ITransport

ITransport defines an abstract interface for sending asynchronous HTTP POST requests, allowing components to perform remote communication with external services.

class ITransport : public ISubsystem {
public:
  virtual ~ITransport() = default;

  virtual void post(
    std::string_view url,
    std::string_view body,
    const std::vector<std::pair<std::string_view, std::string_view>>& headers,
    MoveOnlyFunction<void(std::string_view)> onSuccess,
    MoveOnlyFunction<void(std::string_view)> onError) = 0;
};

ITransport derives from ISubsystem, so an implementation also inherits start() and stop(). Both have empty default bodies — override them if the transport owns a connection pool, an event loop, or a worker thread that must be brought up and torn down with the engine.

Purpose

• Provide a generic mechanism to send HTTP POST requests without coupling to a specific transport library or implementation.
• Enable integration with APIs, webhooks, or external risk/configuration services.

Responsibilities

Method	Description
post()	Sends a POST request to the specified URL with custom headers and body. Invokes success or error callback based on result.
start()	Inherited from ISubsystem. Default no-op.
stop()	Inherited from ISubsystem. Default no-op.