Sample
rack-test 2.2.0: Handle Rack::Test header HTTP_ double-prefixing, 308 redirect method mutation, query array flattening, and cookie comma truncation
Verified sample for gem rack-test 2.2.0: Handle Rack::Test header HTTP_ double-prefixing, 308 redirect method mutation, query array flattening, and cookie…
sha256:6aecd2e6d9ef6825e6ce4c57fc426ae63e441fa97f883f1d312c633d86a88d25
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 1
Declared environment
ruby linux x64 ruby ruby rubygems
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| ruby 3 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · rubygems@1 |
2026-08-16 |
| ruby 3 · linux debian/x64 · docker ed25519:2175b912ea1c23b1 | SKIPPED | compile:SKIPPED · contract:SKIPPED · load:SKIPPED · resolve:FAIL CONTAINER_RUN · rubygems@1 |
2026-08-18 |
Case
HOW- Goal
- Handle Rack::Test header HTTP_ double-prefixing, 308 redirect method mutation, query array flattening, and cookie comma truncation
- Packages
- Symbols
-
- Rack::Test::Methods
- Rack::Test::Session#header
- Rack::Test::Session#follow_redirect!
- Rack::Test::Utils.build_nested_query
- Rack::Test::UploadedFile.new
- Rack::Test::CookieJar
- Environment
- ruby
- Created
- 2026-08-16T16:46:17Z
Contract
- Rack::Test::Session#header unconditionally prepends HTTP_ to all header names other than CONTENT_TYPE and CONTENT_LENGTH, mangling HTTP_AUTHORIZATION into HTTP_HTTP_AUTHORIZATION, while follow_redirect! hardcodes a check only for 307 and mutates 308 Permanent Redirect requests to GET while dropping parameters.
- Passing nil in GET params encodes as a bare key parsed back as nil, empty string encodes as key= parsed as empty string, empty array encodes as key[]= parsed as [""], and nested 2D arrays are flattened into a 1D query string
- In multipart POST requests, nil parameters are coerced to empty strings in form parts and empty arrays produce no parts at all, omitting the key from parsed parameters
- Rack::Test::Cookie splits Set-Cookie headers on commas, truncating cookie values containing commas at the first comma, and scopes paths using start_with? matching prefixes beyond directory boundaries
Files
- Gemfile
- Gemfile.lock
- NOTES.md
- csx.json
- src/app.rb
- test/contract.rb