Re: Linux TCP/IP stack

[Rabeeh Khoury <rabeeh@xxxxxxxxxxxxx>]

I'm using kernel 2.2.14


Rabeeh Khoury wrote:

> Hi All,
>
> I have noticed (using tcpdump and simple TCP client-server application)
> that TCP frame are always sent with ACK flag even if the sender doesn't
> receive new frames (i.e. it send the same Acknowledgment Number).
>
> RFC 2581 (section 4.1) states that:
>   "A TCP receiver MUST NOT generate more than one ACK for every
> incoming
>   segment, other than to update the offered window as the receiving
>   application consumes new data"
>
> According to the above statement it seems that LINUX TCP / IP violates 
> this rule.
>
> Thanks, Rami
>
>
>
>
> .