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Apple Network Setup manual OTCfgATalkGeneralATP, fDefaultRetryInterval, fDefaultReleaseTimer

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C H A P T E R 4

Network Setup Protocol Structures and Data Types

For a detailed description of ASP, see Inside AppleTalk, Second Edition.

No preference type is deﬁned for this structure. Instead, access this structure through the OTCfgATalkGeneral (page 145) structure, which has a preference type of kOTCfgATalkGeneralPref.

OTCfgATalkGeneralATP

The OTCfgATalkGeneralATP structure deﬁnes parameters for the AppleTalk Transaction Protocol (ATP) component of the AppleTalk protocol stack and is a sub-structure of the OTCfgATalkGeneral structure.

struct OTCfgATalkGeneralATP

{
UInt16	fVersion;
UInt16	fSize;
UInt32	fTSDUSize;
UInt32	fDefaultRetryInterval;
UInt32	fDefaultRetryCount;
UInt8	fDefaultReleaseTimer;
Boolean	fDefaultALOSetting;
};

Field descriptions

fVersion	Must be 1.
fSize	Must be sizeof(OTCfgATalkGeneralATP).
fTSDUSize	The maximum amount of data that packets of this protocol

can carry. The default is 578.

fDefaultRetryInterval

The default retry interval in milliseconds. By default, this value is 2000.

fDefaultRetryCount The default retry count. By default, this value is 8.

fDefaultReleaseTimer

The default release timer. The default value is zero. This ﬁeld has the same format as ATP_OPT_RELTIMER which is described in Inside Macintosh: Networking with Open Transport.

150Protocol Structures

Image 150

Apple Network Setup manual OTCfgATalkGeneralATP, fDefaultRetryInterval, fDefaultReleaseTimer

Contents

I N S I D E M A C I N T O S H Network Setup Apple Computer, Inc 2000 Apple Computer, Inc. All rights reserved Using Network Setup ContentsAbout Network Setup About This ManualNetwork Setup Reference ChapterChapter 4 Network Setup Protocol Structures and Data Types Glossary IndexPage Figures, Tables, and Listings About Network SetupUsing Network Setup ChapterPage About This Manual Conventions Used in This ManualInside Macintosh Networking with Open Transport For More InformationInside AppleTalk, Second Edition Open Transport Advanced Client Programming, available atAbout Network Setup Network Setup ArchitectureThe architecture shown in Figure 1-1 had a number of drawbacks The following key points are to be taken from Figure Inside the Network Setup Library High-level framework About Network Setup Figure 1-4 Structure of the Network Setup LibraryInside the Network Setup Library Mid-level database OTCfgNetwork Setup Database Fundamentals Database StructureDatabase Structure Example 18 Network Setup Database Fundamentals About Network SetupFigure 1-5 Sample organization of the default area LocalTalk for Printer AppleTalk networkork protocol entityDatabase Operations Figure 1-6 shows this process diagrammatically Legacy Issues Preference CoherencyLegacy Synchronization Algorithm Network Setup Version History VersionMac OS version About Network Setup 24 Network Setup Version HistoryC H A P T E R Using Network Setup Opening and Closing the Network Setup DatabaseOpening the Database for Reading Opening the Database for Writing Using Network Setup Listing 2-1 Opening the database for reading26 Opening and Closing the Network Setup Database Using Network Setup Opening and Closing the Network Setup DatabaseListing 2-2 Opening the database for writing Closing the Database After Reading Closing the Database After WritingListing 2-4 Closing the database after writing Using Network SetupOpening and Closing the Network Setup Database err = OTCfgCommitAreaModificationsdbRef, readArea, writeAreaWorking with Entities Listing All EntitiesOSType entityClass OSType entityType CfgEntityRef **entityRefs kCfgClassAnyEntity and kCfgTypeAnyEntity, respectivelystatic OSStatus MyGetEntitiesListCfgDatabaseRef dbRef, CfgAreaID area CfgEntityInfo **entityInfosUsing Network Setup 32 Working with EntitiesThe next routine, shown in Listing 2-6, opens the database for reading, gets the entity references for all of the TCP/IP network connection entities in the default area using the MyGetEntitiesList routine in Listing 2-5, and prints their user-visible names. This routine calls a routine, MyGetEntityUserVisibleName, which hasn’t been documented yet. It is shown in Listing 2-9 in the section “Reading and Writing Preferences” page Reading and Writing Preferences Finding an Active EntityListing 2-7 Reading a ﬁxed-size preference Reading Fixed-size PreferencesUsing Network Setup Reading and Writing PreferencesThe sample shown in Listing 2-7, which opens and closes the entity before reading each preference, is implemented in an inefﬁcient manner for the sake of clarity. If you are reading multiple preferences, it is more efﬁcient to open the entity once. Then read the preferences by calling OTCfgGetPrefs or OTCfgSetPrefs multiple times and close the entity when you’re done Reading Variable-size Preferences assertdbRef != nil assertentity != nil assertname != nilUsing Network Setup 38 Reading and Writing PreferencesWriting Preferences Iterating the Preferences in an Entity Using Network Setup Reading and Writing PreferencesWorking with Sets Finding the Active Set Entity The MyFindActiveSet routine in Listing 2-13 implements the ﬁrst two steps. It starts by getting a list of all of the set entities by calling the MyGetEntitiesList routine Listing 2-5. Then MyFindActiveSet iterates through all of the set entities, reading the kOTCfgSetsStructPref preference of each set entity. That preference maps to the CfgSetsStruct structure, which contains an fFlags member. One bit of the fFlags member, kOTCfgSetsFlagActiveMask, indicates whether this set entity is the active set entity. If it is, the routine breaks out of the loop and returns the set’s entity reference to the caller breaks out of the loop and returns the found entity Using Network Setup Listing 2-14 Finding the active entity of a given class and type46 Working with Sets Using Network Setup Listing 2-15 Finding the active TCP/IP entityWorking with Sets Areas and Sets Protocol-speciﬁc Topics TCP/IP Notesaccess the preference in its packed format Using Network Setup Protocol-speciﬁc Topicscursor = UInt8 * packedPref Using Network Setup 52 Protocol-speciﬁc TopicsUInt8 *cursor Remote Access Notes Modem Notes OTCfgRemoteClientLocks pageNetwork Setup and Third-party Protocol Stacks Notes for Third PartiesStoring Third-party Preferences in Apple Entities Using Network Setup 56 Notes for Third PartiesC H A P T E R Network Setup Reference Network Setup FunctionsOpening and Closing the Network Setup Database OTCfgOpenDatabase OTCfgCloseDatabaseManaging Areas OTCfgGetCurrentArea OTCfgSetCurrentArea OTCfgOpenAreaOTCfgCloseArea OTCfgBeginAreaModiﬁcations function resultOTCfgCommitAreaModiﬁcations function resultfunction result OTCfgAbortAreaModiﬁcationsOTCfgIsSameAreaID OTCfgAbortAreaModifications returns kCfgErrAreaNotFoundOTCfgGetAreaName function resultOTCfgSetAreaName function resultOTCfgGetAreasCount OTCfgGetAreasListfunction result that are available. On output, itemCount points to the number of function resultOTCfgCreateArea function resultOTCfgDuplicateArea function resultManaging Entities OTCfgDeleteAreaOTCfgGetEntitiesCount OTCfgGetEntitiesList entityType On input, a value of type CfgEntityType that speciﬁes the type that is to be matched. To specify all types, set entityType to kCfgTypeAnyEntity. For a list of possible types, see “Entity Classes and Types” page OTCfgIsSameEntityRef OTCfgCreateEntityOn input, a value of type CfgDatabaseRef page 98 that function resultfunction result OTCfgDeleteEntityOTCfgDuplicateEntity const CfgEntityRef* entityRef, const CfgEntityRef* newEntityRefOTCfgGetEntityLogicalName OTCfgGetEntityName function result NoneOTCfgSetEntityName function resultOTCfgGetEntityArea OTCfgChangeEntityAreafunction result Managing Preferences function result NoneOTCfgOpenPrefs function resultOTCfgClosePrefs OTCfgGetPrefsSizeOTCfgGetPrefs function resultvoid* data, ByteCount length OTCfgSetPrefs function resultconst void* data, ByteCount length OTCfgGetPrefsTOCCount OTCfgGetPrefsTOC OTCfgGetDefault OTCfgDeletePrefsOTCfgGetTemplate Preference Utilities function resultOTCfgEncrypt OTCfgDecryptInstalling and Removing a Notiﬁcation Callback OTCfgInstallNotiﬁerOn input, a value of type CfgDatabaseRef page 98 that function resultApplication-Deﬁned Routines OTCfgRemoveNotiﬁerfunction result Network Setup Structures and Data Types Notiﬁcation Callback RoutineCfgDatabaseRef CfgAreaIDCfgEntityRef CfgEntityInfoField descriptions CfgEntityAccessID CfgPrefsHeaderCfgResourceLocator CfgSetsStructFlags for this set. For possible values, see the enumeration CfgSetsElement CfgSetsVectorNetwork Setup Constants Entity Classes and TypesWildcard Classes and Types Common Preference Types Per-connection Preference TypesGlobal Preference Types Set Entity Preference Types Backward Compatibility Preference TypesGlobal Backward Compatibility Preference Types Invalid Area ID OTCfgUserMode PreferenceResult Codes Network Setup Protocol Structures and Data Types Protocol StructuresTCP/IP Structures OTCfgTCPInterfacesUnpacked modulekMaxModuleNameSize OTCfgTCPInterfacesPacked OTCfgTCPInterfacesPackedPartpartsizeofOTCfgTCPInterfacesPackedPart OTCfgTCPDHCPLeaseInfo OTCfgTCPDNSServersList OTCfgTCPLockslockAdminDomainName lockLocalDomainNamelockDNSServersList Set to TRUE to lock the “Router address” text ﬁeld OTCfgTCPRoutersList OTCfgTCPRoutersListEntryOTCfgTCPRoutersListEntry page 119 structures OTCfgTCPSearchDomains OTCfgTCPSearchListOTCfgTCPUnloadAttr Apple Remote Access Structures OTCfgRemoteAlternateAddress OTCfgRemoteApplicationOTCfgRemoteARAP OTCfgRemoteClientLocks useVerboseLogLockregUserOrGuestLock The “Allow error correction and compression in modem” connectAutomatically OTCfgRemoteClientMiscOTCfgRemoteConnect canInteractissueConnectedReminders allowModemDataCompressionOTCfgRemotePPPConnectScript If Notification Manager reminders are enabled, the number OTCfgRemoteDialAssist isAssisted to 1 to use Dial Assist. When isAssisted is set toOTCfgRemoteDialing additionalPtrmade. Only valid if dialMode is not kOTCfgRemoteRedialNone OTCfgRemoteIPCP OTCfgRemoteLCP lowerLayerName36kOTCfgRemoteAcceptedVersion. When reading the version OTCfgRemotePassword OTCfgRemoteLogOptionsOTCfgRemoteServer configCountconfigIDs1 OTCfgRemoteNetworkProtocol OTCfgRemoteServerPortstruct OTCfgRemoteServerPort serialLayerNamekMaxProviderNameSizeNetwork Setup Protocol Structures and Data Types OTCfgRemoteTerminalAccess mode flags. For possible values, see the Must be TRUEOTCfgRemoteUserMode OTCfgRemoteX25 Modem Structures OTCfgModemGeneralOTCfgModemApplication OTCfgModemLocks AppleTalk Structures OTCfgATalkGeneral OTCfgATalkGeneralAARP OTCfgATalkGeneralADSP fMaxConsecutiveDataPacketsPage OTCfgATalkGeneralASP OTCfgATalkGeneralATP fDefaultRetryIntervalfDefaultReleaseTimer Protocol Structures OTCfgATalkGeneralDDPNetwork Setup Protocol Structures and Data Types fMyZonekZIPMaxZoneLength+1The maximum amount of data that packets of this protocol OTCfgATalkGeneralNBP fDefaultTickleRetries OTCfgATalkGeneralPAPfDefaultTickleInterval fDefaultPAPEOMEnabledOTCfgATalkGeneralZIP OTCfgATalkLocks OTCfgATalkNetworkArchitecture Constant descriptions kOTCfgATalkPortLockMaskInfrared Structures OTCfgATalkPortDeviceTypeProtocol Constants and Other Data Types OTCfgIRGeneral“AppleTalk Constants and Other Data Types” page TCP/IP Constants and Other Data TypesNetwork Setup Protocol Structures and Data Types “Infrared Constants and Other Data Types” page0x0002 Masks for the kOTCfgProtocolOptionsPref PreferencekDontShutDownOnARPCollisionMask = 0x0004OTCfgTCPConﬁgMethod Apple Remote Access Constants and Other Data Types ARA Per-Connection Preferences TypesThe preference type for the OTCfgRemoteDialing page 131 structure Network Setup Protocol Structures and Data TypesThe preference type for the OTCfgRemoteARAP page 124 structure The preference type for the OTCfgRemoteClientLocks page 125 structureThe preference type for the OTCfgRemoteConnect page 127 structure ARA Global Preference Types OTCfgRemotePPPConnectScriptOTCfgRemoteProtocol OTCfgRemoteLogLevel OTCfgRemoteDialModeOTCfgRemoteAnswerMode OTCfgRemoteNetworkProtocolOTCfgRemoteNetAccessMode Modem Constants and Other Data TypesModem Global Preference Types OTCfgModemDialingToneModeAppleTalk Constants and Other Data Types Per-connection AppleTalk Preference TypesInfrared Constants and Other Data Types Global AppleTalk Preference TypesOTCfgIRPortSetting Glossary maximum transmission unit MTU The maximum number of bytes in a packet media access control address The six-byte Transmission Control Protocol/Internet Protocol A connection-oriented transport-layer Internet protocol that provides reliable full-duplex data transmission Index Page legacy preference ﬁles named areas network connection entities 16 Network Setupnotiﬁcation routine installing 94 removing mid-level database 15 modem constants 170 multihoming 12Page TCP/IP constants 160 preferences set entities 16 active, number of 43 usingsetting entity names 81 structures temporary area 20 third-party developers 55 type, entityI N D E