netdev - Re: TCP Connection teardown seems to violate TCP specification

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Message-ID: <CAK6E8=fWOe3eEvw6sC=Da415qGp+wXsm2bpe9Vbbukit9yU8sQ@mail.gmail.com>
Date:	Wed, 14 Aug 2013 12:50:05 -0700
From:	Yuchung Cheng <ycheng@...gle.com>
To:	Damian Lukowski <damian@....rwth-aachen.de>
Cc:	netdev <netdev@...r.kernel.org>
Subject: Re: TCP Connection teardown seems to violate TCP specification

On Wed, Aug 14, 2013 at 12:21 PM, Damian Lukowski
<damian@....rwth-aachen.de> wrote:
> Hi,
>
> the TCP specification states that an endpoint has to accept
> packets from the other side even after it has half-closed the
> connection locally. This does not seem to be the case
> under Linux?
>
> For example, when I wget -O /dev/null https://www.verisign.com/
> --max-redir 0, the local TCP stack sends an FIN,ACK close to the end.
> However, the webserver has more data to send (Encrypted Alert).
> Instead of ACKing the packet, the local side sends a RST.
> This seems wrong to me.

Which wget are you using? it's not doing half-close (i.e.,
shutdown(SHUT_WR)) on my wget version 1.13.4


>
> Regards
>  Damian
>
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