urllib doesn't respect macOS bypass proxy rules if URL contains port
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stdlib
type-bug
- Dominant language
- Python
- Stars
- 77.2k
- Forks
- 35.9k
- PR merge metrics
- PR metrics pending
Description
Bug report
Bug description:
If macOS proxy bypass system configuration contains *.example.com rule,
urllib.request.urlopen("https://www.example.com/") request is not redirected to the proxy but urllib.request.urlopen("https://www.example.com:443/") is redirected.
CPython versions tested on:
3.13
Operating systems tested on:
macOS
Linked PRs
- gh-132672
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the two urllib.request.urlopen calls on macOS with a *.example.com proxy-bypass rule, then trace urllib's proxy handling for URLs with and without an explicit port. Done means both URL forms consistently honor the macOS bypass configuration; the issue body names no specific file or test.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- networking
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100