// 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 common = require('../common'); var assert = require('assert'); var dgram = require('dgram'), util = require('util'), assert = require('assert'), Buffer = require('buffer').Buffer; var LOCAL_BROADCAST_HOST = '224.0.0.1'; var sendMessages = [ new Buffer('First message to send'), new Buffer('Second message to send'), new Buffer('Third message to send'), new Buffer('Fourth message to send') ]; var listenSockets = []; var sendSocket = dgram.createSocket('udp4'); sendSocket.on('close', function() { console.error('sendSocket closed'); }); sendSocket.setBroadcast(true); sendSocket.setMulticastTTL(1); sendSocket.setMulticastLoopback(true); var i = 0; sendSocket.sendNext = function() { var buf = sendMessages[i++]; if (!buf) { try { sendSocket.close(); } catch (e) {} return; } sendSocket.send(buf, 0, buf.length, common.PORT, LOCAL_BROADCAST_HOST, function(err) { if (err) throw err; console.error('sent %s to %s', util.inspect(buf.toString()), LOCAL_BROADCAST_HOST + common.PORT); process.nextTick(sendSocket.sendNext); }); }; var listener_count = 0; function mkListener() { var receivedMessages = []; var listenSocket = dgram.createSocket('udp4'); listenSocket.addMembership(LOCAL_BROADCAST_HOST); listenSocket.on('message', function(buf, rinfo) { console.error('received %s from %j', util.inspect(buf.toString()), rinfo); receivedMessages.push(buf); if (receivedMessages.length == sendMessages.length) { listenSocket.dropMembership(LOCAL_BROADCAST_HOST); process.nextTick(function() { // TODO should be changed to below. // listenSocket.dropMembership(LOCAL_BROADCAST_HOST, function() { listenSocket.close(); }); } }); listenSocket.on('close', function() { console.error('listenSocket closed -- checking received messages'); var count = 0; receivedMessages.forEach(function(buf) { for (var i = 0; i < sendMessages.length; ++i) { if (buf.toString() === sendMessages[i].toString()) { count++; break; } } }); console.error('count %d', count); //assert.strictEqual(count, sendMessages.length); }); listenSocket.on('listening', function() { listenSockets.push(listenSocket); if (listenSockets.length == 3) { sendSocket.sendNext(); } }); listenSocket.bind(common.PORT); } mkListener(); mkListener(); mkListener();