[Bug 17195] NamedPipe datagrams need to be _really_ datagrams

wine-bugs at winehq.org wine-bugs at winehq.org
Mon Dec 19 16:43:52 CST 2011


http://bugs.winehq.org/show_bug.cgi?id=17195

--- Comment #55 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> 2011-12-19 16:43:52 CST ---
alexandre, feel free to do whatever you feel is most useful to you.


adam, i've just discovered this:
http://urchin.earth.li/~twic/Sequenced_Packets_Over_Ordinary_TCP.html

a quick search online shows that SOCK_SEQPACKET is, indeed, only
supported on a few "arcane" platforms, implemented on TCP on others
but not on unix domain sockets, so its use would put wine at risk
of completely failing to operate correctly... but only on certain
platforms.

that link shows however that someone came up with a realllly weird
usage for "urgent TCP pointers" which actually provides, amazingly,
the same semantics.

about the only people that *i* know who would have a clue what that's
about are some of the people i met when working at linuxcare. rusty
russell, andrew tridgell, and a couple of others.

amazing.  unix might actually have something that provides guaranteed
atomic delivery of fixed-size messages.  i've been hunting for that
functionality for 12 years :)

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