From 4b374fd1772aba1c9795daff41e29ffcbd83b28b Mon Sep 17 00:00:00 2001
From: Joseph Doherty <dohejw01@gmail.com>
Date: Thu, 28 May 2026 11:02:49 -0400
Subject: [PATCH] feat(adminui): Test Connect button on every typed driver page

- AdminProbeService routes TestDriverConnect through
  IAdminOperationsClient with a 65s outer guard (actor side already
  clamps to [1,60]).
- Added generic AskAsync<T> to IAdminOperationsClient interface and
  AdminOperationsClient impl, delegating straight to the Akka proxy.
- DriverTestConnectButton renders the button + inline result chip,
  auto-clears after 30s, disables during in-flight.
- Wired into all 9 typed driver pages directly under the
  identity section. Sources timeout from the form's
  ProbeTimeoutSeconds; sources config JSON from the form's
  current Options (operator can test BEFORE saving).
---
 .../Interfaces/IAdminOperationsClient.cs      | 10 +++
 .../Clients/AdminOperationsClient.cs          |  8 ++
 .../Clients/AdminProbeService.cs              | 55 +++++++++++++
 .../Clients/ServiceCollectionExtensions.cs    |  1 +
 .../Clusters/Drivers/AbCipDriverPage.razor    | 10 +++
 .../Clusters/Drivers/AbLegacyDriverPage.razor | 10 +++
 .../Clusters/Drivers/FocasDriverPage.razor    | 10 +++
 .../Clusters/Drivers/GalaxyDriverPage.razor   | 10 +++
 .../HistorianWonderwareDriverPage.razor       | 10 +++
 .../Clusters/Drivers/ModbusDriverPage.razor   | 10 +++
 .../Drivers/OpcUaClientDriverPage.razor       | 10 +++
 .../Pages/Clusters/Drivers/S7DriverPage.razor | 10 +++
 .../Clusters/Drivers/TwinCATDriverPage.razor  | 10 +++
 .../Drivers/DriverTestConnectButton.razor     | 82 +++++++++++++++++++
 14 files changed, 246 insertions(+)
 create mode 100644 src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Clients/AdminProbeService.cs
 create mode 100644 src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Shared/Drivers/DriverTestConnectButton.razor

diff --git a/src/Core/ZB.MOM.WW.OtOpcUa.Commons/Interfaces/IAdminOperationsClient.cs b/src/Core/ZB.MOM.WW.OtOpcUa.Commons/Interfaces/IAdminOperationsClient.cs
index 3957b121..be992f84 100644
--- a/src/Core/ZB.MOM.WW.OtOpcUa.Commons/Interfaces/IAdminOperationsClient.cs
+++ b/src/Core/ZB.MOM.WW.OtOpcUa.Commons/Interfaces/IAdminOperationsClient.cs
@@ -14,4 +14,14 @@ public interface IAdminOperationsClient
     /// <param name="ct">The cancellation token.</param>
     /// <returns>A task representing the asynchronous operation containing the deployment start result.</returns>
     Task<StartDeploymentResult> StartDeploymentAsync(string createdBy, CancellationToken ct);
+
+    /// <summary>
+    ///     Generic Ask: forwards <paramref name="message"/> to the AdminOperationsActor
+    ///     cluster-singleton proxy and awaits a reply of type <typeparamref name="T"/>.
+    ///     The caller is responsible for applying any outer timeout via <paramref name="ct"/>.
+    /// </summary>
+    /// <typeparam name="T">Expected reply type.</typeparam>
+    /// <param name="message">The message to send.</param>
+    /// <param name="ct">Cancellation token (caller-controlled timeout).</param>
+    Task<T> AskAsync<T>(object message, CancellationToken ct);
 }
diff --git a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Clients/AdminOperationsClient.cs b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Clients/AdminOperationsClient.cs
index e3d1e61f..651ec286 100644
--- a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Clients/AdminOperationsClient.cs
+++ b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Clients/AdminOperationsClient.cs
@@ -36,4 +36,12 @@ public sealed class AdminOperationsClient : IAdminOperationsClient
         linked.CancelAfter(AskTimeout);
         return await _proxy.Ask<StartDeploymentResult>(msg, AskTimeout, linked.Token);
     }
+
+    /// <summary>
+    ///     Generic Ask — forwards any message to the AdminOperationsActor singleton proxy.
+    ///     Uses the caller-supplied <paramref name="ct"/> for cancellation; does not impose an
+    ///     additional internal timeout beyond what the proxy itself enforces.
+    /// </summary>
+    public Task<T> AskAsync<T>(object message, CancellationToken ct)
+        => _proxy.Ask<T>(message, cancellationToken: ct);
 }
diff --git a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Clients/AdminProbeService.cs b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Clients/AdminProbeService.cs
new file mode 100644
index 00000000..49415b66
--- /dev/null
+++ b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Clients/AdminProbeService.cs
@@ -0,0 +1,55 @@
+using ZB.MOM.WW.OtOpcUa.Commons.Interfaces;
+using ZB.MOM.WW.OtOpcUa.Commons.Messages.Admin;
+
+namespace ZB.MOM.WW.OtOpcUa.AdminUI.Clients;
+
+/// <summary>
+///     Thin AdminUI-side wrapper for the Test Connect operation. Dispatches a
+///     <see cref="TestDriverConnect"/> through <c>IAdminOperationsClient</c>, applies a
+///     65-second outer wall (the actor itself clamps to [1,60]s; this guards against the
+///     Ask never replying), and surfaces a friendly result for the Razor button to render.
+/// </summary>
+public sealed class AdminProbeService
+{
+    private readonly IAdminOperationsClient _client;
+
+    /// <summary>Initializes a new instance of the <see cref="AdminProbeService"/>.</summary>
+    /// <param name="client">The admin operations client used to dispatch probe requests.</param>
+    public AdminProbeService(IAdminOperationsClient client) => _client = client;
+
+    /// <summary>
+    ///     Dispatches a Test Connect probe for the supplied driver type and config JSON,
+    ///     waiting up to 65 seconds for a reply before surfacing a timeout failure.
+    /// </summary>
+    /// <param name="driverType">Driver type key (must match an installed <c>IDriverProbe.DriverType</c>).</param>
+    /// <param name="configJson">Driver config as JSON (same shape as <c>DriverInstance.DriverConfig</c>).</param>
+    /// <param name="timeoutSeconds">Per-probe timeout; actor clamps to [1, 60].</param>
+    /// <param name="ct">Optional cancellation token from the caller.</param>
+    public async Task<TestDriverConnectResult> TestAsync(
+        string driverType,
+        string configJson,
+        int timeoutSeconds,
+        CancellationToken ct = default)
+    {
+        var correlationId = Guid.NewGuid();
+        var msg = new TestDriverConnect(driverType, configJson, timeoutSeconds, correlationId);
+
+        // 65s outer guard — the actor's CTS clamps to 60s; if the Ask never returns we still want
+        // a deterministic failure surface for the UI.
+        using var outerCts = CancellationTokenSource.CreateLinkedTokenSource(ct);
+        outerCts.CancelAfter(TimeSpan.FromSeconds(65));
+
+        try
+        {
+            return await _client.AskAsync<TestDriverConnectResult>(msg, outerCts.Token);
+        }
+        catch (OperationCanceledException)
+        {
+            return new TestDriverConnectResult(false, "Probe request did not return within 65s.", null, correlationId);
+        }
+        catch (Exception ex)
+        {
+            return new TestDriverConnectResult(false, $"Probe dispatch failed: {ex.Message}", null, correlationId);
+        }
+    }
+}
diff --git a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Clients/ServiceCollectionExtensions.cs b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Clients/ServiceCollectionExtensions.cs
index 77dc5168..c0d947a2 100644
--- a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Clients/ServiceCollectionExtensions.cs
+++ b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Clients/ServiceCollectionExtensions.cs
@@ -14,6 +14,7 @@ public static class ServiceCollectionExtensions
     {
         services.AddScoped<IAdminOperationsClient, AdminOperationsClient>();
         services.AddScoped<IFleetDiagnosticsClient, FleetDiagnosticsClient>();
+        services.AddScoped<AdminProbeService>();
         return services;
     }
 }
diff --git a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/AbCipDriverPage.razor b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/AbCipDriverPage.razor
index 4f92011b..d7bd17e5 100644
--- a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/AbCipDriverPage.razor
+++ b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/AbCipDriverPage.razor
@@ -3,6 +3,7 @@
 @rendermode RenderMode.InteractiveServer
 @using Microsoft.AspNetCore.Components.Forms
 @using Microsoft.EntityFrameworkCore
+@using ZB.MOM.WW.OtOpcUa.AdminUI.Clients
 @using ZB.MOM.WW.OtOpcUa.AdminUI.Components.Shared.Drivers
 @using ZB.MOM.WW.OtOpcUa.Configuration
 @using ZB.MOM.WW.OtOpcUa.Configuration.Entities
@@ -41,6 +42,12 @@ else
                 <DriverStatusPanel DriverInstanceId="@DriverInstanceId" Enabled="@_identityModel.Enabled" />
             }
 
+            <div class="mt-2 mb-3">
+                <DriverTestConnectButton DriverType="@DriverTypeKey"
+                                         GetConfigJson="@SerializeCurrentConfig"
+                                         TimeoutSeconds="@_form.AdminProbeTimeoutSeconds" />
+            </div>
+
             @* Operation timeout *@
             <section class="panel rise mt-3" style="animation-delay:.06s">
                 <div class="panel-head">Operation settings</div>
@@ -304,6 +311,9 @@ else
         finally { _busy = false; }
     }
 
+    private string SerializeCurrentConfig()
+        => System.Text.Json.JsonSerializer.Serialize(_form.ToOptions(_devices, _tags), _jsonOpts);
+
     private static AbCipDriverOptions? TryDeserialize(string json)
     {
         try { return System.Text.Json.JsonSerializer.Deserialize<AbCipDriverOptions>(json, _jsonOpts); }
diff --git a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/AbLegacyDriverPage.razor b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/AbLegacyDriverPage.razor
index 3763380b..99aa96e6 100644
--- a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/AbLegacyDriverPage.razor
+++ b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/AbLegacyDriverPage.razor
@@ -3,6 +3,7 @@
 @rendermode RenderMode.InteractiveServer
 @using Microsoft.AspNetCore.Components.Forms
 @using Microsoft.EntityFrameworkCore
+@using ZB.MOM.WW.OtOpcUa.AdminUI.Clients
 @using ZB.MOM.WW.OtOpcUa.AdminUI.Components.Shared.Drivers
 @using ZB.MOM.WW.OtOpcUa.Configuration
 @using ZB.MOM.WW.OtOpcUa.Configuration.Entities
@@ -42,6 +43,12 @@ else
                 <DriverStatusPanel DriverInstanceId="@DriverInstanceId" Enabled="@_identityModel.Enabled" />
             }
 
+            <div class="mt-2 mb-3">
+                <DriverTestConnectButton DriverType="@DriverTypeKey"
+                                         GetConfigJson="@SerializeCurrentConfig"
+                                         TimeoutSeconds="@_form.AdminProbeTimeoutSeconds" />
+            </div>
+
             @* Operation settings *@
             <section class="panel rise mt-3" style="animation-delay:.06s">
                 <div class="panel-head">Operation settings</div>
@@ -273,6 +280,9 @@ else
         finally { _busy = false; }
     }
 
+    private string SerializeCurrentConfig()
+        => System.Text.Json.JsonSerializer.Serialize(_form.ToOptions(_devices, _tags), _jsonOpts);
+
     private static AbLegacyDriverOptions? TryDeserialize(string json)
     {
         try { return System.Text.Json.JsonSerializer.Deserialize<AbLegacyDriverOptions>(json, _jsonOpts); }
diff --git a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/FocasDriverPage.razor b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/FocasDriverPage.razor
index d6a5a0af..3a4e11f8 100644
--- a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/FocasDriverPage.razor
+++ b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/FocasDriverPage.razor
@@ -3,6 +3,7 @@
 @rendermode RenderMode.InteractiveServer
 @using Microsoft.AspNetCore.Components.Forms
 @using Microsoft.EntityFrameworkCore
+@using ZB.MOM.WW.OtOpcUa.AdminUI.Clients
 @using ZB.MOM.WW.OtOpcUa.AdminUI.Components.Shared.Drivers
 @using ZB.MOM.WW.OtOpcUa.Configuration
 @using ZB.MOM.WW.OtOpcUa.Configuration.Entities
@@ -41,6 +42,12 @@ else
                 <DriverStatusPanel DriverInstanceId="@DriverInstanceId" Enabled="@_identityModel.Enabled" />
             }
 
+            <div class="mt-2 mb-3">
+                <DriverTestConnectButton DriverType="@DriverTypeKey"
+                                         GetConfigJson="@SerializeCurrentConfig"
+                                         TimeoutSeconds="@_form.AdminProbeTimeoutSeconds" />
+            </div>
+
             @* Connection *@
             <section class="panel rise mt-3" style="animation-delay:.05s">
                 <div class="panel-head">Connection</div>
@@ -344,6 +351,9 @@ else
         finally { _busy = false; }
     }
 
+    private string SerializeCurrentConfig()
+        => System.Text.Json.JsonSerializer.Serialize(_form.ToOptions(), _jsonOpts);
+
     private static FocasDriverOptions? TryDeserialize(string json)
     {
         try { return System.Text.Json.JsonSerializer.Deserialize<FocasDriverOptions>(json, _jsonOpts); }
diff --git a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/GalaxyDriverPage.razor b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/GalaxyDriverPage.razor
index 2014072f..dd3dc70b 100644
--- a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/GalaxyDriverPage.razor
+++ b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/GalaxyDriverPage.razor
@@ -3,6 +3,7 @@
 @rendermode RenderMode.InteractiveServer
 @using Microsoft.AspNetCore.Components.Forms
 @using Microsoft.EntityFrameworkCore
+@using ZB.MOM.WW.OtOpcUa.AdminUI.Clients
 @using ZB.MOM.WW.OtOpcUa.AdminUI.Components.Shared.Drivers
 @using ZB.MOM.WW.OtOpcUa.Configuration
 @using ZB.MOM.WW.OtOpcUa.Configuration.Entities
@@ -41,6 +42,12 @@ else
                 <DriverStatusPanel DriverInstanceId="@DriverInstanceId" Enabled="@_identityModel.Enabled" />
             }
 
+            <div class="mt-2 mb-3">
+                <DriverTestConnectButton DriverType="@DriverTypeKey"
+                                         GetConfigJson="@SerializeCurrentConfig"
+                                         TimeoutSeconds="@_form.Galaxy.ProbeTimeoutSeconds" />
+            </div>
+
             @* mxaccessgw connection *@
             <section class="panel rise mt-3" style="animation-delay:.06s">
                 <div class="panel-head">mxaccessgw connection</div>
@@ -331,6 +338,9 @@ else
         finally { _busy = false; }
     }
 
+    private string SerializeCurrentConfig()
+        => System.Text.Json.JsonSerializer.Serialize(_form.Galaxy.ToRecord(), _jsonOpts);
+
     private static GalaxyDriverOptions? TryDeserialize(string json)
     {
         try { return System.Text.Json.JsonSerializer.Deserialize<GalaxyDriverOptions>(json, _jsonOpts); }
diff --git a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/HistorianWonderwareDriverPage.razor b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/HistorianWonderwareDriverPage.razor
index 12b3cc13..a2dad941 100644
--- a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/HistorianWonderwareDriverPage.razor
+++ b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/HistorianWonderwareDriverPage.razor
@@ -3,6 +3,7 @@
 @rendermode RenderMode.InteractiveServer
 @using Microsoft.AspNetCore.Components.Forms
 @using Microsoft.EntityFrameworkCore
+@using ZB.MOM.WW.OtOpcUa.AdminUI.Clients
 @using ZB.MOM.WW.OtOpcUa.AdminUI.Components.Shared.Drivers
 @using ZB.MOM.WW.OtOpcUa.Configuration
 @using ZB.MOM.WW.OtOpcUa.Configuration.Entities
@@ -41,6 +42,12 @@ else
                 <DriverStatusPanel DriverInstanceId="@DriverInstanceId" Enabled="@_identityModel.Enabled" />
             }
 
+            <div class="mt-2 mb-3">
+                <DriverTestConnectButton DriverType="@DriverTypeKey"
+                                         GetConfigJson="@SerializeCurrentConfig"
+                                         TimeoutSeconds="@_form.Historian.ProbeTimeoutSeconds" />
+            </div>
+
             @* Connection *@
             <section class="panel rise mt-3" style="animation-delay:.06s">
                 <div class="panel-head">Connection</div>
@@ -260,6 +267,9 @@ else
         finally { _busy = false; }
     }
 
+    private string SerializeCurrentConfig()
+        => System.Text.Json.JsonSerializer.Serialize(_form.Historian.ToRecord(), _jsonOpts);
+
     private static WonderwareHistorianClientOptions? TryDeserialize(string json)
     {
         try { return System.Text.Json.JsonSerializer.Deserialize<WonderwareHistorianClientOptions>(json, _jsonOpts); }
diff --git a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/ModbusDriverPage.razor b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/ModbusDriverPage.razor
index 48541af7..6ba38b3a 100644
--- a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/ModbusDriverPage.razor
+++ b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/ModbusDriverPage.razor
@@ -3,6 +3,7 @@
 @rendermode RenderMode.InteractiveServer
 @using Microsoft.AspNetCore.Components.Forms
 @using Microsoft.EntityFrameworkCore
+@using ZB.MOM.WW.OtOpcUa.AdminUI.Clients
 @using ZB.MOM.WW.OtOpcUa.AdminUI.Components.Shared.Drivers
 @using ZB.MOM.WW.OtOpcUa.Configuration
 @using ZB.MOM.WW.OtOpcUa.Configuration.Entities
@@ -41,6 +42,12 @@ else
                 <DriverStatusPanel DriverInstanceId="@DriverInstanceId" Enabled="@_identityModel.Enabled" />
             }
 
+            <div class="mt-2 mb-3">
+                <DriverTestConnectButton DriverType="@DriverTypeKey"
+                                         GetConfigJson="@SerializeCurrentConfig"
+                                         TimeoutSeconds="@_form.AdminProbeTimeoutSeconds" />
+            </div>
+
             @* Transport *@
             <section class="panel rise mt-3" style="animation-delay:.06s">
                 <div class="panel-head">Transport</div>
@@ -415,6 +422,9 @@ else
         finally { _busy = false; }
     }
 
+    private string SerializeCurrentConfig()
+        => System.Text.Json.JsonSerializer.Serialize(_form.ToOptions(_tags), _jsonOpts);
+
     private static ModbusDriverOptions? TryDeserialize(string json)
     {
         try { return System.Text.Json.JsonSerializer.Deserialize<ModbusDriverOptions>(json, _jsonOpts); }
diff --git a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/OpcUaClientDriverPage.razor b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/OpcUaClientDriverPage.razor
index 8479d06c..4d516334 100644
--- a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/OpcUaClientDriverPage.razor
+++ b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/OpcUaClientDriverPage.razor
@@ -3,6 +3,7 @@
 @rendermode RenderMode.InteractiveServer
 @using Microsoft.AspNetCore.Components.Forms
 @using Microsoft.EntityFrameworkCore
+@using ZB.MOM.WW.OtOpcUa.AdminUI.Clients
 @using ZB.MOM.WW.OtOpcUa.AdminUI.Components.Shared.Drivers
 @using ZB.MOM.WW.OtOpcUa.Configuration
 @using ZB.MOM.WW.OtOpcUa.Configuration.Entities
@@ -41,6 +42,12 @@ else
                 <DriverStatusPanel DriverInstanceId="@DriverInstanceId" Enabled="@_identityModel.Enabled" />
             }
 
+            <div class="mt-2 mb-3">
+                <DriverTestConnectButton DriverType="@DriverTypeKey"
+                                         GetConfigJson="@SerializeCurrentConfig"
+                                         TimeoutSeconds="@_form.OpcUa.ProbeTimeoutSeconds" />
+            </div>
+
             @* Endpoint *@
             <section class="panel rise mt-3" style="animation-delay:.06s">
                 <div class="panel-head">Endpoint</div>
@@ -379,6 +386,9 @@ else
         finally { _busy = false; }
     }
 
+    private string SerializeCurrentConfig()
+        => System.Text.Json.JsonSerializer.Serialize(_form.OpcUa.ToRecord(), _jsonOpts);
+
     private static OpcUaClientDriverOptions? TryDeserialize(string json)
     {
         try { return System.Text.Json.JsonSerializer.Deserialize<OpcUaClientDriverOptions>(json, _jsonOpts); }
diff --git a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/S7DriverPage.razor b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/S7DriverPage.razor
index 67304ea4..58867fd0 100644
--- a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/S7DriverPage.razor
+++ b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/S7DriverPage.razor
@@ -3,6 +3,7 @@
 @rendermode RenderMode.InteractiveServer
 @using Microsoft.AspNetCore.Components.Forms
 @using Microsoft.EntityFrameworkCore
+@using ZB.MOM.WW.OtOpcUa.AdminUI.Clients
 @using ZB.MOM.WW.OtOpcUa.AdminUI.Components.Shared.Drivers
 @using ZB.MOM.WW.OtOpcUa.Configuration
 @using ZB.MOM.WW.OtOpcUa.Configuration.Entities
@@ -41,6 +42,12 @@ else
                 <DriverStatusPanel DriverInstanceId="@DriverInstanceId" Enabled="@_identityModel.Enabled" />
             }
 
+            <div class="mt-2 mb-3">
+                <DriverTestConnectButton DriverType="@DriverTypeKey"
+                                         GetConfigJson="@SerializeCurrentConfig"
+                                         TimeoutSeconds="@_form.AdminProbeTimeoutSeconds" />
+            </div>
+
             @* Connection *@
             <section class="panel rise mt-3" style="animation-delay:.05s">
                 <div class="panel-head">Connection</div>
@@ -280,6 +287,9 @@ else
         finally { _busy = false; }
     }
 
+    private string SerializeCurrentConfig()
+        => System.Text.Json.JsonSerializer.Serialize(_form.ToOptions(), _jsonOpts);
+
     private static S7DriverOptions? TryDeserialize(string json)
     {
         try { return System.Text.Json.JsonSerializer.Deserialize<S7DriverOptions>(json, _jsonOpts); }
diff --git a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/TwinCATDriverPage.razor b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/TwinCATDriverPage.razor
index 1f5db0da..3fe62517 100644
--- a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/TwinCATDriverPage.razor
+++ b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/TwinCATDriverPage.razor
@@ -3,6 +3,7 @@
 @rendermode RenderMode.InteractiveServer
 @using Microsoft.AspNetCore.Components.Forms
 @using Microsoft.EntityFrameworkCore
+@using ZB.MOM.WW.OtOpcUa.AdminUI.Clients
 @using ZB.MOM.WW.OtOpcUa.AdminUI.Components.Shared.Drivers
 @using ZB.MOM.WW.OtOpcUa.Configuration
 @using ZB.MOM.WW.OtOpcUa.Configuration.Entities
@@ -41,6 +42,12 @@ else
                 <DriverStatusPanel DriverInstanceId="@DriverInstanceId" Enabled="@_identityModel.Enabled" />
             }
 
+            <div class="mt-2 mb-3">
+                <DriverTestConnectButton DriverType="@DriverTypeKey"
+                                         GetConfigJson="@SerializeCurrentConfig"
+                                         TimeoutSeconds="@_form.AdminProbeTimeoutSeconds" />
+            </div>
+
             @* Options *@
             <section class="panel rise mt-3" style="animation-delay:.05s">
                 <div class="panel-head">Options</div>
@@ -286,6 +293,9 @@ else
         finally { _busy = false; }
     }
 
+    private string SerializeCurrentConfig()
+        => System.Text.Json.JsonSerializer.Serialize(_form.ToOptions(), _jsonOpts);
+
     private static TwinCATDriverOptions? TryDeserialize(string json)
     {
         try { return System.Text.Json.JsonSerializer.Deserialize<TwinCATDriverOptions>(json, _jsonOpts); }
diff --git a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Shared/Drivers/DriverTestConnectButton.razor b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Shared/Drivers/DriverTestConnectButton.razor
new file mode 100644
index 00000000..1219b527
--- /dev/null
+++ b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Shared/Drivers/DriverTestConnectButton.razor
@@ -0,0 +1,82 @@
+@using ZB.MOM.WW.OtOpcUa.AdminUI.Clients
+@using ZB.MOM.WW.OtOpcUa.Commons.Messages.Admin
+@inject AdminProbeService Probe
+@implements IDisposable
+
+<div class="d-inline-flex align-items-center gap-2">
+    <button type="button" class="btn btn-outline-primary btn-sm" disabled="@_busy" @onclick="OnClickAsync">
+        @if (_busy) { <span class="spinner-border spinner-border-sm me-1"></span> }
+        Test Connect
+    </button>
+
+    @if (_result is not null)
+    {
+        @if (_result.Ok)
+        {
+            <span class="chip chip-ok" title="@($"Probe succeeded in {_result.LatencyMs:F0} ms")">
+                OK &middot; @_result.LatencyMs?.ToString("F0") ms
+            </span>
+        }
+        else
+        {
+            <span class="chip chip-bad" title="@_result.Message">
+                Failed &middot; @TruncatedMessage()
+            </span>
+        }
+    }
+</div>
+
+@code {
+    /// <summary>Driver type key — must match an installed <c>IDriverProbe.DriverType</c>.</summary>
+    [Parameter, EditorRequired] public string DriverType { get; set; } = "";
+
+    /// <summary>Callback that returns the current form config as JSON. Called at click time.</summary>
+    [Parameter, EditorRequired] public Func<string> GetConfigJson { get; set; } = () => "{}";
+
+    /// <summary>Per-probe timeout forwarded to the actor (actor clamps to [1, 60] s). Default 10 s.</summary>
+    [Parameter] public int TimeoutSeconds { get; set; } = 10;
+
+    private bool _busy;
+    private TestDriverConnectResult? _result;
+    private System.Timers.Timer? _clearTimer;
+
+    private async Task OnClickAsync()
+    {
+        _busy = true;
+        _result = null;
+        StateHasChanged();
+        try
+        {
+            var json = GetConfigJson() ?? "{}";
+            _result = await Probe.TestAsync(DriverType, json, TimeoutSeconds);
+        }
+        catch (Exception ex)
+        {
+            _result = new TestDriverConnectResult(false, ex.Message, null, Guid.Empty);
+        }
+        finally
+        {
+            _busy = false;
+            ScheduleClear();
+            StateHasChanged();
+        }
+    }
+
+    private void ScheduleClear()
+    {
+        _clearTimer?.Dispose();
+        _clearTimer = new System.Timers.Timer(30_000) { AutoReset = false };
+        _clearTimer.Elapsed += async (_, _) =>
+        {
+            _result = null;
+            await InvokeAsync(StateHasChanged);
+        };
+        _clearTimer.Start();
+    }
+
+    private string TruncatedMessage()
+        => _result?.Message is null ? "" :
+            (_result.Message.Length > 60 ? _result.Message[..60] + "…" : _result.Message);
+
+    public void Dispose() => _clearTimer?.Dispose();
+}