ocpp-sharp

An implementation of the Open Charge Point Protocol (OCPP) in C#.

Currently supported versions:

• Ocpp 1.6
• Ocpp 2.0.1

Table of contents

• ocpp-sharp
  • Table of contents
  • Dependencies
  • Features
  • What it isn't
  • Possible use cases
  • Running the examples
  • Basic server code
  • Motivation

Dependencies

• Newtonsoft.Json
• .NET 8

Features

• C# classes for all messages of the OCPP-Protocol.
• Easy to set up server and event system for processing messages.

What it isn't

It's not a ready-to-go backend server. You still have to implement what happens once an OCPP-Message has been received and how respond accordingly.

Possible use cases

• Automating certain ocpp-communication
• Emulating a charge point
• Implementation of a basic backend server for charge points

Running the examples

A minimalistic client and server example can be found under /ocpp-sharp.examples

Start the server:

cd ./ocpp-sharp.examples/server
dotnet run

And then a client:

cd ./ocpp-sharp.examples/client
dotnet run

The examples are preconfigured to connect to each other on localhost:8000
and exchange some example messages.

Basic server code

using OcppSharp.Server;
using OcppSharp.Protocol.Version16.RequestPayloads;
using OcppSharp.Protocol.Version16.ResponsePayloads;
using OcppSharp.Protocol;

namespace OcppApp;

public class Program
{
    public static void Main(string[] args)
    {
        // Set up a server to listen on port 80
        // Stations will be connecting to ws://<Hostname>/ocpp16/<Station ID>
        OcppSharpServer server = new("/ocpp16", ProtocolVersion.OCPP16, 80);

        server.RegisterHandler<BootNotificationRequest>((server, sender, request) =>
        {
            Console.WriteLine($"Received BootNotification! (Message ID = {request.FullRequest!.MessageId})");
            Console.WriteLine($"Vendor: {request.ChargePointVendor}");
            Console.WriteLine($"Serial Number: {request.ChargePointSerialNumber}");
            // ...

            // Always need to send a response
            return new BootNotificationResponse()
            {
                CurrentTime = DateTime.Now,
                Interval = 90 // Heartbeat Interval
            };
        });

        server.Start();
        Console.WriteLine("Server started!");
        Console.ReadLine();
        server.Stop();
    }
}

Motivation

This project was part of a private OCPP-Backend project. It was then split up into its own project here.