control/examples/rpc_call/main.cpp

#include <chrono>
#include <cstdint>
#include <cstring>
#include <format>
#include <iostream>
#include <thread>
#include <vector>

#include "libcontrol.h"

int main() {

  const auto messaging_interface = std::make_unique<MessagingInterface>();

  const auto modules =
      messaging_interface->find_connected_modules(std::chrono::seconds(3));

  std::cout << "Found " << modules.size() << " modules" << std::endl;

  for (const auto module : modules) {
    std::cout << "Found ID " << (int)module << std::endl;
  }

  const auto function_tag = 100;
  const auto module = 98;
  std::string msg = "Hello world!";
  std::vector<uint8_t> parameters(msg.begin(), msg.end());
  auto maybe_return_value =
      messaging_interface->remote_call(function_tag, module, parameters);

  if (maybe_return_value) {
    auto return_value = std::move(*maybe_return_value);
    std::cout << "Got return value " << (char *)return_value->data()
              << std::endl;
  } else {
    std::cout << "Function call time out" << std::endl;
  }

  return 0;
}