Sample
Prove that net/http mutates a gzip response at the client boundary instead of preserving raw transfer shape.
sha256:78e4711f9d506993f466ebedaae4f1c6636c420b765ce7576ba6a2b5a239991f
PUBLISHED
L3_CONTRACT_PASS
MIT-0
Case
- Goal
- Prove that net/http mutates a gzip response at the client boundary instead of preserving raw transfer shape. HOW
- Packages
- net/http go1.26.5
- Environment
- go
- Created
- 2026-08-16T13:09:01Z
Commonly assumed
A caller using a default http.Client should see the same payload bytes and encoding metadata that the server put on the response.
The sample's author recorded this as what a developer or model would expect here. The contract below is what actually ran.
Contract
- When a server writes a gzip-compressed body, a default http.Client request must return plain text bytes, not gzip bytes.
- The response seen by the caller must have Uncompressed set to true and lose Content-Encoding after decoding.
Files
- NOTES.md
- csx.json
- go.mod
- gzip_roundtrip_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 · 2026-08-16 · ed25519:d91480838ac982c9