bfx-perf-books-v2.1

bfx-perf-books-21.js

// INSTALL
// requirements: node.js interpreter
// run: npm install ws

// Subscribe to BTCUSD book on Bitfinex's WebSocket v2

const WS = require('ws')
const w = new WS("wss://api-pub.bitfinex.com/ws/2")

w.onmessage = function(msg) { console.log(Date.now(), msg.data) }
w.onopen = function() {
  w.send(JSON.stringify({ "event": "subscribe", "channel": "book", "symbol": "tBTCUSD", "prec": "R0", "len": 100 }))
}