106 lines
3.6 KiB
JavaScript
106 lines
3.6 KiB
JavaScript
'use strict';
|
|
// 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.
|
|
|
|
const common = require('../common');
|
|
const assert = require('assert');
|
|
const cluster = require('cluster');
|
|
const dgram = require('dgram');
|
|
|
|
// Without an explicit bind, send() causes an implicit bind, which always
|
|
// generate a unique per-socket ephemeral port. An explicit bind to a port
|
|
// number causes all sockets bound to that number to share a port.
|
|
//
|
|
// The 2 workers that call bind() will share a port, the two workers that do
|
|
// not will not share a port, so master will see 3 unique source ports.
|
|
|
|
// Note that on Windows, clustered dgram is not supported. Since explicit
|
|
// binding causes the dgram to be clustered, don't fork the workers that bind.
|
|
// This is a useful test, still, because it demonstrates that by avoiding
|
|
// clustering, client (ephemeral, implicitly bound) dgram sockets become
|
|
// supported while using cluster, though servers still cause the master to error
|
|
// with ENOTSUP.
|
|
|
|
if (cluster.isMaster) {
|
|
let messages = 0;
|
|
const ports = {};
|
|
const pids = [];
|
|
|
|
const target = dgram.createSocket('udp4');
|
|
|
|
const done = common.mustCall(function() {
|
|
cluster.disconnect();
|
|
target.close();
|
|
});
|
|
|
|
target.on('message', function(buf, rinfo) {
|
|
if (pids.includes(buf.toString()))
|
|
return;
|
|
pids.push(buf.toString());
|
|
messages++;
|
|
ports[rinfo.port] = true;
|
|
|
|
if (common.isWindows && messages === 2) {
|
|
assert.strictEqual(Object.keys(ports).length, 2);
|
|
done();
|
|
}
|
|
|
|
if (!common.isWindows && messages === 4) {
|
|
assert.strictEqual(Object.keys(ports).length, 3);
|
|
done();
|
|
}
|
|
});
|
|
|
|
target.on('listening', function() {
|
|
cluster.fork({ PORT: target.address().port });
|
|
cluster.fork({ PORT: target.address().port });
|
|
if (!common.isWindows) {
|
|
cluster.fork({ BOUND: 'y', PORT: target.address().port });
|
|
cluster.fork({ BOUND: 'y', PORT: target.address().port });
|
|
}
|
|
});
|
|
|
|
target.bind({ port: 0, exclusive: true });
|
|
|
|
return;
|
|
}
|
|
|
|
const source = dgram.createSocket('udp4');
|
|
|
|
source.on('close', function() {
|
|
clearInterval(interval);
|
|
});
|
|
|
|
if (process.env.BOUND === 'y') {
|
|
source.bind(0);
|
|
} else {
|
|
// Cluster doesn't know about exclusive sockets, so it won't close them. This
|
|
// is expected, its the same situation for timers, outgoing tcp connections,
|
|
// etc, which also keep workers alive after disconnect was requested.
|
|
source.unref();
|
|
}
|
|
|
|
assert(process.env.PORT);
|
|
const buf = Buffer.from(process.pid.toString());
|
|
const interval = setInterval(() => {
|
|
source.send(buf, process.env.PORT, '127.0.0.1');
|
|
}, 1).unref();
|