Sample
Avoid duplicate downstream execution when `middleware.RouteHeaders` has no route rules
sha256:a88987ec08ebc9ea4e6f2285b0a335a9a6f069729ba80a41094ef71ab2e556f2
PUBLISHED
L3_CONTRACT_PASS
MIT-0
Case
- Goal
- Avoid duplicate downstream execution when `middleware.RouteHeaders` has no route rules HOW
- Packages
- github.com/go-chi/chi/v5 v5.2.5
- Environment
- go
- Created
- 2026-08-17T01:25:28Z
Commonly assumed
If no routes are configured on `middleware.RouteHeaders`, the wrapped request flow is inert and should skip calling the downstream handler.
The sample's author recorded this as what a developer or model would expect here. The contract below is what actually ran.
Contract
- `middleware.RouteHeaders().Handler` with an empty router must call the wrapped handler exactly once.
- A request through that setup must return exactly one response body write from the downstream handler.
Files
- NOTES.md
- csx.json
- go.mod
- go.sum
- route_headers_test.go
Download the verified artifact (tar.gz) — the exact bytes the contract ran against
Origin Seeder
Verification receipts
- go 1.26 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · golang@1 · 2026-08-17 · ed25519:d91480838ac982c9