I am trying to use zmq_poll on stdin, but find that if something comes in on
stdin, the poll returns with a 1, but the .revents field is zero. See code
below.
Any subsequent calls to zmq_poll, immediately return with a 1, but .revents
field remains 0.
Am I setting up the zmq_pollitem_t properly.
Thanks,
Benjy
int main (void)
{
void *context = zmq_ctx_new ();
int rc;
string request;
while (1)
{
zmq_pollitem_t items [1];
items[0].socket = NULL;
items[0].fd = STDIN_FILENO;
items[0].events = ZMQ_POLLIN;
/* Poll for events indefinitely */
rc = zmq_poll (items, 1, -1);
if (rc < 0)
{
perror("zmq_poll error: ");
return 0;
}
else if (rc ==0)
{
cout << "timeout" << endl;
}
else
{
//cout << rc << endl;
//cout << "items[0].socket: "
<< items[0].socket << " items[0].fd: " <<items[0].fd << " items[0].events: "
<< items[0].events << " items[0].revents: " <<items[0].revents << endl;
//cout << "items[1].socket: "
<< items[1].socket << " items[1].fd: " <<items[1].fd << " items[1].events: "
<< items[1].events << " items[1].revents: " <<items[1].revents << endl;
}
if (items[0].revents & ZMQ_POLLIN)
{
// Got a request from cli
getline(cin, request);
cout << request << endl;
}
}
zmq_ctx_destroy (context);
return 0;
}
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