const dgram = require('dgram');

const PORT = common.PORT;

// `num` is the number of send requests to queue up each time.

// `n` is the number of send requests to queue up each time.

// Keep it reasonably high (>10) otherwise you're benchmarking the speed of

// event loop cycles more than anything else.

const bench = common.createBenchmark(main, {

len: [64, 256, 1024],

num: [100],

chunks: [1, 2, 4, 8],

len: [64, 512, 1024],

n: [100],

chunks: [1, 8],

type: ['send', 'recv'],

dur: [5],

});

function main({ dur, len, num, type, chunks }) {

function main({ dur, len, n, type, chunks }) {

const chunk = [];

for (let i = 0; i < chunks; i++) {

chunk.push(Buffer.allocUnsafe(Math.round(len / chunks)));

const socket = dgram.createSocket('udp4');

function onsend() {

if (sent++ % num === 0) {

if (sent++ % n === 0) {

// The setImmediate() is necessary to have event loop progress on OSes

// that only perform synchronous I/O on nonblocking UDP sockets.

setImmediate(() => {

for (let i = 0; i < num; i++) {

for (let i = 0; i < n; i++) {

socket.send(chunk, PORT, '127.0.0.1', onsend);

}

});