Check to see if the modified headers need to reset any of the managed headers like cache-control
string $header Header that changed:
Overrides AbstractMessage::changedHeader
protected function changedHeader($header) {
parent::changedHeader($header);
if ($header == 'host') {
// If the Host header was changed, be sure to update the internal URL
$this
->setHost((string) $this
->getHeader('Host'));
}
}