Sample
httpx 0.28.1: Implement custom authentication in httpx via generator-based auth_flow, handling 401 challenge retries, payload buffering flags, and cross-origin redirect header stripping
Verified sample for pypi httpx 0.28.1: Implement custom authentication in httpx via generator-based auth_flow, handling 401 challenge retries, payload…
sha256:8beca7b4089b38cfdeb21bb5dca8de9f6632eb54e66b117132c9e44357d26315
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.
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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
- 2
Declared environment
python linux x64 python python pip
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| python 3.12 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1 |
2026-08-17 |
| python 3.12 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1 |
2026-08-18 |
Case
HOW- Goal
- Implement custom authentication in httpx via generator-based auth_flow, handling 401 challenge retries, payload buffering flags, and cross-origin redirect header stripping
- Packages
- Symbols
-
- httpx.Auth
- httpx.Auth.auth_flow
- httpx.BasicAuth
- httpx.RequestNotRead
- Environment
- python
- Created
- 2026-08-17T06:39:48Z
Contract
- Subclassing httpx.Auth requires a generator auth_flow yielding requests and receiving responses, preserving 401 challenge responses in history upon retry
- Accessing request.content on streaming requests inside auth_flow raises RequestNotRead unless requires_request_body is set to True
- Accessing response.content on streaming responses inside auth_flow raises ResponseNotRead unless requires_response_body is set to True
- Following redirects strips Authorization headers on cross-origin redirects while preserving them for same-origin destinations
- Client accepts (username, password) tuples as BasicAuth and callable functions as FunctionAuth, while rejecting non-callable types with TypeError
Files
- NOTES.md
- csx.json
- requirements.lock
- requirements.txt
- src/__init__.py
- src/auth_schemes.py
- test/__init__.py
- test/contract.py