| // 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(); |
| |