[Bug 17195] NamedPipe datagrams need to be _really_ datagrams

[wine-bugs at winehq.org]

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





--- Comment #18 from Luke Kenneth Casson Leighton <lkcl at lkcl.net>  2009-02-08 09:57:49 ---
Created an attachment (id=19335)
 --> (http://bugs.winehq.org/attachment.cgi?id=19335)
progress so far

work-in-progress, provided in case anyone's interested.
being absolutely honest, it's fairly horrendous! :)

the infrastructure is in place to create, on each messagemode write,
another socketpair, but is disabled for now (line 1804 of server/named_pipe.c)
as the socketpair needs to be closed when availdata == 0 (line 1665, TBD)
on a read, and in ntdll/file.c detection is required, if polling / waiting
for a read, for when a close occurs, to loop round and get another
filedescriptor.

so that's _definitely_ one for another day!

right now, i have at least test1 working, and, amazingly, shortread.

send2recv2 obviously fails due to the use of a single filedescriptor pair.

ironically, testing is actually taking place by having to watch the
\\pipe\\svcctl rpcrt4 interaction, not the tests!  named pipes are such a
fundamental part of wine now that ... ok, it would be _really_ helpful
if ncalrpc used lrpc not named pipes :)


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