RE: [lwip-users] lwIP TCP Dup Ack problem

[Ramanathan Ramadass]

If you mean the TCP_EVENT_XXX functions when you say "raw api" then yes, i
am using those callbacks. In TCP_EVENT_RECV i do something like;

if(pbuf)
{
        //... do something
        tcp_recved(pcb, pbuf->tot_len);
}

Both TCP_EVENT_SENT and TCP_EVENT_POLL return ERR_OK. The TCP fast timer
is invoked every 250ms and the slow timer every 500ms.

Regards
Ram

-----Original Message-----
From: address@hidden
[mailto:address@hidden On
Behalf Of Per-Henrik Lundblom
Sent: Wednesday, August 01, 2007 11:48 AM
To: Mailing list for lwIP users
Subject: Re: [lwip-users] lwIP TCP Dup Ack problem

* Ramanathan Ramadass <address@hidden> [070801 20:38]:
 
> 2. I am finding some odd behaviour w.r.t. Dup Acks. While I am hunting
it
> down; I am not sure whether it is a known problem and/or whether it has
> been fixed. Attached is a trace of the problem. It was generated using
> "nc" (netcat). In the trace;

How are you using the lwIP interfaces? Are you using the raw API? I is
possible, using the raw API to generate dup acks if the "wrong"
functions are called at certain times.

/PH

--
Per-Henrik Lundblom           epost: address@hidden
telefon: 0733-20 71 26        hemsida: www.whatever.nu



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