[zeromq-dev] Even more fun with accept

[Holger Hoffstätte]

Martin Sustrik wrote:
>> Second, Unix has an interesting strategy for dealing with closed
>> sockets, namely to keep them around for a minute or so.
> 
> No way to get around this, I suppose? Some kind of kill -9 for sockets?

As Pieter said it depends on whether there is still in-flight data or not.
Also it's different for client and server. So have fun finding all the
relevant combinations for SO_LINGER and (on Linux) the usefulness of
net.ipv4.tcp_tw_recycle or net.ipv4.tcp_tw_reuse (for influencing the
TIME_WAIT state). Or whether they work correctly on any given kernel.

good luck :)
-h