const WebSocket = require('ws'); const WS_SERVER_PORT = process.env.WS_SERVER_PORT || 8191; const ws = new WebSocket(`ws://localhost:${WS_SERVER_PORT}`); const ws2 = new WebSocket(`ws://localhost:${WS_SERVER_PORT}`); ws.on('open', () => { console.log('WebSocket connection established'); ws.send("client:1"); }); ws.on('message', (data) => { console.log(String(data)); }); ws2.on('open', () => { console.log('WebSocket connection established'); ws.send("center:0"); }); ws2.on('message', (data) => { console.log(String(data)); });