[Bug 17195] NamedPipe datagrams need to be _really_ datagrams

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

--- Comment #19 from Juan Lang   2009-02-11 12:19:08 ---
(In reply to comment #16)
> - start off in non-message-mode and switch to message-mode with data still
>
> unread

As I expected, this isn't allowed, either on the client end or server end of a
named pipe.  My tests that demonstrate it were sent in:
http://www.winehq.org/pipermail/wine-patches/2009-February/069264.html
> - start off in message-mode and switch to non-message-mode with data
>
> outstanding and not outstanding, as two separate tests.

This, in contrast, is possible.  I haven't tested reading and writing in this
case, just that the API to switch modes succeeds.  See the above link.
> - do a CreateNamedPipe in message-mode on server-end and don't set
>
> message-mode on the client, and see what happens

Also possible.
> - do a CreateNamedPipe _not_ in message-mode on server-end, and set
>
> message-mode on the server, and see what happens.

Not possible.  See tests.