$socketFiber = new Fiber(function(){
    Async::await($socket->connect());
});
$curlFiber = new Fiber(function(){
    Async::await($curlHandle->connect());
});
$mysqliFiber = new Fiber(function(){
    Async::await($mysqli->connect());
});

$socketFiber->start();
$curlFiber ->start();
$mysqliFiber ->start();
Async::run();