On Sun, 13 Mar 2005 01:44:43 +0100
Xuân Baldauf <[EMAIL PROTECTED]> wrote:

> skewing write_seq==0 to write_seq==1 might be harmless, but I'm still 
> wondering, why this kind of skewing is done at all. Maybe you have a 
> hint? :-)

Perhaps some old systems get confused by an initial sequence number of
zero, but I can't say for sure.

> P.S.: I'm also wondering wether it is possible to call ioctl SIOCOUTQ 
> after linux notified the application that a TCP connection broke 
> (because the other side went offline unexpectedly).

A broken connection by definition has no output queue.  But Linux will
give you whatever the final tp->write_seq - tp->snd_una value was
a the time of the connection breakage in this case.
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