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<div align="center"> <div align="center">
<img height="120x" src="https://uploads-ssl.webflow.com/611580035ad59b20437eb024/616f97a42f5637c4517d0193_Logo%20(1)%20(1).png" /> <img height="120x" src="https://uploads-ssl.webflow.com/611580035ad59b20437eb024/616f97a42f5637c4517d0193_Logo%20(1)%20(1).png" />
<h1 style="margin-top:20px;">DLOB Serverfor Drift Protocol v2</h1> <h1 style="margin-top:20px;">DLOB Server for Drift Protocol v2</h1>
<p> <p>
<a href="https://docs.drift.trade/tutorial-keeper-bots"><img alt="Docs" src="https://img.shields.io/badge/docs-tutorials-blueviolet" /></a> <a href="https://docs.drift.trade/tutorial-keeper-bots"><img alt="Docs" src="https://img.shields.io/badge/docs-tutorials-blueviolet" /></a>
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</p> </p>
</div> </div>
# Run the example client # DLOB Server
Modify the variables at the top of `example/client.ts` to match your environment. This is the backend server that provides a REST API for the drift [DLOB](https://docs.drift.trade/about-v2/decentralized-orderbook).
```shell # Run the server
yarn run example
dlob orders count: 38 ## Setup
maxSlot from DLOB init orders: 165107666
Initialized DLOb from server
DLOB for market 0:
Asks
[13] limit 21
[12] limit 20.32
[11] limit 17.73
[10] limit 15.63
[9] limit 15.32
[8] limit 14.35
[7] limit 14.32
[6] limit 14.3
[5] limit 14.23
[4] limit 14.2
[3] vAMMNode 13.896583
[2] limit 13.896194
[1] triggerMarket 0
Bids
[0] limit 13.879792
[1] vAMMNode 13.771213
[2] limit 13.37
[3] limit 13
[4] limit 13
[5] limit 12.45
[6] limit 12
[7] limit 10.37
[8] limit 10
[9] limit 9.97
[10] limit 9.42
[11] limit 9
[12] limit 8.89
[13] limit 8
```
# Setting up First set the necessary environment variables:
## Setup Environment ```
```shell
cp .env.example .env cp .env.example .env
``` ```
Update values in `.env` accordingly ## Environment Configuration
* `ANCHOR_PRIVATE_KEY`: can be a number array (as in example), or a path to a `keypair.json` as generated by `solana-keygen`, it needs to be an initialized user in order to load `DriftClient`. To properly configure the DLOB server, set the following environment variables in your `.env` file:
* `ENV` should be a drift env: `devnet` or `mainnet-beta`
## Run | Variable | Description | Example Value |
|---------------------------|-----------------------------------------------------------|--------------------------------------------------------------------|
| `ENDPOINT` | The Solana RPC node http endpoint. | `https://your-private-rpc-node.com` |
| `WS_ENDPOINT` | The Solana RPC node websocket endpoint. | `wss://your-private-rpc-node.com` |
| `USE_WEBSOCKET` | Flag to enable WebSocket connection. | `true` |
| `USE_ORDER_SUBSCRIBER` | Flag to enable order subscriber DLOB source. | `true` |
| `DISABLE_GPA_REFRESH` | Flag to disable periodic refresh using `getProgramAccounts`. | `true` |
| `ENV` | The network environment the server is connecting to. | `mainnet-beta` |
| `PORT` | The port number the HTTP server listens on. | `6969` |
| `METRICS_PORT` | The port number for Prometheus metrics. | `9465` |
| `PRIVATE_KEY` | Path to the Solana private key file. | `/path/to/keypair.json` |
| `RATE_LIMIT_CALLS_PER_SECOND` | Maximum number of API calls per second. | `100` |
| `PERP_MARKETS_TO_LOAD` | Number of perpetual markets to load at startup. | `0` |
| `SPOT_MARKETS_TO_LOAD` | Number of spot markets to load at startup. | `5` |
| `REDIS_HOSTS` | (for websocket server) Redis host endpoint. | `localhost` |
| `REDIS_PASSWORDS` | (for websocket server) Redis password. | `password` |
| `REDIS_PORTS` | (for websocket server) Redis port. | `6379` |
| `WS_PORT` | (for websocket server) The port to run the websocket server on. | `3000` |
```shell
Note: multiple Redis hosts can be provided by providing a comma separated string.
## HTTP mode
The HTTP server as documented [here](https://drift-labs.github.io/v2-teacher/?python#orderbook-trades-dlob-server) can be run with, and by default accessible on `http://127.0.0.1:6969`:
```
yarn run dev yarn run dev
``` ```
## Websocket mode
The websocket server has 2 components, the `dlob-publisher` that takes frequent snapshots of the DLOB and publishes them to Redis, and `ws-manager` listens for new connections and sends the latest DLOB to ws clients, the two components communicate through Redis pub-sub.
To run the websocket server, a Redis cache is required, and the following environment variables must be set:
* `REDIS_HOSTS`
* `REDIS_PASSWORDS`
* `REDIS_PORTS`
In one terminal, run:
```
yarn run dlob-publisher
```
In a second terminal, run:
```
yarn run ws-manager
```
Then connect to the ws server at ws://127.0.0.1:3000
# Run the example client
Documentation for connecting to the dlob server are available [here](https://drift-labs.github.io/v2-teacher/?python#orderbook-trades-dlob-server)
TODO: complete client examples.