Jesus Cea wrote:

About controversial... keepalive are usually sent only when the
connection is 100% idle for a while, when "while" can be >15 minutes, so
the load should be "none" for regular connections.

I guess the concern would be that the keepalive probe itself
is subject to uncertain delays, so how long do you wait for
a reply before deciding that the connection is dead? If you
don't wait long enough, you could end up killing a connection
that would have come back if you had waited longer.

--
Greg
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