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'use strict';
var NUM_WORKERS = 4;
var PACKETS_PER_WORKER = 10;
var cluster = require('cluster');
var common = require('../common');
var 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', function(data, info) {
received++;
if (received == PACKETS_PER_WORKER * NUM_WORKERS) {
console.log('master received %d packets', received);
// Close the socket.
socket.close();
// Disconnect all workers.
cluster.disconnect();
}
});
// Fork workers.
for (var i = 0; i < NUM_WORKERS; i++)
cluster.fork();
}
function worker() {
// Create udp socket and send packets to master.
var socket = dgram.createSocket('udp4');
var buf = new Buffer('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');
console.log('worker %d sent %d packets', cluster.worker.id,
PACKETS_PER_WORKER);
}
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