Amp\Artax\Client::removePortFromHost PHP Method

    private function removePortFromHost($host)
    {
        // Though servers are supposed to be able to handle standard port names on the end of the
        // Host header some fail to do this correctly. As a result, we strip the port from the end
        // if it's a standard 80 or 443
        if (strpos($host, ':80') === strlen($host) - 3) {
            $host = substr($host, 0, -3);
        } else {
            if (strpos($host, ':443') === strlen($host) - 4) {
                $host = substr($host, 0, -4);
            }
        }
        return $host;
    }