OCPP WebSocket App

Application

• Simple app menu (command line app using cin/cout is enough)
• After app starts it should connect to server using WebSocket
• If WebSocket connection was successful app should send BootNotification
• App user should be able to start transaction (StartTransaction)
• If charge transaction was successful user should be able to stop transaction (StopTransaction)

Requirements

• Implement using modern C++ features
• Unit test is not required but is a plus
• Usage of 3rd party libraries or Linux packages allowed
• We expect to get a GitHub repository containing application's source code and short instruction in readme.md how to run that application

Additional info

Documentation

• OCPP 1.6 Specification - JSON - document gives the information required to create a correct interoperable OCPP JSON implementation
• OCPP 1.6 Specification - Edition - document defines the protocol used between a Charge Point and Central System

Configuration

• OCPP JSON WebSocket URL - ws://3.125.118.3:8080/steve/websocket/CentralSystemService/(chargeBoxId)
• chargeBoxId - [public_1, public_2, public_3]

WebSocket headers

• Sec-WebSocket-Key - not required
• Sec-WebSocket-Protocol - "ocpp1.6"
• Sec-WebSocket-Version - "13"

BootNotification properties

• Use your own

StartTransaction properties

• connectorId - 1
• idTag - use random string, generated on app start
• meterStart - use random number

StopTransaction properties

• idTag - Same tag as in StartTransaction
• meterStop - meterStart + some value