On 5 February 2017 at 18:13, Bakul Shah <ba...@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.