BitMart JavaScript SDK example: ws-futures-public.ts
BitMart websocket futures public JavaScript example for the Siebly BitMart SDK, covering exchange REST API and WebSocket integration, setup, and production SDK docs.
We use environment variables in our examples for API keys. It is your responsibility to manage and secure your keys appropriately.
examples/Bitmart/Websocket/ws-futures-public.ts
What this example covers
- BitMart WebSocket stream JavaScript example.
- Uses the Siebly BitMart SDK package
bitmart-apiinstead of hand-written WebSocket plumbing. - Source path:
Bitmart/Websocket/ws-futures-public.ts. - Imports SDK symbols including
WebsocketClient. - Calls SDK methods such as
on(),subscribe().
How to use this example
- Start here for the specific request or stream pattern, then check the matching SDK guide for install, credentials, and operational notes.
- For WebSocket examples, keep reconnect, resubscribe, heartbeat, and event-handler behavior explicit in your service.
- Open the repository source when you need the latest committed version: GitHub source file.
import { WebsocketClient } from 'bitmart-api'; async function start() { const client = new WebsocketClient(); client.on('open', (data) => { console.log('connected ', data?.wsKey); }); // Data received client.on('update', (data) => { console.info('data received: ', JSON.stringify(data)); }); // Something happened, attempting to reconnect client.on('reconnect', (data) => { console.log('reconnect: ', data); }); // Reconnect successful client.on('reconnected', (data) => { console.log('reconnected: ', data); }); // Connection closed. If unexpected, expect reconnect -> reconnected. client.on('close', (data) => { console.error('close: ', data); }); // Reply to a request, e.g. "subscribe"/"unsubscribe"/"authenticate" client.on('response', (data) => { console.info('response: ', data); }); client.on('exception', (data) => { console.error('exception: ', data); }); try { // Ticker Channel // client.subscribe('futures/ticker', 'futures'); // Depth Channel // client.subscribe('futures/depth20:BTCUSDT', 'futures'); // Trade Channel // client.subscribe('futures/trade:BTCUSDT', 'futures'); // KlineBin Channel // client.subscribe('futures/klineBin1m:BTCUSDT', 'futures'); // Or have multiple topics in one array: client.subscribe( [ 'futures/klineBin1m:BTCUSDT', 'futures/klineBin1m:ETHUSDT', 'futures/klineBin1m:XRPUSDT', 'futures/klineBin1m:BMXUSDT', 'futures/klineBin1m:SOLUSDT', ], 'futures', ); } catch (e) { console.error('Req error: ', e); }} start();