Livelocd

Livelocd is a lightweight Axum-compatible plugin for real-time location tracking via WebSockets and a JSON API. Easily drop it into any Rust backend to enable live geolocation dashboards, game user tracking, or delivery fleet monitoring.

✨ Features

📡 WebSocket support for sending real-time location updates
👂 Subscribe to all users or individual users' locations
🌐 REST API to query current locations
🧩 Designed as a plugin for Axum or Loco.rs apps
⚡ Built with minimal dependencies, powered by tokio, axum, and serde_json

📦 Installation

In your project’s Cargo.toml:

livelocd = { path = "../livelocd" } # or use Git/crates.io in the future

🔌 Usage

In your Axum project:

use axum::Router;
use livelocd::livelocd_routes;

#[tokio::main]
async fn main() {
    let app = Router::new().merge(livelocd_routes());
    axum::Server::bind(&"0.0.0.0:3000".parse().unwrap())
        .serve(app.into_make_service())
        .await
        .unwrap();
}

📡 WebSocket Endpoints

GET /ws/send-location — Send JSON with a user_id and any arbitrary fields (e.g., lat/lng)
GET /ws/subscribe — Receive real-time updates for all users
GET /ws/subscribe/:user_id — Subscribe to updates for a specific user

Example JSON payload:

{
  "user_id": "user123",
  "lat": 33.7489954,
  "lng": -84.3879824,
  "status": "moving"
}

🔍 REST API Endpoints

GET /api/users — Get current known location for all users
GET /api/users/:user_id — Get most recent location for a single user

🔒 Privacy & Security

You are responsible for securing the WebSocket and API endpoints (auth, rate limiting, etc.) based on your use case.

🚀 Use Cases

Live fleet or delivery tracking
Multiplayer game player positions
Dashboards for location-aware apps
IoT geolocation feeds

🧪 Testing Locally

Use websocat:

# Send location
websocat ws://localhost:3000/ws/send-location
{"user_id": "car-1", "lat": 40.7, "lng": -74.0}

# Subscribe to all
websocat ws://localhost:3000/ws/subscribe

livelocd 0.1.0