+ while (!hupped) {
+ // Since we are non-blocking, we need to wait for the right state first.
+ // Wait up to 50 ms, then check hupped.
+ pollfd pfd;
+ pfd.fd = server_sock;
+ pfd.events = POLLIN;
+
+ int nfds = poll(&pfd, 1, 50);
+ if (nfds == 0 || (nfds == -1 && errno == EAGAIN)) {
+ continue;
+ }
+ if (nfds == -1) {
+ perror("poll");
+ usleep(100000);
+ continue;
+ }
+