### Start Sockudo Server

Source: https://sockudo.io/

Command to start the Sockudo server with a specified configuration file. Shows example output indicating the listening port and readiness for traffic.

```bash
$ sockudo --config config.toml
[INFO] Listening on :6001
[INFO] Ready for websocket traffic
```

--------------------------------

### Docker Compose for Sockudo

Source: https://sockudo.io/

Use this Docker Compose configuration to start Sockudo on port 6001. It mounts a local config.toml file for customization.

```yaml
services:
  sockudo:
    image: ghcr.io/sockudo/sockudo:latest
    ports: ["6001:6001"]
    volumes: ["./config.toml:/app/config.toml"]
```

--------------------------------

### Initialize Pusher-JS Client

Source: https://sockudo.io/

Example of initializing the pusher-js library to connect to a Sockudo instance. Ensure wsHost and wsPort match your Sockudo server configuration.

```javascript
const pusher = new Pusher("app-key", {
  wsHost: "127.0.0.1",
  wsPort: 6001,
});
```

--------------------------------

### Apply Server-Side Tag Filtering

Source: https://sockudo.io/

Subscribe to a channel with a filter expression to receive only relevant messages. This example filters for 'trade' events with a price greater than or equal to 100.

```typescript
client.subscribe("market", {
  filter: Filter.and(
    Filter.eq("event", "trade"),
    Filter.gte("price", "100"),
  ),
});
```

--------------------------------

### Enable Delta Compression in Client

Source: https://sockudo.io/

Configure the Sockudo client to enable delta compression for a subscription. Specify the algorithm for efficient bandwidth usage.

```typescript
client.subscribe("ticker:btc", {
  delta: {
    enabled: true,
    algorithm: "xdelta3",
  },
});
```

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