[Bug 12302] Lord of the Rings: Shadows of Angmar unplayable due to high lag

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=12302





--- Comment #31 from Andreas Blochberger <andreas at blochberger.net>  2008-05-11 10:33:08 ---
After looking at the source in socket.c i think there must be something wrong.
It seems, that the lotro client is using non-blocking sockets to read data. But
in my logs i didn't find any successful call to WSARecvFrom. It's been a long
time ago, since i had to bother with windows IP communication, so i am not that
firm in that area.
here is the log for one call:
trace:winsock:WSARecvFrom socket 018c, wsabuf 0x7bbfe90c, nbufs 1, flags 0,
from 0x212b8c8, fromlen 16, ovl (nil), func (nil)
trace:winsock:WSARecvFrom fd=76, options=0
warn:winsock:WSARecvFrom  -> ERROR 10035

The socket is created this way:
trace:winsock:WSASocketW af=2 type=2 protocol=0 protocol_info=(nil) group=0
flags=0x1

There is a fixme in that function, but in this case, the only flag given is
WSA_FLAG_OVERLAPPED

So, lotro calls WSARecvFrom on an overlapped socket without providing an
lpOverlapped structure. Maybe this is the reason, why lotro sends out so mayn
packets, because it thinks, it didn't receive an answer, though it did... but
that#s just wild speculation...


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