From: Skip Tavakkolian <skip.tavakkolian@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] adding TCP half-duplex close
Date: Fri, 10 Feb 2017 08:49:17 +0000 [thread overview]
Message-ID: <CAJSxfmJuxPxnpDO6ztKQcdbVWD+2giZYp5By1Uv7=YtcYJ4tCg@mail.gmail.com> (raw)
In-Reply-To: <CAOw7k5ghtmp+VbBy6Zai39_8ZX3w6hYaQ7DxzqDeGpZGBV5rUg@mail.gmail.com>
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I've submitted a patch for this to Bell Labs repo:
/n/sources/patch/tcp-halfduplex-close
Please review it; the change is fairly small.
It would be great if others could try it out. I've done light testing with
rc. I've also verified it passes Go's net/http/serve_test.go (see
https://github.com/golang/go/issues/17906). All testing has been done with
RPI's (1's and 3's). I plan to do more testing with x86 box. Please try it
if you can.
Thanks everyone for your help,
-Skip
On Sun, Feb 5, 2017 at 1:48 PM Charles Forsyth <charles.forsyth@gmail.com>
wrote:
> On 5 February 2017 at 18:13, Bakul Shah <bakul@bitblocks.com> wrote:
>
> If they implement close correctly, they should be able to implement
> close-read correctly, it being a pure subset. In theory :-)
>
>
> but they didn't, so it's useless.
>
>
> As for SYN+data+FIN you had to have both sides properly implement rfc1644
> or the T/TCP extension.
>
>
> the original tcp/ip spec allowed for it, if implemented carefully (partly
> because of its heritage), but again, mismatch of implementations rendered
> it useless.
>
>
> This extension was deprecated at least by 2004 due to "the ease of DoS
> attacks that can result".
>
>
> yes, that's exactly what meant there was no longer any point in trying.
>
>
>
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next prev parent reply other threads:[~2017-02-10 8:49 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-04 1:56 Skip Tavakkolian
2017-02-04 6:29 ` Bakul Shah
2017-02-05 4:24 ` Skip Tavakkolian
2017-02-04 9:58 ` Charles Forsyth
2017-02-04 10:11 ` Charles Forsyth
2017-02-04 10:13 ` Charles Forsyth
2017-02-05 4:39 ` Skip Tavakkolian
2017-02-05 5:23 ` Bakul Shah
2017-02-05 15:51 ` Charles Forsyth
2017-02-05 15:54 ` Charles Forsyth
2017-02-05 18:13 ` Bakul Shah
2017-02-05 21:48 ` Charles Forsyth
2017-02-10 8:49 ` Skip Tavakkolian [this message]
2017-02-12 3:28 ` Skip Tavakkolian
2017-02-05 7:54 ` Fran. J Ballesteros
2017-02-05 4:16 ` Skip Tavakkolian
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