use Saxulum\HttpClient\Joomla\HttpClient;
use Saxulum\HttpClient\Request;

$httpClient = new HttpClient();
$response = $httpClient->request(new Request(
    '1.1',
    Request::METHOD_GET,
    'http://en.wikipedia.org',
    array(
        'Connection' => 'close',
    )
));

use Joomla\Http\Http;
use Joomla\Http\Transport\Stream as StreamTransport;
use Saxulum\HttpClient\Joomla\HttpClient;

$options = array();
$transport = new StreamTransport($options);
$http = new Http($options, $transport);

$httpClient = new HttpClient($http);