalAPIInformation............................................................................................ 13
2 OperatingSystem AbstractionAPI....................................................................................... 14
2.1 OperatingSystemConfiguration......................................................................................... 15
2.1.1 ConfigurationStructure........................................................................................... 15
2.2 TaskSupport................................................................................................................ 17
2.2.1 FunctionOverview................................................................................................ 17
2.2.2 TaskAPIFunctions............................................................................................... 18
2.3 SemaphoreSupport........................................................................................................ 22
2.3.1 FunctionOverview................................................................................................ 22
2.3.2 SemaphoreAPIFunctions....................................................................................... 22
2.4 MemoryAllocationSupport............................................................................................... 25
2.4.1 FunctionOverview................................................................................................ 25
2.4.2 MemoryAllocationAPIFunctions............................................................................... 25
2.5 PrintandDebugSupport.................................................................................................. 26
2.5.1 StandardAPIFunctions.......................................................................................... 26
2.5.2 DebugAPIFunctions............................................................................................. 27
2.6 FileI/OSupportforEmbeddedSystems................................................................................ 27
2.6.1 FunctionOverview................................................................................................ 28
2.6.2 EFSCustomAPIFunctions...................................................................................... 28
2.6.3 EFSStandardAPIFunctions.................................................................................... 32
3 SocketsandStreamIOAPI.................................................................................................. 35
3.1 FileDescriptorEnvironment.............................................................................................. 36
3.1.1 Organization ....................................................................................................... 36
3.1.2 InitializingtheFileSystemEnvironment ....................................................................... 36
3.1.2.1 WhentoInitializetheFileDescriptorEnvironment..................................................... 36
3.1.2.2 Auto-InitializingtheFileDescriptorEnvironment ....................................................... 37
3.2 FileDescriptorProgrammingInterface.................................................................................. 38
3.2.1 FunctionOverview................................................................................................ 38
3.2.2 FileDescriptorAPIFunctions.................................................................................... 38
3.2.3 FileDescriptorSet(fd_set)Macros............................................................................. 44
3.3 SocketsProgrammingInterface.......................................................................................... 46
3.3.1 EnhancedNo-CopySocketOperation ......................................................................... 46
3.3.2 FunctionOverview................................................................................................ 47
3.3.3 SocketsAPIFunctions............................................................................................ 48
3.4 RawEthernetSocketsProgrammingInterface......................................................................... 66
3.4.1 FunctionOverview................................................................................................ 66
3.4.2 RawEthernetSocketsAPIFunctions.......................................................................... 66
3.5 FullDuplexPipesProgrammingInterface.............................................................................. 74
3.5.1 PipeAPIFunctions................................................................................................ 75
3.6 InternetGroupManagementProtocol(IGMP).......................................................................... 75
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4 ConfigurationandInitialization............................................................................................ 76
4.1 ConfigurationMethods..................................................................................................... 77
4.2 ConfigurationManagerAPI............................................................................................... 77
4.2.1 FunctionOverview................................................................................................ 78
4.2.2 ConfigurationAPIFunctions..................................................................................... 79
4.2.3 ConfigurationEntryAPIFunctions.............................................................................. 89
4.3 ConfigurationSpecification................................................................................................ 92
4.3.1 Organization ....................................................................................................... 92
4.3.2 NetworkServiceSpecification(CFGTAG_SERVICE)........................................................ 92
4.3.2.1 ServiceTypes............................................................................................... 93
4.3.2.2 CommonArgumentStructure............................................................................. 93
4.3.2.3 IndividualConfigurationEntryInstanceStructures..................................................... 95
4.3.2.4 SpecifyingNetworkServices.............................................................................. 96
4.3.3 IPNetworkSpecification(CFGTAG_IPNET).................................................................. 99
4.3.4 IPGatewayRouteSpecification(CFGTAG_ROUTE)...................................................... 100
4.3.5 ClientRecordSpecification(CFGTAG_CLIENT)............................................................ 100
4.3.6 ClientUserAccount(CFGTAG_ACCT)....................................................................... 101
4.3.7 SystemInformationSpecification(CFGTAG_SYSINFO)................................................... 102
4.3.8 ExtendedSystemInformationTags........................................................................... 102
4.3.9 OS/IPStackConfigurationItemSpecification(CFGTAG_OS,CFGTAG_IP).......................... 103
4.4 InitializationProcedure................................................................................................... 105
4.5 NetworkControlInitializationProcedure(NETCTRL)................................................................ 105
4.5.1 InitializationProcedure.......................................................................................... 106
4.5.2 FunctionOverview............................................................................................... 107
4.5.3 NetworkControlAPIFunctions................................................................................ 107
5 NetworkToolsLibrary-SupportFunctions ......................................................................... 110
5.1 GenericSupportCalls.................................................................................................... 111
5.1.1 FunctionOverview............................................................................................... 111
5.1.2 NetworkToolsSupportAPIFunctions........................................................................ 111
5.2 DNSSupportCalls........................................................................................................ 117
5.2.1 FunctionOverview............................................................................................... 117
5.2.2 StandardTypesandDefinitions ............................................................................... 117
5.2.2.1 HostEntryStructure....................................................................................... 117
5.2.2.2 FunctionReturnCodes................................................................................... 118
5.2.3 DNSSupportAPIFunctions.................................................................................... 118
5.3 TFTPSupport............................................................................................................. 120
5.3.1 TFTPSupportAPIFunctions................................................................................... 120
5.4 TCP/UDPServerDaemonSupport.................................................................................... 121
5.4.1 ServerDaemonSupportAPIFunctions ...................................................................... 122
5.4.2 ServerDaemonExample....................................................................................... 123
6 NetworkToolsLibrary-Services........................................................................................ 124
6.1 ServiceCallingConventions............................................................................................ 125
6.1.1 SpecifyingNetworkServicesUsingtheConfiguration...................................................... 125
6.1.1.1 ServiceReportFunction ................................................................................. 125
6.1.2 InvokingNetworkServicesbyNETTOOLSAPI............................................................. 125
6.2 TelnetServerService.................................................................................................... 127
6.2.1 TelnetParameterStructure..................................................................................... 127
6.2.2 InvokingtheServiceviaNETTOOLSAPI.................................................................... 128
6.3 DHCPServerService.................................................................................................... 128
6.3.1 Operation......................................................................................................... 128
6.3.2 DHCPServerParameterStructure............................................................................ 129
6.3.3 InvokingtheServiceviaNETTOOLSAPI.................................................................... 129
6.4 DHCPClientSupport..................................................................................................... 130
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6.4.1 Operation......................................................................................................... 130
6.4.2 DHCPClientParameterStructure............................................................................. 131
6.4.3 InvokingtheServiceviaNETTOOLSAPI.................................................................... 131
6.5 HTTPServerSupport.................................................................................................... 132
6.5.1 Operation......................................................................................................... 132
6.5.2 HTTPServerParameterStructure............................................................................ 132
6.5.3 UsingtheHTTPServerandAddingWebContent.......................................................... 133
6.5.4 InvokingtheServiceviaNETTOOLSAPI.................................................................... 133
6.6 DNSServerService...................................................................................................... 133
6.6.1 Operation......................................................................................................... 134
6.6.2 DNSServerParameterStructure ............................................................................. 134
6.6.3 InvokingtheServiceviaNETTOOLSAPI.................................................................... 134
6.7 NetworkAddressTranslation(NAT)Service.......................................................................... 134
6.7.1 Operation......................................................................................................... 135
6.7.2 NATServerParameterStructure.............................................................................. 135
6.7.3 InvokingtheServiceviaNETTOOLSAPI.................................................................... 135
A InternalStackFunctions.................................................................................................... 137
A.1 Overview................................................................................................................... 138
A.1.1 InterruptsandPreemption...................................................................................... 138
A.1.2 ProperUseofthellEnter()andllExit()Functions............................................................ 138
A.1.3 Objects............................................................................................................ 138
A.2 StackExecutive(Exec).................................................................................................. 139
A.2.1 APIFunctions .................................................................................................... 139
A.3 PacketBufferManager(PBM)Object ................................................................................. 140
A.3.1 ObjectType....................................................................................................... 140
A.3.2 APIFunctionOverview.......................................................................................... 140
A.3.3 APIFunctionDescription ....................................................................................... 141
A.4 PacketBufferManagerQueue(PBMQ)Object ...................................................................... 144
A.4.1 ObjectType....................................................................................................... 144
A.4.2 APIFunctionOverview.......................................................................................... 144
A.4.3 APIFunctionDescription ....................................................................................... 145
A.5 JumboPacketBufferManager(JumboPBM)Object................................................................ 146
A.5.1 APIFunctionOverview.......................................................................................... 146
A.5.2 APIFunctionDescription ....................................................................................... 146
A.6 StackEvent(STKEVENT)Object...................................................................................... 148
A.6.1 ObjectType....................................................................................................... 148
A.6.2 APIFunctionOverview.......................................................................................... 148
A.6.3 APIFunctionDescription ....................................................................................... 148
A.7 LinkLayerInformation(LLI)Object .................................................................................... 150
A.7.1 ARPRevalidationLogic......................................................................................... 150
A.7.2 ObjectType....................................................................................................... 150
A.7.3 InformationStructure............................................................................................ 151
A.7.4 APIFunctionOverview.......................................................................................... 151
A.7.5 APIFunctions .................................................................................................... 152
A.8 BindingObject............................................................................................................. 155
A.8.1 ObjectType....................................................................................................... 155
A.8.2 BINDAPIFunctions............................................................................................. 155
A.9 RouteObject .............................................................................................................. 157
A.9.1 ObjectType....................................................................................................... 157
A.9.2 RouteEntryFlagsDefinition.................................................................................... 157
A.9.3 RouteEntryFlagsGuidelines.................................................................................. 159
A.9.4 APIFunctions .................................................................................................... 160
A.10 RouteControlObject..................................................................................................... 164
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A.10.1 RouteControlMessages...................................................................................... 164
A.10.2 RouteControlAPIFunctions.................................................................................. 167
A.11 ConfiguringtheStack.................................................................................................... 167
A.11.1 ConfigurationStructure........................................................................................ 168
A.12 NetworkAddressTranslation............................................................................................ 176
A.12.1 Operation........................................................................................................ 176
A.13 NetworkInterfaceManagementUnit(NIMU)......................................................................... 177
A.13.1 Synopsis......................................................................................................... 177
A.13.2 DataStructureDefinition...................................................................................... 178
A.13.3 NIMUConfiguration............................................................................................ 182
A.13.4 APIFunctionOverview........................................................................................ 182
A.13.5 APIFunctionDescription...................................................................................... 183
A.14 VirtualLAN(VLAN)Support............................................................................................. 186
A.14.1 Synopsis......................................................................................................... 186
A.14.2 UserPriorityMappingConfiguration......................................................................... 187
A.14.2.1 UserPriorityConfiguration............................................................................... 187
A.14.2.2 MarkingPacketPriority................................................................................... 189
A.14.3 APIFunctionOverview........................................................................................ 190
A.14.4 APIFunctions................................................................................................... 190
A.15 RawEthernetModule.................................................................................................... 192
A.15.1 Synopsis......................................................................................................... 192
A.15.2 RawEthernetDataPrioritization-SocketPriorityUseCase............................................. 193
A.15.2.1 SocketPriorityConfiguration............................................................................. 193
A.15.3 APIFunctionOverview........................................................................................ 194
A.15.4 APIFunctions................................................................................................... 195
A.16 ObtainingStackStatistics................................................................................................ 196
B NetworkAddressTranslation............................................................................................. 197
B.1 NATOperation............................................................................................................ 198
B.1.1 TypicalConfiguration............................................................................................ 198
B.1.2 BasicNAT ........................................................................................................ 198
B.1.3 NATPortMapping............................................................................................... 200
B.1.4 NATProxyFilters................................................................................................ 203
B.1.4.1 ProblemSynopsis......................................................................................... 203
B.1.4.2 ProblemExample-FTPClientsontheLAN........................................................... 203
B.1.4.3 NDKSupportforProxyFilters .......................................................................... 205
B.1.4.4 FTPProxyFilterExampleCode......................................................................... 206
B.2 NATPortMapping........................................................................................................ 208
B.2.1 FunctionOverview............................................................................................... 208
B.2.2 NATEntryInformationStructure............................................................................... 208
B.2.3 NATAPIFunctions.............................................................................................. 209
B.3 NATProxyFilters......................................................................................................... 210
B.3.1 FunctionOverview............................................................................................... 210
B.3.2 NATProxyFilterCallbackFunctions.......................................................................... 211
B.3.3 NATProxyAPIFunctions....................................................................................... 212
C Point-to-PointProtocol...................................................................................................... 214
C.1 LowLevelPPPSupport.................................................................................................. 215
C.1.1 PPPOperation................................................................................................... 215
C.1.2 FunctionOverview............................................................................................... 216
C.1.3 SupportedProtocols............................................................................................. 216
C.1.4 SIModuleCallbackFunction................................................................................... 216
C.1.4.1 FunctionDeclaration...................................................................................... 217
C.1.4.2 SI_MSG_CALLSTATUSMessage...................................................................... 217
C.1.4.3 SI_MSG_SENDPACKETMessage .................................................................... 218
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C.1.4.4 SI_MSG_PEERCMAPMessage........................................................................ 218
C.1.4.5 ExampleCallbackFunctionImplementation........................................................... 218
C.1.5 TipsforImplementingaPPPSerialInterface(SI)ModuleInstance...................................... 219
C.1.5.1 MultipleInstances......................................................................................... 219
C.1.5.2 UsingtheTimerObject................................................................................... 219
C.1.5.3 RegisteringPacketPaddingRequirements............................................................ 220
C.1.6 PPPAPIFunctions.............................................................................................. 220
C.2 SerialHDLCClientandServerSupport............................................................................... 223
C.2.1 FunctionOverview............................................................................................... 223
C.2.2 HDLCAPIFunctions............................................................................................ 223
C.3 PPPoEClientandServerSupport...................................................................................... 227
C.3.1 FunctionOverview............................................................................................... 227
C.3.2 PPPoEAPIFunctions........................................................................................... 227
C.4 CreatingPPPServerUserAccounts................................................................................... 230
C.4.1 AddingandReviewingUserAccounts........................................................................ 230
C.4.1.1 AddingaPPPUserAccount............................................................................. 231
C.4.1.2 SearchingforaPPPUserAccount..................................................................... 231
C.4.1.3 RemovingaPPPUserAccount......................................................................... 232
D HardwareAdaptationLayer (HAL)....................................................................................... 233
D.1 Overview................................................................................................................... 234
D.1.1 HALFunctionTypes............................................................................................. 234
D.1.2 ExternalCallsfromHALFunctions........................................................................... 234
D.2 Low-LevelLEDDriver(llUserLed)...................................................................................... 234
D.2.1 FunctionOverview............................................................................................... 234
D.2.2 Low-LevelLEDAPIFunctions................................................................................. 235
D.3 Low-LevelTimerDriver(llTimer)........................................................................................ 236
D.3.1 FunctionOverview............................................................................................... 236
D.3.2 Low-LevelTimerAPIFunctions................................................................................ 236
D.4 Low-LevelPacketDriver(llPacket)..................................................................................... 237
D.4.1 FunctionOverview............................................................................................... 237
D.4.2 Low-LevelPacketAPIFunctions.............................................................................. 238
D.5 Low-LevelSerialPortDriver(llSerial).................................................................................. 241
D.5.1 FunctionOverview............................................................................................... 241
D.5.2 Low-LevelSerialAPIFunctions................................................................................ 241
E Web ProgrammingwiththeHTTP Server............................................................................. 246
E.1 AddingWebContent..................................................................................................... 247
E.1.1 Operation......................................................................................................... 247
E.1.2 ConvertingStandardHTMLFiles.............................................................................. 247
E.1.3 DeclaringHTMLFilestoEFS.................................................................................. 247
E.1.4 CleaningupHTMLFiles........................................................................................ 248
E.2 WritingCGIFunctions.................................................................................................... 248
E.2.1 AddingFunctionstotheEFS................................................................................... 248
E.2.2 CGIFunctionDeclaration....................................................................................... 248
E.2.3 ParsingCGIFormData......................................................................................... 249
E.2.4 ParsingCGIMulti-PartFormData............................................................................. 249
E.2.5 SendingHTTP/HTMLReplies.................................................................................. 250
E.2.6 HTMLErrorResponse.......................................................................................... 251
E.3 HTTPAuthentication..................................................................................................... 252
E.3.1 AuthorizationRealms............................................................................................ 252
E.3.2 UserAccounts.................................................................................................... 253
E.3.3 DesignatingProtectedFiles.................................................................................... 253
E.4 CGIFunctionExample................................................................................................... 254
E.4.1 CreatetheHTMLPage......................................................................................... 254
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E.4.2 CreatetheBaseWEBPAGESourceFile..................................................................... 254
E.5 HTTPServerExportedFunctions...................................................................................... 256
E.5.1 CommonlyUsedStrings........................................................................................ 256
E.5.2 FunctionOverview............................................................................................... 257
E.5.3 HTTPServerExportedAPIFunctions........................................................................ 257
F BSDSocketsSupport........................................................................................................ 260
F.1 UsingBSDSocketsProvidedbySlNetSock.......................................................................... 261
F.2 ThingstoRememberAboutBSDCompatibility ...................................................................... 261
G IP Version 6(IPv6)StackAPI.............................................................................................. 262
G.1 Synopsis................................................................................................................... 263
G.2 APIFunctionsandDataStructures .................................................................................... 264
G.2.1 SocketSupportforIPv6........................................................................................ 264
G.2.2 Architecture....................................................................................................... 265
G.2.3 SocketOptions................................................................................................... 265
G.2.4 Daemon6......................................................................................................... 265
G.2.5 NettoolsApplications............................................................................................ 266
G.2.5.1 Telnet ....................................................................................................... 266
G.2.5.2 WebServer................................................................................................. 267
G.2.5.3 TFTP........................................................................................................ 267
G.2.5.4 DNSClient.................................................................................................. 267
G.2.6 ConfiguringtheIPv6Stack..................................................................................... 271
H RevisionHistory............................................................................................................... 272
H.1 RevisionList............................................................................................................... 272
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List of Figures
1-1. ComponentsofaNDK-EnabledApplication............................................................................ 12
3-1. RawEthernetBufferFormat.............................................................................................. 70
3-2. RawEthernetBufferFormat.............................................................................................. 72
A-1. NIMUArchitecture........................................................................................................ 177
A-2. VLANModulePlacementinNIMUEnabledNDKStack............................................................. 186
A-3. VLANExample............................................................................................................ 188
A-4. RawEthernetChannelManagerModuleinNDK .................................................................... 192
B-1. BasicHomeNetworkConfiguration.................................................................................... 198
B-2. PublicServersontheHomeNetwork.................................................................................. 202
C-1. StandardPPPFrameOverSerialLine................................................................................ 215
C-2. PPPFrameProcessedbyPPPAPI.................................................................................... 215
C-3. SerialInterface(SI)Abstraction......................................................................................... 215
G-1. NDKIPv6ArchitecturalBlockDiagram................................................................................ 263
G-2. InternalArchitectureBlockDiagramforSocketLayer............................................................... 265
G-3. IPv6StackInstantiationPlacement .................................................................................... 271
List of Tables
A-1. timer_tick................................................................................................................... 181
A-2. IOCTLCommands........................................................................................................ 185
A-3. SpecialCasecmd........................................................................................................ 185
A-4. UserPrioritiesforTrafficAgreement................................................................................... 188
H-1. DocumentRevisionHistory.............................................................................................. 272
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Preface
SPRU524K–May2001–RevisedOctober2017
Read This First
About This Manual
Thisprogrammer'sreferenceguidedescribesthevariousAPIfunctionsprovidedbytheNDKlibraries, and
isintendedtoaidthedevelopmentofnetworkapplications.It isthecentralreferencedocumentusedwhen
programmingthestack.Seethe TINetworkDeveloper'sKit(NDK)User'sGuide (SPRU523)tofamiliarize
yourselfwiththestacklibraries,NDKconfiguration,andusingthestack.
How to Use This Manual
Thisdocumentcontainsthefollowingchapters:
• Chapter1:Introduction summarizesthevariousAPIsetsdescribedintheNDKdocumentation.
• Chapter2:OperatingSystemAbstractionAPI describestheAPIusedbytheadaptationlayerto
accesstheoperatingsystem.
• Chapter3:SocketsandStreamIOAPI describesthefileandsocketsAPIfunctions.
• Chapter4:ConfigurationandInitialization describestheConfigurationManagerAPI, theXGCONF
configurationmethod,theNDKinitializationsequence,andtheNetworkControlmodule.
• Chapter5:NetworkToolsLibrary-SupportFunctions describesthenetworksupportfunctions
containedintheNETTOOLSlibrary.
• Chapter6:NetworkToolsLibrary-Services describesthenetworkserversandservicescontained
intheNETTOOLSlibrary.
• AppendixA:InternalStackFunctions containsapartiallistofinternalstackfunctionsprovidedto aid
inthecomprehensionofkernelorientedcalls.
• AppendixB:NetworkAddressTranslation describestheoptionalNetworkAddressTranslation
component,howtosetupvirtualnetworks, andprotocolproxies.
• AppendixC:Point-to-PointProtocol describestheoperationofthePPPandPPPoEsupportAPI
includedintheNDK,andhowtointerfacetoaserialdevice.
• AppendixD:HardwareAdaptationLayer(HAL) describestheoperationoftheHAL,andthe HAL
API functions.
• AppendixE:WebProgramming withtheHTTPServer describeshowtogetinformationfroman
embeddednetworkdevicethroughthewebserver.
• AppendixF:BSDSocketsSupport providespointerstotheBerkeleySoftwareDistribution(BSD)
API socketsupportlayer,whichisnowprovidedbySlNetSock,whichispartoftheSimpleLinkSDK.
• AppendixG:IPVersion 6(IPv6)StackAPI describestheAPIsanddatastructuresexposedbythe
IPv6stack.
• AppendixH:RevisionHistory describesthechangestothisdocumentsincethepreviousrelease.
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NotationalConventions www.ti.com
Notational Conventions
Thisdocumentusesthefollowingconventions:
• Programlistings,programexamples,andinteractivedisplaysareshowninaspecialtypeface.
• Insyntaxdescriptions,thefunctionormacro appearsinaboldtypeface andtheparametersappearin
plainfacewithinparentheses.Portionsofasyntaxthat areinboldshouldbeenteredasshown;
portionsofasyntaxthatarewithinparenthesesdescribethetypeofinformationthat shouldbe
entered.
• Macronamesarewritteninuppercasetext;functionnamesarewritteninlowercase.
NOTE: ThelocationofNDKfilesreferencedinthisdocumentwillvarydependingonthetypeof
installationyourperformedtoobtaintheNDKcomponent.IfyouinstalledaSimpleLink™
SDK,thefilesarelikelytobelocatedinyour<SDK_INSTALL_DIR>/sources/ti/ndk
directory.IfyouinstalledsomeothertypeofSDK,thefilesarelikelytobelocatedinyour
<NDK_INSTALL_DIR>/packages/ti/ndkdirectory.Forsimplicity,thisdocumentrefersto
thedirectoriesbeginningatthe/ti/ndklevel,whichiscommontoallinstallations.
Related Documentation From Texas Instruments
AdditionalinformationabouttheNDKcanbefoundinSPRU523(TINetworkDeveloper'sKit(NDK)User's
Guide.)andtheNDKcategoryoftheTIEmbeddedProcessorsWiki.If youhavequestions,youcanask
themontheforumfortheSDKthatcontainsyourNDKinTI'sE2Ecommunity.
Trademarks
SimpleLinkisatrademarkofTexasInstruments.
WindowsisaregisteredtrademarkofMicrosoft.
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