How to use nanomsg overview architecture without while loop?

Question

I used to and wanted to use the -archetype architecture described here . In this process, they run as client, server, and exchange data. Now the server has the following code (also indicated in the provided link): nanomsg IPC SURVEY

int server (const char *url)
{
  int sock = nn_socket (AF_SP, NN_SURVEYOR);
  assert (sock >= 0);
  assert (nn_bind (sock, url) >= 0);
  sleep(1);                                              // wait for connections
  int sz_d = strlen(DATE) + 1;                           // '\0' too
  printf ("SERVER: SENDING DATE SURVEY REQUEST\n");
  int bytes = nn_send (sock, DATE, sz_d, 0);
  assert (bytes == sz_d);
  while (1)
    {
      char *buf = NULL;
      int bytes = nn_recv (sock, &buf, NN_MSG, 0);
      if (bytes == ETIMEDOUT) break;
      if (bytes >= 0)
      {
        printf ("SERVER: RECEIVED \"%s\" SURVEY RESPONSE\n", buf);
        nn_freemsg (buf);
      }
    }
  return nn_shutdown (sock, 0);
}

Since the socket type NN_SURVEYOR, while-loop does not wait nn_recv. For the client, the socket type is NN_RESPONDENT, and therefore, while the loop in the client is waiting nn_recv.

Now that the while loop runs continuously and indefinitely, CPU utilization is increased to 99%. Could you tell me that there is another way to make geodetic architecture with nanomsg.

Answer 1

yield() , .