- // Since we are non-blocking, we need to wait for the right state first.
- // Wait up to 50 ms, then check should_stop.
- pollfd pfd;
- pfd.fd = sock;
- pfd.events = POLLIN;
-
- int nfds = poll(&pfd, 1, 50);
- if (nfds == 0 || (nfds == -1 && errno == EINTR)) {
+ // Wait for a packet, or a wakeup.
+ bool activity = wait_for_activity(sock, POLLIN, NULL);
+ if (!activity) {
+ // Most likely, should_stop was set.