Fix runtime review findings

src/MxGateway.Server/Configuration/EffectiveProtocolConfiguration.cs

@@ -1,3 +1,5 @@
 namespace MxGateway.Server.Configuration;
 
-public sealed record EffectiveProtocolConfiguration(uint WorkerProtocolVersion);
+public sealed record EffectiveProtocolConfiguration(
+    uint WorkerProtocolVersion,
+    int MaxGrpcMessageBytes);

src/MxGateway.Server/Configuration/EffectiveSessionConfiguration.cs

@@ -3,4 +3,7 @@ namespace MxGateway.Server.Configuration;
 public sealed record EffectiveSessionConfiguration(
     int DefaultCommandTimeoutSeconds,
     int MaxSessions,
+    int MaxPendingCommandsPerSession,
+    int DefaultLeaseSeconds,
+    int LeaseSweepIntervalSeconds,
     bool AllowMultipleEventSubscribers);

src/MxGateway.Server/Configuration/GatewayConfigurationProvider.cs

@@ -28,6 +28,9 @@ public sealed class GatewayConfigurationProvider(IOptions<GatewayOptions> option
             Sessions: new EffectiveSessionConfiguration(
                 DefaultCommandTimeoutSeconds: value.Sessions.DefaultCommandTimeoutSeconds,
                 MaxSessions: value.Sessions.MaxSessions,
+                MaxPendingCommandsPerSession: value.Sessions.MaxPendingCommandsPerSession,
+                DefaultLeaseSeconds: value.Sessions.DefaultLeaseSeconds,
+                LeaseSweepIntervalSeconds: value.Sessions.LeaseSweepIntervalSeconds,
                 AllowMultipleEventSubscribers: value.Sessions.AllowMultipleEventSubscribers),
             Events: new EffectiveEventConfiguration(
                 QueueCapacity: value.Events.QueueCapacity,
@@ -41,6 +44,8 @@ public sealed class GatewayConfigurationProvider(IOptions<GatewayOptions> option
                 RecentFaultLimit: value.Dashboard.RecentFaultLimit,
                 RecentSessionLimit: value.Dashboard.RecentSessionLimit,
                 ShowTagValues: value.Dashboard.ShowTagValues),
-            Protocol: new EffectiveProtocolConfiguration(value.Protocol.WorkerProtocolVersion));
+            Protocol: new EffectiveProtocolConfiguration(
+                value.Protocol.WorkerProtocolVersion,
+                value.Protocol.MaxGrpcMessageBytes));
     }
 }

src/MxGateway.Server/Configuration/GatewayOptionsValidator.cs

@@ -129,6 +129,14 @@ public sealed class GatewayOptionsValidator : IValidateOptions<GatewayOptions>
             options.MaxPendingCommandsPerSession,
             "MxGateway:Sessions:MaxPendingCommandsPerSession must be greater than zero.",
             failures);
+        AddIfNotPositive(
+            options.DefaultLeaseSeconds,
+            "MxGateway:Sessions:DefaultLeaseSeconds must be greater than zero.",
+            failures);
+        AddIfNotPositive(
+            options.LeaseSweepIntervalSeconds,
+            "MxGateway:Sessions:LeaseSweepIntervalSeconds must be greater than zero.",
+            failures);
 
         if (options.AllowMultipleEventSubscribers)
         {
@@ -179,6 +187,12 @@ public sealed class GatewayOptionsValidator : IValidateOptions<GatewayOptions>
             failures.Add(
                 $"MxGateway:Protocol:WorkerProtocolVersion must be {GatewayContractInfo.WorkerProtocolVersion}.");
         }
+
+        if (options.MaxGrpcMessageBytes is < MinimumMaxMessageBytes or > MaximumMaxMessageBytes)
+        {
+            failures.Add(
+                $"MxGateway:Protocol:MaxGrpcMessageBytes must be between {MinimumMaxMessageBytes} and {MaximumMaxMessageBytes}.");
+        }
     }
 
     private static void AddIfBlank(string? value, string message, List<string> failures)

src/MxGateway.Server/Configuration/ProtocolOptions.cs

@@ -5,4 +5,6 @@ namespace MxGateway.Server.Configuration;
 public sealed class ProtocolOptions
 {
     public uint WorkerProtocolVersion { get; init; } = GatewayContractInfo.WorkerProtocolVersion;
+
+    public int MaxGrpcMessageBytes { get; init; } = 16 * 1024 * 1024;
 }

src/MxGateway.Server/Configuration/SessionOptions.cs

@@ -8,5 +8,9 @@ public sealed class SessionOptions
 
     public int MaxPendingCommandsPerSession { get; init; } = 128;
 
+    public int DefaultLeaseSeconds { get; init; } = 1800;
+
+    public int LeaseSweepIntervalSeconds { get; init; } = 30;
+
     public bool AllowMultipleEventSubscribers { get; init; }
 }