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DNS_Mgr: Remove usage of ares_getsock from GetNextTimeout

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This commit is contained in:
Tim Wojtulewicz 2024-08-30 10:24:45 -07:00
parent 16474ed77f
commit 6739fca645
1 changed files with 10 additions and 14 deletions
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24
src/DNS_Mgr.cc
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@ -1315,23 +1315,19 @@ double DNS_Mgr::GetNextTimeout() {
if ( asyncs_pending == 0 )
return -1;
int nfds = 0;
ares_socket_t socks[ARES_GETSOCK_MAXNUM];
int bitmap = ares_getsock(channel, socks, ARES_GETSOCK_MAXNUM);
for ( int i = 0; i < ARES_GETSOCK_MAXNUM; i++ ) {
if ( ARES_GETSOCK_READABLE(bitmap, i) || ARES_GETSOCK_WRITABLE(bitmap, i) )
++nfds;
}
struct timeval tv;
struct timeval* tvp = ares_timeout(channel, NULL, &tv);
// Do we have any sockets that are read or writable?
if ( nfds == 0 )
// If you pass NULL as the max time argument to ares_timeout, it will return null if there
// isn't anything waiting to be processed.
if ( ! tvp )
return -1;
struct timeval tv;
tv.tv_sec = DNS_TIMEOUT;
tv.tv_usec = 0;
struct timeval* tvp = ares_timeout(channel, &tv, &tv);
// Clamp the timeout to our desired max, since we passed NULl to ares_timeout.
if ( tvp->tv_sec > DNS_TIMEOUT ) {
tvp->tv_sec = DNS_TIMEOUT;
tvp->tv_usec = 0;
}
return static_cast<double>(tvp->tv_sec) + (static_cast<double>(tvp->tv_usec) / 1e6);
}