python / python/cpython

socketmodule sock_listen accepts backlog negative arg on macOs and FreeBSD

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#93,316 6 comments 0 reactions 0 assignees View on GitHub

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extension-modules topic-socket type-feature
Dominant language
Python
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Description

Feature or enhancement

For these systems, it is set implicitly SOMAXCONN.

Pitch

Allowing negative value for those systems since it s allowed and makes sense, recent Linux kernels versions can too but it can enabled in another time.

Linked PRs
  • gh-93315

Contributor guide

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the socketmodule sock_listen implementation and the handling of negative backlog values on macOS and FreeBSD. Check the linked gh-93315 work before starting. Done means negative values are accepted on those systems and use the platform's implicit SOMAXCONN behavior, with relevant tests passing.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
networking
Issue type
Feature
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
25/100

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