1'use strict'; 2const common = require('../common'); 3 4// This test should fail because at present `cluster` does not know how to share 5// a socket when `worker1` binds with `port: 0`, and others try to bind to the 6// assigned port number from `worker1` 7// 8// *Note*: since this is a `known_issue` we try to swallow all errors except 9// the one we are interested in 10 11const assert = require('assert'); 12const cluster = require('cluster'); 13const dgram = require('dgram'); 14const BYE = 'bye'; 15 16if (cluster.isPrimary) { 17 const worker1 = cluster.fork(); 18 19 // Verify that Windows doesn't support this scenario 20 worker1.on('error', (err) => { 21 if (err.code === 'ENOTSUP') throw err; 22 }); 23 24 worker1.on('message', (msg) => { 25 if (typeof msg !== 'object') process.exit(0); 26 if (msg.message !== 'success') process.exit(0); 27 if (typeof msg.port1 !== 'number') process.exit(0); 28 29 const worker2 = cluster.fork({ PRT1: msg.port1 }); 30 worker2.on('message', () => process.exit(0)); 31 worker2.on('exit', (code, signal) => { 32 // This is the droid we are looking for 33 assert.strictEqual(code, 0); 34 assert.strictEqual(signal, null); 35 }); 36 37 // cleanup anyway 38 process.on('exit', () => { 39 worker1.send(BYE); 40 worker2.send(BYE); 41 }); 42 }); 43 // end primary code 44} else { 45 // worker code 46 process.on('message', (msg) => msg === BYE && process.exit(0)); 47 48 // First worker will bind to '0', second will try the assigned port and fail 49 const PRT1 = process.env.PRT1 || 0; 50 const socket1 = dgram.createSocket('udp4', () => {}); 51 socket1.on('error', PRT1 === 0 ? () => {} : assert.fail); 52 socket1.bind( 53 { address: common.localhostIPv4, port: PRT1, exclusive: false }, 54 () => process.send({ message: 'success', port1: socket1.address().port }), 55 ); 56} 57