C# Signature:
/* Look at WSAIoctl function parameters .!. */
/* http://msdn.microsoft.com/en-us/library/windows/desktop/ms741621(v=vs.85).aspx */
[DllImport("Ws2_32.dll")]
public static extern int WSAIoctl(
/* Socket, Mode */
IntPtr s, System.Net.Sockets.IOControlCode dwIoControlCode,
/* Optional Or IntPtr.Zero, 0 */
IntPtr lpvInBuffer, int cbInBuffer,
/* Optional Or IntPtr.Zero, 0 */
IntPtr lpvOutBuffer, int cbOutBuffer,
/* reference to receive Size */
ref int lpcbBytesReturned,
/* IntPtr.Zero, IntPtr.Zero */
IntPtr lpOverlapped, IntPtr lpCompletionRoutine);
VB Signature:
Declare Function WSAIoctl Lib "ws2_32.dll" (TODO) As TODO
User-Defined Types:
None.
Alternative Managed API:
Do you know one? Please contribute it!
Notes:
None.
Tips & Tricks:
Please add some!
Sample Code:
public int Avilible
{
get
{
var BufferRet = 0;
// v1
//BufferRet = 0;
//var BufferPtr = Marshal.AllocHGlobal(Buffer);
//BufferRet = Native.recv(socketPtr, BufferPtr, Buffer, Native.MsgFlags.MSG_PEEK);
//Marshal.FreeHGlobal(BufferPtr);
// v2
//BufferRet = 0;
//Native.ioctlsocket(this.socketPtr, Native.Command.FIONREAD, ref BufferRet);
// v3
BufferRet = 0;
var nBytesReturned = 0;
var infoSize = Marshal.SizeOf(BufferRet);
var handle = Marshal.AllocHGlobal(infoSize);
Native.WSAIoctl(
this.socketPtr, Native.ControlCode.FIONREAD,
IntPtr.Zero, 0,
handle, infoSize,
ref nBytesReturned,
IntPtr.Zero, IntPtr.Zero);
BufferRet = Marshal.ReadInt32(handle);
return BufferRet;
}
}
