[RequestHandler] added the Request Handler component

src/Symfony/Components/RequestHandler/Exception/ForbiddenHttpException.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Symfony\Components\RequestHandler\Exception;
+
+class ForbiddenHttpException extends HttpException
+{
+  public function __construct($message = '')
+  {
+    if (!$message)
+    {
+      $message = 'Forbidden';
+    }
+
+    parent::__construct($message, 403);
+  }
+}

src/Symfony/Components/RequestHandler/Exception/HttpException.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace Symfony\Components\RequestHandler\Exception;
+
+// by convention, exception code == response status code
+class HttpException extends \Exception
+{
+}

src/Symfony/Components/RequestHandler/Exception/NotFoundHttpException.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Symfony\Components\RequestHandler\Exception;
+
+class NotFoundHttpException extends HttpException
+{
+  public function __construct($message = '')
+  {
+    if (!$message)
+    {
+      $message = 'Not Found';
+    }
+
+    parent::__construct($message, 404);
+  }
+}

src/Symfony/Components/RequestHandler/Exception/UnauthorizedHttpException.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Symfony\Components\RequestHandler\Exception;
+
+class UnauthorizedHttpException extends HttpException
+{
+  public function __construct($message = '')
+  {
+    if (!$message)
+    {
+      $message = 'Unauthorized';
+    }
+
+    parent::__construct($message, 401);
+  }
+}