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nodejs/test/parallel/test-dgram-send-default-host.js
Brian White 2bc7841d0f
test: use random ports where possible
This helps to prevent issues where a failed test can keep a bound
socket open long enough to cause other tests to fail with EADDRINUSE
because the same port number is used.

PR-URL: https://github.com/nodejs/node/pull/7045
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Rod Vagg <rod@vagg.org>
2016-06-10 22:30:55 -04:00

38 lines
978 B
JavaScript

'use strict';
const common = require('../common');
const assert = require('assert');
const dgram = require('dgram');
const client = dgram.createSocket('udp4');
const toSend = [Buffer.alloc(256, 'x'),
Buffer.alloc(256, 'y'),
Buffer.alloc(256, 'z'),
'hello'];
const received = [];
client.on('listening', common.mustCall(() => {
const port = client.address().port;
client.send(toSend[0], 0, toSend[0].length, port);
client.send(toSend[1], port);
client.send([toSend[2]], port);
client.send(toSend[3], 0, toSend[3].length, port);
}));
client.on('message', common.mustCall((buf, info) => {
received.push(buf.toString());
if (received.length === toSend.length) {
// The replies may arrive out of order -> sort them before checking.
received.sort();
const expected = toSend.map(String).sort();
assert.deepStrictEqual(received, expected);
client.close();
}
}, toSend.length));
client.bind(0);