/**
* Creates an array of cacheable and normalized request headers
*
* @param HeaderBag $headers
* @return array
*/
private function persistHeaders(HeaderBag $headers)
{
// Headers are excluded from the caching (see RFC 2616:13.5.1)
static $noCache = array('age', 'connection', 'keep-alive', 'proxy-authenticate', 'proxy-authorization', 'te', 'trailers', 'transfer-encoding', 'upgrade', 'set-cookie', 'set-cookie2');
foreach ($headers as $key => $value) {
if (in_array($key, $noCache) || strpos($key, 'x-') === 0) {
$headers->remove($key);
}
}
// Postman client sends a dynamic token to bypass a Chrome bug
$headers->remove('postman-token');
return $headers;
}
/**
* Modifies the response so that it conforms to the rules defined for a 304 status code.
*
* This sets the status, removes the body, and discards any headers
* that MUST NOT be included in 304 responses.
*
* @see http://tools.ietf.org/html/rfc2616#section-10.3.5
*/
public function setNotModified()
{
$this->setStatusCode(304);
$this->setContent(null);
// remove headers that MUST NOT be included with 304 Not Modified responses
foreach (array('Allow', 'Content-Encoding', 'Content-Language', 'Content-Length', 'Content-MD5', 'Content-Type', 'Last-Modified') as $header) {
$this->headers->remove($header);
}
}
protected function prepareRequestUri()
{
$requestUri = '';
if ($this->headers->has('X_ORIGINAL_URL')) {
// IIS with Microsoft Rewrite Module
$requestUri = $this->headers->get('X_ORIGINAL_URL');
$this->headers->remove('X_ORIGINAL_URL');
$this->server->remove('HTTP_X_ORIGINAL_URL');
$this->server->remove('UNENCODED_URL');
$this->server->remove('IIS_WasUrlRewritten');
} elseif ($this->headers->has('X_REWRITE_URL')) {
// IIS with ISAPI_Rewrite
$requestUri = $this->headers->get('X_REWRITE_URL');
$this->headers->remove('X_REWRITE_URL');
} elseif ($this->server->get('IIS_WasUrlRewritten') == '1' && $this->server->get('UNENCODED_URL') != '') {
// IIS7 with URL Rewrite: make sure we get the unencoded url (double slash problem)
$requestUri = $this->server->get('UNENCODED_URL');
$this->server->remove('UNENCODED_URL');
$this->server->remove('IIS_WasUrlRewritten');
} elseif ($this->server->has('REQUEST_URI')) {
$requestUri = $this->server->get('REQUEST_URI');
// HTTP proxy reqs setup request uri with scheme and host [and port] + the url path, only use url path
$schemeAndHttpHost = $this->getSchemeAndHttpHost();
if (strpos($requestUri, $schemeAndHttpHost) === 0) {
$requestUri = substr($requestUri, strlen($schemeAndHttpHost));
}
} elseif ($this->server->has('ORIG_PATH_INFO')) {
// IIS 5.0, PHP as CGI
$requestUri = $this->server->get('ORIG_PATH_INFO');
if ('' != $this->server->get('QUERY_STRING')) {
$requestUri .= '?' . $this->server->get('QUERY_STRING');
}
$this->server->remove('ORIG_PATH_INFO');
}
// normalize the request URI to ease creating sub-requests from this request
$this->server->set('REQUEST_URI', $requestUri);
return $requestUri;
}
/**
* Removes a header.
*
* @param string $key
*/
public function remove($key)
{
parent::remove($key);
$this->updateRequest();
}
/**
* {@inheritdoc}
*
* @api
*/
public function remove($key)
{
parent::remove($key);
$uniqueKey = strtr(strtolower($key), '_', '-');
unset($this->headerNames[$uniqueKey]);
}
