If any IPX sockets are passed to select() in the writefds set, substitute them
for the private UDP socket before calling the real select(), if it remains in
writefds upon return, remove it and restore the previously removed IPX sockets.
In short: Allow detecting when an IPX socket is ready to send.
These tools can be used to measure RTT, packet loss, and sendto()/recv() call
duration on one end with a specified minimum delay between sendto() calls to
emulate some different loads.
We don't need any memory reserved for writing out packet headers, but
DirectPlay seems to corrupt itself internally and do funky things if this goes
below a certain threshold. Value taken from the DX5 service provider.
Initialise the discovery socket when SP_CreatePlayer() is called with the
CREATEPLAYER_NS flag and do nothing in SP_Open, as per the DX5 implementation.
This will correctly handle the name server moving between nodes in a session.
Hold the lock while reading to ensure the socket isn't closed during the
recvfrom() call, allow either socket to be closed and close either socket if
the recvfrom() call fails.
When there are more than two players in a session (including the host), the
message that triggers SP_CreatePlayer() may not be from the host that actually
has that player on it, copy the behaviour of the DX5 SP and make each player be
responsible for sharing their own address via the shared data.
Implementing this method isn't mandatory and the Microsoft implementation
doesn't provide it. It doesn't appear to get used either, so ditching it to
reduce the number of things that can go wrong.
WIP: SP_Send cleanup
Dump most of the old "unit" tests which were more system tests and only tested
a small amount of functionality against the host.
The new test suite is a lot more thorough and tests an arbitrary Windows version
over the network rather than testing within the host's WinSock environment.
More documentation detailing how to run this will follow.
Various fixups to build under win-builds.org toolchain rather than MinGW. No
longer builds under MinGW as I have removed headers/definitions that it lacks.
Detect multiple sockets bound to the same address within a session by creating
a named mutex. Multiple handles to a mutex may exist and closing the last one
destroys it.
Unless configured otherwise, the Windows IPX driver defaults to misusing this on
the wire until it sees a packet with a different network number, at which point
it switches to using that until reboot.
