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fix(http3): update cached Alt-Svc support #536

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Merged
barjin merged 1 commit into from
Sep 2, 2026
Merged

fix(http3): update cached Alt-Svc support #536

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23 changes: 19 additions & 4 deletions impit/src/http3.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -78,10 +78,25 @@ impl H3Engine {

pub async fn set_h3_support(&self, host: &String, supports_h3: bool) {
let mut cache = self.h3_alt_svc.write().await;
if cache.contains_key(host) {
return;
}

cache.insert(host.to_owned(), supports_h3);
}
}

#[cfg(test)]
mod tests {
use super::*;

#[tokio::test]
async fn alt_svc_discovery_updates_cached_h3_support() {
let engine = H3Engine::init().await;
let host = "example.com".to_string();
let other_host = "other.example.com".to_string();

engine.set_h3_support(&host, false).await;
engine.set_h3_support(&other_host, false).await;
engine.set_h3_support(&host, true).await;

assert!(engine.host_supports_h3(&host).await);
assert!(!engine.host_supports_h3(&other_host).await);
}
}
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