[Bug 29499] Age of Empires II freezes when disconnecting from a multiplayer room/game using native DirectPlay DLL

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=29499

--- Comment #28 from Bruno Jesus <00cpxxx at gmail.com> 2012-03-06 19:25:15 CST ---
I don't think it makes sense in setting that events in this case. POLLIN (and
sometimes POLLPRI) is already set so the events variable is never 0 which seems
enough for MacOS. Setting POLLHUP in events in the example code was possibly a
hack to get around the zeroed events variable. Even the poll() man on macos
says that POLLHUP/POLLERR are ignored as expected events [1].

Also you are checking for a combined POLLERR|POLLHUP and IMO you should be
checking for the flags separately, they may not come together in every OS.

Your original patches for this bug led me to understand that there was an
infinite loop between recvmsg and poll. recvmsg returns -1 and then poll
returns 1 showing that there is still something to do, then in the next loop
iteration recvmsg returns -1 ... and so on. What I was trying to do with that
patch was check what kind of event poll was returning so I could filter and
break the infinite loop but that seems not enough for MacOS. The lack of
console printfs from my last patch shows that poll may never be returning (due
to the timeout = -1 which is used and tells poll to way forever).

[1]
https://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man2/poll.2.html

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