//
//  Hello World 客户端
//  连接REQ套接字至 tcp://localhost:5555
//  发送Hello给服务端，并接收World
//
#include <zmq.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
 
int main (void)
{
    void *context = zmq_init (1);
 
    //  连接至服务端的套接字
    printf ("正在连接至hello world服务端...\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 ("正在发送 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 ("接收到 World %d\n", request_nbr);
        zmq_msg_close (&reply);
    }
    zmq_close (requester);
    zmq_term (context);
    return 0;
}