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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);
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();
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