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Get Real-Time Ticker Prices via WebSocket

This WebSocket API provides real-time updates for tickers on Nami Exchange.

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Connection Information

  • Base URL: wss://nfp-gateway.nami.exchange

  • Path: /ws/public

  • Transport: WebSocket

  • Data Format: JSON

  • Reconnection: Enabled with exponential backoff (recommended on the client side)

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Connection

const WS_URL = "wss://nfp-gateway.nami.exchange/ws/public?t=" + Date.now();
let socket;

function connect() {
  socket = new WebSocket(WS_URL);

  socket.onopen = () => {
    console.log("Connected to the WebSocket server");

    // Subscribe to ticker updates for BTCUSDT
    socket.send(JSON.stringify({
      event: "subscribe",
      data: {
        channel: "nfp:ticker",
        params: ["btcusdt"]
      }
    }));
  };

  socket.onmessage = (event) => {
    const data = JSON.parse(event.data);
    console.log("Received data:", data);
  };

  socket.onclose = () => {
    console.log("Connection closed, attempting to reconnect...");
    setTimeout(connect, 300);
  };

  socket.onerror = () => {
    socket.close();
  };
}

connect();

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Events

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1. Connection

  • Event: open

  • Description: Triggered when the client successfully connects to the WebSocket server.

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2. Subscribe to Ticker

  • Event: subscribe

  • Description: Subscribes to real-time ticker updates for a specific trading pair.

  • Payload: JSON object

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3. Receive Ticker Updates

  • Event: nfp:ticker

  • Description: Provides real-time ticker updates for the subscribed trading pair.

  • Payload: JSON object containing price and market metrics.

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Disconnection & Reconnection

  • The WebSocket client automatically attempts to reconnect using exponential backoff.

  • If the connection is interrupted:

    • Reconnect indefinitely

    • After reconnecting, the client must resubscribe to the ticker channel

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Notes

  • Subscribed symbols should be provided in lowercase (btcusdt), while the payload returns the symbol in uppercase (BTCUSDT).

  • The ticker stream is used for:

    • Real-time price display

    • Funding and mark price calculations

    • Data crawling for CoinGecko

  • Clients should throttle UI rendering due to the high frequency of updates.

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