Re: Socket filtering
Re: Socket filtering
- Subject: Re: Socket filtering
- From: Josh Graessley <email@hidden>
- Date: Wed, 26 Apr 2006 16:43:26 -0700
I'm not sure what you are trying to accomplish here.
When the socket is closed, any uninjected data should be discarded.
You are asking for a hook to use as a warning that the socket will
close. Do you mean a hook before the client calls close on the
socket? I'm not sure how one would predict such a thing. A hook after
the client calls close seems useless because the client is done
calling read, so there is no point in injecting data.
-josh
On Apr 26, 2006, at 4:31 PM, Eric Long wrote:
If a socket filter swallows a packet but then its sf_detach_func()
gets
called before it has a chance to reinject the packet, it cannot at
that
point reinject the packet.
What hook should be used to get advanced warning that the socket
will close,
so the filter can make sure and reinject the packet while it still
can?
Thanks,
Eric
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