diff --git a/src/Symfony/Components/RequestHandler/CacheControl.php b/src/Symfony/Components/RequestHandler/CacheControl.php
new file mode 100644
index 0000000000..7b168ef253
--- /dev/null
+++ b/src/Symfony/Components/RequestHandler/CacheControl.php
@@ -0,0 +1,277 @@
+<?php
+
+namespace Symfony\Components\RequestHandler;
+
+/*
+ * This file is part of the Symfony framework.
+ *
+ * (c) Fabien Potencier <fabien.potencier@symfony-project.com>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+/**
+ * CacheControl is a wrapper for the Cache-Control HTTP header.
+ *
+ * This class knows about allowed attributes
+ * (and those that only apply to requests or responses).
+ *
+ * @package    Symfony
+ * @subpackage Components_RequestHandler
+ * @author     Fabien Potencier <fabien.potencier@symfony-project.com>
+ */
+class CacheControl
+{
+  protected $bag;
+  protected $attributes;
+  protected $type;
+
+  /**
+   * Constructor.
+   *
+   * @param Symfony\Components\RequestHandler\HeaderBag $bag    A HeaderBag instance
+   * @param string                                      $header The value of the Cache-Control HTTP header
+   * @param string                                      $type   The type (null, request, or response)
+   */
+  public function __construct(HeaderBag $bag, $header, $type = null)
+  {
+    $this->bag = $bag;
+    $this->attributes = $this->parse($header);
+
+    if (null !== $type && !in_array($type, array('request', 'response')))
+    {
+      throw new \InvalidArgumentException(sprintf('The "%s" type is not supported by the CacheControl constructor.', $type));
+    }
+    $this->type = $type;
+  }
+
+  public function __toString()
+  {
+    $parts = array();
+    ksort($this->attributes);
+    foreach ($this->attributes as $key => $value)
+    {
+      if (true === $value)
+      {
+        $parts[] = $key;
+      }
+      else
+      {
+        if (preg_match('#[^a-zA-Z0-9._-]#', $value))
+        {
+          $value = '"'.$value.'"';
+        }
+
+        $parts[] = "$key=$value";
+      }
+    }
+
+    return implode(',', $parts);
+  }
+
+  public function getMaxStale()
+  {
+    $this->checkAttribute('max-stale', 'request');
+
+    return array_key_exists('max-stale', $this->attributes) ? $this->attributes['max-stale'] : false;
+  }
+
+  public function setMaxStale($value)
+  {
+    $this->checkAttribute('max-stale', 'request');
+
+    $this->setValue('max-stale', $value);
+  }
+
+  public function getMinFresh()
+  {
+    $this->checkAttribute('min-fresh', 'request');
+
+    return array_key_exists('min-fresh', $this->attributes) ? $this->attributes['min-fresh'] : false;
+  }
+
+  public function setMinFresh($value)
+  {
+    $this->checkAttribute('min-fresh', 'request');
+
+    $this->setValue('min-fresh', $value);
+  }
+
+  public function isOnlyIfCached()
+  {
+    $this->checkAttribute('only-if-cached', 'request');
+
+    return array_key_exists('only-if-cached', $this->attributes);
+  }
+
+  public function setOnlyIfCached($value)
+  {
+    $this->checkAttribute('only-if-cached', 'request');
+
+    $this->setValue('only-if-cached', $value, true);
+  }
+
+  public function isPublic()
+  {
+    $this->checkAttribute('public', 'response');
+
+    return array_key_exists('public', $this->attributes);
+  }
+
+  public function setPublic($value)
+  {
+    $this->checkAttribute('public', 'response');
+
+    $this->setValue('public', $value, true);
+  }
+
+  public function isPrivate()
+  {
+    $this->checkAttribute('private', 'response');
+
+    return array_key_exists('private', $this->attributes);
+  }
+
+  public function getPrivate()
+  {
+    $this->checkAttribute('private', 'response');
+
+    return array_key_exists('private', $this->attributes) ? $this->attributes['private'] : false;
+  }
+
+  public function setPrivate($value)
+  {
+    $this->checkAttribute('private', 'response');
+
+    $this->setValue('private', $value, true);
+  }
+
+  public function isNoCache()
+  {
+    return array_key_exists('no-cache', $this->attributes);
+  }
+
+  public function getNoCache()
+  {
+    return array_key_exists('no-cache', $this->attributes) ? $this->attributes['no-cache'] : false;
+  }
+
+  public function setNoCache($value)
+  {
+    $this->setValue('no-cache', $value, true);
+  }
+
+  public function isNoStore()
+  {
+    return array_key_exists('no-store', $this->attributes);
+  }
+
+  public function setNoStore($value)
+  {
+    $this->setValue('no-store', $value, true);
+  }
+
+  public function isNoTransform()
+  {
+    return array_key_exists('no-tranform', $this->attributes);
+  }
+
+  public function setNoTransform($value)
+  {
+    $this->setValue('no-transform', $value, true);
+  }
+
+  public function getMaxAge()
+  {
+    return array_key_exists('max-age', $this->attributes) ? $this->attributes['max-age'] : null;
+  }
+
+  public function setMaxAge($age)
+  {
+    $this->setValue('max-age', (integer) $age);
+  }
+
+  public function getSharedMaxAge()
+  {
+    $this->checkAttribute('s-maxage', 'response');
+
+    return array_key_exists('s-maxage', $this->attributes) ? $this->attributes['s-maxage'] : null;
+  }
+
+  public function setSharedMaxAge($age)
+  {
+    $this->checkAttribute('s-maxage', 'response');
+
+    $this->setValue('s-maxage', (integer) $age);
+  }
+
+  public function mustRevalidate()
+  {
+    $this->checkAttribute('must-revalidate', 'response');
+
+    return array_key_exists('must-revalidate', $this->attributes);
+  }
+
+  public function setMustRevalidate($value)
+  {
+    $this->checkAttribute('must-revalidate', 'response');
+
+    $this->setValue('must-revalidate', $value);
+  }
+
+  public function mustProxyRevalidate()
+  {
+    $this->checkAttribute('proxy-revalidate', 'response');
+
+    return array_key_exists('proxy-revalidate', $this->attributes);
+  }
+
+  public function setProxyRevalidate($value)
+  {
+    $this->checkAttribute('proxy-revalidate', 'response');
+
+    $this->setValue('proxy-revalidate', $value);
+  }
+
+  /**
+   * Parses a Cache-Control HTTP header.
+   *
+   * @param string $header The value of the Cache-Control HTTP header
+   *
+   * @param array An array representing the attribute values
+   */
+  protected function parse($header)
+  {
+    $attributes = array();
+    preg_match_all('#([a-zA-Z][a-zA-Z_-]*)\s*(?:=(?:"([^"]*)"|([^ \t",;]*)))?#', $header, $matches, PREG_SET_ORDER);
+    foreach ($matches as $match)
+    {
+      $attributes[strtolower($match[1])] = isset($match[2]) && $match[2] ? $match[2] : (isset($match[3]) ? $match[3] : true);
+    }
+
+    return $attributes;
+  }
+
+  protected function setValue($key, $value, $isBoolean = false)
+  {
+    if (false === $value)
+    {
+      unset($this->attributes[$key]);
+    }
+    else
+    {
+      $this->attributes[$key] = $isBoolean ? true : $value;
+    }
+
+    $this->bag->set('Cache-Control', (string) $this);
+  }
+
+  protected function checkAttribute($name, $expected)
+  {
+    if (null !== $this->type && $expected !== $this->type)
+    {
+      throw new \LogicException(sprintf("The property %s only applies to the %s Cache-Control.", $name, $expected));
+    }
+  }
+}
diff --git a/src/Symfony/Components/RequestHandler/HeaderBag.php b/src/Symfony/Components/RequestHandler/HeaderBag.php
new file mode 100644
index 0000000000..d22749951c
--- /dev/null
+++ b/src/Symfony/Components/RequestHandler/HeaderBag.php
@@ -0,0 +1,134 @@
+<?php
+
+namespace Symfony\Components\RequestHandler;
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien.potencier@symfony-project.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * HeaderBag is a ParameterBag optimized to hold header HTTP headers.
+ *
+ * @package    Symfony
+ * @subpackage Components_RequestHandler
+ * @author     Fabien Potencier <fabien.potencier@symfony-project.com>
+ */
+class HeaderBag extends ParameterBag
+{
+  protected $cacheControl;
+  protected $type;
+
+  /**
+   * Replaces the current HTTP headers by a new set.
+   *
+   * @param array  $parameters An array of HTTP headers
+   * @param string $type       The type (null, request, or response)
+   */
+  public function replace(array $parameters = array(), $type = null)
+  {
+    $this->cacheControl = null;
+    $this->parameters = array();
+    foreach ($parameters as $key => $value)
+    {
+      $this->parameters[strtr(strtolower($key), '_', '-')] = $value;
+    }
+
+    if (null !== $type && !in_array($type, array('request', 'response')))
+    {
+      throw new \InvalidArgumentException(sprintf('The "%s" type is not supported by the HeaderBag constructor.', $type));
+    }
+    $this->type = $type;
+  }
+
+  /**
+   * Returns a header value by name.
+   *
+   * @param string $key     The key
+   * @param mixed  $default The default value
+   */
+  public function get($key, $default = null)
+  {
+    $key = strtr(strtolower($key), '_', '-');
+
+    return array_key_exists($key, $this->parameters) ? $this->parameters[$key] : $default;
+  }
+
+  /**
+   * Sets a header by name.
+   *
+   * @param string  $key     The key
+   * @param mixed   $value   The value
+   * @param Boolean $replace Whether to replace the actual value of not (true by default)
+   */
+  public function set($key, $value, $replace = true)
+  {
+    $key = strtr(strtolower($key), '_', '-');
+
+    if (false === $replace)
+    {
+      $current = $this->get($key, '');
+      $value = ($current ? $current.', ' : '').$value;
+    }
+
+    $this->parameters[$key] = $value;
+
+    if ('cache-control' == $key)
+    {
+      $this->cacheControl = null;
+    }
+  }
+
+  /**
+   * Returns true if the HTTP header is defined.
+   *
+   * @param string $key The HTTP header
+   *
+   * @return Boolean true if the parameter exists, false otherwise
+   */
+  public function has($key)
+  {
+    return array_key_exists(strtr(strtolower($key), '_', '-'), $this->parameters);
+  }
+
+  /**
+   * Deletes a header.
+   *
+   * @param string $key The HTTP header name
+   */
+  public function delete($key)
+  {
+    unset($this->parameters[strtr(strtolower($key), '_', '-')]);
+  }
+
+  /**
+   * Returns an instance able to manage the Cache-Control header.
+   *
+   * @return Symfony\Components\RequestHandler\Cache\CacheControl A CacheControl instance
+   */
+  public function getCacheControl()
+  {
+    if (null === $this->cacheControl)
+    {
+      $this->cacheControl = new CacheControl($this, $this->get('Cache-Control'), $this->type);
+    }
+
+    return $this->cacheControl;
+  }
+
+  /**
+   * Normalizes a HTTP header name.
+   *
+   * @param  string $key The HTTP header name
+   *
+   * @return string The normalized HTTP header name
+   */
+  static public function normalizeHeaderName($key)
+  {
+    return strtr(strtolower($key), '_', '-');
+  }
+}
diff --git a/src/Symfony/Components/RequestHandler/RequestBag.php b/src/Symfony/Components/RequestHandler/ParameterBag.php
similarity index 62%
rename from src/Symfony/Components/RequestHandler/RequestBag.php
rename to src/Symfony/Components/RequestHandler/ParameterBag.php
index f5f2d55b82..f75da54d91 100644
--- a/src/Symfony/Components/RequestHandler/RequestBag.php
+++ b/src/Symfony/Components/RequestHandler/ParameterBag.php
@@ -12,34 +12,44 @@ namespace Symfony\Components\RequestHandler;
  */
 
 /**
- * RequestBag is a container for key/value pairs.
+ * ParameterBag is a container for key/value pairs.
  *
  * @package    Symfony
  * @subpackage Components_RequestHandler
  * @author     Fabien Potencier <fabien.potencier@symfony-project.com>
  */
-class RequestBag
+class ParameterBag
 {
-  protected $input;
+  protected $parameters;
 
-  public function __construct($input)
+  /**
+   * Constructor.
+   *
+   * @param array $parameters An array of parameters
+   */
+  public function __construct(array $parameters = array())
   {
-    $this->replace($input);
+    $this->replace($parameters);
   }
 
   /**
-   * Returns the input.
+   * Returns the parameters.
    *
-   * @return array An array of input
+   * @return array An array of parameters
    */
   public function all()
   {
-    return $this->input;
+    return $this->parameters;
   }
 
-  public function replace($input)
+  /**
+   * Replaces the current parameters by a new set.
+   *
+   * @param array $parameters An array of parameters
+   */
+  public function replace(array $parameters = array())
   {
-    $this->input = $input;
+    $this->parameters = $parameters;
   }
 
   /**
@@ -50,7 +60,7 @@ class RequestBag
    */
   public function get($key, $default = null)
   {
-    return array_key_exists($key, $this->input) ? $this->input[$key] : $default;
+    return array_key_exists($key, $this->parameters) ? $this->parameters[$key] : $default;
   }
 
   /**
@@ -59,14 +69,21 @@ class RequestBag
    * @param string $key   The key
    * @param mixed  $value The value
    */
-  public function set($key, $value)
+  public function set($key, $value, $replace = true)
   {
-    $this->input[$key] = $value;
+    $this->parameters[$key] = $value;
   }
 
+  /**
+   * Returns true if the parameter is defined.
+   *
+   * @param string $key The key
+   *
+   * @return Boolean true if the parameter exists, false otherwise
+   */
   public function has($key)
   {
-    return array_key_exists($key, $this->input);
+    return array_key_exists($key, $this->parameters);
   }
 
   /**
@@ -76,7 +93,7 @@ class RequestBag
    */
   public function delete($key)
   {
-    unset($this->input[$key]);
+    unset($this->parameters[$key]);
   }
 
   /**
@@ -130,4 +147,19 @@ class RequestBag
   {
     return (int) $this->get($key, $default);
   }
+
+  public function getDate($key, \DateTime $default = null)
+  {
+    if (null === $value = $this->get($key))
+    {
+      return $default;
+    }
+
+    if (false === $date = \DateTime::createFromFormat(DATE_RFC2822, $value))
+    {
+      throw new \RuntimeException(sprintf('The %s HTTP header is not parseable (%s).', $key, $value));
+    }
+
+    return $date;
+  }
 }
diff --git a/src/Symfony/Components/RequestHandler/Request.php b/src/Symfony/Components/RequestHandler/Request.php
index b367234127..164372806b 100644
--- a/src/Symfony/Components/RequestHandler/Request.php
+++ b/src/Symfony/Components/RequestHandler/Request.php
@@ -12,12 +12,7 @@ namespace Symfony\Components\RequestHandler;
  */
 
 /**
- * Request is the base implementation of a user request.
- *
- * After initialization, the request is read-only. The only writable
- * values are the query ones (mostly by the router).
- *
- * You can reinitialize the request by calling the initialize() method.
+ * Request represents an HTTP request.
  *
  * @package    Symfony
  * @subpackage Components_RequestHandler
@@ -75,13 +70,13 @@ class Request
    */
   public function initialize(array $query = null, array $request = null, array $path = null, array $cookies = null, array $files = null, array $server = null)
   {
-    $this->request = new RequestBag(null !== $request ? $request : $_POST);
-    $this->query = new RequestBag(null !== $query ? $query : $_GET);
-    $this->path = new RequestBag(null !== $path ? $path : array());
-    $this->cookies = new RequestBag(null !== $cookies ? $cookies : $_COOKIE);
-    $this->files = new RequestBag($this->convertFileInformation(null !== $files ? $files : $_FILES));
-    $this->server = new RequestBag(null !== $server ? $server : $_SERVER);
-    $this->headers = new RequestBag($this->initializeHeaders());
+    $this->request = new ParameterBag(null !== $request ? $request : $_POST);
+    $this->query = new ParameterBag(null !== $query ? $query : $_GET);
+    $this->path = new ParameterBag(null !== $path ? $path : array());
+    $this->cookies = new ParameterBag(null !== $cookies ? $cookies : $_COOKIE);
+    $this->files = new ParameterBag($this->convertFileInformation(null !== $files ? $files : $_FILES));
+    $this->server = new HeaderBag(null !== $server ? $server : $_SERVER, 'request');
+    $this->headers = new HeaderBag($this->initializeHeaders(), 'request');
 
     $this->languages = null;
     $this->charsets = null;
@@ -107,12 +102,26 @@ class Request
    *
    * @return Request A Request instance
    */
-  static public function createFromUri($uri, $method = 'get', $parameters = array(), $cookies = array(), $files = array(), $server = array())
+  static public function create($uri, $method = 'get', $parameters = array(), $cookies = array(), $files = array(), $server = array())
   {
-    if (in_array($method, array('post', 'put', 'delete')))
+    $defaults = array(
+      'SERVER_NAME'          => 'localhost',
+      'SERVER_PORT'          => 80,
+      'HTTP_HOST'            => 'localhost',
+      'HTTP_USER_AGENT'      => 'Symfony/X.X',
+      'HTTP_ACCEPT'          => 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
+      'HTTP_ACCEPT_LANGUAGE' => 'en-us,en;q=0.5',
+      'HTTP_ACCEPT_CHARSET'  => 'ISO-8859-1,utf-8;q=0.7,*;q=0.7',
+      'REMOTE_ADDR'          => '127.0.0.1',
+      'SCRIPT_NAME'          => '',
+      'SCRIPT_FILENAME'      => '',
+    );
+
+    if (in_array(strtolower($method), array('post', 'put', 'delete')))
     {
       $request = $parameters;
       $query = array();
+      $defaults['CONTENT_TYPE'] = 'application/x-www-form-urlencoded';
     }
     else
     {
@@ -127,18 +136,7 @@ class Request
       $query = array_replace($qs, $query);
     }
 
-    $server = array_replace(array(
-      'SERVER_NAME'          => 'localhost',
-      'SERVER_PORT'          => 80,
-      'HTTP_HOST'            => 'localhost',
-      'HTTP_USER_AGENT'      => 'Symfony/X.X',
-      'HTTP_ACCEPT'          => 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
-      'HTTP_ACCEPT_LANGUAGE' => 'en-us,en;q=0.5',
-      'HTTP_ACCEPT_CHARSET'  => 'ISO-8859-1,utf-8;q=0.7,*;q=0.7',
-      'REMOTE_ADDR'          => '127.0.0.1',
-      'SCRIPT_NAME'          => '',
-      'SCRIPT_FILENAME'      => '',
-    ), $server, array(
+    $server = array_replace($defaults, $server, array(
       'REQUEST_METHOD'       => strtoupper($method),
       'PATH_INFO'            => '',
       'REQUEST_URI'          => $uri,
@@ -426,6 +424,16 @@ class Request
     return $this->format;
   }
 
+  public function isMethodSafe()
+  {
+    return in_array(strtolower($this->getMethod()), array('get', 'head'));
+  }
+
+  public function isNoCache()
+  {
+    return $this->headers->getCacheControl()->isNoCache() || 'no-cache' == $this->headers->get('Pragma');
+  }
+
   /**
    * Returns the preferred language.
    *
@@ -464,7 +472,7 @@ class Request
       return $this->languages;
     }
 
-    $languages = $this->splitHttpAcceptHeader($this->headers->get('ACCEPT_LANGUAGE'));
+    $languages = $this->splitHttpAcceptHeader($this->headers->get('Accept-Language'));
     foreach ($languages as $lang)
     {
       if (strstr($lang, '-'))
@@ -514,7 +522,7 @@ class Request
       return $this->charsets;
     }
 
-    return $this->charsets = $this->splitHttpAcceptHeader($this->headers->get('ACCEPT_CHARSET'));
+    return $this->charsets = $this->splitHttpAcceptHeader($this->headers->get('Accept-Charset'));
   }
 
   /**
@@ -529,7 +537,7 @@ class Request
       return $this->acceptableContentTypes;
     }
 
-    return $this->acceptableContentTypes = $this->splitHttpAcceptHeader($this->headers->get('ACCEPT'));
+    return $this->acceptableContentTypes = $this->splitHttpAcceptHeader($this->headers->get('Accept'));
   }
 
   /**
@@ -542,7 +550,7 @@ class Request
    */
   public function isXmlHttpRequest()
   {
-    return 'XMLHttpRequest' == $this->headers->get('X_REQUESTED_WITH');
+    return 'XMLHttpRequest' == $this->headers->get('X-Requested-With');
   }
 
   /**
@@ -785,9 +793,9 @@ class Request
     $headers = array();
     foreach ($this->server->all() as $key => $value)
     {
-      if ('http_' === strtolower(substr($key, 0, 5)))
+      if ('http-' === strtolower(substr($key, 0, 5)))
       {
-        $headers[strtoupper(strtr(substr($key, 5), '-', '_'))] = $value;
+        $headers[substr($key, 5)] = $value;
       }
     }
 
diff --git a/src/Symfony/Components/RequestHandler/Response.php b/src/Symfony/Components/RequestHandler/Response.php
index c338a9acb9..3942c720d3 100644
--- a/src/Symfony/Components/RequestHandler/Response.php
+++ b/src/Symfony/Components/RequestHandler/Response.php
@@ -20,11 +20,12 @@ namespace Symfony\Components\RequestHandler;
  */
 class Response
 {
+  public $headers;
+
   protected $content;
   protected $version;
   protected $statusCode;
   protected $statusText;
-  protected $headers;
   protected $cookies;
 
   static public $statusTexts = array(
@@ -82,11 +83,7 @@ class Response
     $this->setContent($content);
     $this->setStatusCode($status);
     $this->setProtocolVersion('1.0');
-    $this->headers = array();
-    foreach ($headers as $name => $value)
-    {
-      $this->setHeader($name, $value);
-    }
+    $this->headers = new HeaderBag($headers, 'response');
     $this->cookies = array();
   }
 
@@ -102,6 +99,57 @@ class Response
     return (string) $this->getContent();
   }
 
+  /**
+   * Clones the current Response instance.
+   */
+  public function __clone()
+  {
+    $this->headers = clone $this->headers;
+  }
+
+  /**
+   * Sends HTTP headers, including cookies.
+   */
+  public function sendHeaders()
+  {
+    if (!$this->headers->has('Content-Type'))
+    {
+      $this->headers->set('Content-Type', 'text/html');
+    }
+
+    // status
+    header(sprintf('HTTP/%s %s %s', $this->version, $this->statusCode, $this->statusText));
+
+    // headers
+    foreach ($this->headers->all() as $name => $value)
+    {
+      header($name.': '.$value);
+    }
+
+    // cookies
+    foreach ($this->cookies as $cookie)
+    {
+      setrawcookie($cookie['name'], $cookie['value'], $cookie['expire'], $cookie['path'], $cookie['domain'], $cookie['secure'], $cookie['httpOnly']);
+    }
+  }
+
+  /**
+   * Sends content for the current web response.
+   */
+  public function sendContent()
+  {
+    echo $this->content;
+  }
+
+  /**
+   * Sends HTTP headers and content.
+   */
+  public function send()
+  {
+    $this->sendHeaders();
+    $this->sendContent();
+  }
+
   /**
    * Sets the response content
    *
@@ -222,126 +270,4 @@ class Response
   {
     return $this->statusCode;
   }
-
-  /**
-   * Sets a HTTP header.
-   *
-   * @param string  $name     HTTP header name
-   * @param string  $value    Value (if null, remove the HTTP header)
-   * @param bool    $replace  Replace for the value
-   *
-   */
-  public function setHeader($name, $value, $replace = true)
-  {
-    $name = $this->normalizeHeaderName($name);
-
-    if (null === $value)
-    {
-      unset($this->headers[$name]);
-
-      return;
-    }
-
-    if (!$replace)
-    {
-      $current = isset($this->headers[$name]) ? $this->headers[$name] : '';
-      $value = ($current ? $current.', ' : '').$value;
-    }
-
-    $this->headers[$name] = $value;
-
-    return $this;
-  }
-
-  /**
-   * Gets HTTP header current value.
-   *
-   * @param  string $name     HTTP header name
-   * @param  string $default  Default value returned if named HTTP header is not found
-   *
-   * @return array
-   */
-  public function getHeader($name, $default = null)
-  {
-    $name = $this->normalizeHeaderName($name);
-
-    return isset($this->headers[$name]) ? $this->headers[$name] : $default;
-  }
-
-  /**
-   * Checks if the response has given HTTP header.
-   *
-   * @param  string $name  HTTP header name
-   *
-   * @return bool
-   */
-  public function hasHeader($name)
-  {
-    return array_key_exists($this->normalizeHeaderName($name), $this->headers);
-  }
-
-  /**
-   * Retrieves HTTP headers from the current web response.
-   *
-   * @return string HTTP headers
-   */
-  public function getHeaders()
-  {
-    return $this->headers;
-  }
-
-  /**
-   * Sends HTTP headers, including cookies.
-   */
-  public function sendHeaders()
-  {
-    if (!$this->hasHeader('Content-Type'))
-    {
-      $this->setHeader('Content-Type', 'text/html');
-    }
-
-    // status
-    header(sprintf('HTTP/%s %s %s', $this->version, $this->statusCode, $this->statusText));
-
-    // headers
-    foreach ($this->headers as $name => $value)
-    {
-      header($name.': '.$value);
-    }
-
-    // cookies
-    foreach ($this->cookies as $cookie)
-    {
-      setrawcookie($cookie['name'], $cookie['value'], $cookie['expire'], $cookie['path'], $cookie['domain'], $cookie['secure'], $cookie['httpOnly']);
-    }
-  }
-
-  /**
-   * Sends content for the current web response.
-   */
-  public function sendContent()
-  {
-    echo $this->content;
-  }
-
-  /**
-   * Sends HTTP headers and content.
-   */
-  public function send()
-  {
-    $this->sendHeaders();
-    $this->sendContent();
-  }
-
-  /**
-   * Normalizes a HTTP header name.
-   *
-   * @param  string $name The HTTP header name
-   *
-   * @return string The normalized HTTP header name
-   */
-  protected function normalizeHeaderName($name)
-  {
-    return strtr(strtolower($name), '_', '-');
-  }
 }
diff --git a/src/Symfony/Components/RequestHandler/Test/Client.php b/src/Symfony/Components/RequestHandler/Test/Client.php
index f4f8088237..35f8be9c74 100644
--- a/src/Symfony/Components/RequestHandler/Test/Client.php
+++ b/src/Symfony/Components/RequestHandler/Test/Client.php
@@ -156,7 +156,7 @@ EOF;
       $uri = '/'.$matches[2];
     }
 
-    return Request::createFromUri($uri, $request->getMethod(), $request->getParameters(), $request->getFiles(), $request->getCookies(), $request->getServer());
+    return Request::create($uri, $request->getMethod(), $request->getParameters(), $request->getFiles(), $request->getCookies(), $request->getServer());
   }
 
   /**
@@ -168,7 +168,7 @@ EOF;
    */
   protected function filterResponse($response)
   {
-    return new DomResponse($response->getContent(), $response->getStatusCode(), $response->getHeaders(), $response->getCookies());
+    return new DomResponse($response->getContent(), $response->getStatusCode(), $response->headers, $response->getCookies());
   }
 
   /**
diff --git a/src/Symfony/Components/RequestHandler/Test/ResponseTester.php b/src/Symfony/Components/RequestHandler/Test/ResponseTester.php
index aad7b7fb96..463fa205fe 100644
--- a/src/Symfony/Components/RequestHandler/Test/ResponseTester.php
+++ b/src/Symfony/Components/RequestHandler/Test/ResponseTester.php
@@ -38,7 +38,7 @@ class ResponseTester extends Tester
     if (class_exists('Symfony\Components\DomCrawler\Crawler'))
     {
       $this->crawler = new Crawler();
-      $this->crawler->addContent($this->response->getContent(), $this->response->getHeader('Content-Type'));
+      $this->crawler->addContent($this->response->getContent(), $this->response->headers->get('Content-Type'));
     }
   }
 
@@ -121,16 +121,16 @@ class ResponseTester extends Tester
    */
   public function assertHeaderEquals($key, $value)
   {
-    $headers = explode(', ', $this->response->getHeader($key));
+    $headers = explode(', ', $this->response->headers->get($key));
     foreach ($headers as $header)
     {
       if ($header == $value)
       {
-        return $this->test->pass(sprintf('Response header "%s" is "%s" (%s)', $key, $value, $this->response->getHeader($key)));
+        return $this->test->pass(sprintf('Response header "%s" is "%s" (%s)', $key, $value, $this->response->headers->get($key)));
       }
     }
 
-    $this->test->fail(sprintf('Response header "%s" matches "%s" (%s)', $key, $value, $this->response->getHeader($key)));
+    $this->test->fail(sprintf('Response header "%s" matches "%s" (%s)', $key, $value, $this->response->headers->get($key)));
   }
 
   /**
@@ -141,16 +141,16 @@ class ResponseTester extends Tester
    */
   public function assertNotHeaderEquals($key, $value)
   {
-    $headers = explode(', ', $this->response->getHeader($key));
+    $headers = explode(', ', $this->response->headers->get($key));
     foreach ($headers as $header)
     {
       if ($header == $value)
       {
-        return $this->test->fail(sprintf('Response header "%s" is not "%s" (%s)', $key, $value, $this->response->getHeader($key)));
+        return $this->test->fail(sprintf('Response header "%s" is not "%s" (%s)', $key, $value, $this->response->headers->get($key)));
       }
     }
 
-    $this->test->pass(sprintf('Response header "%s" does not match "%s" (%s)', $key, $value, $this->response->getHeader($key)));
+    $this->test->pass(sprintf('Response header "%s" does not match "%s" (%s)', $key, $value, $this->response->headers->get($key)));
   }
 
   /**
@@ -161,16 +161,16 @@ class ResponseTester extends Tester
    */
   public function assertHeaderRegExp($key, $regex)
   {
-    $headers = explode(', ', $this->response->getHeader($key));
+    $headers = explode(', ', $this->response->headers->get($key));
     foreach ($headers as $header)
     {
       if (preg_match($regex, $header))
       {
-        return $this->test->pass(sprintf('Response header "%s" matches "%s" (%s)', $key, $value, $this->response->getHeader($key)));
+        return $this->test->pass(sprintf('Response header "%s" matches "%s" (%s)', $key, $value, $this->response->headers->get($key)));
       }
     }
 
-    return $this->test->fail(sprintf('Response header "%s" matches "%s" (%s)', $key, $value, $this->response->getHeader($key)));
+    return $this->test->fail(sprintf('Response header "%s" matches "%s" (%s)', $key, $value, $this->response->headers->get($key)));
   }
 
   /**
@@ -181,16 +181,16 @@ class ResponseTester extends Tester
    */
   public function assertNotHeaderRegExp($key, $regex)
   {
-    $headers = explode(', ', $this->response->getHeader($key));
+    $headers = explode(', ', $this->response->headers->get($key));
     foreach ($headers as $header)
     {
       if (!preg_match($regex, $header))
       {
-        return $this->test->pass(sprintf('Response header "%s" matches "%s" (%s)', $key, $value, $this->response->getHeader($key)));
+        return $this->test->pass(sprintf('Response header "%s" matches "%s" (%s)', $key, $value, $this->response->headers->get($key)));
       }
     }
 
-    return $this->test->fail(sprintf('Response header "%s" matches "%s" (%s)', $key, $value, $this->response->getHeader($key)));
+    return $this->test->fail(sprintf('Response header "%s" matches "%s" (%s)', $key, $value, $this->response->headers->get($key)));
   }
 
   /**
@@ -337,7 +337,7 @@ class ResponseTester extends Tester
 
     if (null !== $location)
     {
-      $this->test->assertEquals($location, $this->response->getHeader('Location'), sprintf('Page redirected to "%s"', $location));
+      $this->test->assertEquals($location, $this->response->headers->get('Location'), sprintf('Page redirected to "%s"', $location));
     }
   }
 
diff --git a/src/Symfony/Framework/ProfilerBundle/DataCollector/AppDataCollector.php b/src/Symfony/Framework/ProfilerBundle/DataCollector/AppDataCollector.php
index a7a5f394da..60fe6f6330 100644
--- a/src/Symfony/Framework/ProfilerBundle/DataCollector/AppDataCollector.php
+++ b/src/Symfony/Framework/ProfilerBundle/DataCollector/AppDataCollector.php
@@ -27,7 +27,7 @@ class AppDataCollector extends DataCollector
     return array(
       'route'        => $request->path->get('_route') ? $request->path->get('_route') : '<span style="color: #a33">NONE</span>',
       'format'       => $request->getRequestFormat(),
-      'content_type' => $this->manager->getResponse()->getHeader('Content-Type') ? $this->manager->getResponse()->getHeader('Content-Type') : 'text/html',
+      'content_type' => $this->manager->getResponse()->headers->get('Content-Type') ? $this->manager->getResponse()->headers->get('Content-Type') : 'text/html',
       'code'         => $this->manager->getResponse()->getStatusCode(),
     );
   }
diff --git a/src/Symfony/Framework/ProfilerBundle/Listener/WebDebugToolbar.php b/src/Symfony/Framework/ProfilerBundle/Listener/WebDebugToolbar.php
index 2dc4c9e50b..8cce28f34f 100644
--- a/src/Symfony/Framework/ProfilerBundle/Listener/WebDebugToolbar.php
+++ b/src/Symfony/Framework/ProfilerBundle/Listener/WebDebugToolbar.php
@@ -51,7 +51,7 @@ class WebDebugToolbar
     if (
       '3' === substr($response->getStatusCode(), 0, 1)
       ||
-      ($response->hasHeader('Content-Type') && false === strpos($response->getHeader('Content-Type'), 'html'))
+      ($response->headers->has('Content-Type') && false === strpos($response->headers->get('Content-Type'), 'html'))
       ||
       'html' !== $request->getRequestFormat()
       ||
diff --git a/src/Symfony/Framework/WebBundle/Controller.php b/src/Symfony/Framework/WebBundle/Controller.php
index d23ad2a097..a1f2582efb 100644
--- a/src/Symfony/Framework/WebBundle/Controller.php
+++ b/src/Symfony/Framework/WebBundle/Controller.php
@@ -64,7 +64,7 @@ class Controller
     $response->setStatusCode($status);
     foreach ($headers as $name => $value)
     {
-      $response->setHeader($name, $value);
+      $response->headers->set($name, $value);
     }
 
     return $response;
@@ -96,7 +96,7 @@ class Controller
   {
     $response = $this->container->getResponseService();
     $response->setStatusCode($status);
-    $response->setHeader('Location', $url);
+    $response->headers->set('Location', $url);
 
     return $response;
   }
diff --git a/src/Symfony/Framework/WebBundle/Listener/ControllerLoader.php b/src/Symfony/Framework/WebBundle/Listener/ControllerLoader.php
index 76127507b4..2a0665ec64 100644
--- a/src/Symfony/Framework/WebBundle/Listener/ControllerLoader.php
+++ b/src/Symfony/Framework/WebBundle/Listener/ControllerLoader.php
@@ -72,7 +72,7 @@ class ControllerLoader
     $controller[0]->setRequest($request);
 
     $r = new \ReflectionObject($controller[0]);
-    $arguments = $this->getMethodArguments($r->getMethod($controller[1]), $event->getParameter('request')->path->all(), sprintf('%s::%s()', get_class($controller[0]), $controller[1]));
+    $arguments = $this->getMethodArguments($r->getMethod($controller[1]), $request->path->all(), sprintf('%s::%s()', get_class($controller[0]), $controller[1]));
 
     $event->setReturnValue(array($controller, $arguments));
 
diff --git a/src/Symfony/Framework/WebBundle/Listener/ResponseFilter.php b/src/Symfony/Framework/WebBundle/Listener/ResponseFilter.php
index 23df80803d..eae84ce60b 100644
--- a/src/Symfony/Framework/WebBundle/Listener/ResponseFilter.php
+++ b/src/Symfony/Framework/WebBundle/Listener/ResponseFilter.php
@@ -39,7 +39,7 @@ class ResponseFilter
 
   public function filter(Event $event, Response $response)
   {
-    if (!$event->getParameter('main_request') || $response->hasHeader('Content-Type'))
+    if (!$event->getParameter('main_request') || $response->headers->has('Content-Type'))
     {
       return $response;
     }
@@ -48,7 +48,7 @@ class ResponseFilter
     $format = $request->getRequestFormat();
     if ((null !== $format) && $mimeType = $request->getMimeType($format))
     {
-      $response->setHeader('Content-Type', $mimeType);
+      $response->headers->set('Content-Type', $mimeType);
     }
 
     return $response;
diff --git a/tests/Symfony/Tests/Components/RequestHandler/RequestBagTest.php b/tests/Symfony/Tests/Components/RequestHandler/ParameterBagTest.php
similarity index 68%
rename from tests/Symfony/Tests/Components/RequestHandler/RequestBagTest.php
rename to tests/Symfony/Tests/Components/RequestHandler/ParameterBagTest.php
index 94b662b65a..8ef318dff3 100644
--- a/tests/Symfony/Tests/Components/RequestHandler/RequestBagTest.php
+++ b/tests/Symfony/Tests/Components/RequestHandler/ParameterBagTest.php
@@ -11,12 +11,12 @@
 
 namespace Symfony\Tests\Components\RequestHandler;
 
-use Symfony\Components\RequestHandler\RequestBag;
+use Symfony\Components\RequestHandler\ParameterBag;
 
-class RequestBagTest extends \PHPUnit_Framework_TestCase
+class ParameterBagTest extends \PHPUnit_Framework_TestCase
 {
   /**
-   * @covers Symfony\Components\RequestHandler\RequestBag::__construct
+   * @covers Symfony\Components\RequestHandler\ParameterBag::__construct
    */
   public function testConstructor()
   {
@@ -24,20 +24,20 @@ class RequestBagTest extends \PHPUnit_Framework_TestCase
   }
 
   /**
-   * @covers Symfony\Components\RequestHandler\RequestBag::all
+   * @covers Symfony\Components\RequestHandler\ParameterBag::all
    */
   public function testAll()
   {
-    $bag = new RequestBag(array('foo' => 'bar'));
+    $bag = new ParameterBag(array('foo' => 'bar'));
     $this->assertEquals(array('foo' => 'bar'), $bag->all(), '->all() gets all the input');
   }
 
   /**
-   * @covers Symfony\Components\RequestHandler\RequestBag::replace
+   * @covers Symfony\Components\RequestHandler\ParameterBag::replace
    */
   public function testReplace()
   {
-    $bag = new RequestBag(array('foo' => 'bar'));
+    $bag = new ParameterBag(array('foo' => 'bar'));
 
     $bag->replace(array('FOO' => 'BAR'));
     $this->assertEquals(array('FOO' => 'BAR'), $bag->all(), '->replace() replaces the input with the argument');
@@ -45,11 +45,11 @@ class RequestBagTest extends \PHPUnit_Framework_TestCase
   }
 
   /**
-   * @covers Symfony\Components\RequestHandler\RequestBag::get
+   * @covers Symfony\Components\RequestHandler\ParameterBag::get
    */
   public function testGet()
   {
-    $bag = new RequestBag(array('foo' => 'bar', 'null' => null));
+    $bag = new ParameterBag(array('foo' => 'bar', 'null' => null));
 
     $this->assertEquals('bar', $bag->get('foo'), '->get() gets the value of a parameter');
     $this->assertEquals('default', $bag->get('unknown', 'default'), '->get() returns second argument as default if a parameter is not defined');
@@ -57,11 +57,11 @@ class RequestBagTest extends \PHPUnit_Framework_TestCase
   }
 
   /**
-   * @covers Symfony\Components\RequestHandler\RequestBag::set
+   * @covers Symfony\Components\RequestHandler\ParameterBag::set
    */
   public function testSet()
   {
-    $bag = new RequestBag(array());
+    $bag = new ParameterBag(array());
 
     $bag->set('foo', 'bar');
     $this->assertEquals('bar', $bag->get('foo'), '->set() sets the value of parameter');
@@ -71,55 +71,55 @@ class RequestBagTest extends \PHPUnit_Framework_TestCase
   }
 
   /**
-   * @covers Symfony\Components\RequestHandler\RequestBag::has
+   * @covers Symfony\Components\RequestHandler\ParameterBag::has
    */
   public function testHas()
   {
-    $bag = new RequestBag(array('foo' => 'bar'));
+    $bag = new ParameterBag(array('foo' => 'bar'));
 
     $this->assertTrue($bag->has('foo'), '->has() returns true if a parameter is defined');
     $this->assertFalse($bag->has('unknown'), '->has() return false if a parameter is not defined');
   }
 
   /**
-   * @covers Symfony\Components\RequestHandler\RequestBag::getAlpha
+   * @covers Symfony\Components\RequestHandler\ParameterBag::getAlpha
    */
   public function testGetAlpha()
   {
-    $bag = new RequestBag(array('word' => 'foo_BAR_012'));
+    $bag = new ParameterBag(array('word' => 'foo_BAR_012'));
 
     $this->assertEquals('fooBAR', $bag->getAlpha('word'), '->getAlpha() gets only alphabetic characters');
     $this->assertEquals('', $bag->getAlpha('unknown'), '->getAlpha() returns empty string if a parameter is not defined');
   }
 
   /**
-   * @covers Symfony\Components\RequestHandler\RequestBag::getAlnum
+   * @covers Symfony\Components\RequestHandler\ParameterBag::getAlnum
    */
   public function testGetAlnum()
   {
-    $bag = new RequestBag(array('word' => 'foo_BAR_012'));
+    $bag = new ParameterBag(array('word' => 'foo_BAR_012'));
 
     $this->assertEquals('fooBAR012', $bag->getAlnum('word'), '->getAlnum() gets only alphanumeric characters');
     $this->assertEquals('', $bag->getAlnum('unknown'), '->getAlnum() returns empty string if a parameter is not defined');
   }
 
   /**
-   * @covers Symfony\Components\RequestHandler\RequestBag::getDigits
+   * @covers Symfony\Components\RequestHandler\ParameterBag::getDigits
    */
   public function testGetDigits()
   {
-    $bag = new RequestBag(array('word' => 'foo_BAR_012'));
+    $bag = new ParameterBag(array('word' => 'foo_BAR_012'));
 
     $this->assertEquals('012', $bag->getDigits('word'), '->getDigits() gets only digits as string');
     $this->assertEquals('', $bag->getDigits('unknown'), '->getDigits() returns empty string if a parameter is not defined');
   }
 
   /**
-   * @covers Symfony\Components\RequestHandler\RequestBag::getInt
+   * @covers Symfony\Components\RequestHandler\ParameterBag::getInt
    */
   public function testGetInt()
   {
-    $bag = new RequestBag(array('digits' => '0123'));
+    $bag = new ParameterBag(array('digits' => '0123'));
 
     $this->assertEquals(123, $bag->getInt('digits'), '->getInt() gets a value of parameter as integer');
     $this->assertEquals(0, $bag->getInt('unknown'), '->getInt() returns zero if a parameter is not defined');
diff --git a/tests/Symfony/Tests/Components/RequestHandler/RequestTest.php b/tests/Symfony/Tests/Components/RequestHandler/RequestTest.php
index ab2a7a97eb..fbd2b0140b 100644
--- a/tests/Symfony/Tests/Components/RequestHandler/RequestTest.php
+++ b/tests/Symfony/Tests/Components/RequestHandler/RequestTest.php
@@ -61,7 +61,7 @@ class RequestTest extends \PHPUnit_Framework_TestCase
     $this->assertEquals(array('foo' => 'foobar'), $dup->query->all(), '->duplicate() overrides the query parameters if provided');
     $this->assertEquals(array('foo' => 'foobar'), $dup->request->all(), '->duplicate() overrides the request parameters if provided');
     $this->assertEquals(array('foo' => 'foobar'), $dup->path->all(), '->duplicate() overrides the path parameters if provided');
-    $this->assertEquals(array('FOO' => 'foobar'), $dup->headers->all(), '->duplicate() overrides the HTTP header if provided');
+    $this->assertEquals(array('foo' => 'foobar'), $dup->headers->all(), '->duplicate() overrides the HTTP header if provided');
   }
 
   /**