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Avoid treat normal hosts as unresponsive servers

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This is a fix for issue #713

When infra-keep-probing is on, all hosts with expired entries were treated as
unresponsive servers and thus causing problems (see #713).

This commit change that, so that normal hosts with expired entries are treated
as unknown servers.
This commit is contained in:
Hunts Chen 2022-07-14 10:16:13 -07:00
parent 9e4a17baaf
commit 88bf803297
1 changed files with 4 additions and 5 deletions
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9
services/cache/infra.c vendored
View file

@ -721,21 +721,20 @@ infra_get_lame_rtt(struct infra_cache* infra,
else *rtt = USEFUL_SERVER_TOP_TIMEOUT-1000;
}
}
/* expired entry */
if(timenow > host->ttl) {
/* expired entry */
lock_rw_unlock(&e->lock);
/* see if this can be a re-probe of an unresponsive server */
/* minus 1000 because that is outside of the RTTBAND, so
* blacklisted servers stay blacklisted if this is chosen */
if(host->rtt.rto >= USEFUL_SERVER_TOP_TIMEOUT ||
infra->infra_keep_probing) {
lock_rw_unlock(&e->lock);
if(host->rtt.rto >= USEFUL_SERVER_TOP_TIMEOUT) {
*rtt = USEFUL_SERVER_TOP_TIMEOUT-1000;
*lame = 0;
*dnsseclame = 0;
*reclame = 0;
return 1;
}
lock_rw_unlock(&e->lock);
return 0;
}
/* check lameness first */