framework/web/Request.php
public function getSecurePort()
    {
        if ($this->_securePort === null) {
            $serverPort = $this->getServerPort();
            $this->_securePort = $this->getIsSecureConnection() && $serverPort !== null ? $serverPort : 443;
        }

        return $this->_securePort;
    }
public function getSecurePort()
    {
        if ($this->_securePort === null) {
            $serverPort = $this->getServerPort();
            $this->_securePort = $this->getIsSecureConnection() && $serverPort !== null ? $serverPort : 443;
        }

        return $this->_securePort;
    }
Returns the port to use for secure requests.
Defaults to 443, or the port specified by the server if the current
request is secure.
@return int port number for secure requests.
@see setSecurePort()