simgrid::s4u::this_actor::sleep_for(0.5);
mbox->setReceiver(Actor::self());
mbox->get_async(&received)->wait();
break;
default:
simgrid::s4u::this_actor::sleep_for(0.5);
mbox->setReceiver(Actor::self());
mbox->get_async(&received)->wait();
break;
default: