OpcUa/BareboneServer

// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------


#include <iostream>
#include <memory>
#include <locale>
#include <codecvt>
#include <thread>

#include <cvb/opcua/server.hpp>

int main(int, char*[])
{
  try
  {
    // create server object
    auto server = Cvb::OpcUa::Server::Create(4840);

    // add a namespace to the server (this is not mandatory)
    auto nsIndex = server->AddNameSpace("TestNamespace");

    // get the "objectsfolder" node id (we will insert a folder to it)
    auto root = Cvb::OpcUa::NodeID::Create(Cvb::OpcUa::Namespace0NodeID::OBJECTSFOLDER);

    // get the type for a folder
    auto type = Cvb::OpcUa::NodeID::Create(Cvb::OpcUa::Namespace0NodeID::FOLDERTYPE);

    // create a folder object
    auto folder = Cvb::OpcUa::ObjectNode::CreateFromType(nsIndex, "TestFolder", *root, *type);

    // add the created folder to the server
    server->AddNode(*folder);

    // creating a FloatNode (as a child of the previously created folder)
    auto node = Cvb::OpcUa::FloatNode::Create(nsIndex, "TestFloat", *folder->NodeID(), 42.7);

    // add the float node to the server
    server->AddNode(*node);

    // add a callback to the float node

    auto callbackCookie = node->RegisterWriteCallback([&]()
    {
      std::cout << "write was triggerd" << std::endl;
    });

    // start, the server is now ready
    server->Start();

    // wait until "enter" is pressed.
    std::cout << "Press enter to stop the server" << std::endl;

    std::cin.get();

    // remove the callback
    node->UnregisterCallback(callbackCookie);

    // stop
    server->Stop();
  }
  catch (const  Cvb::OpcUa::OpcUaException & e1)
  {
    std::cout << e1.what() << std::endl;
  }
  catch (const std::exception & ex)
  {
    std::cout << ex.what() << std::endl;
  }
}