add YarpDiagnosticSample.csproj

Author: WeihanLi

YarpSamples/YarpDiagnosticSample/Program.cs

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+using Yarp.ReverseProxy.Transforms;
+using YarpDiagnosticSample;
+
+var builder = WebApplication.CreateSlimBuilder(args);
+builder.Services.AddHttpLogging();
+builder.Services.AddSingleton<YarpLoggingTransform>();
+builder.Services.AddReverseProxy()
+    .LoadFromConfig(builder.Configuration.GetSection("ReverseProxy"))
+    .AddTransforms(transformContext =>
+        transformContext.ResponseTransforms.Add(transformContext.Services.GetRequiredService<YarpLoggingTransform>()));
+    ;
+var app = builder.Build();
+app.UseHttpLogging();
+app.MapReverseProxy();
+app.Run();

YarpSamples/YarpDiagnosticSample/YarpDiagnosticSample.csproj

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+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Yarp.ReverseProxy" Version="2.3.0" />
+  </ItemGroup>
+
+</Project>

YarpSamples/YarpDiagnosticSample/YarpDiagnosticSample.sln.DotSettings

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+<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=yarp/@EntryIndexedValue">True</s:Boolean></wpf:ResourceDictionary>

YarpSamples/YarpDiagnosticSample/YarpDiagnosticSample.slnx

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+<Solution>
+  <Project Path="YarpDiagnosticSample.csproj" />
+</Solution>

YarpSamples/YarpDiagnosticSample/YarpLoggingTransform.cs

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+using Yarp.ReverseProxy.Transforms;
+
+namespace YarpDiagnosticSample;
+
+public class YarpLoggingTransform : ResponseTransform
+{
+    public override ValueTask ApplyAsync(ResponseTransformContext context)
+    {
+        var proxyResponse = context.ProxyResponse;
+        if (proxyResponse is null)
+            return ValueTask.CompletedTask;
+        
+        var proxyRequest = proxyResponse.RequestMessage;
+
+        var logger = context.HttpContext.RequestServices.GetRequiredService<ILogger<YarpLoggingTransform>>();
+        if (proxyRequest is not null)
+        {
+            logger.LogInformation("Proxy request: {Url} {Headers}", 
+                proxyRequest.RequestUri?.AbsoluteUri, string.Join(";",
+                    proxyRequest.Headers.Select(h => 
+                        $"{h.Key}:{string.Join(",", h.Value)}")));
+        }
+        
+        logger.LogInformation("Proxy response: {ResponseStatusCode} {ResponseHeaders}",
+            (int)proxyResponse.StatusCode, string.Join(";", proxyResponse.Headers.Select(x=> $"{x.Key}:{string.Join(",", x.Value)}")));
+        return ValueTask.CompletedTask;
+    }
+}

YarpSamples/YarpDiagnosticSample/appsettings.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning",
+      "Microsoft.AspNetCore.HttpLogging": "Information"
+    }
+  },
+  "ReverseProxy": {
+    "Routes": {
+      "default" : {
+        "ClusterId": "default",
+        "Match": {
+          "Path": "/"
+        }
+      }
+    },
+    "Clusters": {
+      "default": {
+        "Destinations": {
+          "default": {
+            "Address": "https://reservation.weihanli.xyz/api/notice"
+          }
+        }
+      }
+    }
+  }
+}