$client->attach(new test);
$client->enqueue(new http\Client\Request("GET", "http://localhost:$port/"), function($r) {
var_dump($r->getResponseCode());
$client->attach(new test);
$client->enqueue(new http\Client\Request("GET", "http://localhost:$port/"), function($r) {
var_dump($r->getResponseCode());