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'use strict';
// Test that errors propagated from cluster workers are properly
// received in their master. Creates an EADDRINUSE condition by forking
// a process in child cluster and propagates the error to the master.
const common = require('../common');
const assert = require('assert');
const cluster = require('cluster');
const fork = require('child_process').fork;
const fs = require('fs');
const net = require('net');
if (cluster.isMaster) {
const worker = cluster.fork();
// makes sure master is able to fork the worker
cluster.on('fork', common.mustCall(function() {}));
// makes sure the worker is ready
worker.on('online', common.mustCall(function() {}));
worker.on('message', common.mustCall(function(err) {
// disconnect first, so that we will not leave zombies
worker.disconnect();
console.log(err);
assert.strictEqual('EADDRINUSE', err.code);
}));
process.on('exit', function() {
console.log('master exited');
try {
fs.unlinkSync(common.PIPE);
} catch (e) {
}
});
} else {
common.refreshTmpDir();
var cp = fork(common.fixturesDir + '/listen-on-socket-and-exit.js',
{ stdio: 'inherit' });
// message from the child indicates it's ready and listening
cp.on('message', common.mustCall(function() {
const server = net.createServer().listen(common.PIPE, function() {
// message child process so that it can exit
cp.send('end');
// inform master about the unexpected situation
process.send('PIPE should have been in use.');
});
server.on('error', function(err) {
console.log('parent error, ending');
// message to child process tells it to exit
cp.send('end');
// propagate error to parent
process.send(err);
});
}));
}
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