About the websocket data for candle sticks

vvardhan744 · April 14, 2020, 7:30am

When I am trying to get the websocket data for the all pairs in binance using websocket most of the pairs are missing
the code i am using is `const binance = require(‘node-binance-api’)().options({
APIKEY: APIKEY,
APISECRET: APISECRET,
useServerTime: true, // If you get timestamp errors, synchronize to server time at startup
recvWindow: 100000
});
binance.websockets.candlesticks(pairs, “1m”,(candlesticks)=> {
let { e: eventType, E: eventTime, s: symbol, k: ticks } = candlesticks;
let { o: open, h: high, l: low, c: close, v: volume, n: trades, i: interval, x: isFinal, q: quoteVolume, V: buyVolume, Q: quoteBuyVolume } = ticks;

`

jaggedsoft · June 4, 2020, 10:25pm

Hi, creator of node-binance-api here.
To connect to all websocket endpoints at once you can follow this example here:

github.com

jaggedsoft/node-binance-api/blob/master/examples/subscribe-to-all.js

const Binance = require('node-binance-api');
const binance = new Binance().options('options.json');
global.ticker = {};

// Get all symbols
binance.prevDay(false, (error, prevDay) => {
    if ( error ) return console.log(error.body);
    let markets = [];
    for ( let obj of prevDay ) {
        let symbol = obj.symbol;

        // Filter BTC & USDT markets only (example)
        if ( !symbol.endsWith('BTC') && !symbol.endsWith('USDT') ) continue;

        console.log(`${symbol} price: ${obj.lastPrice} volume: ${obj.volume} change: ${obj.priceChangePercent}%`);
        global.ticker[symbol] = obj.lastPrice;
        markets.push(symbol);
    }

    // Subscribe to trades endpoint for all markets

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Please note that this won’t work using the depth() or the candlesticks() functions because it needs to download the chart history from binance in addition to connecting to the websocket, meaning it’s not safe to connect to more than a few of these at a time without some sort of delay or timer. You’re only allowed 1200 request weight per minute.

Ciao

dino · April 15, 2020, 12:05am

the code itself looks fine, however please try to reduce the pairs and see if you can get the information.