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test fix for dgram multicast test
// 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'),
assert = require('assert'),
dgram = require('dgram'),
util = require('util'),
assert = require('assert'),
Buffer = require('buffer').Buffer,
fork = require('child_process').fork,
LOCAL_BROADCAST_HOST = '224.0.0.1',
TIMEOUT = 5000,
messages = [
new Buffer('First message to send'),
new Buffer('Second message to send'),
new Buffer('Third message to send'),
new Buffer('Fourth message to send')
];
if (process.argv[2] !== 'child') {
var workers = {},
listeners = 3,
listening = 0,
dead = 0,
i = 0,
done = 0,
timer = null;
//exit the test if it doesn't succeed within TIMEOUT
timer = setTimeout(function () {
console.error('Responses were not received within %d ms.', TIMEOUT);
console.error('Fail');
process.exit(1);
}, TIMEOUT);
//launch child processes
for (var x = 0; x < listeners; x++) {
(function () {
var worker = fork(process.argv[1], ['child']);
workers[worker.pid] = worker;
worker.messagesReceived = [];
//handle the death of workers
worker.on('exit', function (code, signal) {
//don't consider this the true death if the worker has finished successfully
//or if it exited with 0
if (worker.isDone || code === 0) {
return;
}
dead += 1;
console.error('Worker %d died. %d dead of %d', worker.pid, dead, listeners);
if (dead === listeners) {
console.error('All workers have died.');
console.error('Fail');
process.exit(1);
}
});
worker.on('message', function (msg) {
if (msg.listening) {
listening += 1;
if (listening === listeners) {
//all child process are listening, so start sending
sendSocket.sendNext();
}
}
else if (msg.message) {
worker.messagesReceived.push(msg.message);
if (worker.messagesReceived.length === messages.length) {
done += 1;
worker.isDone = true;
console.error('%d received %d messages total.', worker.pid,
worker.messagesReceived.length);
}
if (done === listeners) {
console.error('All workers have received the required number of '
+ 'messages. Will now compare.');
Object.keys(workers).forEach(function (pid) {
var worker = workers[pid];
var count = 0;
worker.messagesReceived.forEach(function(buf) {
for (var i = 0; i < messages.length; ++i) {
if (buf.toString() === messages[i].toString()) {
count++;
break;
}
}
});
console.error('%d received %d matching messages.', worker.pid
, count);
assert.equal(count, messages.length
,'A worker received an invalid multicast message');
});
clearTimeout(timer);
console.error('Success');
}
}
});
})(x);
}
var sendSocket = dgram.createSocket('udp4');
sendSocket.bind(); // FIXME a libuv limitation makes it necessary to bind()
// before calling any of the set*() functions - the bind()
// call is what creates the actual socket...
sendSocket.setTTL(1);
sendSocket.setBroadcast(true);
sendSocket.setMulticastTTL(1);
sendSocket.setMulticastLoopback(true);
sendSocket.on('close', function() {
console.error('sendSocket closed');
});
sendSocket.sendNext = function() {
var buf = messages[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);
});
};
}
if (process.argv[2] === 'child') {
var receivedMessages = [];
var listenSocket = dgram.createSocket('udp4');
listenSocket.on('message', function(buf, rinfo) {
console.error('%s received %s from %j', process.pid
,util.inspect(buf.toString()), rinfo);
receivedMessages.push(buf);
process.send({ message : buf.toString() });
if (receivedMessages.length == messages.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() {
process.exit();
});
listenSocket.on('listening', function() {
process.send({ listening : true });
});
listenSocket.bind(common.PORT);
listenSocket.addMembership(LOCAL_BROADCAST_HOST);
}
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