TYPO3 Core

If we are behind a reverse proxy (that uses http connection to TYPO3 and https to the client) and host header value includes port then check if:

$parsedHostValue['host'] equals strtolower($_SERVER['SERVER_NAME'])
and
(string)$parsedHostValue['port'] equals $defaultPort.

Otherwise SERVER_PORT equals Port 80 and parsedHostValue['port'] is reporting NULL (or 443 when included in the header) and the check always fails =>
- (string)$parsedHostValue['port']: 443 != $_SERVER['SERVER_PORT']: 80
- $defaultPort: 443 != $_SERVER['SERVER_PORT']: 80

My code might be utter trash so please check if it is secure.

This issue was automatically created from https://github.com/TYPO3/TYPO3.CMS/pull/217