affinity.c

#include <assert.h>
#include <inttypes.h>
#include "zmq.h"

int main (void)
{
    void *context = zmq_init (1);
    void *socket = zmq_socket (context, ZMQ_SUB);
    
    uint64_t one = 1;
    int rc = zmq_setsockopt (socket, ZMQ_AFFINITY, &one, sizeof (uint64_t));
    assert (rc == 0 || errno == ETERM);

    uint64_t affinity;
    size_t type_size = sizeof (uint64_t);
    zmq_getsockopt (socket, ZMQ_AFFINITY, &affinity, &type_size);

    assert (affinity == one);

    return 0;
}