# MeshVPN Coordinator Server

The Coordinator Server is the central brain of the MeshVPN network. It handles node registration, peer signaling, and provides STUN services for NAT traversal.

## Features
- **Integrated STUN Server**: Helps clients discover their public endpoints.
- **Node Coordination**: Manages public keys and virtual IP assignments.
- **Signaling**: Facilitates UDP hole punching between peers.
- **Web Dashboard**: (Coming soon) Visualization of the mesh network.

## Installation

### Prerequisites
- [Go](https://go.dev/dl/) (1.21+)
- [Redis](https://redis.io/download) (For real-time node state)
- [PostgreSQL](https://www.postgresql.org/download/) (For identity and ACLs)

### Setup
1. **Clone the repository**
2. **Install dependencies**:
   ```bash
   go mod tidy
   ```
3. **Configure Environment**:
   Create a `.env` file with:
   ```env
   REDIS_ADDR=localhost:6379
   POSTGRES_URL=postgres://user:pass@localhost:5432/meshvpn
   STUN_PORT=3478
   COORD_PORT=50051
   ```
4. **Run the server**:
   ```bash
   go run main.go
   ```

## API Endpoints
- **STUN**: UDP port 3478
- **gRPC Coordinator**: TCP port 50051