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1
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"use strict"; |
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2
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|
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3
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1 |
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const WebSocket = require("ws"); |
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4
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5
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1 |
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const handleProtocols = (protocols /*, request */ ) => { |
|
6
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console.info(`Incoming protocol requests '${protocols}'.`); |
|
7
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for (var i = 0; i < protocols.length; i++) { |
|
8
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2 |
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if (protocols[i] === "text") { |
|
9
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return "text"; |
|
10
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2 |
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} else if (protocols[i] === "json") { |
|
11
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return "json"; |
|
12
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} |
|
13
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} |
|
14
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return false; |
|
15
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}; |
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16
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17
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1 |
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let makeWss = (server) => { |
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18
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1 |
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const wss = new WebSocket.Server({ |
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19
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server: server, |
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20
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clientTracking: true, // keep track on connected clients |
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21
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handleProtocols: handleProtocols |
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22
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}); |
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23
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24
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1 |
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return wss; |
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25
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}; |
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26
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|
27
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1 |
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let broadcastExcept = (wss, ws, data) => { |
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28
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let clients = 0; |
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29
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|
30
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wss.clients.forEach((client) => { |
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31
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4 |
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if (client !== ws && client.readyState === WebSocket.OPEN) { |
|
32
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clients++; |
|
33
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2 |
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if (ws.protocol === "json") { |
|
34
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let msg = { |
|
35
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data: data |
|
36
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}; |
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37
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|
38
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client.send(JSON.stringify(msg)); |
|
39
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} else { |
|
40
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client.send(data); |
|
41
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} |
|
42
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} |
|
43
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}); |
|
44
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console.info(`Broadcasted data to ${clients} (${wss.clients.size}) clients.`); |
|
45
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}; |
|
46
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|
|
47
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1 |
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let socket = (server) => { |
|
48
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1 |
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const wss = makeWss(server); |
|
49
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|
50
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51
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1 |
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wss.on("connection", (ws /*, req*/ ) => { |
|
52
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console.info("Connection received. Adding client."); |
|
53
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|
|
54
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ws.on("message", (message) => { |
|
55
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broadcastExcept(wss, ws, message); |
|
56
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}); |
|
57
|
|
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|
|
58
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ws.on("error", (error) => { |
|
59
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console.error(`Server error: ${error}`); |
|
60
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}); |
|
61
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|
62
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ws.on("close", (code, reason) => { |
|
63
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console.info(`Closing connection: ${code} ${reason}`); |
|
64
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}); |
|
65
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|
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}); |
|
66
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|
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}; |
|
67
|
|
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|
|
68
|
1 |
|
module.exports = { |
|
69
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|
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socket: socket |
|
70
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|
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}; |
|
71
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MagnusGreiff /
server
