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