dist

Tests/Distribution/NodeFanout/Server/Esiur.Tests.NodeFanout.Server.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

Tests/Distribution/NodeFanout/Server/Program.cs

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+// ============================================================
+// Test 1: Node Fan-Out — SERVER NODE
+// One server hosts N resources. Clients attach and subscribe.
+// The server emits property updates at a fixed rate and measures
+// notification throughput vs. subscriber count.
+// ============================================================
+// Usage: dotnet run -- --resources 100 --interval 50
+// ============================================================
+
+using Esiur.Resource;
+using Esiur.Stores;
+using Esiur.Net.IIP;
+using System.Diagnostics;
+
+var resourceCount = int.Parse(GetArg(args, "--resources", "100"));
+var intervalMs    = int.Parse(GetArg(args, "--interval",  "50"));
+var port          = int.Parse(GetArg(args, "--port",      "10900"));
+
+Console.WriteLine($"[Server] resources={resourceCount}  interval={intervalMs}ms  port={port}");
+
+// --- Warehouse setup -------------------------------------------------
+await Warehouse.Put("sys", new MemoryStore());
+await Warehouse.Put("sys/server", new DistributedServer() { Port = (ushort)port });
+
+// Create and register all sensor resources
+var sensors = new SensorResource[resourceCount];
+for (int i = 0; i < resourceCount; i++)
+{
+    sensors[i] = new SensorResource { SensorId = i };
+    await Warehouse.Put($"sys/sensor_{i}", sensors[i]);
+}
+
+await Warehouse.Open();
+Console.WriteLine($"[Server] Listening on port {port} with {resourceCount} resources.");
+
+// --- Emit loop -------------------------------------------------------
+// Continuously update all resource properties at the given interval.
+// This drives property-change notifications to all attached clients.
+long totalEmitted = 0;
+var sw = Stopwatch.StartNew();
+
+_ = Task.Run(async () =>
+{
+    while (true)
+    {
+        await Task.Delay(intervalMs);
+
+        double value = sw.Elapsed.TotalSeconds;
+        foreach (var s in sensors)
+            s.Value = value;          // triggers PropertyModified → propagate to peers
+
+        totalEmitted += resourceCount;
+    }
+});
+
+// --- Stats reporter --------------------------------------------------
+_ = Task.Run(async () =>
+{
+    long lastEmitted = 0;
+    while (true)
+    {
+        await Task.Delay(5000);
+        long delta = totalEmitted - lastEmitted;
+        lastEmitted = totalEmitted;
+        Console.WriteLine($"[Server] {DateTime.Now:HH:mm:ss}  emitted/5s={delta}  rate={delta/5.0:F0}/s");
+    }
+});
+
+Console.WriteLine("Press ENTER to stop.");
+Console.ReadLine();
+await Warehouse.Close();
+
+
+// --- Helpers ---------------------------------------------------------
+static string GetArg(string[] args, string key, string def)
+{
+    int i = Array.IndexOf(args, key);
+    return (i >= 0 && i + 1 < args.Length) ? args[i + 1] : def;
+}

Tests/Distribution/NodeFanout/Server/SensorResource.cs

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+using Esiur.Resource;
+
+/// <summary>
+/// A simple observable sensor resource.
+/// Property changes are automatically propagated to all attached peers.
+/// </summary>
+[Resource]
+public class SensorResource : Resource
+{
+    public int SensorId { get; set; }
+
+    private double _value;
+
+    [ResourceProperty]
+    public double Value
+    {
+        get => _value;
+        set
+        {
+            _value = value;
+            PropertyModified("Value");  // notifies Esiur runtime to propagate
+        }
+    }
+}