1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
'use strict';
var common = require('../common');
var assert = require('assert');
var http = require('http');
var net = require('net');
var PORT = common.PORT;
if (common.isWindows) {
common.skip('This test is disabled on windows.');
return;
}
switch (process.argv[2]) {
case 'child': return child();
}
var ok;
process.on('exit', function() {
assert.ok(ok);
});
// WARNING: This is an example of listening on some arbitrary FD number
// that has already been bound elsewhere in advance. However, binding
// server handles to stdio fd's is NOT a good or reliable way to do
// concurrency in HTTP servers! Use the cluster module, or if you want
// a more low-level approach, use child process IPC manually.
test(function(child) {
// now make sure that we can request to the child, then kill it.
http.get({
server: 'localhost',
port: PORT,
path: '/',
}).on('response', function(res) {
var s = '';
res.on('data', function(c) {
s += c.toString();
});
res.on('end', function() {
child.kill();
child.on('exit', function() {
assert.equal(s, 'hello from child\n');
assert.equal(res.statusCode, 200);
console.log('ok');
ok = true;
});
});
});
});
function child() {
// Prevent outliving the parent process in case it is terminated before
// killing this child process.
process.on('disconnect', function() {
console.error('exit on disconnect');
process.exit(0);
});
// start a server on fd=3
http.createServer(function(req, res) {
console.error('request on child');
console.error('%s %s', req.method, req.url, req.headers);
res.end('hello from child\n');
}).listen({ fd: 3 }, function() {
console.error('child listening on fd=3');
process.send('listening');
});
}
function test(cb) {
var server = net.createServer(function(conn) {
console.error('connection on parent');
conn.end('hello from parent\n');
}).listen(PORT, function() {
console.error('server listening on %d', PORT);
var spawn = require('child_process').spawn;
var child = spawn(process.execPath, [__filename, 'child'], {
stdio: [ 0, 1, 2, server._handle, 'ipc' ]
});
console.log('%j\n', { pid: child.pid });
// Now close the parent, so that the child is the only thing
// referencing that handle. Note that connections will still
// be accepted, because the child has the fd open.
server.close();
child.on('message', function(msg) {
if (msg === 'listening') {
cb(child);
}
});
});
}
|
