open-standards/wai/http-conformance/falsify/order-by-table.patch
Transaction Science 18da795017 wai: falsification of the playlist side (W3-4, W3-5)
Eighteen patches, each breaking one function of the playlist side and naming the
cases that must fail: adjacency (another program date-time, a larger discontinuity
sequence), rendering (parts after EXTINF, layer lines after the URI), bandwidth
rounding, duration rounding, a delta update read, the session-data line before
#EXTM3U, the render digest left out of the signed payload, a receipt under another
name, an unchecked parent, the open segment's parts not read for cids, the integer
log without interpolation, a waiting utility rule, a look-ahead blind to stalls, an
unlabelled figure taken as zero, per-layer bytes as a depth's, and size-blind entry
order. falsify/run.sh builds with http and video_manifest and runs the eleven new
Python mutations. A depth case at 150 kb/s sits between layer boundaries.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
2026-10-06 06:31:05 -04:00

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Diff

# must fail: abr_order_O7_throughput_0
# a capability's entries left in table order, not ordered by size (abr::order_manifest)
diff --git a/wai/wai-rs/src/http_binding/abr.rs b/wai/wai-rs/src/http_binding/abr.rs
index a8046b34..8c2cc113 100644
--- a/wai/wai-rs/src/http_binding/abr.rs
+++ b/wai/wai-rs/src/http_binding/abr.rs
@@ -389,7 +389,7 @@ pub fn order_manifest(head: &Head, m: &ManifestV2, eligible: &dyn Fn(&str) -> bo
}
let mut order = Vec::with_capacity(e.len());
for (_, mut g) in groups {
- g.sort_by_key(|&i| (len(i), i));
+ g.sort_by_key(|&i| i);
let mut st = s.clone();
st.option_bytes = g.iter().map(|&i| len(i)).collect();
st.option_joules_micro = g.iter().map(|&i| s.option_joules_micro.get(i).copied().flatten()).collect();