serum-vial & Node.js sample

const WebSocket = require('ws') const ws = new WebSocket('wss://serum-vial.tardis.dev/v1/ws') ws.onmessage = (message) => { console.log(JSON.parse(message.data)) } ws.onopen = () => { // subscribe both to L2 and L3 real-time channels const subscribeL2 = { op: 'subscribe', channel: 'level2', markets: ['BTC/USDC'] } const subscribeL3 = { op: 'subscribe', channel: 'level3', markets: ['BTC/USDC'] } ws.send(JSON.stringify(subscribeL2)) ws.send(JSON.stringify(subscribeL3)) }