[issue32038] Add API to intercept socket.close()

[STINNER Victor]

STINNER Victor <victor.stinner at gmail.com> added the comment:

> Perhaps you can just dup() the socket? That's what the ref counter is for IIRC.

Sure. That's another option.

But for asyncio with a lot of concurrent users, I'm not sure that it's ok to create a temporary file descriptor, since there is a risk of hitting the maximum number of open file descriptors :-(

Depending on the platform and the event loop implementation, the limit may be low.

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<https://bugs.python.org/issue32038>
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