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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'use strict';
23/*
24 * The purpose of this test is to make sure that when forking a process,
25 * sending a fd representing a UDP socket to the child and sending messages
26 * to this endpoint, these messages are distributed to the parent and the
27 * child process.
28 */
29
30const common = require('../common');
31if (common.isWindows)
32  common.skip('Sending dgram sockets to child processes is not supported');
33
34const dgram = require('dgram');
35const fork = require('child_process').fork;
36const assert = require('assert');
37
38if (process.argv[2] === 'child') {
39  let childServer;
40
41  process.once('message', (msg, clusterServer) => {
42    childServer = clusterServer;
43
44    childServer.once('message', () => {
45      process.send('gotMessage');
46      childServer.close();
47    });
48
49    process.send('handleReceived');
50  });
51
52} else {
53  const parentServer = dgram.createSocket('udp4');
54  const client = dgram.createSocket('udp4');
55  const child = fork(__filename, ['child']);
56
57  const msg = Buffer.from('Some bytes');
58
59  let childGotMessage = false;
60  let parentGotMessage = false;
61
62  parentServer.once('message', (msg, rinfo) => {
63    parentGotMessage = true;
64    parentServer.close();
65  });
66
67  parentServer.on('listening', () => {
68    child.send('server', parentServer);
69
70    child.on('message', (msg) => {
71      if (msg === 'gotMessage') {
72        childGotMessage = true;
73      } else if (msg === 'handleReceived') {
74        sendMessages();
75      }
76    });
77  });
78
79  function sendMessages() {
80    const serverPort = parentServer.address().port;
81
82    const timer = setInterval(() => {
83      /*
84       * Both the parent and the child got at least one message,
85       * test passed, clean up everything.
86       */
87      if (parentGotMessage && childGotMessage) {
88        clearInterval(timer);
89        client.close();
90      } else {
91        client.send(
92          msg,
93          0,
94          msg.length,
95          serverPort,
96          '127.0.0.1',
97          (err) => {
98            assert.ifError(err);
99          }
100        );
101      }
102    }, 1);
103  }
104
105  parentServer.bind(0, '127.0.0.1');
106
107  process.once('exit', () => {
108    assert(parentGotMessage);
109    assert(childGotMessage);
110  });
111}
112