SimpleOcppServer

A lightweight OCPP 1.6 Central System implementation built with .NET 8. It communicates with EV chargepoints over WebSockets and exposes a REST API for managing charging sessions, profiles, and configuration.

The solution consists of three projects:

• WebSocket server on port 8080 accepting chargepoint connections at ws://host:8080/ocpp/{chargepointId}
• OCPP 1.6 message handlers — Authorize, BootNotification, Heartbeat, MeterValues, StartTransaction, StopTransaction, StatusNotification, ChargingProfile, CompositeSchedule, Configuration
• REST API for external control and monitoring
• MQTT integration for publishing events
• MongoDB for persisting transactions and status
• MediatR for in-process messaging between components

• .NET 8 SDK
• MongoDB instance
• MQTT broker (optional)

Settings are in SimpleOcppServer/appsettings.json and can be overridden with environment variables:

{
  "MqttSettings": {
    "MqttIp": "192.168.1.5"
  },
  "AuthSettings": {
    "AllowedIdTags": "F6C0D248"
  }
}

cd SimpleOcppServer
dotnet run

The WebSocket server will start listening on http://+:8080/ocpp/.

Build and run with Docker:

docker build -t simpleocppserver .
docker run -p 8080:8080 simpleocppserver

Or use Docker Buildx Bake:

docker buildx bake

A simple WebSocket test client is included:

cd SimpleOcppClient
dotnet run

It connects to ws://localhost:8080/ocpp/WS-1337 and sends sample OCPP messages.