fix: Support for proxy authentication from proxy URL user info

CHANGELOG.md

@@ -9,6 +9,7 @@
 * Fix #5264: Remove deprecated `Config.errorMessages` field
 * Fix #6008: removing the optional dependency on bouncy castle
 * Fix #6230: introduced Quantity.multiply(int) to allow for Quantity multiplication by an integer
+* Fix #6247: Support for proxy authentication from proxy URL user info
 * Fix #6281: use GitHub binary repo for Kube API Tests
 * Fix #6282: Allow annotated types with Pattern, Min, and Max with Lists and Maps and CRD generation
 * Fix #5480: Move `io.fabric8:zjsonpatch` to KubernetesClient project

kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/utils/HttpClientUtils.java

@@ -123,12 +123,15 @@ public static Map<String, io.fabric8.kubernetes.client.http.Interceptor> createA
     return interceptors;
   }
 
-  public static String basicCredentials(String username, String password) {
-    String usernameAndPassword = username + ":" + password;
+  public static String basicCredentials(String usernameAndPassword) {
     String encoded = Base64.getEncoder().encodeToString(usernameAndPassword.getBytes(StandardCharsets.UTF_8));
     return "Basic " + encoded;
   }
 
+  public static String basicCredentials(String username, String password) {
+    return basicCredentials(username + ":" + password);
+  }
+
   /**
    * @deprecated you should not need to call this method directly. Please create your own HttpClient.Factory
    *             should you need to customize your clients.
@@ -229,6 +232,11 @@ static void configureProxy(Config config, HttpClient.Builder builder)
         builder.proxyAuthorization(basicCredentials(config.getProxyUsername(), config.getProxyPassword()));
       }
 
+      String userInfo = proxyUri.getUserInfo();
+      if (userInfo != null) {
+        builder.proxyAuthorization(basicCredentials(userInfo));
+      }
+
       builder.proxyType(toProxyType(proxyUri.getScheme()));
     }
   }

kubernetes-client-api/src/test/java/io/fabric8/kubernetes/client/utils/HttpClientUtilsTest.java

@@ -90,6 +90,18 @@ void testConfigureSocksProxy() throws Exception {
     Mockito.verify(builder).proxyAddress(new InetSocketAddress("192.168.0.1", 8080));
   }
 
+  @Test
+  void testConfigureProxyAuth() throws Exception {
+    Config config = new ConfigBuilder().withMasterUrl("http://localhost").withHttpProxy("http://user:password@192.168.0.1:8080")
+        .build();
+    Builder builder = Mockito.mock(HttpClient.Builder.class, Mockito.RETURNS_SELF);
+
+    HttpClientUtils.configureProxy(config, builder);
+
+    Mockito.verify(builder).proxyType(HttpClient.ProxyType.HTTP);
+    Mockito.verify(builder).proxyAuthorization("Basic dXNlcjpwYXNzd29yZA==");
+  }
+
   @Test
   void testCreateApplicableInterceptors() {
     // Given