This repository has been archived by the owner on Apr 22, 2023. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 7.3k
/
test-dgram-multicast.js
87 lines (69 loc) · 2.04 KB
/
test-dgram-multicast.js
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
common = require("../common");
assert = common.assert
var dgram = require("dgram"),
util = require('util'),
assert = require('assert'),
Buffer = require("buffer").Buffer;
var LOCAL_BROADCAST_HOST = '224.0.0.1';
var sendMessages = [
new Buffer("First message to send"),
new Buffer("Second message to send"),
new Buffer("Third message to send"),
new Buffer("Fourth message to send")
];
var listenSockets = [];
var sendSocket = dgram.createSocket('udp4')
sendSocket.on('close', function () {
console.error('sendSocket closed');
})
sendSocket.setBroadcast(true);
var i = 0;
sendSocket.sendNext = function () {
var buf = sendMessages[i++];
if (!buf) {
try { sendSocket.close(); }catch(e){}
return;
}
sendSocket.send(buf, 0, buf.length, common.PORT, LOCAL_BROADCAST_HOST, function (err) {
if (err) throw err;
console.error('sent %s to %s', util.inspect(buf.toString()),
LOCAL_BROADCAST_HOST+common.PORT);
process.nextTick(sendSocket.sendNext);
});
};
listener_count = 0;
function mkListener() {
var receivedMessages = [];
var listenSocket = dgram.createSocket('udp4')
listenSocket.on('message', function(buf, rinfo) {
console.error('received %s from %j', util.inspect(buf.toString()), rinfo);
receivedMessages.push(buf);
if (receivedMessages.length == sendMessages.length) {
listenSocket.close();
}
})
listenSocket.on('close', function () {
console.error('listenSocket closed -- checking received messages');
var count = 0;
receivedMessages.forEach(function(buf){
for (var i=0; i<sendMessages.length; ++i) {
if (buf.toString() === sendMessages[i].toString()) {
count++;
break;
}
}
});
console.error("count %d", count);
//assert.strictEqual(count, sendMessages.length);
})
listenSocket.on('listening', function() {
listenSockets.push(listenSocket);
if (listenSockets.length == 3) {
sendSocket.sendNext();
}
})
listenSocket.bind(common.PORT);
}
mkListener();
mkListener();
mkListener();