dfhack/plugins/server/hello.cpp

//
// Hello World client
// Connects REQ socket to tcp://localhost:5555
// Sends "Hello" to server, expects "World" back
//
#include <zmq.h>
#include <string.h>
#include <stdio.h>
//#include <unistd.h>

int main (void)
{
    void *context = zmq_init (1);

    // Socket to talk to server
    printf ("Connecting to hello world server...\n");
    void *requester = zmq_socket (context, ZMQ_REQ);
    zmq_connect (requester, "tcp://localhost:5555");

    int request_nbr;
    for (request_nbr = 0; request_nbr != 10; request_nbr++)
    {
        zmq_msg_t request;
        zmq_msg_init_size (&request, 5);
        memcpy (zmq_msg_data (&request), "Hello", 5);
        printf ("Sending Hello %d...\n", request_nbr);
        zmq_send (requester, &request, 0);
        zmq_msg_close (&request);

        zmq_msg_t reply;
        zmq_msg_init (&reply);
        zmq_recv (requester, &reply, 0);
        printf ("Received World %d\n", request_nbr);
        zmq_msg_close (&reply);
    }
    zmq_close (requester);
    zmq_term (context);
    return 0;
}