Function getNextNodeId

p2pserver/block_sync.go:995–1006

Using polling for load balance

(nextNodeIndex int, nodeList []uint64)

//Using polling for load balance
func getNextNodeId(nextNodeIndex int, nodeList []uint64) (int, uint64) {
	num := len(nodeList)
	if num == 0 {
		return 0, 0
	}
	if nextNodeIndex >= num {
		nextNodeIndex = 0
	}
	index := nextNodeIndex
	nextNodeIndex++
	return nextNodeIndex, nodeList[index]
}