Is there an issue that keeps track of all the missing pieces? A "remaining 
tasks" list would be useful for involving more devs (and of course useful when 
resuming development, "now, where was I..."). A quick search on BPO revealed 
some info:

- bpo-46313: SSLObject does not raise SSLEOFError on OpenSSL 3
- bpo-40479: Port _hashlib to OpenSSL 3.0.0
- bpo-46114: OpenSSL 3.0 uses different version scheme
- bpo-38820: Make Python compatible with OpenSSL 3.0.0

Thank you for all the work you've put into this already, Christian!


Erlend

> On 9 Jan 2022, at 19:39, Christian Heimes <christ...@python.org> wrote:
> 
> Hi,
> 
> I would like to remind everybody that Python's support for OpenSSL 3.0 is 
> preliminary [1]. Python compiles with OpenSSL 3.0.0 and simple code kinda 
> works. However there are known performance regressions, missing features 
> (e.g. usedforsecurity flag), and potential bugs cause by API 
> incompatibilities.
> 
> Due to the experimental state I advise against using Python with OpenSSL 3.0 
> in production.
> 
> It may take a while until Python gains full support for the next version of 
> OpenSSL. I have shifted my personal OSS time to more fun topics like 
> performance and WASM. My work time is currently limited, too.
> 
> Christian
> 
> [1] https://docs.python.org/3/whatsnew/3.10.html#ssl
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