node/test/parallel/test-cluster-dgram-2.js
James M Snell baa0ffdab3 test: refactor/cleanup a number of cluster tests
* Move shared code into common
* Favor use of strictEqual
* Add some missing common.mustCalls
* Other general cleanup

PR-URL: https://github.com/nodejs/node/pull/8261
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
2016-09-01 07:13:47 -07:00

63 lines
1.4 KiB
JavaScript

'use strict';
const common = require('../common');
const NUM_WORKERS = 4;
const PACKETS_PER_WORKER = 10;
const cluster = require('cluster');
const dgram = require('dgram');
if (common.isWindows) {
common.skip('dgram clustering is currently not supported ' +
'on windows.');
return;
}
if (cluster.isMaster)
master();
else
worker();
function master() {
var received = 0;
// Start listening on a socket.
var socket = dgram.createSocket('udp4');
socket.bind(common.PORT);
// Disconnect workers when the expected number of messages have been
// received.
socket.on('message', common.mustCall((data, info) => {
received++;
if (received === PACKETS_PER_WORKER * NUM_WORKERS) {
// Close the socket.
socket.close();
// Disconnect all workers.
cluster.disconnect();
}
}, NUM_WORKERS * PACKETS_PER_WORKER));
// Fork workers.
for (var i = 0; i < NUM_WORKERS; i++)
cluster.fork();
}
function worker() {
// Create udp socket and send packets to master.
const socket = dgram.createSocket('udp4');
const buf = Buffer.from('hello world');
// This test is intended to exercise the cluster binding of udp sockets, but
// since sockets aren't clustered when implicitly bound by at first call of
// send(), explicitly bind them to an ephemeral port.
socket.bind(0);
for (var i = 0; i < PACKETS_PER_WORKER; i++)
socket.send(buf, 0, buf.length, common.PORT, '127.0.0.1');
}