for (;;) {
r= adns__internal_check(ads,query_io,answer_r,context_r);
for (;;) {
r= adns__internal_check(ads,query_io,answer_r,context_r);
nfds= MAX_POLLFDS; to= -1;
adns_beforepoll(ads,fds,&nfds,&to,0);
r= poll(fds,nfds,to);
nfds= MAX_POLLFDS; to= -1;
adns_beforepoll(ads,fds,&nfds,&to,0);
r= poll(fds,nfds,to);