private static extern int WSAIoctl(
[In] IntPtr socket,
[In] uint dwIoControlCode,
[In] ref Guid lpvInBuffer,
[In] uint cbInBuffer,
[In, Out] ref RioExtensionFunctionTable lpvOutBuffer,
[In] int cbOutBuffer,
[Out] out uint lpcbBytesReturned,
[In] IntPtr lpOverlapped,
[In] IntPtr lpCompletionRoutine
);
public unsafe static RegisteredIO Initalize(IntPtr socket)
{
UInt32 dwBytes = 0;
RioExtensionFunctionTable rio = new RioExtensionFunctionTable();
Guid rioFunctionsTableId = new Guid("8509e081-96dd-4005-b165-9e2ee8c79e3f");
int True = -1;
int result = setsockopt(socket, IPPROTO_TCP, TcpNodelay, (char *)&True, 4);
if (result != 0)
{
var error = WSAGetLastError();
WSACleanup();
throw new Exception($"ERROR: setsockopt TCP_NODELAY returned {error}");
}
result = WSAIoctlGeneral(socket, SioLoopbackFastPath,
&True, 4, null, 0,
out dwBytes, IntPtr.Zero, IntPtr.Zero);
if (result != 0)
{
var error = WSAGetLastError();
WSACleanup();
throw new Exception($"ERROR: WSAIoctl SIO_LOOPBACK_FAST_PATH returned {error}");
}
result = WSAIoctl(socket, SioGetMultipleExtensionFunctionPointer,
ref rioFunctionsTableId, 16, ref rio,
sizeof(RioExtensionFunctionTable),
out dwBytes, IntPtr.Zero, IntPtr.Zero);
if (result != 0)
{
var error = WSAGetLastError();
WSACleanup();
throw new Exception($"ERROR: RIOInitalize returned {error}");
}
var rioFunctions = new RegisteredIO();
rioFunctions.RioRegisterBuffer = Marshal.GetDelegateForFunctionPointer <RioRegisterBuffer>(rio.RIORegisterBuffer);
rioFunctions.RioCreateCompletionQueue = Marshal.GetDelegateForFunctionPointer <RioCreateCompletionQueue>(rio.RIOCreateCompletionQueue);
rioFunctions.RioCreateRequestQueue = Marshal.GetDelegateForFunctionPointer <RioCreateRequestQueue>(rio.RIOCreateRequestQueue);
rioFunctions.Notify = Marshal.GetDelegateForFunctionPointer <RioNotify>(rio.RIONotify);
rioFunctions.DequeueCompletion = Marshal.GetDelegateForFunctionPointer <RioDequeueCompletion>(rio.RIODequeueCompletion);
rioFunctions.RioReceive = Marshal.GetDelegateForFunctionPointer <RioReceive>(rio.RIOReceive);
rioFunctions.Send = Marshal.GetDelegateForFunctionPointer <RioSend>(rio.RIOSend);
rioFunctions.CloseCompletionQueue = Marshal.GetDelegateForFunctionPointer <RioCloseCompletionQueue>(rio.RIOCloseCompletionQueue);
rioFunctions.DeregisterBuffer = Marshal.GetDelegateForFunctionPointer <RioDeregisterBuffer>(rio.RIODeregisterBuffer);
rioFunctions.ResizeCompletionQueue = Marshal.GetDelegateForFunctionPointer <RioResizeCompletionQueue>(rio.RIOResizeCompletionQueue);
rioFunctions.ResizeRequestQueue = Marshal.GetDelegateForFunctionPointer <RioResizeRequestQueue>(rio.RIOResizeRequestQueue);
return(rioFunctions);
}