static bool s_send(zmq::socket_t & socket, const std::string & string)

zmq::socket_t* prt_publisher_socket;
zmq::socket_t publisher_socket(context, ZMQ_REP);

prt_analysis_socket = &publisher_socket;
s_send(*prt_publisher_socket, "testing...");

zmq::socket_t & socket

zmq::socket_t analysis_socket(context, ZMQ_REP);
s_send(analysis_socket, "testing...");