defer t.connsPerHostMu.Unlock()

	if t.MaxConnsPerHost <= 0 {
		t.startDialConnForLocked(w)
		return
	}

	if n := t.connsPerHost[w.key]; n < t.MaxConnsPerHost {
		if t.connsPerHost == nil {
			t.connsPerHost = make(map[connectMethodKey]int)
		}
		t.connsPerHost[w.key] = n + 1
		t.startDialConnForLocked(w)
		return
	}

	if t.connsPerHostWait == nil {