Binance offers Web Socket Streams with several functions such as Aggregate Streams, Trade Streams, Kline/Candlestick Streams, etc. that you can see here https://github.com/binance/binance-spot-api-docs/blob/master/web-socket-streams.md
I'm looking to get the current price & last 24h % change of my selected coins and I can't understand how do I manage to get this information. The prices must be in real time, the 24h % change can be called every 60 seconds or something.
I'm currently using CoinCap https://docs.coincap.io/ and it's pretty easy:
- To get the 24h % I call the endpoint
https://api.coincap.io/v2/assets?ids=bitcoin,ethereum - To get the prices in real time I call the endpoint
wss://ws.coincap.io/prices?assets=bitcoin,ethereum
The problem with CoinCap is that I can't filter the prices with the exchange that I want, which in this case is Binance. So I keep getting prices that do not match the Binance.
var socket = new WebSocket('wss://ws.coincap.io/prices?assets=bitcoin,ethereum');
socket.addEventListener('message', function (event)
{
// parse & show the data
});
For example, the Kline/Candlestick Streams says the following:
The Kline/Candlestick Stream push updates to the current klines/candlestick every second
And returns the following data:
{
"e": "kline", // Event type
"E": 123456789, // Event time
"s": "BNBBTC", // Symbol
"k": {
"t": 123400000, // Kline start time
"T": 123460000, // Kline close time
"s": "BNBBTC", // Symbol
"i": "1m", // Interval
"f": 100, // First trade ID
"L": 200, // Last trade ID
"o": "0.0010", // Open price
"c": "0.0020", // Close price
"h": "0.0025", // High price
"l": "0.0015", // Low price
"v": "1000", // Base asset volume
"n": 100, // Number of trades
"x": false, // Is this kline closed?
"q": "1.0000", // Quote asset volume
"V": "500", // Taker buy base asset volume
"Q": "0.500", // Taker buy quote asset volume
"B": "123456" // Ignore
}
}
Based on this what is the current price that matches the value seen in the Binance Platform https://www.binance.com/en/markets?