1// Copyright Joyent, Inc. and other Node contributors.
2//
3// Permission is hereby granted, free of charge, to any person obtaining a
4// copy of this software and associated documentation files (the
5// "Software"), to deal in the Software without restriction, including
6// without limitation the rights to use, copy, modify, merge, publish,
7// distribute, sublicense, and/or sell copies of the Software, and to permit
8// persons to whom the Software is furnished to do so, subject to the
9// following conditions:
10//
11// The above copyright notice and this permission notice shall be included
12// in all copies or substantial portions of the Software.
13//
14// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
16// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
17// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
18// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
19// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
20// USE OR OTHER DEALINGS IN THE SOFTWARE.
21
22// Flags: --expose-internals
23'use strict';
24// Ensure that if a dgram socket is closed before the DNS lookup completes, it
25// won't crash.
26
27const common = require('../common');
28const assert = require('assert');
29const dgram = require('dgram');
30const { kStateSymbol } = require('internal/dgram');
31
32const buf = Buffer.alloc(1024, 42);
33
34let socket = dgram.createSocket('udp4');
35const { handle } = socket[kStateSymbol];
36
37// Get a random port for send
38const portGetter = dgram.createSocket('udp4')
39  .bind(0, 'localhost', common.mustCall(() => {
40    socket.send(buf, 0, buf.length,
41                portGetter.address().port,
42                portGetter.address().address);
43
44    assert.strictEqual(socket.close(common.mustCall()), socket);
45    socket.on('close', common.mustCall());
46    socket = null;
47
48    // Verify that accessing handle after closure doesn't throw
49    setImmediate(function() {
50      setImmediate(function() {
51        console.log('Handle fd is: ', handle.fd);
52      });
53    });
54
55    portGetter.close();
56  }));
57