Amp\Artax\Uri::__construct PHP Method

    public function __construct($uri)
    {
        $uri = (string) $uri;
        if (!($parts = $this->parse($uri))) {
            throw new \DomainException('Invalid URI specified at ' . get_class($this) . '::__construct Argument 1');
        }
        $this->uri = $uri;
        foreach ($parts as $key => $value) {
            $this->{$key} = $value;
        }
        // http://www.apps.ietf.org/rfc/rfc3986.html#sec-3.1
        // "schemes are case-insensitive"
        $this->scheme = strtolower($this->scheme);
        // http://www.apps.ietf.org/rfc/rfc3986.html#sec-3.2.2
        // "Although host is case-insensitive, producers and normalizers should use lowercase for
        // registered names and hexadecimal addresses for the sake of uniformity"
        $this->host = strtolower($this->host);
        if ($this->port && $this->scheme) {
            $this->normalizeDefaultPort();
        }
        $ip = @inet_pton($this->host);
        if (isset($ip[5])) {
            $this->isIpV6 = true;
        } elseif ($ip) {
            $this->isIpv4 = true;
        }
        $this->parseQueryParameters();
        if ($this->fragment) {
            $this->fragment = rawurldecode($this->fragment);
            $this->fragment = rawurlencode($this->fragment);
        }
    }