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setopt: allow CURLOPT_DNS_CACHE_TIMEOUT set to -1

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It is documented as valid. Regression from commit b059f7deaf shipped in
8.16.0

Reported-by: Andrei Kurushin
Fixes #18959
Closes #18960
This commit is contained in:
Daniel Stenberg 2025-10-09 09:50:20 +02:00
parent 5d32c4fc7b
commit 29d0a308b4
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GPG key ID: 5CC908FDB71E12C2
1 changed files with 4 additions and 1 deletions
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5
lib/setopt.c
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@ -879,7 +879,10 @@ static CURLcode setopt_long(struct Curl_easy *data, CURLoption option,
switch(option) {
case CURLOPT_DNS_CACHE_TIMEOUT:
return setopt_set_timeout_sec(&s->dns_cache_timeout_ms, arg);
if(arg != -1)
return setopt_set_timeout_sec(&s->dns_cache_timeout_ms, arg);
s->dns_cache_timeout_ms = -1;
break;
case CURLOPT_CA_CACHE_TIMEOUT:
if(Curl_ssl_supports(data, SSLSUPP_CA_CACHE)) {