>From comp.protocols.tcp-ip, I found the following:

In article <3oth4c$3cg@hpindda.cup.hp.com>, raj@cup.hp.com (Rick Jones) writes:
|> James Carlson (carlson@Xylogics.COM) wrote:
|> : In article <3oms03$j1v@cnn.Princeton.EDU>, dawagner@flagstaff.princeton.edu (David A. Wagner) writes:
|> : [...]
|> : |> 					iss = tp->rcv_nxt + TCP_ISSINCR;
|> : |> 
|> : |> Shouldn't that be a tp->snd_nxt instead of a tp->rcv_nxt ?
|> : [...]
|> : Yep, sure looks like it to me ...
|> 
|> I thought that what we are checking is the SYN from the remote to make
|> sure that it is beyond the window, beyond the window would be beyond
|> what we ahve been *receiving* from the remote, so wouldn't it be
|> tp->rcv_nxt?

Yeah, the part of the code above where I extracted (the 'if' statement
itself) is fine.  But iss shouldn't be set to the rcv_nxt plus a small
increment -- iss is the *sender's* initial sequence number, not the
expected (received) sequence number.

---
James Carlson <carlson@xylogics.com>            Tel:  +1 617 272 8140
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