[Savannah-help-public] [sr #106959] Sending Reset in Established State, how to choose the seqno?

[anonymous]

URL:
  <http://savannah.gnu.org/support/?106959>

                 Summary: Sending Reset in Established State, how to choose
the seqno?
                 Project: Savannah Administration
            Submitted by: None
            Submitted on: Tue 04 Aug 2009 03:19:01 AM UTC
                Category: None
                Priority: 5 - Normal
                Severity: 3 - Normal
                  Status: None
             Assigned to: None
        Originator Email: 
        Operating System: None
             Open/Closed: Open
         Discussion Lock: Any

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Details:

I have a problem in debuging lwip.
In my project, i will send Reset when i could not receive coresponding Ack
within 4 minutes in establshed state.How can I choose the seqno of the Reset?

In the Code, I find that the seqno is pcb->snd_nxt. But I think because the
segment do not receive its Ack, so the seqno of Reset should be the seqno of
the segment last sent.

For example:
The segment have a seqno "100" and length "1000",so when it is sent, the
snd_nxt should be 1100. In 4 minutes, I could not receive its Ack. I decide to
send Reset. According to the Lwip code, the seqno of Reset is 1100. But I
think it should be 100.

Need your help and Thanks very much!




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