114 lines
3.7 KiB
JavaScript
114 lines
3.7 KiB
JavaScript
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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'use strict';
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// This test starts two clustered HTTP servers on the same port. It expects the
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// first cluster to succeed and the second cluster to fail with EADDRINUSE.
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//
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// The test may seem complex but most of it is plumbing that routes messages
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// from the child processes back to the supervisor. As a tree it looks something
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// like this:
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//
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// <supervisor>
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// / \
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// <master 1> <master 2>
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// / \
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// <worker 1> <worker 2>
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//
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// The first worker starts a server on a fixed port and fires a ready message
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// that is routed to the second worker. When it tries to bind, it expects to
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// see an EADDRINUSE error.
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//
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// See https://github.com/joyent/node/issues/2721 for more details.
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const common = require('../common');
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const assert = require('assert');
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const cluster = require('cluster');
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const fork = require('child_process').fork;
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const http = require('http');
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const id = process.argv[2];
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if (!id) {
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const a = fork(__filename, ['one']);
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const b = fork(__filename, ['two']);
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a.on('exit', common.mustCall((c) => {
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if (c) {
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b.send('QUIT');
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throw new Error(`A exited with ${c}`);
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}
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}));
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b.on('exit', common.mustCall((c) => {
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if (c) {
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a.send('QUIT');
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throw new Error(`B exited with ${c}`);
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}
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}));
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a.on('message', common.mustCall((m) => {
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assert.strictEqual(m.msg, 'READY');
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b.send({ msg: 'START', port: m.port });
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}));
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b.on('message', common.mustCall((m) => {
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assert.strictEqual(m, 'EADDRINUSE');
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a.send('QUIT');
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b.send('QUIT');
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}));
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} else if (id === 'one') {
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if (cluster.isMaster) return startWorker();
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const server = http.createServer(common.mustNotCall());
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server.listen(0, common.mustCall(() => {
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process.send({ msg: 'READY', port: server.address().port });
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}));
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process.on('message', common.mustCall((m) => {
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if (m === 'QUIT') process.exit();
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}));
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} else if (id === 'two') {
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if (cluster.isMaster) return startWorker();
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const server = http.createServer(common.mustNotCall());
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process.on('message', common.mustCall((m) => {
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if (m === 'QUIT') process.exit();
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assert.strictEqual(m.msg, 'START');
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server.listen(m.port, common.mustNotCall());
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server.on('error', common.mustCall((e) => {
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assert.strictEqual(e.code, 'EADDRINUSE');
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process.send(e.code);
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}));
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}, 2));
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} else {
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assert(0); // Bad command line argument
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}
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function startWorker() {
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const worker = cluster.fork();
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worker.on('exit', process.exit);
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worker.on('message', process.send.bind(process));
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process.on('message', worker.send.bind(worker));
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}
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