// Copyright Joyent, Inc. and other Node contributors. // // Permission is hereby granted, free of charge, to any person obtaining a // copy of this software and associated documentation files (the // "Software"), to deal in the Software without restriction, including // without limitation the rights to use, copy, modify, merge, publish, // distribute, sublicense, and/or sell copies of the Software, and to permit // persons to whom the Software is furnished to do so, subject to the // following conditions: // // The above copyright notice and this permission notice shall be included // in all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE // USE OR OTHER DEALINGS IN THE SOFTWARE. var NUM_WORKERS = 4; var PACKETS_PER_WORKER = 10; var assert = require('assert'); var cluster = require('cluster'); var common = require('../common'); var dgram = require('dgram'); if (process.platform === 'win32') { console.warn("dgram clustering is currently not supported on windows."); process.exit(0); } if (cluster.isMaster) master(); else worker(); function master() { var i; 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'); 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); }