/**
* Initiates an new PHPCrawlerResponseHeader.
*
* @param string $header_string A complete response-header as it was send by the server
* @param string $source_url The URL of the website the header was recevied from.
* @internal
*/
public function __construct($header_string, $source_url)
{
$this->header_raw = $header_string;
$this->source_url = $source_url;
$this->http_status_code = PHPCrawlerUtils::getHTTPStatusCode($header_string);
$this->content_type = strtolower(PHPCrawlerUtils::getHeaderValue($header_string, "content-type"));
$this->content_length = strtolower(PHPCrawlerUtils::getHeaderValue($header_string, "content-length"));
$this->cookies = PHPCrawlerUtils::getCookiesFromHeader($header_string, $source_url);
}