On Wed, Jan 14, 2009 at 04:05:50AM -0500, Bill Fink wrote:
quoted text
>
> Well, my man tcp(7) just says:
> 
>    SIOCOUTQ
>           Returns the amount of unsent data in the socket send queue.  The
>           socket must not be in LISTEN state, otherwise an error  (EINVAL)
>           is returned.

You still read man pages? :)

If you look at the actual code, SIOCOUTQ returns

	tp->write_seq - tp->snd_una

Really you can't get any more precise than that for what you want.

Cheers,
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