public function sendNext($conn)
{
if ($conn->count < 10) {
if (!empty($this->requests)) {
$request = array_pop($this->requests);
$request[] = $conn;
call_user_func_array(array($this, "send"), $request);
} else {
if (array_search($conn, $this->pool, true) === false) {
$this->pool[] = $conn;
}
}
}
}