[Bug 20041] Multiplayer not working for Rise of Nation Gold

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=20041

--- Comment #82 from Starous <starous at volny.cz> 2012-10-28 05:49:32 CDT ---
(In reply to comment #73)

> It's weird that the game creates the socket and closes it without doing
> anything, try a +relay,+tid and check what it's doing from the socket creation
> until the closure. Add a trace in WS_getsockopt, case WS_SO_RCVBUF to print the
> value that is being returned in optval (it should be a %d, needs cast) because
> relay will only get the function return, this is after line 2622.

I have some ideas, maybe wrong/stupid:

1.
GetAdaptersAddresses:
It (maybe) looks like the game stops preparing of network multiplayer
immediately after calling of GetAdaptersAddresses.

AFAIK, all the games are little bit older, so maybe they expect some exact (or
maximal) size of IP_ADAPTER_ADDRESSES structure.
As I saw on MS page
http://msdn.microsoft.com/en-us/library/windows/desktop/aa366058%28v=vs.85%29.aspx,
there are different sizes of IP_ADAPTER_ADDRESSES structure depending of
Windows version. And, if I understand source code properly, Wine returns always
the same structure, independent of windows version slected in WineCfg.

Additionally, I didn't see the last member (PIP_ADAPTER_DNS_SUFFIX            
FirstDnsSuffix; - according to link above) in IP_ADAPTER_ADDRESSES structure in
iptypes.h.

2.
Again GetAdaptersAddresses:
There is one more interesting thing on this page:
http://msdn.microsoft.com/en-us/library/windows/desktop/aa365915%28v=vs.85%29.aspx
See the Remarks about size of IP_ADAPTER_ADDRESSES linked structures - how to
determine needed memory size via two subsequent calling of
GetAdaptersAddresses.
Even if it is discouraged, it looks like DPNET.DLL or the game itself is doing
exactly this thing - according to my logs, the first call of
GetAdaptersAddresses has parameter AdapterAddresses=NULL.

Maybe there is some similar situation about calling of
socket/getsockopt/closesocket?

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