Hello Johan,
On Wed, 2006-05-10 at 17:19 +0200, Johan Högberg wrote:
> Hi,
>
> I have problems with the sequence number generated by the reset in
> listen state and wonder if "ackno + 1" is correct in the following sequence:
>
> tcp_in.c:
> static err_t
> tcp_listen_input(struct tcp_pcb_listen *pcb)
> {
> .....
> if (flags & TCP_ACK) {
> /* For incoming segments with the ACK flag set, respond with a
> RST. */
> LWIP_DEBUGF(TCP_RST_DEBUG, ("tcp_listen_input: ACK in LISTEN, sending
> reset\n"));
> tcp_rst(ackno + 1, seqno + tcplen,
> ....
>
> In my setup Ethereal report out of sequence error on this frame.
> I believe the "+ 1" should be omitted, is this correct?
Good call, but maybe first check this with a good book on TCP, or even
the RFC (if this describes this corner case unambiguously).
Regards,
Leon Woestenberg.
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