48 lines
1.7 KiB
Rust
48 lines
1.7 KiB
Rust
//! Regression: SSE connection-pool leak via missing `EventSource.close()`.
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//!
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//! Every HTML template that opens `new EventSource('/web/events')` must
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//! also close it on `pagehide`. Without the close, Chrome keeps the
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//! socket in a "draining" state after navigation; after ~6 rapid
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//! back-and-forth navigations all 6 per-origin pool slots are draining
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//! and new requests stall with `blocked` timings of 15-30 seconds
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//! (confirmed by HAR capture on 2026-04-20).
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use std::fs;
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use std::path::Path;
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#[test]
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fn every_event_source_template_closes_it_on_pagehide() {
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let template_dir = Path::new(env!("CARGO_MANIFEST_DIR")).join("templates");
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let entries = fs::read_dir(&template_dir).expect("templates directory readable");
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let mut checked = 0;
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let mut missing: Vec<String> = Vec::new();
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for entry in entries {
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let path = entry.unwrap().path();
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if path.extension().and_then(|s| s.to_str()) != Some("html") {
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continue;
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}
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let content = fs::read_to_string(&path).unwrap();
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if !content.contains("new EventSource('/web/events')") {
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continue;
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}
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checked += 1;
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let has_pagehide = content.contains("pagehide");
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let has_close = content.contains(".close()");
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if !(has_pagehide && has_close) {
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missing.push(path.file_name().unwrap().to_string_lossy().into_owned());
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}
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}
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assert!(
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checked >= 1,
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"test itself is stale: no template contains EventSource('/web/events')",
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);
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assert!(
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missing.is_empty(),
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"templates open EventSource but lack `pagehide` + `.close()` cleanup: {missing:?} \
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— this leaks Chrome socket-pool slots and stalls navigation after ~6 cycles",
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);
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}
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