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Fix alternative resolver minimum TTL configuration. (fixes #176)

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Signed-off-by: Jason Volk <jason@zemos.net>
This commit is contained in:
Jason Volk
2025-09-22 18:54:32 +00:00
parent f32b6ae17d
commit cf4e65c607
1 changed files with 8 additions and 8 deletions
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16
src/service/resolver/dns.rs
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@@ -34,16 +34,19 @@ type ResolvingResult = Result<Addrs, Box<dyn std::error::Error + Send + Sync>>;
impl Resolver {
pub(super) fn build(server: &Arc<Server>, cache: Arc<Cache>) -> Result<Arc<Self>> {
let config = &server.config;
// Create the primary resolver.
let (conf, opts) = Self::configure(server)?;
let (conf, mut opts) = Self::configure(server)?;
opts.negative_min_ttl = Some(Duration::from_secs(config.dns_min_ttl_nxdomain));
opts.positive_min_ttl = Some(Duration::from_secs(config.dns_min_ttl));
opts.cache_size = config.dns_cache_entries.try_into()?;
let resolver = Self::create(server, conf.clone(), opts.clone())?;
// Create the passthru resolver with modified options.
let (conf, mut opts) = (conf, opts);
opts.negative_min_ttl = None;
opts.negative_max_ttl = None;
opts.positive_min_ttl = None;
opts.positive_max_ttl = None;
opts.negative_min_ttl = Some(Duration::ZERO);
opts.positive_min_ttl = Some(Duration::ZERO);
opts.cache_size = ResolverOpts::default().cache_size;
let passthru = Arc::new(Passthru {
resolver: Self::create(server, conf, opts)?,
@@ -111,10 +114,7 @@ impl Resolver {
fn configure_opts(server: &Arc<Server>, mut opts: ResolverOpts) -> ResolverOpts {
let config = &server.config;
opts.cache_size = config.dns_cache_entries as usize;
opts.negative_min_ttl = Some(Duration::from_secs(config.dns_min_ttl_nxdomain));
opts.negative_max_ttl = Some(Duration::from_secs(60 * 60 * 24 * 30));
opts.positive_min_ttl = Some(Duration::from_secs(config.dns_min_ttl));
opts.positive_max_ttl = Some(Duration::from_secs(60 * 60 * 24 * 7));
opts.timeout = Duration::from_secs(config.dns_timeout);
opts.attempts = config.dns_attempts as usize;