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'use strict';
var common = require('../common');
var assert = require('assert');
var cluster = require('cluster');
var net = require('net');
if (cluster.isWorker) {
net.createServer(function(socket) {
socket.end('echo');
}).listen(common.PORT, '127.0.0.1');
net.createServer(function(socket) {
socket.end('echo');
}).listen(common.PORT + 1, '127.0.0.1');
} else if (cluster.isMaster) {
var servers = 2;
// test a single TCP server
var testConnection = function(port, cb) {
var socket = net.connect(port, '127.0.0.1', function() {
// buffer result
var result = '';
socket.on('data', function(chunk) { result += chunk; });
// check result
socket.on('end', function() {
cb(result === 'echo');
});
});
};
// test both servers created in the cluster
var testCluster = function(cb) {
var done = 0;
for (var i = 0, l = servers; i < l; i++) {
testConnection(common.PORT + i, function(success) {
assert.ok(success);
done += 1;
if (done === servers) {
cb();
}
});
}
};
// start two workers and execute callback when both is listening
var startCluster = function(cb) {
var workers = 8;
var online = 0;
for (var i = 0, l = workers; i < l; i++) {
var worker = cluster.fork();
worker.on('listening', function() {
online += 1;
if (online === workers * servers) {
cb();
}
});
}
};
var results = {
start: 0,
test: 0,
disconnect: 0
};
var test = function(again) {
//1. start cluster
startCluster(function() {
results.start += 1;
//2. test cluster
testCluster(function() {
results.test += 1;
//3. disconnect cluster
cluster.disconnect(function() {
results.disconnect += 1;
// run test again to confirm cleanup
if (again) {
test();
}
});
});
});
};
test(true);
process.once('exit', function() {
assert.equal(results.start, 2);
assert.equal(results.test, 2);
assert.equal(results.disconnect, 2);
});
}
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