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From: | Sarp Daltaban |
Subject: | Re: [lwip-users] Incorrect ACK number for the TCP Server with PPPoS, NetConn and FreeRTOS |
Date: | Wed, 6 Jun 2018 19:26:22 +0300 |
On 06/06/2018 09:29 AM, sarp wrote:
> I am implementing a TCP Server with PPPoS where NO_SYS = 0(FreeRTOS).
>
> Everything is OK, one thread feeds ppp and the other opens a netconn socket
> for server and starts listening.
>
> However, when a client is connected, connection is reset because of
> incorrect ACK number with
>
> the switch case SYN_RCVD of tcp_process() by the function tcp_rst() in
> tcp_in.c
>
> What could be the reason for that?
>
>
Are TCP checksums enabled and passing? First guess is usually data
corruption in the link layer due to buggy driver
Joel
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