Responder::setHeaders

static function setHeaders($etag, $lastModified, $compositeHeader = false, $contentType = false)
{
	if ($etag !== false)
	{
		header("ETag: ".$etag);
	}

	header("Expires: Fri, 07 Jun 1974 04:00:00 GMT");

	if ($lastModified !== false)
	{
		$utc = gmdate("D, d M Y H:i:s", $lastModified)." GMT";
		header("Last-Modified: ".$utc);
	}

	if ($contentType !== false)
	{
		header("Content-type: ".$contentType);
	}

	if ($compositeHeader !== false)
	{
		header("X-Bitrix-Composite: Cache (".$compositeHeader.")");
	}
}