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99c72bf5da
First of all, there was a flaw in the code related to the
'stale-refresh-time' option. If stale answers are enabled, and we
returned stale data, then it was assumed that it was because we were
in the 'stale-refresh-time' window. But now we could also have returned
stale data because of a 'stale-answer-client-timeout'. To fix this,
introduce a rdataset attribute DNS_RDATASETATTR_STALE_WINDOW to
indicate whether the stale cache entry was returned because the
'stale-refresh-time' window is active.
Second, remove the special case handling when the result is
DNS_R_NCACHENXRRSET. This can be done more generic in the code block
when dealing with stale data.
Putting all stale case handling in the code block when dealing with
stale data makes the code more easy to follow.
Update documentation to be more verbose and to match then new code
flow.
(cherry picked from commit
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| .. | ||
| include | ||
| tests | ||
| win32 | ||
| client.c | ||
| hooks.c | ||
| interfacemgr.c | ||
| Kyuafile | ||
| lib.c | ||
| listenlist.c | ||
| log.c | ||
| Makefile.in | ||
| notify.c | ||
| query.c | ||
| server.c | ||
| sortlist.c | ||
| stats.c | ||
| update.c | ||
| version.c | ||
| xfrout.c | ||