[amluto]

IOCP was missing a rather obvious feature until recently: disassociating a handle from an IOCP:

https://stackoverflow.com/questions/30688028/un-associate-so...

[magicalhippo]

Just curious, what's the use-case for this?

[amluto]

Any library that is supposed to leave a socket or other handle in the same state in which it got it.

[magicalhippo]

Yeah I suppose. Not used to such libraries, the ones I've used either control the creation of the handle or take ownership.