On Tue, 25 Apr 2000 [EMAIL PROTECTED] wrote:
> Yes, we must drop old segments and send ACK for them.
> All out of window segments (not depending on FIN) are handled in this way.
>
> If host2 loses our ACKs, the bug is to be fixed there.
No, because no other packet is acking XSEQ+1! If you drop that packet and
blindly ACK it, then host2 will enter TIME_WAIT, but you will stay in
CLOSING! In my old dumps, host2 then ignored the retransmitted FIN,
resulting in a stuck socket.
Also, the third line should read FIN XSEQ:XSEQ(0) ack YSEQ+1. The FIN
never gets ACKed since the fourth packet there is dropped. (You can tell
I'm not used to this -- next message I'll probably change my mind again. I
wish I could find those dumps. :/ )
Taral
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