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1
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"use strict"; |
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2
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3
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const WebSocket = require("ws"); |
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4
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5
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const handleProtocols = (protocols /*, request */ ) => { |
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6
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console.info(`Incoming protocol requests '${protocols}'.`); |
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7
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for (var i = 0; i < protocols.length; i++) { |
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8
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2 |
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if (protocols[i] === "text") { |
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9
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return "text"; |
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10
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2 |
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} else if (protocols[i] === "json") { |
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11
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return "json"; |
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12
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} |
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13
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} |
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14
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return false; |
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15
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}; |
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16
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17
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let makeWss = (server) => { |
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18
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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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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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let socket = (server) => { |
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28
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29
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const wss = makeWss(server); |
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30
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31
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wss.broadcastExcept = (ws, data) => { |
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32
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let clients = 0; |
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33
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34
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wss.clients.forEach((client) => { |
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35
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4 |
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if (client !== ws && client.readyState === WebSocket.OPEN) { |
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36
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clients++; |
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37
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2 |
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if (ws.protocol === "json") { |
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38
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let msg = { |
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39
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data: data |
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40
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}; |
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41
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42
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client.send(JSON.stringify(msg)); |
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43
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} else { |
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44
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client.send(data); |
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45
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} |
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46
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} |
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47
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}); |
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48
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console.info(`Broadcasted data to ${clients} (${wss.clients.size}) clients.`); |
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49
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}; |
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50
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51
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52
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53
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// Setup for websocket requests. |
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54
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// Docs: https://github.com/websockets/ws/blob/master/doc/ws.md |
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55
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wss.on("connection", (ws /*, req*/ ) => { |
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56
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console.info("Connection received. Adding client."); |
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57
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58
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// wss.broadcastExcept(ws, `New client connected (${wss.clients.size}).`); |
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59
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60
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ws.on("message", (message) => { |
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61
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// console.log("Received: %s", message); |
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62
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wss.broadcastExcept(ws, message); |
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63
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}); |
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64
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|
65
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ws.on("error", (error) => { |
|
66
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console.error(`Server error: ${error}`); |
|
67
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}); |
|
68
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|
69
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ws.on("close", (code, reason) => { |
|
70
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console.info(`Closing connection: ${code} ${reason}`); |
|
71
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// wss.broadcastExcept(ws, `Client disconnected (${wss.clients.size}).`); |
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72
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}); |
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73
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}); |
|
74
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}; |
|
75
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|
76
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module.exports = { |
|
77
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socket: socket |
|
78
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}; |
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79
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MagnusGreiff /
server
