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| author | Simon Kelley <simon@thekelleys.org.uk> | 2022-09-06 15:35:54 +0100 |
|---|---|---|
| committer | Simon Kelley <simon@thekelleys.org.uk> | 2022-09-06 15:35:54 +0100 |
| commit | d6c69f6bdba8e2a138faa6c422f5fd29545f1f06 (patch) | |
| tree | ac7df052cdad7b9add134690354fc480fabba8bf | |
| parent | ce372917fef8e89a2a928735a2470f6d9c0e253c (diff) | |
| download | dnsmasq-d6c69f6bdba8e2a138faa6c422f5fd29545f1f06.tar.gz | |
Free sockets awaiting upstream DNS replies ASAP.
Once we have a good answer, close the socket so that the fd can
be reused during DNSSEC validation and we don't have to read and
discard more replies from other servers.
| -rw-r--r-- | src/forward.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/forward.c b/src/forward.c index e8249a6..f90be2f 100644 --- a/src/forward.c +++ b/src/forward.c @@ -1144,6 +1144,13 @@ void reply_query(int fd, time_t now) } forward->sentto = server; + + /* We have a good answer, and will now validate it or return it. + It may be some time before this the validation completes, but we don't need + any more answers, so close the socket(s) on which we were expecting + answers, to conserve file descriptors, and to save work reading and + discarding answers for other upstreams. */ + free_rfds(&forward->rfds); #ifdef HAVE_DNSSEC if ((forward->sentto->flags & SERV_DO_DNSSEC) && |