From 4088520d4cb519ecd6c0bbab7c6fa4d7b6ada6a7 Mon Sep 17 00:00:00 2001
From: Georgi Hristov <georgi.dimitrov.hristov@gmail.com>
Date: Mon, 1 Jun 2026 18:46:05 +0300
Subject: [PATCH] feat(compare): enable local compare targets by default in
 Development

---
 .../Configuration/DebugProbeOptionsTests.cs                 | 2 +-
 DebugProbe.AspNetCore/Extensions/DebugProbeExtensions.cs    | 6 ++++++
 .../Internal/Compare/CompareUrlValidator.cs                 | 2 +-
 DebugProbe.AspNetCore/Options/DebugProbeOptions.cs          | 5 +++--
 DebugProbe.SampleApi/Program.cs                             | 1 -
 5 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/DebugProbe.AspNetCore.Tests/Configuration/DebugProbeOptionsTests.cs b/DebugProbe.AspNetCore.Tests/Configuration/DebugProbeOptionsTests.cs
index ff41b40..6ceefea 100644
--- a/DebugProbe.AspNetCore.Tests/Configuration/DebugProbeOptionsTests.cs
+++ b/DebugProbe.AspNetCore.Tests/Configuration/DebugProbeOptionsTests.cs
@@ -14,7 +14,7 @@ public void Defaults_work_correctly()
 
         Assert.Equal(20, options.MaxEntries);
         Assert.Equal(32, options.MaxBodyCaptureSizeKb);
-        Assert.False(options.AllowLocalCompareTargets);
+        Assert.Null(options.AllowLocalCompareTargets);
         Assert.Empty(options.IgnorePaths);
     }
 
diff --git a/DebugProbe.AspNetCore/Extensions/DebugProbeExtensions.cs b/DebugProbe.AspNetCore/Extensions/DebugProbeExtensions.cs
index 16aa774..06c6bb5 100644
--- a/DebugProbe.AspNetCore/Extensions/DebugProbeExtensions.cs
+++ b/DebugProbe.AspNetCore/Extensions/DebugProbeExtensions.cs
@@ -11,6 +11,7 @@
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Http;
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Http;
 
 namespace DebugProbe.AspNetCore.Extensions;
@@ -60,6 +61,11 @@ public static IServiceCollection AddDebugProbe(this IServiceCollection services,
     /// </summary>
     public static IApplicationBuilder UseDebugProbe(this IApplicationBuilder app)
     {
+        var options = app.ApplicationServices.GetRequiredService<DebugProbeOptions>();
+        var environment = app.ApplicationServices.GetRequiredService<IHostEnvironment>();
+
+        options.AllowLocalCompareTargets ??= environment.IsDevelopment();
+
         app.UseMiddleware<DebugProbeMiddleware>();
         app.ApplicationServices.GetRequiredService<DebugEntryStore>();
 
diff --git a/DebugProbe.AspNetCore/Internal/Compare/CompareUrlValidator.cs b/DebugProbe.AspNetCore/Internal/Compare/CompareUrlValidator.cs
index d01b2c4..c091d74 100644
--- a/DebugProbe.AspNetCore/Internal/Compare/CompareUrlValidator.cs
+++ b/DebugProbe.AspNetCore/Internal/Compare/CompareUrlValidator.cs
@@ -34,7 +34,7 @@ internal static class CompareUrlValidator
             return (false, null, "Failed to resolve compare server host");
         }
 
-        if (!options.AllowLocalCompareTargets)
+        if (options.AllowLocalCompareTargets != true)
         {
             if (IsLocalHostName(parsed.Host))
             {
diff --git a/DebugProbe.AspNetCore/Options/DebugProbeOptions.cs b/DebugProbe.AspNetCore/Options/DebugProbeOptions.cs
index 7c32817..7d4e6e0 100644
--- a/DebugProbe.AspNetCore/Options/DebugProbeOptions.cs
+++ b/DebugProbe.AspNetCore/Options/DebugProbeOptions.cs
@@ -18,9 +18,10 @@ public class DebugProbeOptions
     internal int MaxBodyCaptureSizeBytes => MaxBodyCaptureSizeKb * 1024;
 
     /// <summary>
-    /// Allows compare requests to local or private network targets.
+    /// Allows compare operations to target localhost and private network addresses.
+    /// Defaults to true in Development and false in other environments unless explicitly configured.
     /// </summary>
-    public bool AllowLocalCompareTargets { get; set; }
+    public bool? AllowLocalCompareTargets { get; set; }
 
     /// <summary>
     /// Additional request paths to ignore.
diff --git a/DebugProbe.SampleApi/Program.cs b/DebugProbe.SampleApi/Program.cs
index c268c6b..f2fa17e 100644
--- a/DebugProbe.SampleApi/Program.cs
+++ b/DebugProbe.SampleApi/Program.cs
@@ -11,7 +11,6 @@
 builder.Services.AddDebugProbe(options =>
 {
     options.MaxEntries = 10;
-    options.AllowLocalCompareTargets = true;
 });
 
 var app = builder.Build();