{

std::cout << "Welcome to perform()" << std::endl;

// Prepare our context and socket

std::cout << "Create context" << std::endl;

zmq::context context;

std::cout << "Create socket" << std::endl;

zmq::socket publisher = context.socket(ZMQ_PUB);

std::cout << "Connect socket to endpoint" << std::endl;

publisher.connect(endpoint.c_str());

std::cout << "Enter the waiting loop" << std::endl;

#pragma omp parallel for

for (int i = 0; i < 5; ++i)

{

std::cout << "Waiting for " << nseconds << " s" << std::endl;

std::this_thread::sleep_for(std::chrono::seconds{nseconds});

#pragma omp critical

{

std::cout << "Sending loop index " << i << std::endl;

publisher.send("%1d", i);

}

}

std::cout << "Sending end signal" << std::endl;

publisher.send(">>END" );

std::cout << "Bye... :-)" << std::endl;