Remove tools/opcuacli-dotnet and point all docs to Client.CLI

The standalone CLI tool is superseded by src/ZB.MOM.WW.LmxOpcUa.Client.CLI
which uses the shared IOpcUaClientService abstraction. Renames CliTool.md to
Client.CLI.md and updates README, CLAUDE.md, Security, and Redundancy docs.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Joseph Doherty
2026-03-31 08:08:57 -04:00
parent 29e917b05f
commit 8fae2cb790
19 changed files with 29 additions and 1565 deletions

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@@ -102,14 +102,13 @@ Use the DeepWiki MCP (`mcp__deepwiki`) to query documentation for the OPC UA .NE
## Testing
Use the dotnet OPC UA CLI tool at `tools/opcuacli-dotnet/` for manual testing against the running OPC UA server. Supports connect, read, write, subscribe, and browse commands. See `tools/opcuacli-dotnet/README.md` for usage details.
Use the Client CLI at `src/ZB.MOM.WW.LmxOpcUa.Client.CLI/` for manual testing against the running OPC UA server. Supports connect, read, write, browse, subscribe, historyread, alarms, and redundancy commands. See `docs/Client.CLI.md` for full documentation.
```bash
cd tools/opcuacli-dotnet
dotnet run -- connect -u opc.tcp://localhost:4840
dotnet run -- browse -u opc.tcp://localhost:4840 -r -d 3
dotnet run -- read -u opc.tcp://localhost:4840 -n "ns=2;s=SomeNode"
dotnet run -- subscribe -u opc.tcp://localhost:4840 -n "ns=2;s=SomeNode" -i 500
dotnet run --project src/ZB.MOM.WW.LmxOpcUa.Client.CLI -- connect -u opc.tcp://localhost:4840
dotnet run --project src/ZB.MOM.WW.LmxOpcUa.Client.CLI -- browse -u opc.tcp://localhost:4840 -r -d 3
dotnet run --project src/ZB.MOM.WW.LmxOpcUa.Client.CLI -- read -u opc.tcp://localhost:4840 -n "ns=2;s=SomeNode"
dotnet run --project src/ZB.MOM.WW.LmxOpcUa.Client.CLI -- subscribe -u opc.tcp://localhost:4840 -n "ns=2;s=SomeNode" -i 500
```
### OPC PLC Sample Server

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@@ -66,25 +66,25 @@ ZB.MOM.WW.LmxOpcUa.Host.exe start
```bash
# Connect
dotnet run --project tools/opcuacli-dotnet -- connect -u opc.tcp://localhost:4840/LmxOpcUa
dotnet run --project src/ZB.MOM.WW.LmxOpcUa.Client.CLI -- connect -u opc.tcp://localhost:4840/LmxOpcUa
# Browse Galaxy hierarchy
dotnet run --project tools/opcuacli-dotnet -- browse -u opc.tcp://localhost:4840/LmxOpcUa -n "ns=1;s=ZB" -r -d 5
dotnet run --project src/ZB.MOM.WW.LmxOpcUa.Client.CLI -- browse -u opc.tcp://localhost:4840/LmxOpcUa -n "ns=1;s=ZB" -r -d 5
# Read a tag
dotnet run --project tools/opcuacli-dotnet -- read -u opc.tcp://localhost:4840/LmxOpcUa -n "ns=1;s=TestMachine_001.MachineID"
dotnet run --project src/ZB.MOM.WW.LmxOpcUa.Client.CLI -- read -u opc.tcp://localhost:4840/LmxOpcUa -n "ns=1;s=TestMachine_001.MachineID"
# Write a tag
dotnet run --project tools/opcuacli-dotnet -- write -u opc.tcp://localhost:4840/LmxOpcUa -n "ns=1;s=TestChildObject.TestString" -v "Hello"
dotnet run --project src/ZB.MOM.WW.LmxOpcUa.Client.CLI -- write -u opc.tcp://localhost:4840/LmxOpcUa -n "ns=1;s=TestChildObject.TestString" -v "Hello"
# Subscribe to changes
dotnet run --project tools/opcuacli-dotnet -- subscribe -u opc.tcp://localhost:4840/LmxOpcUa -n "ns=1;s=TestChildObject.TestInt" -i 500
dotnet run --project src/ZB.MOM.WW.LmxOpcUa.Client.CLI -- subscribe -u opc.tcp://localhost:4840/LmxOpcUa -n "ns=1;s=TestChildObject.TestInt" -i 500
# Read historical data
dotnet run --project tools/opcuacli-dotnet -- historyread -u opc.tcp://localhost:4840/LmxOpcUa -n "ns=1;s=TestMachine_001.TestHistoryValue" --start "2026-03-25" --end "2026-03-30"
dotnet run --project src/ZB.MOM.WW.LmxOpcUa.Client.CLI -- historyread -u opc.tcp://localhost:4840/LmxOpcUa -n "ns=1;s=TestMachine_001.TestHistoryValue" --start "2026-03-25" --end "2026-03-30"
# Subscribe to alarm events
dotnet run --project tools/opcuacli-dotnet -- alarms -u opc.tcp://localhost:4840/LmxOpcUa -n "ns=1;s=TestMachine_001" --refresh
dotnet run --project src/ZB.MOM.WW.LmxOpcUa.Client.CLI -- alarms -u opc.tcp://localhost:4840/LmxOpcUa -n "ns=1;s=TestMachine_001" --refresh
```
### Run tests
@@ -118,7 +118,9 @@ tests/ZB.MOM.WW.LmxOpcUa.Tests/
OpcUa/ Address space build/rebuild, diff, data conversion tests
Wiring/ Component integration tests
tools/opcuacli-dotnet/ OPC UA CLI test tool
src/ZB.MOM.WW.LmxOpcUa.Client.Shared/ Shared OPC UA client library
src/ZB.MOM.WW.LmxOpcUa.Client.CLI/ Command-line client (lmxopcua-cli)
src/ZB.MOM.WW.LmxOpcUa.Client.UI/ Avalonia desktop client
gr/ Galaxy repository docs, SQL queries, schema
```
@@ -139,7 +141,7 @@ gr/ Galaxy repository docs, SQL queries, schema
| [Configuration](docs/Configuration.md) | appsettings.json binding, feature flags, validation |
| [Status Dashboard](docs/StatusDashboard.md) | HTTP server, health checks, metrics reporting |
| [Service Hosting](docs/ServiceHosting.md) | TopShelf, startup/shutdown sequence, error handling |
| [CLI Tool](docs/CliTool.md) | Connect, browse, read, write, subscribe, historyread, alarms commands |
| [Client CLI](docs/Client.CLI.md) | Connect, browse, read, write, subscribe, historyread, alarms, redundancy commands |
| [Security](docs/security.md) | Transport security profiles, certificate trust, production hardening |
| [Redundancy](docs/Redundancy.md) | Non-transparent warm/hot redundancy, ServiceLevel, paired deployment |

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@@ -235,18 +235,10 @@ Server URIs:
Application URI: urn:localhost:LmxOpcUa:instance1
```
## Differences from tools/opcuacli-dotnet
## Testing
The `Client.CLI` replaces the standalone tool at `tools/opcuacli-dotnet/`. Key differences:
The Client CLI has 52 unit tests covering option parsing, service invocation, output formatting, and cleanup behavior:
| Aspect | tools/opcuacli-dotnet | Client.CLI |
|--------|----------------------|------------|
| OPC UA access | Direct `Session` API | `IOpcUaClientService` abstraction |
| Connection/failover | Per-command `OpcUaFailoverHelper` | Shared service with built-in failover and keep-alive |
| Certificate management | Inline in `OpcUaHelper` | Shared `ApplicationConfigurationFactory` |
| Type conversion | `OpcUaHelper.ConvertValue` | `ValueConverter` in `Client.Shared` |
| Executable name | `opcuacli-dotnet` | `lmxopcua-cli` |
| Verbose logging | Not available | `--verbose` flag with Serilog |
| Testability | No test seam | `IOpcUaClientServiceFactory` injection, 52 unit tests |
The `tools/opcuacli-dotnet/` tool remains available for low-level debugging but is no longer the recommended client CLI.
```bash
dotnet test tests/ZB.MOM.WW.LmxOpcUa.Client.CLI.Tests
```

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@@ -135,11 +135,11 @@ When deploying a redundant pair, the following configuration properties must dif
## CLI `redundancy` Command
The CLI tool at `tools/opcuacli-dotnet/` includes a `redundancy` command that reads the redundancy state from a running server.
The Client CLI includes a `redundancy` command that reads the redundancy state from a running server.
```bash
dotnet run -- redundancy -u opc.tcp://localhost:4840/LmxOpcUa
dotnet run -- redundancy -u opc.tcp://localhost:4841/LmxOpcUa
dotnet run --project src/ZB.MOM.WW.LmxOpcUa.Client.CLI -- redundancy -u opc.tcp://localhost:4840/LmxOpcUa
dotnet run --project src/ZB.MOM.WW.LmxOpcUa.Client.CLI -- redundancy -u opc.tcp://localhost:4841/LmxOpcUa
```
The command reads the following standard OPC UA nodes and displays their values:

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@@ -104,7 +104,7 @@ Serilog with `ILogger` passed via constructor or `Log.ForContext<T>()`. No sinks
### Commands
Port all 8 commands from the existing `tools/opcuacli-dotnet/`:
All 8 commands:
| Command | Description |
|---------|-------------|

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@@ -176,25 +176,24 @@ Periodically inspect the `rejected/` directory. Certificates that appear here we
## CLI Examples
The `tools/opcuacli-dotnet` CLI tool supports the `-S` (or `--security`) flag to select the transport security mode when connecting. Valid values are `none`, `sign`, and `encrypt`.
The Client CLI supports the `-S` (or `--security`) flag to select the transport security mode when connecting. Valid values are `none`, `sign`, `encrypt`, and `signandencrypt`.
### Connect with no security
```bash
cd tools/opcuacli-dotnet
dotnet run -- connect -u opc.tcp://localhost:4840/LmxOpcUa -S none
dotnet run --project src/ZB.MOM.WW.LmxOpcUa.Client.CLI -- connect -u opc.tcp://localhost:4840/LmxOpcUa -S none
```
### Connect with signing
```bash
dotnet run -- connect -u opc.tcp://localhost:4840/LmxOpcUa -S sign
dotnet run --project src/ZB.MOM.WW.LmxOpcUa.Client.CLI -- connect -u opc.tcp://localhost:4840/LmxOpcUa -S sign
```
### Connect with signing and encryption
```bash
dotnet run -- connect -u opc.tcp://localhost:4840/LmxOpcUa -S encrypt
dotnet run --project src/ZB.MOM.WW.LmxOpcUa.Client.CLI -- connect -u opc.tcp://localhost:4840/LmxOpcUa -S encrypt
```
### Browse with encryption and authentication

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@@ -1,198 +0,0 @@
using CliFx;
using CliFx.Attributes;
using CliFx.Infrastructure;
using Opc.Ua;
using Opc.Ua.Client;
namespace OpcUaCli.Commands;
[Command("alarms", Description = "Subscribe to alarm events on a node")]
public class AlarmsCommand : ICommand
{
/// <summary>
/// Gets the OPC UA endpoint URL for the server whose alarm stream should be monitored.
/// </summary>
[CommandOption("url", 'u', Description = "OPC UA server endpoint URL", IsRequired = true)]
public string Url { get; init; } = default!;
[CommandOption("username", 'U', Description = "Username for authentication")]
public string? Username { get; init; }
[CommandOption("password", 'P', Description = "Password for authentication")]
public string? Password { get; init; }
[CommandOption("security", 'S', Description = "Transport security: none, sign, encrypt (default: none)")]
public string Security { get; init; } = "none";
[CommandOption("failover-urls", 'F', Description = "Comma-separated failover endpoint URLs for redundancy")]
public string? FailoverUrls { get; init; }
/// <summary>
/// Gets the node to subscribe to for event notifications, typically a source object or the server node.
/// </summary>
[CommandOption("node", 'n', Description = "Node ID to monitor for events (default: Server node)")]
public string? NodeId { get; init; }
/// <summary>
/// Gets the requested publishing and sampling interval for the alarm subscription.
/// </summary>
[CommandOption("interval", 'i', Description = "Publishing interval in milliseconds")]
public int Interval { get; init; } = 1000;
/// <summary>
/// Gets a value indicating whether the command should request a retained-condition refresh after subscribing.
/// </summary>
[CommandOption("refresh", Description = "Request a ConditionRefresh after subscribing")]
public bool Refresh { get; init; }
/// <summary>
/// Connects to the target server and streams alarm or condition events to the operator console.
/// </summary>
/// <param name="console">The CLI console used for cancellation and alarm-event output.</param>
public async ValueTask ExecuteAsync(IConsole console)
{
var urls = FailoverUrlParser.Parse(Url, FailoverUrls);
using var failover = new OpcUaFailoverHelper(urls, Username, Password, Security);
using var session = await failover.ConnectAsync();
var nodeId = string.IsNullOrEmpty(NodeId)
? ObjectIds.Server
: new NodeId(NodeId);
var subscription = new Subscription(session.DefaultSubscription)
{
PublishingInterval = Interval,
DisplayName = "CLI Alarm Subscription"
};
var item = new MonitoredItem(subscription.DefaultItem)
{
StartNodeId = nodeId,
DisplayName = "AlarmMonitor",
SamplingInterval = Interval,
NodeClass = NodeClass.Object,
AttributeId = Attributes.EventNotifier,
Filter = CreateEventFilter()
};
item.Notification += (_, e) =>
{
if (e.NotificationValue is EventFieldList eventFields)
{
PrintAlarmEvent(eventFields);
}
};
subscription.AddItem(item);
session.AddSubscription(subscription);
await subscription.CreateAsync();
Console.WriteLine($"Subscribed to alarm events on {nodeId} (interval: {Interval}ms). Press Ctrl+C to stop.");
Console.Out.Flush();
if (Refresh)
{
try
{
await subscription.ConditionRefreshAsync();
Console.WriteLine("Condition refresh requested.");
}
catch (Exception ex)
{
Console.WriteLine($"Condition refresh not supported: {ex.Message}");
}
Console.Out.Flush();
}
var ct = console.RegisterCancellationHandler();
while (!ct.IsCancellationRequested)
{
await Task.Delay(2000, ct).ContinueWith(_ => { });
}
await console.Output.WriteLineAsync("Unsubscribed.");
}
private static EventFilter CreateEventFilter()
{
var filter = new EventFilter();
// 0: EventId
filter.AddSelectClause(ObjectTypeIds.BaseEventType, BrowseNames.EventId);
// 1: EventType
filter.AddSelectClause(ObjectTypeIds.BaseEventType, BrowseNames.EventType);
// 2: SourceName
filter.AddSelectClause(ObjectTypeIds.BaseEventType, BrowseNames.SourceName);
// 3: Time
filter.AddSelectClause(ObjectTypeIds.BaseEventType, BrowseNames.Time);
// 4: Message
filter.AddSelectClause(ObjectTypeIds.BaseEventType, BrowseNames.Message);
// 5: Severity
filter.AddSelectClause(ObjectTypeIds.BaseEventType, BrowseNames.Severity);
// 6: ConditionName
filter.AddSelectClause(ObjectTypeIds.ConditionType, BrowseNames.ConditionName);
// 7: Retain
filter.AddSelectClause(ObjectTypeIds.ConditionType, BrowseNames.Retain);
// 8: AckedState/Id
filter.AddSelectClause(ObjectTypeIds.AcknowledgeableConditionType, "AckedState/Id");
// 9: ActiveState/Id
filter.AddSelectClause(ObjectTypeIds.AlarmConditionType, "ActiveState/Id");
// 10: EnabledState/Id
filter.AddSelectClause(ObjectTypeIds.AlarmConditionType, "EnabledState/Id");
// 11: SuppressedOrShelved
filter.AddSelectClause(ObjectTypeIds.AlarmConditionType, "SuppressedOrShelved");
return filter;
}
private static void PrintAlarmEvent(EventFieldList eventFields)
{
var fields = eventFields.EventFields;
if (fields == null || fields.Count < 6)
return;
var time = fields.Count > 3 ? fields[3].Value as DateTime? : null;
var sourceName = fields.Count > 2 ? fields[2].Value as string : null;
var message = fields.Count > 4 ? (fields[4].Value as LocalizedText)?.Text : null;
var severity = fields.Count > 5 ? fields[5].Value : null;
var conditionName = fields.Count > 6 ? fields[6].Value as string : null;
var retain = fields.Count > 7 ? fields[7].Value as bool? : null;
var ackedState = fields.Count > 8 ? fields[8].Value as bool? : null;
var activeState = fields.Count > 9 ? fields[9].Value as bool? : null;
var enabledState = fields.Count > 10 ? fields[10].Value as bool? : null;
var suppressed = fields.Count > 11 ? fields[11].Value as bool? : null;
Console.WriteLine($"[{time:O}] ALARM {sourceName}");
if (conditionName != null)
Console.WriteLine($" Condition: {conditionName}");
if (activeState.HasValue || ackedState.HasValue)
{
var state = FormatAlarmState(activeState, ackedState);
Console.WriteLine($" State: {state}");
}
if (enabledState.HasValue)
Console.WriteLine($" Enabled: {enabledState.Value}");
Console.WriteLine($" Severity: {severity}");
if (!string.IsNullOrEmpty(message))
Console.WriteLine($" Message: {message}");
if (retain.HasValue)
Console.WriteLine($" Retain: {retain.Value}");
if (suppressed == true)
Console.WriteLine($" Suppressed/Shelved: True");
Console.WriteLine();
}
private static string FormatAlarmState(bool? active, bool? acked)
{
var activePart = active == true ? "Active" : "Inactive";
var ackedPart = acked == true ? "Acknowledged" : "Unacknowledged";
return $"{activePart}, {ackedPart}";
}
}

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@@ -1,122 +0,0 @@
using CliFx;
using CliFx.Attributes;
using CliFx.Infrastructure;
using Opc.Ua;
using Opc.Ua.Client;
namespace OpcUaCli.Commands;
[Command("browse", Description = "Browse the OPC UA address space")]
public class BrowseCommand : ICommand
{
/// <summary>
/// Gets the OPC UA endpoint URL to connect to before browsing.
/// </summary>
[CommandOption("url", 'u', Description = "OPC UA server endpoint URL", IsRequired = true)]
public string Url { get; init; } = default!;
[CommandOption("username", 'U', Description = "Username for authentication")]
public string? Username { get; init; }
[CommandOption("password", 'P', Description = "Password for authentication")]
public string? Password { get; init; }
[CommandOption("security", 'S', Description = "Transport security: none, sign, encrypt (default: none)")]
public string Security { get; init; } = "none";
[CommandOption("failover-urls", 'F', Description = "Comma-separated failover endpoint URLs for redundancy")]
public string? FailoverUrls { get; init; }
/// <summary>
/// Gets the optional node identifier to browse from; defaults to the OPC UA Objects folder.
/// </summary>
[CommandOption("node", 'n', Description = "Node ID to browse (default: Objects folder)")]
public string? NodeId { get; init; }
/// <summary>
/// Gets the maximum browse depth when recursive traversal is enabled.
/// </summary>
[CommandOption("depth", 'd', Description = "Maximum browse depth")]
public int Depth { get; init; } = 1;
/// <summary>
/// Gets a value indicating whether browse recursion should continue into child objects.
/// </summary>
[CommandOption("recursive", 'r', Description = "Browse recursively (uses --depth as max depth)")]
public bool Recursive { get; init; }
/// <summary>
/// Connects to the OPC UA endpoint and writes the browse tree to the console.
/// </summary>
/// <param name="console">The console used to emit browse output.</param>
public async ValueTask ExecuteAsync(IConsole console)
{
var urls = FailoverUrlParser.Parse(Url, FailoverUrls);
using var failover = new OpcUaFailoverHelper(urls, Username, Password, Security);
using var session = await failover.ConnectAsync();
var startNode = string.IsNullOrEmpty(NodeId)
? ObjectIds.ObjectsFolder
: new NodeId(NodeId);
var maxDepth = Recursive ? Depth : 1;
await BrowseNodeAsync(session, console, startNode, maxDepth, 0);
}
private static async Task BrowseNodeAsync(
ISession session, IConsole console, NodeId nodeId, int maxDepth, int currentDepth)
{
var indent = new string(' ', currentDepth * 2);
var (_, continuationPoint, references) = await session.BrowseAsync(
null,
null,
nodeId,
0u,
BrowseDirection.Forward,
ReferenceTypeIds.HierarchicalReferences,
true,
(uint)NodeClass.Object | (uint)NodeClass.Variable | (uint)NodeClass.Method);
if (references == null) return;
// Handle continuation points for large result sets
while (references.Count > 0)
{
foreach (var reference in references)
{
var nodeClass = reference.NodeClass;
var marker = nodeClass switch
{
NodeClass.Object => "[Object]",
NodeClass.Variable => "[Variable]",
NodeClass.Method => "[Method]",
_ => $"[{nodeClass}]"
};
await console.Output.WriteLineAsync(
$"{indent}{marker} {reference.DisplayName} (NodeId: {reference.NodeId})");
if (currentDepth + 1 < maxDepth && nodeClass == NodeClass.Object)
{
var childNodeId = ExpandedNodeId.ToNodeId(
reference.NodeId, session.NamespaceUris);
await BrowseNodeAsync(session, console, childNodeId, maxDepth, currentDepth + 1);
}
}
// Follow continuation point if present
if (continuationPoint != null && continuationPoint.Length > 0)
{
var (_, nextCp, nextRefs) = await session.BrowseNextAsync(
null, false, continuationPoint);
continuationPoint = nextCp;
references = nextRefs;
}
else
{
break;
}
}
}
}

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@@ -1,43 +0,0 @@
using CliFx;
using CliFx.Attributes;
using CliFx.Infrastructure;
namespace OpcUaCli.Commands;
[Command("connect", Description = "Test connection to an OPC UA server")]
public class ConnectCommand : ICommand
{
/// <summary>
/// Gets the OPC UA endpoint URL to test.
/// </summary>
[CommandOption("url", 'u', Description = "OPC UA server endpoint URL", IsRequired = true)]
public string Url { get; init; } = default!;
[CommandOption("username", 'U', Description = "Username for authentication")]
public string? Username { get; init; }
[CommandOption("password", 'P', Description = "Password for authentication")]
public string? Password { get; init; }
[CommandOption("security", 'S', Description = "Transport security: none, sign, encrypt (default: none)")]
public string Security { get; init; } = "none";
[CommandOption("failover-urls", 'F', Description = "Comma-separated failover endpoint URLs for redundancy")]
public string? FailoverUrls { get; init; }
/// <summary>
/// Connects to the OPC UA endpoint and prints the resolved server metadata.
/// </summary>
/// <param name="console">The console used to report connection results.</param>
public async ValueTask ExecuteAsync(IConsole console)
{
var urls = FailoverUrlParser.Parse(Url, FailoverUrls);
using var failover = new OpcUaFailoverHelper(urls, Username, Password, Security);
using var session = await failover.ConnectAsync();
await console.Output.WriteLineAsync($"Connected to: {session.Endpoint.EndpointUrl}");
await console.Output.WriteLineAsync($"Server: {session.Endpoint.Server!.ApplicationName}");
await console.Output.WriteLineAsync($"Security Mode: {session.Endpoint.SecurityMode}");
await console.Output.WriteLineAsync($"Security Policy: {session.Endpoint.SecurityPolicyUri}");
await console.Output.WriteLineAsync("Connection successful.");
}
}

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@@ -1,243 +0,0 @@
using CliFx;
using CliFx.Attributes;
using CliFx.Infrastructure;
using Opc.Ua;
using Opc.Ua.Client;
namespace OpcUaCli.Commands;
[Command("historyread", Description = "Read historical data from a node")]
public class HistoryReadCommand : ICommand
{
/// <summary>
/// Gets the OPC UA endpoint URL for the server that exposes the historized node.
/// </summary>
[CommandOption("url", 'u', Description = "OPC UA server endpoint URL", IsRequired = true)]
public string Url { get; init; } = default!;
[CommandOption("username", 'U', Description = "Username for authentication")]
public string? Username { get; init; }
[CommandOption("password", 'P', Description = "Password for authentication")]
public string? Password { get; init; }
[CommandOption("security", 'S', Description = "Transport security: none, sign, encrypt (default: none)")]
public string Security { get; init; } = "none";
[CommandOption("failover-urls", 'F', Description = "Comma-separated failover endpoint URLs for redundancy")]
public string? FailoverUrls { get; init; }
/// <summary>
/// Gets the node identifier for the historized variable to query.
/// </summary>
[CommandOption("node", 'n', Description = "Node ID (e.g. ns=1;s=TestMachine_001.TestHistoryValue)", IsRequired = true)]
public string NodeId { get; init; } = default!;
/// <summary>
/// Gets the requested history start time string supplied by the operator.
/// </summary>
[CommandOption("start", Description = "Start time (ISO 8601 or date string, default: 24 hours ago)")]
public string? StartTime { get; init; }
/// <summary>
/// Gets the requested history end time string supplied by the operator.
/// </summary>
[CommandOption("end", Description = "End time (ISO 8601 or date string, default: now)")]
public string? EndTime { get; init; }
/// <summary>
/// Gets the maximum number of raw history values that should be returned to the console.
/// </summary>
[CommandOption("max", Description = "Maximum number of values to return")]
public int MaxValues { get; init; } = 1000;
/// <summary>
/// Gets the optional aggregate name to request when the operator wants processed history instead of raw values.
/// </summary>
[CommandOption("aggregate", Description = "Aggregate function: Average, Minimum, Maximum, Count")]
public string? Aggregate { get; init; }
/// <summary>
/// Gets the aggregate processing interval, in milliseconds, for processed history reads.
/// </summary>
[CommandOption("interval", Description = "Processing interval in milliseconds for aggregates")]
public double IntervalMs { get; init; } = 3600000;
/// <summary>
/// Connects to the target server and prints raw or aggregate historical data for the requested node.
/// </summary>
/// <param name="console">The CLI console used for output, errors, and cancellation handling.</param>
public async ValueTask ExecuteAsync(IConsole console)
{
var urls = FailoverUrlParser.Parse(Url, FailoverUrls);
using var failover = new OpcUaFailoverHelper(urls, Username, Password, Security);
using var session = await failover.ConnectAsync();
var nodeId = new NodeId(NodeId);
var start = string.IsNullOrEmpty(StartTime) ? DateTime.UtcNow.AddHours(-24) : DateTime.Parse(StartTime).ToUniversalTime();
var end = string.IsNullOrEmpty(EndTime) ? DateTime.UtcNow : DateTime.Parse(EndTime).ToUniversalTime();
if (string.IsNullOrEmpty(Aggregate))
{
await ReadRawAsync(session, console, nodeId, start, end);
}
else
{
await ReadProcessedAsync(session, console, nodeId, start, end);
}
}
private async Task ReadRawAsync(Session session, IConsole console, NodeId nodeId, DateTime start, DateTime end)
{
var details = new ReadRawModifiedDetails
{
StartTime = start,
EndTime = end,
NumValuesPerNode = (uint)MaxValues,
IsReadModified = false,
ReturnBounds = false
};
var nodesToRead = new HistoryReadValueIdCollection
{
new HistoryReadValueId { NodeId = nodeId }
};
await console.Output.WriteLineAsync(
$"History for {NodeId} ({start:yyyy-MM-dd HH:mm} → {end:yyyy-MM-dd HH:mm})");
await console.Output.WriteLineAsync();
await console.Output.WriteLineAsync($"{"Timestamp",-35} {"Value",-15} {"Status"}");
int totalValues = 0;
byte[]? continuationPoint = null;
do
{
if (continuationPoint != null)
nodesToRead[0].ContinuationPoint = continuationPoint;
session.HistoryRead(
null,
new ExtensionObject(details),
TimestampsToReturn.Source,
continuationPoint != null,
nodesToRead,
out var results,
out _);
if (results == null || results.Count == 0)
break;
var result = results[0];
if (StatusCode.IsBad(result.StatusCode))
{
await console.Error.WriteLineAsync($"HistoryRead failed: {result.StatusCode}");
break;
}
if (result.HistoryData == null)
{
await console.Error.WriteLineAsync($"No history data returned (status: {result.StatusCode})");
break;
}
if (result.HistoryData is ExtensionObject ext && ext.Body is HistoryData historyData)
{
foreach (var dv in historyData.DataValues)
{
var status = StatusCode.IsGood(dv.StatusCode) ? "Good"
: StatusCode.IsBad(dv.StatusCode) ? "Bad"
: "Uncertain";
await console.Output.WriteLineAsync(
$"{dv.SourceTimestamp.ToString("O"),-35} {dv.Value,-15} {status}");
totalValues++;
}
}
continuationPoint = result.ContinuationPoint;
}
while (continuationPoint != null && continuationPoint.Length > 0 && totalValues < MaxValues);
await console.Output.WriteLineAsync();
await console.Output.WriteLineAsync($"{totalValues} values returned.");
}
private async Task ReadProcessedAsync(Session session, IConsole console, NodeId nodeId, DateTime start, DateTime end)
{
var aggregateId = MapAggregateName(Aggregate!);
if (aggregateId == null)
{
await console.Error.WriteLineAsync($"Unknown aggregate: {Aggregate}. Supported: Average, Minimum, Maximum, Count, Start, End");
return;
}
var details = new ReadProcessedDetails
{
StartTime = start,
EndTime = end,
ProcessingInterval = IntervalMs,
AggregateType = new NodeIdCollection { aggregateId }
};
var nodesToRead = new HistoryReadValueIdCollection
{
new HistoryReadValueId { NodeId = nodeId }
};
session.HistoryRead(
null,
new ExtensionObject(details),
TimestampsToReturn.Source,
false,
nodesToRead,
out var results,
out _);
await console.Output.WriteLineAsync(
$"History for {NodeId} ({Aggregate}, interval={IntervalMs}ms)");
await console.Output.WriteLineAsync();
await console.Output.WriteLineAsync($"{"Timestamp",-35} {"Value",-15} {"Status"}");
int totalValues = 0;
if (results != null && results.Count > 0)
{
var result = results[0];
if (StatusCode.IsBad(result.StatusCode))
{
await console.Error.WriteLineAsync($"HistoryRead failed: {result.StatusCode}");
return;
}
if (result.HistoryData is ExtensionObject ext && ext.Body is HistoryData historyData)
{
foreach (var dv in historyData.DataValues)
{
var status = StatusCode.IsGood(dv.StatusCode) ? "Good"
: StatusCode.IsBad(dv.StatusCode) ? "Bad"
: "Uncertain";
await console.Output.WriteLineAsync(
$"{dv.SourceTimestamp.ToString("O"),-35} {dv.Value,-15} {status}");
totalValues++;
}
}
}
await console.Output.WriteLineAsync();
await console.Output.WriteLineAsync($"{totalValues} values returned.");
}
private static NodeId? MapAggregateName(string name)
{
return name.ToLowerInvariant() switch
{
"average" => ObjectIds.AggregateFunction_Average,
"minimum" or "min" => ObjectIds.AggregateFunction_Minimum,
"maximum" or "max" => ObjectIds.AggregateFunction_Maximum,
"count" => ObjectIds.AggregateFunction_Count,
"start" or "first" => ObjectIds.AggregateFunction_Start,
"end" or "last" => ObjectIds.AggregateFunction_End,
_ => null
};
}
}

View File

@@ -1,55 +0,0 @@
using CliFx;
using CliFx.Attributes;
using CliFx.Infrastructure;
using Opc.Ua;
using Opc.Ua.Client;
namespace OpcUaCli.Commands;
[Command("read", Description = "Read a value from a node")]
public class ReadCommand : ICommand
{
/// <summary>
/// Gets the OPC UA endpoint URL to connect to before reading.
/// </summary>
[CommandOption("url", 'u', Description = "OPC UA server endpoint URL", IsRequired = true)]
public string Url { get; init; } = default!;
[CommandOption("username", 'U', Description = "Username for authentication")]
public string? Username { get; init; }
[CommandOption("password", 'P', Description = "Password for authentication")]
public string? Password { get; init; }
[CommandOption("security", 'S', Description = "Transport security: none, sign, encrypt (default: none)")]
public string Security { get; init; } = "none";
[CommandOption("failover-urls", 'F', Description = "Comma-separated failover endpoint URLs for redundancy")]
public string? FailoverUrls { get; init; }
/// <summary>
/// Gets the node identifier whose value should be read.
/// </summary>
[CommandOption("node", 'n', Description = "Node ID (e.g. ns=2;s=MyNode)", IsRequired = true)]
public string NodeId { get; init; } = default!;
/// <summary>
/// Connects to the endpoint, reads the target node, and prints the returned value details.
/// </summary>
/// <param name="console">The console used to report the read result.</param>
public async ValueTask ExecuteAsync(IConsole console)
{
var urls = FailoverUrlParser.Parse(Url, FailoverUrls);
using var failover = new OpcUaFailoverHelper(urls, Username, Password, Security);
using var session = await failover.ConnectAsync();
var node = new NodeId(NodeId);
var value = await session.ReadValueAsync(node);
await console.Output.WriteLineAsync($"Node: {NodeId}");
await console.Output.WriteLineAsync($"Value: {value.Value}");
await console.Output.WriteLineAsync($"Status: {value.StatusCode}");
await console.Output.WriteLineAsync($"Source Time: {value.SourceTimestamp:O}");
await console.Output.WriteLineAsync($"Server Time: {value.ServerTimestamp:O}");
}
}

View File

@@ -1,75 +0,0 @@
using CliFx;
using CliFx.Attributes;
using CliFx.Infrastructure;
using Opc.Ua;
using Opc.Ua.Client;
namespace OpcUaCli.Commands;
[Command("redundancy", Description = "Read redundancy state from an OPC UA server")]
public class RedundancyCommand : ICommand
{
[CommandOption("url", 'u', Description = "OPC UA server endpoint URL", IsRequired = true)]
public string Url { get; init; } = default!;
[CommandOption("username", 'U', Description = "Username for authentication")]
public string? Username { get; init; }
[CommandOption("password", 'P', Description = "Password for authentication")]
public string? Password { get; init; }
[CommandOption("security", 'S', Description = "Transport security: none, sign, encrypt (default: none)")]
public string Security { get; init; } = "none";
[CommandOption("failover-urls", 'F', Description = "Comma-separated failover endpoint URLs for redundancy")]
public string? FailoverUrls { get; init; }
public async ValueTask ExecuteAsync(IConsole console)
{
var urls = FailoverUrlParser.Parse(Url, FailoverUrls);
using var failover = new OpcUaFailoverHelper(urls, Username, Password, Security);
using var session = await failover.ConnectAsync();
// Read RedundancySupport
var redundancySupportValue = await session.ReadValueAsync(VariableIds.Server_ServerRedundancy_RedundancySupport);
var redundancyMode = (RedundancySupport)(int)redundancySupportValue.Value;
await console.Output.WriteLineAsync($"Redundancy Mode: {redundancyMode}");
// Read ServiceLevel
var serviceLevelValue = await session.ReadValueAsync(VariableIds.Server_ServiceLevel);
var serviceLevel = (byte)serviceLevelValue.Value;
await console.Output.WriteLineAsync($"Service Level: {serviceLevel}");
// Read ServerUriArray (only present for non-transparent redundancy)
try
{
var serverUriArrayValue = await session.ReadValueAsync(VariableIds.Server_ServerRedundancy_ServerUriArray);
if (serverUriArrayValue.Value is string[] uris && uris.Length > 0)
{
await console.Output.WriteLineAsync("Server URIs:");
foreach (var uri in uris)
{
await console.Output.WriteLineAsync($" - {uri}");
}
}
}
catch
{
// ServerUriArray may not be present when RedundancySupport is None
}
// Read ServerArray for the local server's ApplicationUri
try
{
var serverArrayValue = await session.ReadValueAsync(VariableIds.Server_ServerArray);
if (serverArrayValue.Value is string[] serverArray && serverArray.Length > 0)
{
await console.Output.WriteLineAsync($"Application URI: {serverArray[0]}");
}
}
catch
{
// Informational only
}
}
}

View File

@@ -1,170 +0,0 @@
using CliFx;
using CliFx.Attributes;
using CliFx.Infrastructure;
using Opc.Ua;
using Opc.Ua.Client;
namespace OpcUaCli.Commands;
[Command("subscribe", Description = "Monitor a node for value changes")]
public class SubscribeCommand : ICommand
{
[CommandOption("url", 'u', Description = "OPC UA server endpoint URL", IsRequired = true)]
public string Url { get; init; } = default!;
[CommandOption("username", 'U', Description = "Username for authentication")]
public string? Username { get; init; }
[CommandOption("password", 'P', Description = "Password for authentication")]
public string? Password { get; init; }
[CommandOption("security", 'S', Description = "Transport security: none, sign, encrypt (default: none)")]
public string Security { get; init; } = "none";
[CommandOption("failover-urls", 'F', Description = "Comma-separated failover endpoint URLs for redundancy")]
public string? FailoverUrls { get; init; }
[CommandOption("node", 'n', Description = "Node ID to monitor", IsRequired = true)]
public string NodeId { get; init; } = default!;
[CommandOption("interval", 'i', Description = "Polling interval in milliseconds")]
public int Interval { get; init; } = 1000;
public async ValueTask ExecuteAsync(IConsole console)
{
var urls = FailoverUrlParser.Parse(Url, FailoverUrls);
var hasFailover = urls.Length > 1;
if (hasFailover)
{
await RunWithFailoverAsync(console, urls);
}
else
{
await RunSimpleAsync(console);
}
}
private async Task RunSimpleAsync(IConsole console)
{
using var session = await OpcUaHelper.ConnectAsync(Url, Username, Password, Security);
var (subscription, item) = await CreateSubscriptionAsync(session);
await console.Output.WriteLineAsync($"Subscribed to {NodeId} (interval: {Interval}ms). Press Ctrl+C to stop.");
var ct = console.RegisterCancellationHandler();
await MonitorLoopAsync(session, subscription, item, ct);
await console.Output.WriteLineAsync("Unsubscribed.");
}
private async Task RunWithFailoverAsync(IConsole console, string[] urls)
{
using var failover = new OpcUaFailoverHelper(urls, Username, Password, Security);
var session = await failover.ConnectAsync();
Subscription? subscription = null;
MonitoredItem? item = null;
var subLock = new object();
(subscription, item) = await CreateSubscriptionAsync(session);
await console.Output.WriteLineAsync(
$"Subscribed to {NodeId} (interval: {Interval}ms, failover enabled). Press Ctrl+C to stop.");
// Install failover handler
failover.OnFailover += (oldUrl, newUrl) =>
{
Console.WriteLine($" [failover] Switched from {oldUrl} to {newUrl}");
};
failover.InstallKeepAliveHandler(async newSession =>
{
try
{
var (newSub, newItem) = await CreateSubscriptionAsync(newSession);
lock (subLock)
{
subscription = newSub;
item = newItem;
}
Console.WriteLine($" [failover] Re-subscribed to {NodeId} on {failover.CurrentEndpointUrl}");
}
catch (Exception ex)
{
Console.WriteLine($" [failover] Failed to re-subscribe: {ex.Message}");
}
});
var ct = console.RegisterCancellationHandler();
int tick = 0;
while (!ct.IsCancellationRequested)
{
await Task.Delay(2000, ct).ContinueWith(_ => { });
tick++;
Session? currentSession;
MonitoredItem? currentItem;
Subscription? currentSub;
lock (subLock)
{
currentSession = failover.Session;
currentSub = subscription;
currentItem = item;
}
Console.WriteLine(
$" [tick {tick}] Server={failover.CurrentEndpointUrl}, Connected={currentSession?.Connected}, " +
$"Sub.Id={currentSub?.Id}, " +
$"LastValue={((currentItem?.LastValue as MonitoredItemNotification)?.Value?.Value)} " +
$"({((currentItem?.LastValue as MonitoredItemNotification)?.Value?.StatusCode)})");
}
await console.Output.WriteLineAsync("Unsubscribed.");
}
private async Task<(Subscription, MonitoredItem)> CreateSubscriptionAsync(Session session)
{
var subscription = new Subscription(session.DefaultSubscription)
{
PublishingInterval = Interval,
DisplayName = "CLI Subscription"
};
var item = new MonitoredItem(subscription.DefaultItem)
{
StartNodeId = new NodeId(NodeId),
DisplayName = NodeId,
SamplingInterval = Interval
};
item.Notification += (_, e) =>
{
if (e.NotificationValue is MonitoredItemNotification notification)
{
Console.WriteLine(
$"[{notification.Value.SourceTimestamp:O}] {NodeId} = {notification.Value.Value} ({notification.Value.StatusCode})");
}
};
subscription.AddItem(item);
session.AddSubscription(subscription);
await subscription.CreateAsync();
return (subscription, item);
}
private static async Task MonitorLoopAsync(Session session, Subscription subscription, MonitoredItem item, CancellationToken ct)
{
int tick = 0;
while (!ct.IsCancellationRequested)
{
await Task.Delay(2000, ct).ContinueWith(_ => { });
tick++;
Console.WriteLine(
$" [tick {tick}] Session={session.Connected}, Sub.Id={subscription.Id}, " +
$"PublishingEnabled={subscription.PublishingEnabled}, " +
$"MonitoredItemCount={subscription.MonitoredItemCount}, " +
$"ItemStatus={item.Status?.Id}, " +
$"LastNotification={((item.LastValue as MonitoredItemNotification)?.Value?.Value)} ({((item.LastValue as MonitoredItemNotification)?.Value?.StatusCode)})");
}
}
}

View File

@@ -1,71 +0,0 @@
using CliFx;
using CliFx.Attributes;
using CliFx.Infrastructure;
using Opc.Ua;
using Opc.Ua.Client;
namespace OpcUaCli.Commands;
[Command("write", Description = "Write a value to a node")]
public class WriteCommand : ICommand
{
/// <summary>
/// Gets the OPC UA endpoint URL to connect to before issuing the write.
/// </summary>
[CommandOption("url", 'u', Description = "OPC UA server endpoint URL", IsRequired = true)]
public string Url { get; init; } = default!;
[CommandOption("username", 'U', Description = "Username for authentication")]
public string? Username { get; init; }
[CommandOption("password", 'P', Description = "Password for authentication")]
public string? Password { get; init; }
[CommandOption("security", 'S', Description = "Transport security: none, sign, encrypt (default: none)")]
public string Security { get; init; } = "none";
[CommandOption("failover-urls", 'F', Description = "Comma-separated failover endpoint URLs for redundancy")]
public string? FailoverUrls { get; init; }
/// <summary>
/// Gets the node identifier that should receive the write.
/// </summary>
[CommandOption("node", 'n', Description = "Node ID (e.g. ns=2;s=MyNode)", IsRequired = true)]
public string NodeId { get; init; } = default!;
/// <summary>
/// Gets the textual value supplied on the command line before type conversion.
/// </summary>
[CommandOption("value", 'v', Description = "Value to write", IsRequired = true)]
public string Value { get; init; } = default!;
/// <summary>
/// Connects to the OPC UA endpoint, converts the supplied value, and writes it to the target node.
/// </summary>
/// <param name="console">The console used to report the write result.</param>
public async ValueTask ExecuteAsync(IConsole console)
{
var urls = FailoverUrlParser.Parse(Url, FailoverUrls);
using var failover = new OpcUaFailoverHelper(urls, Username, Password, Security);
using var session = await failover.ConnectAsync();
var node = new NodeId(NodeId);
var current = await session.ReadValueAsync(node);
var typedValue = OpcUaHelper.ConvertValue(Value, current.Value);
var writeValue = new WriteValue
{
NodeId = node,
AttributeId = Attributes.Value,
Value = new DataValue(new Variant(typedValue))
};
var request = new WriteValueCollection { writeValue };
var response = await session.WriteAsync(null, request, CancellationToken.None);
if (StatusCode.IsGood(response.Results[0]))
await console.Output.WriteLineAsync($"Write successful: {NodeId} = {typedValue}");
else
await console.Output.WriteLineAsync($"Write failed: {response.Results[0]}");
}
}

View File

@@ -1,156 +0,0 @@
using Opc.Ua;
using Opc.Ua.Client;
namespace OpcUaCli;
/// <summary>
/// Manages OPC UA client sessions with automatic failover across a set of redundant server endpoints.
/// </summary>
public sealed class OpcUaFailoverHelper : IDisposable
{
private readonly string[] _endpointUrls;
private readonly string? _username;
private readonly string? _password;
private readonly string _security;
private Session? _session;
private int _currentIndex;
private bool _disposed;
/// <summary>
/// Gets the active session, or null if not connected.
/// </summary>
public Session? Session => _session;
/// <summary>
/// Gets the endpoint URL the session is currently connected to.
/// </summary>
public string? CurrentEndpointUrl => _currentIndex < _endpointUrls.Length ? _endpointUrls[_currentIndex] : null;
/// <summary>
/// Raised when a failover occurs, providing the old and new endpoint URLs.
/// </summary>
public event Action<string?, string>? OnFailover;
public OpcUaFailoverHelper(string[] endpointUrls, string? username = null, string? password = null, string security = "none")
{
if (endpointUrls.Length == 0)
throw new ArgumentException("At least one endpoint URL is required.");
_endpointUrls = endpointUrls;
_username = username;
_password = password;
_security = security;
_currentIndex = 0;
}
/// <summary>
/// Connects to the first reachable server in the endpoint list.
/// </summary>
public async Task<Session> ConnectAsync()
{
for (int attempt = 0; attempt < _endpointUrls.Length; attempt++)
{
var idx = (_currentIndex + attempt) % _endpointUrls.Length;
var url = _endpointUrls[idx];
try
{
Console.WriteLine($" [failover] Connecting to {url}...");
_session = await OpcUaHelper.ConnectAsync(url, _username, _password, _security);
_currentIndex = idx;
Console.WriteLine($" [failover] Connected to {url}");
return _session;
}
catch (Exception ex)
{
Console.WriteLine($" [failover] Failed to connect to {url}: {ex.Message}");
}
}
throw new InvalidOperationException("All redundant servers are unreachable.");
}
/// <summary>
/// Attempts to fail over to the next available server in the set.
/// Closes the old session if still open.
/// </summary>
/// <returns>The new session.</returns>
public async Task<Session> FailoverAsync()
{
var oldUrl = CurrentEndpointUrl;
// Close old session
if (_session != null)
{
try { _session.Close(); } catch { }
_session.Dispose();
_session = null;
}
// Try the next server first, then cycle through all
_currentIndex = (_currentIndex + 1) % _endpointUrls.Length;
var newSession = await ConnectAsync();
OnFailover?.Invoke(oldUrl, CurrentEndpointUrl!);
return newSession;
}
/// <summary>
/// Installs a KeepAlive handler that triggers automatic failover when the session drops.
/// Returns a task that completes when the session is lost and failover is needed.
/// </summary>
public void InstallKeepAliveHandler(Action<Session> onReconnected)
{
if (_session == null) return;
_session.KeepAlive += async (session, e) =>
{
if (e.Status == null || ServiceResult.IsGood(e.Status))
return;
Console.WriteLine($" [failover] Session lost (status={e.Status}). Attempting failover...");
try
{
var newSession = await FailoverAsync();
onReconnected(newSession);
}
catch (Exception ex)
{
Console.WriteLine($" [failover] All servers unreachable: {ex.Message}");
}
};
}
public void Dispose()
{
if (_disposed) return;
_disposed = true;
if (_session != null)
{
try { _session.Close(); } catch { }
_session.Dispose();
}
}
}
/// <summary>
/// Parses the --failover-urls option into an array of endpoint URLs.
/// If failover URLs are provided, the primary URL is prepended to form the full set.
/// If not provided, returns only the primary URL (no failover).
/// </summary>
public static class FailoverUrlParser
{
public static string[] Parse(string primaryUrl, string? failoverUrls)
{
if (string.IsNullOrWhiteSpace(failoverUrls))
return new[] { primaryUrl };
var urls = new List<string> { primaryUrl };
foreach (var url in failoverUrls.Split(',', StringSplitOptions.RemoveEmptyEntries))
{
var trimmed = url.Trim();
if (!string.IsNullOrEmpty(trimmed) && trimmed != primaryUrl)
urls.Add(trimmed);
}
return urls.ToArray();
}
}

View File

@@ -1,188 +0,0 @@
using Opc.Ua;
using Opc.Ua.Client;
using Opc.Ua.Configuration;
namespace OpcUaCli;
public static class OpcUaHelper
{
/// <summary>
/// Creates an OPC UA client session for the specified endpoint URL.
/// </summary>
/// <param name="endpointUrl">The OPC UA endpoint URL to connect to.</param>
/// <param name="username">Optional username for authentication.</param>
/// <param name="password">Optional password for authentication.</param>
/// <param name="security">The requested transport security mode: "none", "sign", or "encrypt".</param>
/// <returns>An active OPC UA client session.</returns>
public static async Task<Session> ConnectAsync(string endpointUrl, string? username = null, string? password = null,
string security = "none")
{
var config = new ApplicationConfiguration
{
ApplicationName = "OpcUaCli",
ApplicationUri = "urn:localhost:OpcUaCli",
ApplicationType = ApplicationType.Client,
SecurityConfiguration = new SecurityConfiguration
{
ApplicationCertificate = new CertificateIdentifier
{
StoreType = CertificateStoreType.Directory,
StorePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "OpcUaCli", "pki", "own")
},
TrustedIssuerCertificates = new CertificateTrustList
{
StoreType = CertificateStoreType.Directory,
StorePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "OpcUaCli", "pki", "issuer")
},
TrustedPeerCertificates = new CertificateTrustList
{
StoreType = CertificateStoreType.Directory,
StorePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "OpcUaCli", "pki", "trusted")
},
RejectedCertificateStore = new CertificateTrustList
{
StoreType = CertificateStoreType.Directory,
StorePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "OpcUaCli", "pki", "rejected")
},
AutoAcceptUntrustedCertificates = true
},
ClientConfiguration = new ClientConfiguration { DefaultSessionTimeout = 60000 }
};
#pragma warning disable CS0618 // Sync/obsolete API is fine for a CLI tool
await config.Validate(ApplicationType.Client);
config.CertificateValidator.CertificateValidation += (_, e) => e.Accept = true;
var requestedMode = ParseSecurityMode(security);
EndpointDescription endpoint;
if (requestedMode == MessageSecurityMode.None)
{
endpoint = CoreClientUtils.SelectEndpoint(config, endpointUrl, false);
}
else
{
// For secure connections, ensure the client has a certificate
var app = new ApplicationInstance
{
ApplicationName = "OpcUaCli",
ApplicationType = ApplicationType.Client,
ApplicationConfiguration = config
};
await app.CheckApplicationInstanceCertificatesAsync(false, 2048);
// Discover endpoints and pick the one matching the requested security mode
endpoint = SelectSecureEndpoint(config, endpointUrl, requestedMode);
}
var endpointConfig = EndpointConfiguration.Create(config);
var configuredEndpoint = new ConfiguredEndpoint(null, endpoint, endpointConfig);
UserIdentity identity = (username != null)
? new UserIdentity(username, System.Text.Encoding.UTF8.GetBytes(password ?? ""))
: new UserIdentity();
var session = await Session.Create(
config,
configuredEndpoint,
false,
"OpcUaCli",
60000,
identity,
null);
return session;
#pragma warning restore CS0618
}
/// <summary>
/// Parses the security mode string from the CLI option.
/// </summary>
private static MessageSecurityMode ParseSecurityMode(string security)
{
return (security ?? "none").Trim().ToLowerInvariant() switch
{
"none" => MessageSecurityMode.None,
"sign" => MessageSecurityMode.Sign,
"encrypt" or "signandencrypt" => MessageSecurityMode.SignAndEncrypt,
_ => throw new ArgumentException(
$"Unknown security mode '{security}'. Valid values: none, sign, encrypt")
};
}
/// <summary>
/// Discovers server endpoints and selects one matching the requested security mode,
/// preferring Basic256Sha256 when multiple matches exist.
/// </summary>
private static EndpointDescription SelectSecureEndpoint(ApplicationConfiguration config,
string endpointUrl, MessageSecurityMode requestedMode)
{
// Use discovery to get all endpoints
using var client = DiscoveryClient.Create(new Uri(endpointUrl));
var allEndpoints = client.GetEndpoints(null);
EndpointDescription? best = null;
foreach (var ep in allEndpoints)
{
if (ep.SecurityMode != requestedMode)
continue;
if (best == null)
{
best = ep;
continue;
}
// Prefer Basic256Sha256
if (ep.SecurityPolicyUri == SecurityPolicies.Basic256Sha256)
best = ep;
}
if (best == null)
{
var available = string.Join(", ", allEndpoints.Select(e => $"{e.SecurityMode}/{e.SecurityPolicyUri}"));
throw new InvalidOperationException(
$"No endpoint found with security mode '{requestedMode}'. Available endpoints: {available}");
}
// Rewrite endpoint URL to use the user-supplied hostname instead of the server's
// internal address (e.g., 0.0.0.0 -> localhost) to handle NAT/hostname differences
var serverUri = new Uri(best.EndpointUrl);
var requestedUri = new Uri(endpointUrl);
if (serverUri.Host != requestedUri.Host)
{
var builder = new UriBuilder(best.EndpointUrl)
{
Host = requestedUri.Host
};
best.EndpointUrl = builder.ToString();
}
return best;
}
/// <summary>
/// Converts a raw command-line string into the runtime type expected by the target node.
/// </summary>
/// <param name="rawValue">The raw string supplied by the user.</param>
/// <param name="currentValue">The current node value used to infer the target type.</param>
/// <returns>A typed value suitable for an OPC UA write request.</returns>
public static object ConvertValue(string rawValue, object? currentValue)
{
return currentValue switch
{
bool => bool.Parse(rawValue),
byte => byte.Parse(rawValue),
short => short.Parse(rawValue),
ushort => ushort.Parse(rawValue),
int => int.Parse(rawValue),
uint => uint.Parse(rawValue),
long => long.Parse(rawValue),
ulong => ulong.Parse(rawValue),
float => float.Parse(rawValue),
double => double.Parse(rawValue),
_ => rawValue
};
}
}

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@@ -1,8 +0,0 @@
using CliFx;
return await new CliApplicationBuilder()
.AddCommandsFromThisAssembly()
.SetExecutableName("opcuacli-dotnet")
.SetDescription("OPC UA CLI - command-line tool for testing OPC UA servers")
.Build()
.RunAsync(args);

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@@ -1,183 +0,0 @@
# OPC UA CLI Tool (.NET)
Command-line utility for testing OPC UA server functions. Built with the [OPC Foundation UA .NET Standard](https://github.com/OPCFoundation/UA-.NETStandard) client library and [CliFx](https://github.com/Tyrrrz/CliFx).
- **Runtime**: .NET 10
- **OPC UA Client**: OPCFoundation.NetStandard.Opc.Ua.Client
## Authentication
All commands accept optional authentication flags:
| Flag | Description |
|------|-------------|
| `-U` | Username for authentication |
| `-P` | Password for authentication |
Without credentials, the client connects anonymously. Example:
```
dotnet run -- write -u opc.tcp://localhost:4840/LmxOpcUa -n "ns=1;s=TestMachine_001.MachineID" -v "Hello" -U operator -P op123
```
## Build & Run
```bash
cd tools/opcuacli-dotnet
dotnet build
dotnet run -- <command> [options]
```
## Commands
### connect
Test connection to an OPC UA server:
```
dotnet run -- connect -u opc.tcp://localhost:4840
```
| Flag | Description |
|------|-------------|
| `-u` | OPC UA server endpoint URL (required) |
### read
Read a value from a node:
```
dotnet run -- read -u opc.tcp://localhost:4840 -n "ns=2;s=MyNode"
```
| Flag | Description |
|------|-------------|
| `-u` | OPC UA server endpoint URL (required) |
| `-n` | Node ID to read (required) |
### write
Write a value to a node (auto-detects the data type from the current value):
```
dotnet run -- write -u opc.tcp://localhost:4840 -n "ns=2;s=MyNode" -v 42
```
| Flag | Description |
|------|-------------|
| `-u` | OPC UA server endpoint URL (required) |
| `-n` | Node ID to write to (required) |
| `-v` | Value to write (required) |
### subscribe
Monitor a node for value changes:
```
dotnet run -- subscribe -u opc.tcp://localhost:4840 -n "ns=2;s=MyNode" -i 500
```
| Flag | Description |
|------|-------------|
| `-u` | OPC UA server endpoint URL (required) |
| `-n` | Node ID to monitor (required) |
| `-i` | Polling interval in milliseconds (default: 1000) |
### browse
Browse the OPC UA address space:
```bash
# Browse top-level Objects folder
dotnet run -- browse -u opc.tcp://localhost:4840
# Browse a specific node
dotnet run -- browse -u opc.tcp://localhost:4840 -n "ns=2;s=MyFolder"
# Browse recursively (depth 3)
dotnet run -- browse -u opc.tcp://localhost:4840 -r -d 3
```
| Flag | Description |
|------|-------------|
| `-u` | OPC UA server endpoint URL (required) |
| `-n` | Node ID to browse (default: Objects folder) |
| `-d` | Maximum browse depth (default: 1) |
| `-r` | Browse recursively using `--depth` as max depth |
### historyread
Read historical data from a node:
```
dotnet run -- historyread -u opc.tcp://localhost:4840/LmxOpcUa -n "ns=1;s=TestMachine_001.TestHistoryValue" --start "2026-03-25" --end "2026-03-30"
```
Read with aggregate (1-hour average):
```
dotnet run -- historyread -u opc.tcp://localhost:4840/LmxOpcUa -n "ns=1;s=TestMachine_001.TestHistoryValue" --start "2026-03-25" --end "2026-03-30" --aggregate Average --interval 3600000
```
| Flag | Description |
|------|-------------|
| `-u` | OPC UA server endpoint URL (required) |
| `-n` | Node ID to read history for (required) |
| `--start` | Start time (default: 24 hours ago) |
| `--end` | End time (default: now) |
| `--max` | Maximum number of values (default: 1000) |
| `--aggregate` | Aggregate function: Average, Minimum, Maximum, Count |
| `--interval` | Processing interval in ms for aggregates (default: 3600000) |
### alarms
Subscribe to alarm events on a node:
```
dotnet run -- alarms -u opc.tcp://localhost:4840/LmxOpcUa -n "ns=1;s=TestMachine_001"
```
With condition refresh to get current alarm states:
```
dotnet run -- alarms -u opc.tcp://localhost:4840/LmxOpcUa -n "ns=1;s=TestMachine_001" --refresh
```
| Flag | Description |
|------|-------------|
| `-u` | OPC UA server endpoint URL (required) |
| `-n` | Node ID to monitor for events (default: Server node) |
| `-i` | Publishing interval in milliseconds (default: 1000) |
| `--refresh` | Request a ConditionRefresh after subscribing |
## Example: Testing the LmxOpcUa Server
```bash
cd tools/opcuacli-dotnet
# Connect to the local OPC UA server
dotnet run -- connect -u opc.tcp://localhost:4840
# Browse the address space
dotnet run -- browse -u opc.tcp://localhost:4840 -r -d 3
# Read a tag value
dotnet run -- read -u opc.tcp://localhost:4840 -n "ns=2;s=TestMachine_001.SomeAttribute"
# Subscribe to live updates
dotnet run -- subscribe -u opc.tcp://localhost:4840 -n "ns=2;s=TestMachine_001.SomeAttribute" -i 500
```
## Example: Testing with the OPC PLC Sample Server
```bash
# Start the sample server (from another terminal)
cd tools/opcsampleserver/publish
dotnet opcplc.dll --pn=50000 --autoaccept --unsecuretransport
# Browse the sample server
dotnet run -- browse -u opc.tcp://localhost:50000 -r -d 2
# Read a sample node
dotnet run -- read -u opc.tcp://localhost:50000 -n "ns=2;s=SlowUInt1"
```

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@@ -1,16 +0,0 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net10.0</TargetFramework>
<RootNamespace>opcuacli_dotnet</RootNamespace>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="CliFx" Version="2.3.6" />
<PackageReference Include="OPCFoundation.NetStandard.Opc.Ua.Client" Version="1.5.378.106" />
</ItemGroup>
</Project>