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UA-.NETStandard/samples/ConsoleReferenceServer/Quickstarts.ReferenceServer.Config.xml
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Marc Schier fac30c45e6 Add MinSupportedSamplingInterval configuration and honor it when revising sampling intervals (#4243) 
# Description

PR #4194 removed the unused
`ServerConfiguration.MinMetadataSamplingInterval` and left nothing in
its place. As a result there was no way to populate
`Server.ServerCapabilities.MinSupportedSampleRate` (`i=2272`) —
`ServerInternalData.CreateServerObjectAsync` hardcoded it to `0`.
Separately, the only clamp applied when revising a monitored item's
sampling interval was the per-node
`BaseVariableState.MinimumSamplingInterval`, which defaults to
`MinimumSamplingIntervals.Continuous` (`0`), so reference-server nodes
accepted any requested interval (e.g. 10 ms) unrevised — exactly what
was reported.

This adds a configuration entry **in the exact schema slot #4194
vacated** and enforces it as a lower bound.

## Configuration

- **`ServerConfiguration.MinSupportedSamplingInterval`** — `double`
(milliseconds), default `0`, `[DataTypeField(Order = 17)]`, i.e. between
`MaxNotificationsPerPublish` (16) and `AvailableSamplingRates` (18).
- `ApplicationConfiguration.xsd` — `<xs:element
name="MinSupportedSamplingInterval" type="xs:double" minOccurs="0" />`
in the same position the removed element occupied.
- Fluent API **`SetMinSupportedSamplingInterval(double)`** on
`IApplicationConfigurationBuilderServerOptions`, in the place
`SetMinMetadataSamplingInterval` was removed from.
- The element is added to the six config XML files #4194 touched
(reference / CTT / AOT / GDS use `0`; `test-server-full.xml` uses a
distinctive non-zero value for the round-trip test).

The address-space Property keeps its OPC UA spec name, so
`Server.ServerCapabilities.MinSupportedSampleRate` and
`VariableIds.Server_ServerCapabilities_MinSupportedSampleRate` are
unchanged.

```xml
<MaxNotificationsPerPublish>1000</MaxNotificationsPerPublish>
<MinSupportedSamplingInterval>2000</MinSupportedSamplingInterval>
<AvailableSamplingRates>
```

```csharp
application.Build(applicationUri, productUri)
    .AsServer([endpointUrl])
    .SetMinSupportedSamplingInterval(2000);
```

## Behavior

- `ServerInternalData` now publishes the configured value to
`Server.ServerCapabilities.MinSupportedSampleRate`.
- New `SubscriptionManager.CalculateRevisedSamplingInterval(...)` (two
overloads, alongside the existing `CalculateRevisedQueueSize`)
centralizes the revision rule and replaces the logic that was duplicated
across four call sites — the create and modify paths of
`AsyncCustomNodeManager` and `CustomNodeManager` — which now expose a
`MinSupportedSamplingInterval` property seeded from the configuration
(mirroring how `MaxQueueSize` is initialized).

The rule:

1. A requested interval below zero resolves to the *default sampling
interval*: the **publishing interval of the subscription** on create,
and the item's **current sampling interval** on modify. The modify case
preserves 1.5.378 behavior, so a `ModifyMonitoredItems` call that leaves
the sampling interval unspecified does not silently retune the item.
2. A node declaring `MinimumSamplingIntervals.Continuous` (`0`) for the
`Value` Attribute reports **by exception** and is **not** bound by the
server-wide minimum — the requested interval is returned unchanged.
3. Every other item is raised to `max(nodeMinimumSamplingInterval,
MinSupportedSamplingInterval)`. Attributes other than `Value`, nodes
declaring `MinimumSamplingIntervals.Indeterminate` (`-1`), and
non-Variable nodes are bound only by `MinSupportedSamplingInterval`.
4. `double.MaxValue` is capped to one year (pre-existing behavior, now
in one place).

Event monitored items do not sample and are unaffected.

**Backward compatible:** with the default of `0` the computation is
identical to the previous code for every input, including `Continuous`,
`Indeterminate`, positive node minimums, non-`Value` attributes and
`NaN`. No existing configuration or deployment changes behavior.

Node managers that implement `INodeManager` directly can call the new
public helper to apply the same rule.

## Related Issues

- Fixes #4191

The issue thread also asked whether
`Subscription.MaxNotificationsPerPublish` is revised by the server. It
is (`SubscriptionManager.CalculateMaxNotificationsPerPublish`), but it
was untested and is not observable from the `CreateSubscription`
response, which carries no revised field for that parameter. Four tests
were added that assert it through
`SubscriptionDiagnostics.MaxNotificationsPerPublish` on a privileged
session, covering create and modify, the above-limit, below-limit and
`0` (server default) cases.

## Tests

- **`SamplingIntervalRevisionTests`** (17 unit tests,
`Opc.Ua.Server.Tests`) — the full revision matrix: negative request
resolving to the default interval, the `Continuous` bypass,
`Indeterminate`, node minimum above *and* below the floor, a floor of
`0` being a no-op, non-`Value` attributes, non-Variable and null nodes,
and the `double.MaxValue` cap.
- **`MinSupportedSamplingIntervalTests`** (10 integration tests,
`Opc.Ua.Subscriptions.Tests`) — against a reference server configured
with a 500 ms floor: the capabilities node reflects the configuration; a
node declaring 100 ms is lifted to 500 ms;
`Scalar_Static_Arrays2D_LocalizedText` (1000 ms) wins over the floor;
`CurrentTime` (250 ms) is lifted; a `Continuous` node keeps its 10 ms; a
non-`Value` attribute is floored; `ModifyMonitoredItems` behaves the
same in both directions; event items are unaffected.
- Restored the configuration builder and round-trip test coverage that
#4194 deleted.
- `TestFixture` gained a `protected virtual void
ConfigureServer(ApplicationConfiguration)` hook so a derived fixture can
vary the server configuration before start. Default implementation is a
no-op, so no existing fixture changes behavior.

## Documentation

- `docs/Subscriptions.md` — new **Sampling interval revision** section
with the input table, the four-step rule (including both
negative-interval fallbacks), XML and fluent configuration examples, and
guidance for custom node managers.
- `docs/migrate/2.0.x/configuration.md` — new section documenting that
`MinMetadataSamplingInterval` was removed and
`MinSupportedSamplingInterval` added. Verified against `master378`: the
old setting defaulted to `1000` but was never read, and
`MinSupportedSampleRate` was hardcoded to `0` with no server-wide floor.
The guide therefore stresses that these are **two different settings,
not a rename** — consumers should drop the old element (a default of `0`
reproduces 1.5.378 exactly) and only opt into the new one deliberately,
since reusing the old value would silently introduce a sampling floor.

## Validation

- `dotnet build UA.slnx` — **0 warnings, 0 errors** across all TFMs.
- .NET 10: `Opc.Ua.Server.Tests` 4091 passed,
`Opc.Ua.Subscriptions.Tests` 619 passed (full suite including the new
fixture), `Opc.Ua.InformationModel.Tests` 1063 passed,
`Opc.Ua.Configuration.Tests` 221 passed, `Opc.Ua.Gds.Tests` 119 passed.
- .NET Framework 4.8: new unit tests (200 incl. sampling groups), new
integration tests (17) and configuration round-trip (135) all passed.
- `ConsoleReferenceServer` starts successfully with the updated
configuration file.

## Checklist

- [x] I have signed the
[CLA](https://opcfoundation.org/license/cla/ContributorLicenseAgreementv1.0.pdf)
and read the
[CONTRIBUTING](https://github.com/OPCFoundation/UA-.NETStandard/blob/master/CONTRIBUTING.md)
doc.
- [x] I have added tests that prove my fix is effective or that my
feature works and increased code coverage.
- [x] I have added all necessary documentation.
- [x] I have verified that my changes do not introduce (new) build or
analyzer warnings.
- [x] I ran **all** tests locally using the **UA.slnx** solution against
at least .net **framework** and .net **10**, and all passed.
- [ ] I fixed **all** failing and flaky tests in the CI pipelines and
**all** CodeQL warnings.
- [x] I have addressed **all** PR feedback received.

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 79f8090c-b2a3-409c-a5bf-56b6d2a35e70
2026-08-12 17:41:29 +00:00

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<?xml version="1.0" encoding="utf-8"?>
<ApplicationConfiguration
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:ua="http://opcfoundation.org/UA/2008/02/Types.xsd"
xmlns="http://opcfoundation.org/UA/SDK/Configuration.xsd"
>
<!-- xsi:schemaLocation="http://opcfoundation.org/UA/SDK/Configuration.xsd ./Configuration.xsd" -->
<ApplicationName>Quickstart Reference Server</ApplicationName>
<ApplicationUri>urn:localhost:UA:Quickstarts:ReferenceServer</ApplicationUri>
<ProductUri>uri:opcfoundation.org:Quickstarts:ReferenceServer</ProductUri>
<ApplicationType>Server_0</ApplicationType>
<SecurityConfiguration>
<!-- Which certificate types are supported -->
<ApplicationCertificates>
<CertificateIdentifier>
<StoreType>Directory</StoreType>
<StorePath>%LocalApplicationData%/OPC Foundation/pki/own</StorePath>
<SubjectName>CN=Quickstart Reference Server, C=US, S=Arizona, O=OPC Foundation, DC=localhost</SubjectName>
<CertificateTypeString>RsaSha256</CertificateTypeString>
</CertificateIdentifier>
<CertificateIdentifier>
<!-- <TypeId>NistP256</TypeId> -->
<StoreType>Directory</StoreType>
<StorePath>%LocalApplicationData%/OPC Foundation/pki/own</StorePath>
<SubjectName>CN=Quickstart Reference Server, C=US, S=Arizona, O=OPC Foundation, DC=localhost</SubjectName>
<CertificateTypeString>NistP256</CertificateTypeString>
</CertificateIdentifier>
<CertificateIdentifier>
<!-- <TypeId>NistP384</TypeId> -->
<StoreType>Directory</StoreType>
<StorePath>%LocalApplicationData%/OPC Foundation/pki/own</StorePath>
<SubjectName>CN=Quickstart Reference Server, C=US, S=Arizona, O=OPC Foundation, DC=localhost</SubjectName>
<CertificateTypeString>NistP384</CertificateTypeString>
</CertificateIdentifier>
<CertificateIdentifier>
<!-- <TypeId>BrainpoolP256r1</TypeId> -->
<StoreType>Directory</StoreType>
<StorePath>%LocalApplicationData%/OPC Foundation/pki/own</StorePath>
<SubjectName>CN=Quickstart Reference Server, C=US, S=Arizona, O=OPC Foundation, DC=localhost</SubjectName>
<CertificateTypeString>BrainpoolP256r1</CertificateTypeString>
</CertificateIdentifier>
<CertificateIdentifier>
<!-- <TypeId>BrainpoolP384r1</TypeId> -->
<StoreType>Directory</StoreType>
<StorePath>%LocalApplicationData%/OPC Foundation/pki/own</StorePath>
<SubjectName>CN=Quickstart Reference Server, C=US, S=Arizona, O=OPC Foundation, DC=localhost</SubjectName>
<CertificateTypeString>BrainpoolP384r1</CertificateTypeString>
</CertificateIdentifier>
</ApplicationCertificates>
<!-- Where the other application certificates are stored -->
<!-- Where the issuer certificate are stored (certificate authorities) -->
<TrustedIssuerCertificates>
<StoreType>Directory</StoreType>
<StorePath>%LocalApplicationData%/OPC Foundation/pki/issuer</StorePath>
</TrustedIssuerCertificates>
<!-- Where the trust list is stored -->
<TrustedPeerCertificates>
<StoreType>Directory</StoreType>
<StorePath>%LocalApplicationData%/OPC Foundation/pki/trusted</StorePath>
</TrustedPeerCertificates>
<!-- The directory used to store invalid certificates for later review by the administrator. -->
<RejectedCertificateStore>
<StoreType>Directory</StoreType>
<StorePath>%LocalApplicationData%/OPC Foundation/pki/rejected</StorePath>
</RejectedCertificateStore>
<MaxRejectedCertificates>5</MaxRejectedCertificates>
<!-- WARNING: The following setting (to automatically accept untrusted certificates) should be used
for easy debugging purposes ONLY and turned off for production deployments! -->
<AutoAcceptUntrustedCertificates>false</AutoAcceptUntrustedCertificates>
<!-- WARNING: SHA1 signed certificates are by default rejected and should be phased out.
only nano and embedded profiles are allowed to use sha1 signed certificates. -->
<RejectSHA1SignedCertificates>true</RejectSHA1SignedCertificates>
<RejectUnknownRevocationStatus>true</RejectUnknownRevocationStatus>
<MinimumCertificateKeySize>2048</MinimumCertificateKeySize>
<AddAppCertToTrustedStore>false</AddAppCertToTrustedStore>
<SendCertificateChain>true</SendCertificateChain>
<!-- Where the User issuer certificates are stored -->
<UserIssuerCertificates>
<StoreType>Directory</StoreType>
<StorePath>%LocalApplicationData%/OPC Foundation/pki/issuerUser</StorePath>
</UserIssuerCertificates>
<!-- Where the User trust list is stored-->
<TrustedUserCertificates>
<StoreType>Directory</StoreType>
<StorePath>%LocalApplicationData%/OPC Foundation/pki/trustedUser</StorePath>
</TrustedUserCertificates>
</SecurityConfiguration>
<TransportConfigurations></TransportConfigurations>
<TransportQuotas>
<OperationTimeout>120000</OperationTimeout>
<MaxStringLength>1048576</MaxStringLength>
<MaxByteStringLength>1048576</MaxByteStringLength>
<MaxArrayLength>65535</MaxArrayLength>
<MaxMessageSize>4194304</MaxMessageSize>
<MaxBufferSize>65535</MaxBufferSize>
<ChannelLifetime>30000</ChannelLifetime>
<SecurityTokenLifetime>3600000</SecurityTokenLifetime>
</TransportQuotas>
<ServerConfiguration>
<BaseAddresses>
<ua:String>opc.https://localhost:62540/Quickstarts/ReferenceServer</ua:String>
<ua:String>opc.tcp://localhost:62541/Quickstarts/ReferenceServer</ua:String>
<!--<ua:String>https://localhost:62542/Quickstarts/ReferenceServer</ua:String>-->
<ua:String>opc.wss://localhost:62543/Quickstarts/ReferenceServer</ua:String>
</BaseAddresses>
<!--
These list the alternate addresses (via firewalls, multiple NICs etc.) that can be
used to communicate with the server. The URL used by the client when calling
FindServers/GetEndpoints or CreateSession will be used to filter the list of
endpoints returned by checking for alternate base addresses that have a domain
that matches the domain in the url provided by the client.
Note that any additional domains should be listed in the server's certificate. If they
are left out the client make refuse to connect because it has no way to know if the
alternate domain was authorized by the server administrator.
-->
<!--
<AlternateBaseAddresses>
<ua:String>opc.tcp://AlternateHostName/Quickstarts/ReferenceServer</ua:String>
<ua:String>opc.tcp://10.10.103.150/Quickstarts/ReferenceServer</ua:String>
<ua:String>opc.tcp://[2a01::626d]/Quickstarts/ReferenceServer</ua:String>
</AlternateBaseAddresses>
-->
<SecurityPolicies>
<!-- the first policy is used for the https endpoint -->
<!--
-->
<ServerSecurityPolicy>
<SecurityMode>Sign_2</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#Basic256Sha256</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>SignAndEncrypt_3</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#Basic256Sha256</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>Sign_2</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#ECC_nistP256_AesGcm</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>SignAndEncrypt_3</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#ECC_nistP256_AesGcm</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>Sign_2</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#ECC_nistP256_ChaChaPoly</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>SignAndEncrypt_3</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#ECC_nistP256_ChaChaPoly</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>Sign_2</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#ECC_nistP384_AesGcm</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>SignAndEncrypt_3</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#ECC_nistP384_AesGcm</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>Sign_2</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#ECC_nistP384_ChaChaPoly</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>SignAndEncrypt_3</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#ECC_nistP384_ChaChaPoly</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>Sign_2</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#ECC_brainpoolP256r1_AesGcm</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>SignAndEncrypt_3</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#ECC_brainpoolP256r1_AesGcm</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>Sign_2</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#ECC_brainpoolP256r1_ChaChaPoly</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>SignAndEncrypt_3</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#ECC_brainpoolP256r1_ChaChaPoly</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>Sign_2</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#ECC_brainpoolP384r1_AesGcm</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>SignAndEncrypt_3</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#ECC_brainpoolP384r1_AesGcm</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>Sign_2</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#ECC_brainpoolP384r1_ChaChaPoly</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>SignAndEncrypt_3</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#ECC_brainpoolP384r1_ChaChaPoly</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>Sign_2</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#RSA_DH_AesGcm</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>SignAndEncrypt_3</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#RSA_DH_AesGcm</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>Sign_2</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#RSA_DH_ChaChaPoly</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>SignAndEncrypt_3</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#RSA_DH_ChaChaPoly</SecurityPolicyUri>
</ServerSecurityPolicy>
<ServerSecurityPolicy>
<SecurityMode>None_1</SecurityMode>
<SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#None</SecurityPolicyUri>
</ServerSecurityPolicy>
</SecurityPolicies>
<MinRequestThreadCount>5</MinRequestThreadCount>
<MaxRequestThreadCount>100</MaxRequestThreadCount>
<MaxQueuedRequestCount>2000</MaxQueuedRequestCount>
<!-- The SDK expects the server to support the same set of user tokens for every endpoint. -->
<UserTokenPolicies>
<!-- Allows anonymous users -->
<ua:UserTokenPolicy>
<ua:TokenType>Anonymous_0</ua:TokenType>
<!-- <ua:SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#None</ua:SecurityPolicyUri> -->
</ua:UserTokenPolicy>
<!-- Allows username/password -->
<ua:UserTokenPolicy>
<ua:TokenType>UserName_1</ua:TokenType>
<!-- passwords must be encrypted - this specifies what algorithm to use -->
<!-- if no algorithm is specified, the active security policy is used -->
<!-- <ua:SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#Basic256Sha256</ua:SecurityPolicyUri> -->
</ua:UserTokenPolicy>
<!-- Allows user certificates -->
<ua:UserTokenPolicy>
<ua:TokenType>Certificate_2</ua:TokenType>
<!-- certificate possession must be proven with a digital signature - this specifies what algorithm to use -->
<!-- if no algorithm is specified, the active security policy is used -->
<!-- <ua:SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#Basic256Sha256</ua:SecurityPolicyUri> -->
</ua:UserTokenPolicy>
</UserTokenPolicies>
<DiagnosticsEnabled>true</DiagnosticsEnabled>
<!-- Settings for CTT testing -->
<MaxSessionCount>75</MaxSessionCount>
<MaxChannelCount>1000</MaxChannelCount>
<MinSessionTimeout>10000</MinSessionTimeout>
<MaxSessionTimeout>3600000</MaxSessionTimeout>
<MaxBrowseContinuationPoints>10</MaxBrowseContinuationPoints>
<MaxQueryContinuationPoints>10</MaxQueryContinuationPoints>
<MaxHistoryContinuationPoints>100</MaxHistoryContinuationPoints>
<MaxRequestAge>600000</MaxRequestAge>
<MinPublishingInterval>50</MinPublishingInterval>
<MaxPublishingInterval>3600000</MaxPublishingInterval>
<PublishingResolution>50</PublishingResolution>
<MaxSubscriptionLifetime>3600000</MaxSubscriptionLifetime>
<MaxMessageQueueSize>100</MaxMessageQueueSize>
<MaxNotificationQueueSize>100</MaxNotificationQueueSize>
<MaxNotificationsPerPublish>1000</MaxNotificationsPerPublish>
<!-- The minimum sampling interval the server supports. 0 means the server does not
impose a server wide lower bound on the revised sampling interval. The value is
published in Server.ServerCapabilities.MinSupportedSampleRate. -->
<MinSupportedSamplingInterval>0</MinSupportedSamplingInterval>
<AvailableSamplingRates>
<SamplingRateGroup>
<Start>5</Start>
<Increment>5</Increment>
<Count>20</Count>
</SamplingRateGroup>
<SamplingRateGroup>
<Start>100</Start>
<Increment>100</Increment>
<Count>4</Count>
</SamplingRateGroup>
<SamplingRateGroup>
<Start>500</Start>
<Increment>250</Increment>
<Count>2</Count>
</SamplingRateGroup>
<SamplingRateGroup>
<Start>1000</Start>
<Increment>500</Increment>
<Count>20</Count>
</SamplingRateGroup>
</AvailableSamplingRates>
<RegistrationEndpoint>
<ua:EndpointUrl>opc.tcp://localhost:4840</ua:EndpointUrl>
<ua:Server>
<ua:ApplicationUri>opc.tcp://localhost:4840</ua:ApplicationUri>
<ua:ApplicationType>DiscoveryServer_3</ua:ApplicationType>
<ua:DiscoveryUrls>
<ua:String>opc.tcp://localhost:4840</ua:String>
</ua:DiscoveryUrls>
</ua:Server>
<ua:SecurityMode>SignAndEncrypt_3</ua:SecurityMode>
<ua:SecurityPolicyUri />
<ua:UserIdentityTokens />
</RegistrationEndpoint>
<MaxRegistrationInterval>0</MaxRegistrationInterval>
<NodeManagerSaveFile>Quickstarts.ReferenceServer.nodes.xml</NodeManagerSaveFile>
<MinSubscriptionLifetime>10000</MinSubscriptionLifetime>
<MaxPublishRequestCount>20</MaxPublishRequestCount>
<MaxSubscriptionCount>100</MaxSubscriptionCount>
<MaxEventQueueSize>10000</MaxEventQueueSize>
<!-- see https://opcfoundation-onlineapplications.org/profilereporting/ for list of available profiles -->
<ServerProfileArray>
<ua:String>http://opcfoundation.org/UA-Profile/Server/StandardUA2017</ua:String>
<ua:String>http://opcfoundation.org/UA-Profile/Server/DataAccess</ua:String>
<ua:String>http://opcfoundation.org/UA-Profile/Server/Methods</ua:String>
<ua:String>http://opcfoundation.org/UA-Profile/Server/ReverseConnect</ua:String>
<ua:String>http://opcfoundation.org/UA-Profile/Server/ClientRedundancy</ua:String>
<ua:String>http://opcfoundation.org/UA-Profile/Server/HistoricalRawData2022</ua:String>
<ua:String>http://opcfoundation.org/UA-Profile/Server/AggregateHistorical2022</ua:String>
</ServerProfileArray>
<ShutdownDelay>5</ShutdownDelay>
<ServerCapabilities>
<ua:String>DA</ua:String>
<ua:String>HD</ua:String>
<ua:String>AC</ua:String>
<ua:String>GDS</ua:String>
</ServerCapabilities>
<SupportedPrivateKeyFormats>
<ua:String>PFX</ua:String>
<ua:String>PEM</ua:String>
</SupportedPrivateKeyFormats>
<MaxTrustListSize>0</MaxTrustListSize>
<MultiCastDnsEnabled>false</MultiCastDnsEnabled>
<!-- Reverse connection parameters for aggregation server sample -->
<!--
<ReverseConnect>
<Clients>
<ReverseConnectClient>
<EndpointUrl>opc.tcp://localhost:65300</EndpointUrl>
<MaxSessionCount>0</MaxSessionCount>
<Enabled>true</Enabled>
</ReverseConnectClient>
</Clients>
<ConnectInterval>15000</ConnectInterval>
<ConnectTimeout>30000</ConnectTimeout>
<RejectTimeout>60000</RejectTimeout>
</ReverseConnect>
-->
<OperationLimits>
<MaxNodesPerRead>2500</MaxNodesPerRead>
<MaxNodesPerHistoryReadData>1000</MaxNodesPerHistoryReadData>
<MaxNodesPerHistoryReadEvents>1000</MaxNodesPerHistoryReadEvents>
<MaxNodesPerWrite>2500</MaxNodesPerWrite>
<MaxNodesPerHistoryUpdateData>1000</MaxNodesPerHistoryUpdateData>
<MaxNodesPerHistoryUpdateEvents>1000</MaxNodesPerHistoryUpdateEvents>
<MaxNodesPerMethodCall>2500</MaxNodesPerMethodCall>
<MaxNodesPerBrowse>2500</MaxNodesPerBrowse>
<MaxNodesPerRegisterNodes>2500</MaxNodesPerRegisterNodes>
<MaxNodesPerTranslateBrowsePathsToNodeIds>2500</MaxNodesPerTranslateBrowsePathsToNodeIds>
<MaxNodesPerNodeManagement>2500</MaxNodesPerNodeManagement>
<MaxMonitoredItemsPerCall>2500</MaxMonitoredItemsPerCall>
</OperationLimits>
<AuditingEnabled>true</AuditingEnabled>
<HttpsMutualTls>true</HttpsMutualTls>
<DurableSubscriptionsEnabled>true</DurableSubscriptionsEnabled>
<MaxDurableNotificationQueueSize>10000</MaxDurableNotificationQueueSize>
<MaxDurableEventQueueSize>10000</MaxDurableEventQueueSize>
<MaxDurableSubscriptionLifetimeInHours>10</MaxDurableSubscriptionLifetimeInHours>
</ServerConfiguration>
<Extensions>
<ua:XmlElement>
<GlobalDiscoveryServerConfiguration xmlns="http://opcfoundation.org/UA/GDS/Configuration.xsd">
<AuthoritiesStorePath>%LocalApplicationData%/OPC Foundation/GDS/authorities</AuthoritiesStorePath>
<ApplicationCertificatesStorePath>%LocalApplicationData%/OPC Foundation/GDS/applications</ApplicationCertificatesStorePath>
<DefaultSubjectNameContext>O=OPC Foundation</DefaultSubjectNameContext>
<CertificateGroups>
<CertificateGroupConfiguration>
<Id>Default</Id>
<CertificateTypes>
<ua:String>RsaSha256ApplicationCertificateType</ua:String>
<ua:String>EccNistP256ApplicationCertificateType</ua:String>
<ua:String>EccNistP384ApplicationCertificateType</ua:String>
<ua:String>EccBrainpoolP256r1ApplicationCertificateType</ua:String>
<ua:String>EccBrainpoolP384r1ApplicationCertificateType</ua:String>
</CertificateTypes>
<SubjectName>CN=Reference Server CA, O=OPC Foundation</SubjectName>
<BaseStorePath>%LocalApplicationData%/OPC Foundation/GDS/CA/default</BaseStorePath>
<DefaultCertificateLifetime>12</DefaultCertificateLifetime>
<DefaultCertificateKeySize>2048</DefaultCertificateKeySize>
<DefaultCertificateHashSize>256</DefaultCertificateHashSize>
<CACertificateLifetime>60</CACertificateLifetime>
<CACertificateKeySize>4096</CACertificateKeySize>
<CACertificateHashSize>512</CACertificateHashSize>
</CertificateGroupConfiguration>
</CertificateGroups>
<KnownHostNames />
<DatabaseStorePath></DatabaseStorePath>
</GlobalDiscoveryServerConfiguration>
</ua:XmlElement>
<ua:XmlElement>
<MemoryBufferConfiguration xmlns="http://samples.org/UA/MemoryBuffer">
<Buffers>
<MemoryBufferInstance>
<Name>UInt32</Name>
<TagCount>100</TagCount>
<DataType>UInt32</DataType>
</MemoryBufferInstance>
<MemoryBufferInstance>
<Name>Double</Name>
<TagCount>100</TagCount>
<DataType>Double</DataType>
</MemoryBufferInstance>
</Buffers>
</MemoryBufferConfiguration>
</ua:XmlElement>
</Extensions>
<TraceConfiguration>
<OutputFilePath>./Logs/Quickstarts.ReferenceServer.log.txt</OutputFilePath>
<DeleteOnLoad>true</DeleteOnLoad>
<!-- Show Only Errors -->
<!-- <TraceMasks>1</TraceMasks> -->
<!-- Show Only Security and Errors -->
<!-- <TraceMasks>513</TraceMasks> -->
<!-- Show Only Security, Errors and Trace -->
<!-- <TraceMasks>515</TraceMasks> -->
<!-- Show Only Security, COM Calls, Errors and Trace -->
<!-- <TraceMasks>771</TraceMasks> -->
<!-- Show Only Security, Service Calls, Errors and Trace -->
<!-- <TraceMasks>523</TraceMasks> -->
<!-- Show Only Security, ServiceResultExceptions, Errors and Trace -->
<TraceMasks>519</TraceMasks>
</TraceConfiguration>
</ApplicationConfiguration>
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