var exampleSocket = new WebSocket(“wss://www.example.com/socketserver”, “protocolOne”);<br />

// npm install –save ws<br /> const WebSocket = require(‘ws’);</p> <p>const ws = new WebSocket(‘ws://www.host.com/path’);</p> <p>ws.on(‘open’, function open() {<br /> ws.send(‘something’);<br /> });</p> <p>ws.on(‘message’, function incoming(data) {<br /> console.log(data);<br /> });

function listen(fn){<br /> fn=fn||console.log<br /> let property=Object.getOwnPropertyDescriptor<br /> (MessageEvent.prototype,”data”)<br /> const data=property.get<br /> function lookAtMessage(){ //to replace get function<br /> let socket=this.currentTarget instanceof WebSocket<br /> if(!socket){return data.call(this)}<br /> let msg=data.call(this)<br /> Object.defineProperty(this,”data”,{value:msg}) //anti-loop<br /> fn({data:msg,socket:this.currentTarget,event:this})<br /> return msg<br /> }<br /> property.get=lookAtMessage<br /> Object.defineProperty<br /> (MessageEvent.prototype,”data”,property)<br /> }<br /> listen( ({data})=>console.log(data) )

var exampleSocket = new WebSocket(“wss://www.example.com/socketserver”, [“protocolOne”, “protocolTwo”]);<br />