--- /dev/null
+<?php
+
+namespace Drupal\trusted_hosts_test\Controller;
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+ * Provides a test controller for testing the trusted hosts setting.
+ */
+class TrustedHostsTestController {
+
+ /**
+ * Creates a fake request and prints out its host.
+ */
+ public function fakeRequestHost() {
+ $request = Request::create('/');
+ return ['#markup' => 'Host: ' . $request->getHost()];
+ }
+
+}