void Client::Start()
{
    m_workerMutex.lock();

    assert(boost::algorithm::trim_copy(m_id) != "");
    assert(m_port != 0);

    if (m_running) {
        m_workerMutex.unlock();
        return;
    }

    //std::string tcpURL((boost::format("tcp://localhost:%1%") % boost::lexical_cast<std::string>(m_port)).str());

    m_context = zmq_ctx_new();
    assert(m_context != NULL);

    //m_socket = zmq_socket(m_context, ZMQ_REQ);
    //assert(m_socket != NULL);

    //int linger = 0;
    //zmq_setsockopt(m_socket, ZMQ_LINGER, &linger, sizeof(linger));

    //zmq_connect(m_socket, tcpURL.c_str());

    m_running = true;

    m_workerThread = new boost::thread(&Client::SendRequests, this);
    m_workerThread->detach();

    m_workerMutex.unlock();
}

void Client::Stop()
{
    m_workerMutex.lock();

    if (!m_running) {
        m_workerMutex.unlock();
        return;
    }

    m_workerThread->interrupt();

    //std::string tcpURL((boost::format("tcp://localhost:%1%") % boost::lexical_cast<std::string>(m_port)).str());

    delete m_workerThread;
    m_workerThread = NULL;

    //int rc = zmq_disconnect(m_socket, tcpURL.c_str());
    //assert(rc == 0);
    //rc = zmq_close(m_socket);
    //assert(rc == 0);
    int rc = zmq_ctx_destroy(m_context); // ** NEVER STOCKS HERE !!
    assert(rc == 0);

    m_running = false;

    m_workerMutex.unlock();
}