}
	}

	// Shuffle the connections.
	rand.Shuffle(len(lbConns), func(i, j int) {
		lbConns[i], lbConns[j] = lbConns[j], lbConns[i]
	})

	return &roundRobin{
		weightedConnections: newLBConnection("RoundRobinLB", lbConns),
	}
}

type roundRobin struct {
	*weightedConnections

	next      int
	nextMutex sync.Mutex
}

func (lb *roundRobin) Request(onDone func()) {