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| Current File : //proc/self/root/home/ubuntu/node-v16.18.1/test/parallel/test-child-process-send-keep-open.js |
'use strict';
const common = require('../common');
const assert = require('assert');
const cp = require('child_process');
const net = require('net');
if (process.argv[2] !== 'child') {
// The parent process forks a child process, starts a TCP server, and connects
// to the server. The accepted connection is passed to the child process,
// where the socket is written. Then, the child signals the parent process to
// write to the same socket.
let result = '';
process.on('exit', () => {
assert.strictEqual(result, 'childparent');
});
const child = cp.fork(__filename, ['child']);
// Verify that the child exits successfully
child.on('exit', common.mustCall((exitCode, signalCode) => {
assert.strictEqual(exitCode, 0);
assert.strictEqual(signalCode, null);
}));
const server = net.createServer((socket) => {
child.on('message', common.mustCall((msg) => {
assert.strictEqual(msg, 'child_done');
socket.end('parent', () => {
server.close();
child.disconnect();
});
}));
child.send('socket', socket, { keepOpen: true }, common.mustSucceed());
});
server.listen(0, () => {
const socket = net.connect(server.address().port, common.localhostIPv4);
socket.setEncoding('utf8');
socket.on('data', (data) => result += data);
});
} else {
// The child process receives the socket from the parent, writes data to
// the socket, then signals the parent process to write
process.on('message', common.mustCall((msg, socket) => {
assert.strictEqual(msg, 'socket');
socket.write('child', () => process.send('child_done'));
}));
}
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