yaz_log(man->log_level, "yaz_poll begin nofds=%d", no_fds);
res = yaz_poll(fds, no_fds, tv_sec, 0);
yaz_log(man->log_level, "yaz_poll returned res=%d", res);
yaz_log(man->log_level, "yaz_poll begin nofds=%d", no_fds);
res = yaz_poll(fds, no_fds, tv_sec, 0);
yaz_log(man->log_level, "yaz_poll returned res=%d", res);