OCPP-RS

OCPP-RS is a Rust library for implementing the Open Charge Point Protocol (OCPP) in Rust.

it currently supports OCPP 1.6.

Documentation

• Full implementation of OCPP 1.6 Protocol
• Currently most feature complete implementation of OCPP 1.6 in rust
• Batteries included, check packet parsing(to_message) serialization(from_message)
• Fuzzed tested (please read the comment on the call_result fuzzing)
• Inspired by a python ocpp library

Usage

In Cargo.toml, add the following dependency:

[dependencies]
ocpp-rs = "0.1"

Particularities

Since the original OCPP 1.6 protocol does not contain a type field for CallResult, when parsing CallResultlt, you need to handle Special cases where JSON payloads are ambiguous, like empty objects like: {}, these might get serialized as a EmptyResponse instead of the variant you are waiting for like GetConfiguration.

Look at this file to see how to properly handle CallResults: valid_call_result.rs

Example

Receiving a payload from a client:

use ocpp_rs::v16::parse::{self, Message};
use ocpp_rs::v16::call::{Action, Call};

// Example incoming message
let incoming_text = "[2, \"19223201\", \"BootNotification\", { \"chargePointVendor\": \"VendorX\", \"chargePointModel\": \"SingleSocketCharger\" }]";
let incoming_message = parse::to_message(incoming_text);
if let Ok(Message::Call(call)) = incoming_message {
    match call.payload {
        Action::BootNotification(boot_notification) => {
           // Do something with boot_notification
        },
        _ => {
          // Handle other actions
        }
   }
}

Sending a payload to a client:

use ocpp_rs::v16::call::StartTransaction;
use ocpp_rs::v16::call_result::{self, CallResult, ResultPayload};
use ocpp_rs::v16::data_types::IdTagInfo;
use ocpp_rs::v16::enums::ChargePointStatus;
use ocpp_rs::v16::parse::Message;

let response = Message::CallResult(CallResult::new(
    "1234".to_string(),
    ResultPayload::StartTransaction(call_result::StartTransaction {
        transaction_id: 0,
        id_tag_info: IdTagInfo {
            status: ocpp_rs::v16::enums::GenericStatus::Accepted,
            expiry_date: None,
            parent_id_tag: None,
        },
    }),
));