Prosys Sentrol 7 - Release Notes

Version 1.0.4.13 of the UaStack DLL

Fixed faulty naming for rejected certificates

Fixed: Support Optional structure fields

New: TUaFileTypeOpenMode / TUaFileTypeOpenModeSet

New: TUaAddressSpace.TypeDefinitionIdOf

Fixed: Don’t throw error for incorrect SignatureData.Algorithm in ActivateSession (interoperability issue)

Fixed: Invalid ServerSignature.Algorithm was occasionally returned in CreateSessionResponse

New: TUaSubscriptionManager.MaxMonitoredItemQueueSize to allow configuration - default also reduced from 1000000 to 10000

New (UaSampleClient): UaSampleClientForm.FileTypeXxx to show how to use FileType in an OPC UA client application

Changed (UaSampleServer): Initialize UaSampleServerForm.UaServer from properties instead of in Initialize (as much as possible)

Improved (UaSampleServer & UaCppSampleServer): Logging details for Log View

Fixed: 64-bit C++ libraries for OPC UA Client and Server development.

Fixed: TUaCppSampleServerForm::UaServerValidateCertificate

Version 1.0.4.12 of the UaStack DLL

SECURITY FIX: (CVE-2023-41151)

Fixed: Encoding and decoding of PermissionType (used as part of the new (User)RolePermission attributes in variables)

New: TUaServer.OnAfterCreateSession, OnAfterActivateSession & OnAfterCloseSession

New: TUaServer.OnAfter(Create/Modify/Delete)Subscription

New: TUaServer.OnAfter(Create/Modify/Delete)MonitoredDataItem

New: TUaServer.OnAfter(Create/Modify/Delete)MonitoredEventItem

New: TUaSubscriptionManager.GetSubscriptions

New: TUaSubscriptionManager.OnAfterCreateSubscription & OnAfterDeleteSubscription

Fixed: Handling of PublishRequest timeouts; the UaServer was not sending any responses in this case, effectively breaking subscription monitoring in the clients.

Fixed: Interpret PublishRequest timeout of 0 as infinite, instead of immediate. Breaks connections with KepServerEX clients, for example.

Fixed: CheckInputArguments for array elements

Fixed: AV/OutOfMemory errors in CloseSession

Fixed: Memory leak from TUaModelInfo

New: TUaSampleServerForm.SessionTab - and logic based on the new TUaServer events to show how to track sessions and subscriptions in the UI

Small refactorings

Fixed: WriteDynamicStructureValue C++ example

Changed: Added BuildDate to TPsVersionInformation

Fixed: Access Violation in TPsOPCServer.ReadItemValues

Fixed: OPC DA Server (TPsOPCProvider) could throw an unexpected exception for items that are not found from the server

Fixed: TPsOPCProviderGroup.ForEachItem; Exceptions from empty OPC DA writes causing unexpected problems.

Fixed: RangeCheck error in TPsOPCTransaction - ID is Cardinal, not Integer!

Fixed: RangeCheck error in TPsBitSet

Version 1.0.4.11 of the UaStack DLL and UaNodeSet

Changed: Store rejected certificates using a filename that contains the ApplicationName (as the SDK does anyway)

Security Update: OpenSSL Libraries updated (see redist/OpenSSL_CHANGES)

BREAKING CHANGE: properties and parameters of type TUaCertificate replaced with IUaCertificate in TUaSecureIdentity and most methods of TUaCertificateStore, except NOT in the OnValidateCertificate event of TUaClient and TUaServer (to avoid compatibility issues).

New: IUaCertificate

New: IUaPrivateKey

New: TUaNodeId.AsByteString

New: TUaOperationLimits.OnChange

New: ToBuilder method added to every specific OPC UA Structure interface type.

Fixed: TUaVariant.GetArrayLength for empty arrays.

Fixed: EInvalidPointer, when encoding DynamicStructures with String TypeIds

Fixed: TUaArgument.GetFieldValues

Fixed: TUaVariant.Create<T> with Integer subtypes (e.g. TUaValueRank)

Fixed: TUaVariant.Equal with structures

Fixed: TUaVariant.AsType<T> with structure types and null values

Fixed: TUaStructureXBuilder.Init with nil arguments

Fixed: Use 'UTCNow' instead of 'Now' in TUaVariableType.DataValue

New: Try to recreate failed subscriptions after reconnect (always)

New: IUaSubscription.RecreateFailedItems to define whether to try creating failed monitored items again after reconnect (on by default)

New: TUaClient.SecurityTokenLifetime (now configurable)

Fixed: Handle ServiceFaults for PublishRequests

Fixed: Improved thread safety for subscription management

Fixed: TUaAddressSpaceBrowser design time behavior

Fixed: TUaConnector & Subscription.TransferTo (mem leak)

Changed: Try to create MonitoredItems also with NullNodeId or Invalid Attribute

SECURITY FIX: TUaServer to return Bad_SecurityChecksFailed for all validation errors (not more specific errors)

New: TUaSessionManager.GetSessions & CloseSession

New: TUaSubscriptionManager.Min/MaxPublishingInterval

New: TUaOperationLimits.OnChange

New: TUaAlarmConditionType.Input

New: Implement RegisterNodes and UnregisterNodes in UaServer (Naive interoperability fix)

Fixed: TUaNodeManagerUaNode.RemoveNode to remove child nodes as well

Fixed: Event objects not properly removed after sending

Fixed: TUaServer.OperationLimits

Fixed: Access Violation in TUaDataType.InitStructureDefinition for BaseDataType

Fixed: Do not reinitialize SessionManager properties in TUaServer.Init

Fixed: Initialization of States of ConditionTypes

Fixed: Call TUaServer.OnCreateSession only after the session has been validated

Fixed: Initialization of BuildInfo as part of ServerStatus

New: Log view in UaSampleClient

New: UaSampleServer to close session when client cert rejected (to demonstrate the new CloseSession)

New: TUaSampleServerForm.InitBuildInfo

Removed: TUaSampleClientForm.UseOfDiscoveryServerSelected

Fixed: ApplicationType of the samples

Fixed: TMonitoredItemListItem.MonitoredItem wrapping Data instead of using a private field: avoids updates stopping in some UI situations

Small refactorings

Fixed: WriteDynamicStructureValue C++ example

Fixed: TPsChart draw spec lines correctly in Vertical mode

New: PsUtils.URLEncode

New: PsUtils.DateTimeToISO8601

No changes

No changes

No changes

Removed obsolete unit ProsysOPC.UaClient.Nodes

New: TUaConnector

Fixed: Memory leaks in node instantiation cache (were not released when applications close)

New: Support DataTypeDefinition Attribute instead of DataTypeDictionary, if the Nodesets use those

Optimised TUaNode.HasReference to enable thousands of references in nodes without extra performance issues

Fixed ProsysOPC.UaSampleClient: Show the Names of custom ReferenceTypes in ReferenceListview

Rearranged legacy Sentrol component samples

Renamed: EventLogSample to EventLog

Renamed: OPCSample to OPCSampleGUI

Renamed all forms in the sample projects to have unique names

New: UaSampleGUI

Legacy Tutorial rewritten with OPC UA examples and projects.

Removed old Delphi project files - if you still need them, please let us know.

Renamed all forms in the Tutorial projects to have unique names

Updated: LessonUa4_Storage examples - each driver (DbX, ADO, IBX) initialization to it’s own form

New: LessonUa2_UaConnector

New: LessonUa3_Trends

New: LessonUa9_CreateComponentsInCode

SECURITY FIX (OpenSSL Security Advisory [7th February 2023, except CVE-2022-4304]): OpenSSL libraries that are included are updated to version 1.0.2v-dev (1.0.2.22, build date 2023-02-21) - this is our own build that fixes these security issues. UPDATE your own OPC UA applications to use this one or the official version 1.0.2zg. See the 'redist' folder in the installation for more details.

RENAMED: TUaTypeDictionary.Clear renamed from ClearCaches

New: TUaTypeDictionary.Init

Fixed: TUaGlobalNamespaceTable.ParseQualifiedName to use 0 Namespace if not specified

Fixed: TUaVariant.LessThanOrEqual

New: TUaVariant.AsDataType

New: TUaVariant.Create with Variant and DataTypeId

Fixed: Improved support for structure arrays

Fixed: Handling of empty ByteStrings

Fixed: Thread safe TUaStack.Initialiaze/Finalize

Fixed: Custom structure values in event fields did not work

New: IUaSubscription.ConditionRefresh

New: TUaClient.Call with a single argument

New: TUaClient.Call with array of Variant

Fixed: Refresh conditions in TUaEventManager.Refresh

Fixed: ServerStatus not updated at Shutdown

Fixed: UaSampleServer to use default RetransmissionQueue (100)

Fixed: Subscription handling performance improved

Fixed: UaSampleServer: set MyAlarm.Retain in (In)ActivateAlarm

New: Dynamic.Boolean in UaSampleServer to change value between odd/even numbers

Fixed: UaSampleClient EventView

Fixed: Create only one MonitoredEventItem

New: EventViewRefreshButton & Action

New: UaSampleClient.SearchNodeAction

New: GetBrowsePath & ExpandBrowsePath

SECURITY FIX (CVE-2021-3541): TPsSAXParser: Fix theoretical vulnerability to ParameterLaughs by using the 'prohibit-dtd' flag with the MSXML parser and by preferring MSXML version 6.0 over 3.0

SECURITY FIX (CVE-2021-26414): Initialize DCOM by default with 'PsInitComSecurity(alPacketIntegrity, ilIdentify)'

IMPORTANT: UaStack DLL Version 1.0.4.10 - UPDATE your OPC UA applications to use this one.

IMPORTANT: Opc.Ua.Nodeset2.xml version 1.04.10 - UPDATE your OPC UA servers to use this one.

IMPORTANT: Opc.Ua.Di.Nodeset2.xml version 1.03.1 - UPDATE your OPC UA servers to use this one, if you use it.

SECURITY FIX (CVE-2021-42577): A malformed OPC/UA message abort packet makes the client crash with a NULL pointer dereference.

SECURITY FIX (CVE-2021-45117): Allows a malicious server to produce a null pointer error in the client.

Fixed: Support Certificate Chains

New: UaStack.UaStackTraceLevel and UaStackChangeTraceLevel

New: TUaStack with properties for Stack Configuration to enable initialization.

SECURITY FIX (CVE-2022-0778): OpenSSL libraries that are included are updated to version 1.0.2v-dev (1.0.2.22) - this is our own build that fixes the latest security issues, the official version 1.0.2zd has the same fix included - UPDATE your OPC UA applications to use either one. See the 'redist' folder in the installation for more details.

NEW UNIT: ProsysOPC.UaBase.Types - base structure types are moved in here from ProsysOPC.UaBase, so you will need to add it to most of your uses declarations.

Fixed: SecurityAlgorithm.RsaOaep256 had wrong URI

Fixed: AV when moving a certificate from rejected to trusted certificates

Fixed: TUaDynamicStructure.IsPresent

Fixed: TUaDataValue.ValueAsString to not use Quotes around string values

Fixed: TUaAddress to correctly parse port number from an IPv6 address

Changed: TUaNamespace.Create(NamespaceURI) is now a static method, instead of a constructor, ensuring the singleton instances are always used from the GlobalNamespaceTable

Changed: TUaVariant.ToString to use QuotedStr only when specifically instructed.

New: TUaEUInformationTable

New: ProsysOPC.UaBase.TRUSTED_AND_VALID constant

Changed: Renamed TUaContinuationPoint to TUaBrowseContinuationPoint

New: TUaHistoryContinuationPoint

New: TUaNode.NodeIdFormat & NodeIdArrayElementFormat

New: NullNamespace - used for empty NamespaceURI

New: Support DataTypeDefinition Attribute instead of DataTypeDictionary, if the server supports that for custom Structure types.

NEW UNIT: ProsysOPC.UaServer.Types - includes Delphi/C++ Classes that implement all OPC UA standard types; ObjectTypes, VariableTypes and DataTypes (most standard DataTypes are still included in ProsysOPC.UaBase.Types (see above), though)

NEW UNIT: ProsysOPC.UaServer.Models

NEW UNIT: ProsysOPC.UaServer.Instantiation

Fixed: ArrayDimensions data type to UInt32 (was Int32)

Fixed: Use default values for RequestedParameters if not defined (UaExpert Performance View problem)

Fixed: Do not enable MonitoredEventItem for a Variable node or Object Node without EventNotifier including SubscribeToEvents.

New: Implemented HistoryManager.HistoryRead and add OnReadRaw

New: TUaServer.NodeBuilderConfiguration

New: TUaSessionManager.MaxBrowseContinuationPoint/MaxHistoryContinuationPoint

New: TUaNodeManagerUaNode.CreateInstance

New: TUaNodeManagerUaNode.CreateEventInstance

New: TUaNodeManagerUaNode.CreateNodeBuilder

New: TUaNodeManagerUaNode.NodeBuilderConfiguration

New: TUaNodeManagerUaNode.AutoExposeElements

New: TUaNodeManagerUaNode.AutoExposeArray

New: TUaNodeManagerUaNode.AutoExposeWithOwnNamespace

New: TUaNodeManager.CreateNodeId, CreateNodeIdForArrayElement, NodeIdFormat, NodeIdForArrayElementFormat

New: TUaNode.CreateNodeId, CreateNodeIdForArrayElement

New: TUaNode.GetAttributes

New: TUaNode.AddInstance

New: TUaObject.TriggerEvent

New: Read Value fields from the Nodeset files to the respective Variable nodes

Changed: SampleServers use a separate NodeManager for Types that they load from SampleNamespace.xml and Instances that they create

New: MyHistorian and CppMyHistorian in the ProsysOPC.UaSampleServer and UaCppSampleServer projects

New: TUaSampleServerForm.MyAlarm

New: TUaSampleServerForm.CreateAnalogItem

New: Toggle Tracing for the UaStack with Ctrl+Shift+T / Debug Level Tracing with Alt+Shift+T

Updated to reflect the changes

More sample code, especially for C++

New: TPsStringList.CSVPrefix

Fixed: TPsStringTree.Prefix is consistently used whenever saving and loading the tree from a stream or file

Version: 1.0.4.3

Fixed: Possible crash in OpcUa_BinaryDecoder_ReadNodeId

Fixed: Socket options for Receive of Send Buffer sizes are not set to 65536 anymore. This was causing strange 5 second delays at some client connections.

Fixed: Encode Boolean True as 01 instead of FF

Fixed: Convert OPCUA_DateTime=0 (1/1/1601) always to TDateTime=0 (30/12/1899) - was converting to a negative value corrersponding to (1/1/1601)

Fixed: Encoding and decoding field values of custom structure data types

Fixed: UaVariantToString

Fixed: Memory management and encoding arrays

Fixed: Handle decoding errors of DataValues and set the StatusCode respectively to Bad_DecodingError instead of failing to decode complete messages (Read or DataChange, for example)

Fixed: Variant values of OPC UA Float DataType were converted to Double instead of Single

Fixed: Support arrays of Variant values

Fixed: TUaCertificate.ParseCertificate

Changed: Array properties in structures available as TArray<> instead of an indexed Delphi array property.

Improved: Validate FieldName and DataType in DynamicStructureBuilder.SetFieldValue()

Improved: New optional parameters for KeySize and ValidDays in TUaApplicationIdentity.LoadOrCreateCertificate

New: TUaVariant.AsFloat (returns the value as Single)

New: IUaStructureBuilder ("renamed" from TUaStructure.IBuilder) and similar for every concrete structure data type

New: IUaDynamicStructureBuilder ("renamed" from TUaDynamicStructure.IBuilder)

New: IUaDynamicStructure.ToBuilder and similar to every concrete structure data type (to create a new builder initialized with the current values)

New: IUaDynamicStructureBuilder.AcceptNulls

New: IUaDynamicStructureBuilder.Init

New: IUaStructure.SetFieldValue (generalized from IUaDynamicBuilder)

New: Validate array elements of structure fields

New: Renew expired certificate, when TUaApplicationIdentity.LoadOrCreateCertificate is called with 'EnableRenew = True' - Really? :)

New: TUaCertificateStore.MaxRejected (to limit worst case scenarios)

New: TUaSecureIdentity.ToString

New: TUaUserIdentity.ToString

Fixed: Memory leak related to subscriptions (PublishResponses)

Improved: Raise exception on bad status code for single read in TUaClient.Read

Improved: More clear Exception messages for failures in Write, Call and HistoryRead

Fixed: Update individual node values to ServerStatus when the value is changed

Improved: TUaNode.AddReference: better validation

Renamed: TUaVariable.AddNotifyProcedure to AddValueChange

New: TUaVariable.OnValueChange

New: TUaNode.HasReference with additional optional parameters

New: TUaServer.Shutdown

New: TUaServer OnRegisterServer and OnShutdown events

New: TUaServer events for Session creation and activation

New: TUaServer.OnValidateUser ("copy" of TUaSessionManager.OnValidateUser)

New: TUaNodeManager.OnAddNode, OnRemoveNode

New: TUaNodeManager & TUaEventManager events for monitored item creation, modification and removals

Fixed: TUaSampleServerForm.MyNodeManagerBrowse did not return any value

Changed: Request both timestamps for MonitoredItems in the SampleClient

New: TUaSampleServerForm.UpdateMyStructureValue

New: Handlers for the new TUaServer events in the UaSampleServer

New: HistoryReadEventsButton in LessonUa1Client project

Improved: TPsSaxParser with better messages for XML parsing errors (used by TUaServer for loading nodeset files)

New: TPsOPCConnector.InactivateItemsOnError & TPsOPCGroup.InactivateItemsOnError

Fixed: Boolean values were kept as Byte values when coming from the UaStack

Fixed: Monitoring ExpandedNodeId values

Fixed: Variant array elements of varOleStr were not supported

Fixed: Validate that ApplicationDescription is initialized (it must still be initialized in code)

Changed: Parameter order and default options for TUaClient.HistoryReadXxx

New: UaStackUseDelphiMemoryFunctions - allows switching the stack to use it’s own memory manager (by setting this to False)

Removed: TUaDataValue.Create(Integer, …​) removed due to ambiguousness

New: Equals method to all record types, to overcome a C++ compiler bug for Equal operator

New: IUaNamespaceTable.ParseQualifiedNameArray & QualifedNameArrayToString

New: IUaNamespaceTable.QualifiedNameToString (alias to UaQualifiedNameToString)

Fixed: Validate that the certificate and private key are set, if they are required in TUaClient

Fixed: MemLeak in TUaClient.Reconnect

Fixed: exceptions raised in TUaVariable.OnWriteValue will cancel the write and respond with a statuscode to the client

Fixed: Prefer IPV4 for client socket connection (to enable connection to servers that don’t support IPV6; 'localhost' in Windows 10 maps to IPV6 by default)

Fixed: Reading QualifiedNames with invalid NamespaceIndex

Changed: TUaMonitoredDataItem.Create param changes

Changed: TUaAddressSpace.Browse with default parameter values

New: IUaSubscription.GetItems, GetDataItems & GetEventItems

New: TUaSubscription.Create (overload) without arguments (to enable call without args in C++)

New: ProsysOPC.UaClient.Libs.h (to help importing the necessary libs to C++ Builder apps - see the UaCppSampleClient project for an example)

Fixed: Memory leak while loading SampleNamespace.xml

Fixed: Do not allocate window handle for TUaServer in a DLL

Fixed: TUaServer always creates PKI directory under application

Improved: Check AccessLevel in TUaVariable.WriteAttribute for Value

Changed: Made TUaNode.WriteAttribute protected to avoid it being used by the application

New: ProsysOPC.UaServer.Libs.h (to help importing the necessary libs to C++ Builder apps - see the UaCppSampleServer project for an example)

Fixed: AV in UaSampleClient

Scale resized dialog buttons for High-DPI in the certificate validation prompt

New: LessonUa1_UaClient project

Online Client Tutorial updated to refer to the tutorial project, plus a few details clarified. New C++ sample code sections added as well.

Changed: TUaDataValue, TUaStatusCode, TUaLocalizedText, TUaQualifiedName, TUaNodeId & TUaDiagnosticInfo - contructors changed to static class methods for better C++Builder support. In Delphi, they are still used the same way (for example, 'LT := TUaLocalizedText.Create('Text');' whereas in C++ you must call the Create method, instead of using the 'new' operator. See the updated UaCppSampleServer.

Fixed: Make 'Set' types available in C++ (new generated source file: SdkBitSetEnums.inc)

Fixed: Handling of Boolean data in TUaVariant using Delphi enumeration type info (to enable use of string constants TUaVariant.AsString

Fixed: Details of enumeration value handling in TUaVariant)

Fixed: Handling of ByteString data in TUaVariant in C++ applications

Fixed: TUaVariant.TypeKind & TypeName in case the Value is not set.

New: TUaClient.WriteValues with TArray<TUaDataValue>

Fixed: Reading and writing Boolean, Int64 & UInt64 arrays

Fixed: Asymmetric Signature creation and definition of used Algorithm for ActivateSession was failing occasionally leading to connection problems in secure connection modes.

Fixed: Asymmetric Signature Algorithm was not defined in CreateSessionResponse

Security Fix: Asymmetric Signature at ActivateSession was not verified.

The C++ samples were updated according to the changes to struct types.

Make the Delphi Sample Server to register with the Local Discovery Server by default.

Delphi Sample Client to use design time event handlers

Fixed: Sample Namespace URL in UaCppSampleServer

Fixed: PsADOConnectionDlgs to compile (proper use of ConfirmDlg, etc)

New: Support for Multidimensional arrays & DynamicStructures in variants

New: IUaAddressSpace, a common interface for TUaClientAddressSpace and TUaServerAddressSpace

New: TUaTypeDictionary, a common class that handles custom structure types in both the server and client side

New properties: IUaDynamicStructure.FieldValues & Specification (replacing methods SetFieldValue, GetFieldValue & GetSpecification)

New: TUaNodeManager.GetType & TUaServerAddressSpace.GetType

New: TUaType.AddSubtype

New: TUaServer.ReadValue & ReadValues

New: TUaDynamicStructureBuilder

New: IUaDynamicStructure.UnionValue, SwitchFieldName, StructureType, IsPresent

Removed: IUaDynamicStructure.GetBinaryEncodeId & GetEncodedFields

New: TUaNode.CreateNodeId

New: NormalizedNamespaceURI

New: UaStackInitialize & UaStackFinalize (called automatically from ProsysOPC.UaClasses)

Fixed: GetTypeId method made public in all structure implementations

Fixed: libeay32.pas was missing from the source distribution

Fixed: Stack finalization in context of DLL projects that use the Stack DLL. uastack_32.dll and uastack_64.dll have been rebuilt to fix this.

New: TUaLocalDiscoveryClient

New: TUaDiscoveryDialog

New: IUaApplicationDescriptionEx

Fixed: IUaSubscription.OnAlive

Changed: TUaDataChangeEvent (used in IUaSubscription and IUaMonitoredDataItem) type of Sender parameter changed from TObject to IUaMonitoredDataItem

Changed: TUaEventNotificationEvent (used in IUaSubscription and IUaMonitoredEventItem) type of Sender parameter changed from TObject to IUaMonitoredEventItem

Fixed: Usage of RequestHeader in TUaClient methods

New: RequestHeader as optional parameter to TUaClient methods Read, Write & Call

Fixed: Disconnect if TUaClient.Connect fails

Fixed: TUaClient.Reconnect with subscriptions

Fixed: Clear up of CallRepublish in case of ServiceFault

New overloads: TUaNode.AddNode/Instance/Property which use CreateNodeId to generate a new NodeId with a default rule

New: TUaServer.RegisterServer

Fixed: Load models that have nodes in "wrong order", i.e. Parents after children

New: EUaDiscoveryError

Fixed: Address Space View Refresh (in UaSampleClient)

Fixed: Method call dialog in UaSampleClient

OPC UA Client

OPC UA Server

OPC UA 1.04 UA TCP Transport

OPC UA 1.02-1.04 Security

Session management

Subscription management, including data and even monitoring

Identity management

Historical Access (client side)

Method calls

Address Space and Loading Information Models (server side)

Final 7.0.0 release

New: IUaSecureIDentity, IUaApplicationIdentity & IUaUserIdentity & respective event arguments changed to these interfaces from TUaXxx ones

Changed: TUaSessionManager.OnValidateUserIdentity renamed to OnValidateUser (and also param change as above)

Published property: TUaApplication.CertificateStore

Renamed: IUaServerNamespaceTable from IUaModifiableNamespaceTable

New: TUaServerNamespaceTable & TUaApplication.GetNamespaceTableClass

Replaced TUaStructure.ID with GetTypeId

Improved TUaStructure.ToString (Do not show the type name by default)

New: TUaClient.ServerState (was GetServerState)

New: TUaClient.WriteValue & WriteAttribute with DataValue

New: TUaVariant.AsCardinal & AsUInt32

Fixed: Variant handling of UInt32 types

New: Monitor Session timeouts in server - and other improvements on session handling

New: OPC Core Components updated to version 3.00.107 - the installer no longer requires .NET

New: IUaSession.SubscriptionCount

New: TUaSubscriptionManager.MaxSubscriptionCount

Fixed: Declarations of server side event types

Fixed: Component Help was corrupted in the previous build

Renamed: All conversion funtions to begin with Ua - for example NodeIdToString → UaNodeIdToString, StringToNodeId → UaNodeIdFromString, etc.

Removed: TUaClient.UseStrongestSecurityPolicy

New: TUaClient.SecurityPolicyStrategy (replaces UseStrongestSecurityPolicy)

New: TUaSessionManager.MaxSessionCount

New: TUaDynamicStructure - used to decode any structure value using the DataTypeDictionary documents provided by the server. Available from TUaVariant values.

New: ProsysOPC.UaClasses unit - main classes like TUaApplication moved in there from UaBase (which was growing too big).

New: TUaAddressSpace.BrowseNext (used automatically from Browse)

New: TUaServer.OnBrowse & OnGetReferences

New: TUaSubscriptionManager.OnBeforeCreateMonitoredDataItem, OnAfterCreateMonitoredDataItem, OnBeforeDeleteMonitoredDataItem, OnAfterDeleteMonitoredDataItem, OnBeforeModifyMonitoredDataItem, OnAfterModifyMonitoredDataItem

New: OPC UA components moved to packages ProsysOPC.UaClient.bpl & ProsysOPC.UaServer.bpl

Changed: Opc.Ua.Nodeset2.xml updated to version 1.04

Changed: Opc.Ua.Di.Nodeset2.xml updated to version 1.02

New: Support for OPC UA 1.04 Attributes & NodeIds

Fixed: Evaluation download didn’t install all design time components (TUaServer)

Plus a number of small fixes here and there

Changed: IUaSubscription, IUaMonitoredItem & IUaSession details

Changed: Server side interfaces renamed to IUaServerSubscription, IUaServerMonitoredItem

New: TUaClient.OperationLimits

New: String conversions to all enumeration types

Fixed: Handling of invalid namespace indexes

Support for Delphi & C++Builder 10.3 Rio

Design time functionality of TUaClient and TUaServer

New: TUaServer.UserTokenTypes & UserTokenSecurityPolicies

Renamed: TUaUserTokenTypes to TUaUserTokenTypeSet

Renamed: SUaSecurityPolicies to UaSecurityPolicyStrings

New: UaUserTokenTypeStrings

Renamed TUaSecurityPolicies to TUaSecurityPolicySet

Renamed: TUaMessageSecurityModes to TUaMessageSecurityModeSet

New: TUaClient.ServerAddress, replacing Uri

Renamed: TUaClient.TimeoutHint to OperationTimeout

Renamed (and changed a bit): TUaAccessLevel to TUaAccessLevelType

Renamed (and changed a bit): TUaEventNotifierClass to TUaEventNotifierType

Changes to all enumeration values

New: String constants for all enum types

Fixes to a lot of details

Fixed: Support for C++Builder (32-bit only so far - trouble with the 64-bit linker)

New: TUaClient.HistoryRead (and several convenience methods, such as HistoryReadRaw, etc.)

New: Support for new Security Policies, defined in OPC UA version 1.04.

New/Changed: TUaClient.SecurityPolicies (set) replacing SecurityPolicy.

New: TUaAddressSPace.Browse (overload) & TranslateBrowsePathToNodeId & TranslateBrowsePathsToNodeIds

CHANGES: Various changes to interfaces and types:

SAMPLE CHANGE: Port number of the UaSampleServer changed to 62620 (was 4842)

Various improvements to the UaSampleClient (History View, etc)

Improvements to interoperability

Support for Method Call service (client and server) with examples.

Improved interoperability with other OPC UA implementations.

Improved memory usage (leaks fixed, etc.)

Usage of certificate store has changed. Please refer to the samples and tutorials.