Use site_url for RedirectResponse. Fixes #2119

system/HTTP/RedirectResponse.php

@@ -92,7 +92,7 @@ public function route(string $route, array $params = [], int $code = 302, string
 			throw HTTPException::forInvalidRedirectRoute($route);
 		}
 
-		return $this->redirect(base_url($route), $method, $code);
+		return $this->redirect(site_url($route), $method, $code);
 	}
 
 	/**

system/HTTP/Response.php

@@ -537,9 +537,9 @@ public function getXML()
 	 * @throws \InvalidArgumentException If the body property is not string or array.
 	 */
 	protected function formatBody($body, string $format)
-	{    
+	{
 		$this->bodyFormat = ($format === 'json-unencoded' ? 'json' : $format);
-		$mime = "application/{$this->bodyFormat}";
+		$mime             = "application/{$this->bodyFormat}";
 		$this->setContentType($mime);
 
 		// Nothing much to do for a string...

tests/system/HTTP/RedirectResponseTest.php

@@ -3,6 +3,7 @@
 namespace CodeIgniter\HTTP;
 
 use Config\App;
+use CodeIgniter\Config\Config;
 use CodeIgniter\Config\Services;
 use CodeIgniter\Validation\Validation;
 use CodeIgniter\Router\RouteCollection;
@@ -57,14 +58,14 @@ public function testRedirectRoute()
 		$response->route('exampleRoute');
 
 		$this->assertTrue($response->hasHeader('Location'));
-		$this->assertEquals('http://example.com/exampleRoute', $response->getHeaderLine('Location'));
+		$this->assertEquals('http://example.com/index.php/exampleRoute', $response->getHeaderLine('Location'));
 
 		$this->routes->add('exampleRoute', 'Home::index', ['as' => 'home']);
 
 		$response->route('home');
 
 		$this->assertTrue($response->hasHeader('Location'));
-		$this->assertEquals('http://example.com/exampleRoute', $response->getHeaderLine('Location'));
+		$this->assertEquals('http://example.com/index.php/exampleRoute', $response->getHeaderLine('Location'));
 	}
 
 	public function testRedirectRouteBad()
@@ -186,4 +187,27 @@ public function testRedirectBackMissing()
 		$this->assertSame($response, $returned);
 	}
 
+	/**
+	 * @see https://github.com/codeigniter4/CodeIgniter4/issues/2119
+	 */
+	public function testRedirectRouteBaseUrl()
+	{
+		$config          = new App();
+		$config->baseURL = 'http://example.com/test/';
+		Config::injectMock('App', $config);
+
+		$request = new MockIncomingRequest($config, new URI('http://example.com/test/'), null, new UserAgent());
+		Services::injectMock('request', $request);
+
+		$response = new RedirectResponse(new App());
+
+		$this->routes->add('exampleRoute', 'Home::index');
+
+		$response->route('exampleRoute');
+
+		$this->assertTrue($response->hasHeader('Location'));
+		$this->assertEquals('http://example.com/test/index.php/exampleRoute', $response->getHeaderLine('Location'));
+
+		Config::reset();
+	}
 }

tests/system/HTTP/ResponseTest.php

@@ -6,6 +6,7 @@
 use Config\Format;
 use DateTime;
 use DateTimeZone;
+use CodeIgniter\Config\Config;
 use Tests\Support\HTTP\MockResponse;
 
 class ResponseTest extends \CIUnitTestCase
@@ -158,28 +159,33 @@ public function testSetDateRemembersDateInUTC()
 
 	public function testSetLink()
 	{
-		$response = new Response(new App());
+		// Ensure our URL is not getting overridden
+		$config          = new App();
+		$config->baseURL = 'http://example.com/test';
+		Config::injectMock('App', $config);
+
+		$response = new Response($config);
 		$pager    = \Config\Services::pager();
 
 		$pager->store('default', 3, 10, 200);
 		$response->setLink($pager);
 
 		$this->assertEquals(
-				'<http://example.com?page=1>; rel="first",<http://example.com?page=2>; rel="prev",<http://example.com?page=4>; rel="next",<http://example.com?page=20>; rel="last"', $response->getHeader('Link')->getValue()
+				'<http://example.com/test/?page=1>; rel="first",<http://example.com/test/?page=2>; rel="prev",<http://example.com/test/?page=4>; rel="next",<http://example.com/test/?page=20>; rel="last"', $response->getHeader('Link')->getValue()
 		);
 
 		$pager->store('default', 1, 10, 200);
 		$response->setLink($pager);
 
 		$this->assertEquals(
-				'<http://example.com?page=2>; rel="next",<http://example.com?page=20>; rel="last"', $response->getHeader('Link')->getValue()
+				'<http://example.com/test/?page=2>; rel="next",<http://example.com/test/?page=20>; rel="last"', $response->getHeader('Link')->getValue()
 		);
 
 		$pager->store('default', 20, 10, 200);
 		$response->setLink($pager);
 
 		$this->assertEquals(
-				'<http://example.com?page=1>; rel="first",<http://example.com?page=19>; rel="prev"', $response->getHeader('Link')->getValue()
+				'<http://example.com/test/?page=1>; rel="first",<http://example.com/test/?page=19>; rel="prev"', $response->getHeader('Link')->getValue()
 		);
 	}