Orderbook + DLOB websocket

The DLOB server powers the UI orderbook and trades feed. It exposes a websocket interface and uses a small set of channels.

Step 1: Connect to the DLOB websocket

Base URL:

• https://dlob.drift.trade

You’ll connect to its websocket endpoint (e.g. wss://dlob.drift.trade/ws).

Step 2: Subscribe to channels

Supported channels include:

• orderbook
• orderbook_indicative
• trades
• heartbeat

Example subscription message (perp orderbook):

{
  "type": "subscribe",
  "channel": "orderbook",
  "marketType": "perp",
  "market": "SOL-PERP",
  "grouping": 10
}

Example subscription message (trades):

{
  "type": "subscribe",
  "channel": "trades",
  "marketType": "perp",
  "market": "SOL-PERP"
}

Step 3: Handle indicative quotes

Use orderbook_indicative to surface indicative quotes for routing and discovery. It uses the same message shape as orderbook.

Step 4: Map symbols consistently

Market symbols match UI markets (e.g. SOL-PERP). Keep your market list in sync with the SDK’s market metadata to avoid mismatches.