BitMart TypeScript SDK example: ws-futures-public.ts

BitMart WebSocket websocket futures public example for the Siebly BitMart SDK, with TypeScript source for exchange REST API and WebSocket integration, setup, and production SDK docs.

What This Example Covers

BitMart WebSocket stream example in TypeScript.
Uses the Siebly BitMart SDK package bitmart-api instead of hand-written WebSocket plumbing.
Source path: Bitmart/Websocket/ws-futures-public.ts.
Example category: WebSocket.
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.

Example Path

Bitmart/Websocket/ws-futures-public.ts

Source Link

Repository source: https://github.com/sieblyio/crypto-api-examples/blob/master/examples/Bitmart/Websocket/ws-futures-public.ts

Related SDK Docs

Example Source

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 reconenct
  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();