Add `socket.IP_FREEBIND` constant

[alyssais]

Feature or enhancement

Proposal:

The socket options exposed by CPython's socket module do not include IP_FREEBIND, meaning the option number has to be hardcoded. Examples of this in the wild can be find using GitHub's code search.

Has this already been discussed elsewhere?

This is a minor feature, which does not need previous discussion elsewhere

Links to previous discussion of this feature:

No response

Linked PRs

• gh-132991: Add socket.IP_FREEBIND constant #132998

[picnixz]

Examples of this in the wild can be find using GitHub's code search.

What kind of code search did you do for that? could you share your findings? (I don't mind adding this constant if it's that useful though so TiA)

[alyssais]

https://github.com/search?q=setsockopt+IP_FREEBIND+15+language%3APython&type=code

You can see lots of different approaches to work around the lack of this constant.

I'll make a PR shortly.

[picnixz]

Thanks. Is there something we however need to do in particular with this constant? should we handle it specifically in some contexts? (I don't know)

[alyssais]

No, it's just for passing to setsockopt().