Wire up UserAgent from config to HTTP requests

.github/workflows/buildtest.yaml

@@ -47,7 +47,7 @@ jobs:
       - name: Setup dotnet SDK
         uses: actions/setup-dotnet@v5
         with:
-          dotnet-version: '10.0.x'
+          dotnet-version: '10.0.1xx'
       - name: Restore nugets (msbuild)
         run: msbuild .\src\KubernetesClient\ -t:restore -p:RestorePackagesConfig=true
       - name: Build (msbuild)

src/KubernetesClient/Kubernetes.ConfigInit.cs

@@ -168,6 +168,11 @@
             {
                 Timeout = Timeout.InfiniteTimeSpan,
             };
+
+            if (!string.IsNullOrWhiteSpace(config.UserAgent))
+            {
+                HttpClient.DefaultRequestHeaders.TryAddWithoutValidation("User-Agent", config.UserAgent);
+            }
         }
 
         /// <summary>
@@ -220,7 +225,7 @@
 #else
                 throw new NotSupportedException("Custom trust store requires .NET 5.0 or later. Current platform does not support this feature.");
 #endif
                 var isValid = chain.Build((X509Certificate2)certificate);
 
                 var isTrusted = false;
 

src/KubernetesClient/KubernetesClientConfiguration.cs

@@ -65,7 +65,7 @@ public partial class KubernetesClientConfiguration
         ///     Gets or sets the HTTP user agent.
         /// </summary>
         /// <value>Http user agent.</value>
-        public string UserAgent { get; set; }
+        public string UserAgent { get; set; } = $"kubernetes-csharp/{GeneratedApiVersion.AssemblyVersion}";
 
         /// <summary>
         ///     Gets or sets the username (HTTP basic authentication).

tests/KubernetesClient.Tests/AuthTests.cs

@@ -633,5 +633,48 @@ private K8SConfiguration GetK8SConfiguration(string serverUri, string responseJs
                 return kubernetesConfig;
             }
         }
+
+        [Fact]
+        public void DefaultUserAgent()
+        {
+            using (var server = new MockKubeApiServer(testOutput, cxt =>
+            {
+                var header = cxt.Request.Headers["User-Agent"].FirstOrDefault();
+                Assert.NotNull(header);
+                Assert.StartsWith("kubernetes-csharp/", header);
+                return Task.FromResult(true);
+            }))
+            {
+                var client = new Kubernetes(new KubernetesClientConfiguration { Host = server.Uri.ToString() });
+
+                var listTask = ExecuteListPods(client);
+
+                Assert.True(listTask.Response.IsSuccessStatusCode);
+            }
+        }
+
+        [Fact]
+        public void CustomUserAgent()
+        {
+            const string customAgent = "my-app/1.0";
+
+            using (var server = new MockKubeApiServer(testOutput, cxt =>
+            {
+                var header = cxt.Request.Headers["User-Agent"].FirstOrDefault();
+                Assert.Equal(customAgent, header);
+                return Task.FromResult(true);
+            }))
+            {
+                var client = new Kubernetes(new KubernetesClientConfiguration
+                {
+                    Host = server.Uri.ToString(),
+                    UserAgent = customAgent,
+                });
+
+                var listTask = ExecuteListPods(client);
+
+                Assert.True(listTask.Response.IsSuccessStatusCode);
+            }
+        }
     }
 }