iilyak commented on PR #4729:
URL: https://github.com/apache/couchdb/pull/4729#issuecomment-1688690143
> I managed to find a way to seemingly detect the connection state change
after the local client (curl) disconnects by querying the equivalent of
`getsockopt(fd(), IPPROTO_TCP, TCP_CONNECTION_INFO, &info, &info_size)`
>
> ```
> (node1@127.0.0.1)22> rp(inet:getopts(#Port<0.24>, [{raw, 6, 262, 1000}])).
> {ok,[{raw,6,262,
> <<4,6,6,0,7,0,0,0,0,0,0,0,0,0,0,0,204,63,0,0,0,192,255,
> 63,18,0,2,0,0,57,6,0,0,0,0,0,88,58,6,0,1,0,0,0,1,0,0,
> 0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,177,1,0,0,0,0,0,0,
> 0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,148,0,0,0,0,0,0,0,0,
> 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0>>}]}
> ok
> ```
This is nice. If we can cleanly encapsulate it in mochiweb then it might be
a viable option. I am planing to look into mochiweb code to see if it is doable.
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